blocks|key|60756|text|从maven工具窗口运行Force重新导入。如果这不起作用，请使缓存无效(File+>无效缓存)并重新启动。等待想法重新索引该项目。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|60757|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Run a Force re-import from the maven tool window. If that does not work, Invalidate your caches (File > Invalidate caches) and restart. Wait for IDEA to re-index the project.

blocks|key|60784|text|我也犯了同样的错误，并能够通过删除旧的Maven设置文件来消除它。然后，我使用mvn命令手动更新了Maven插件：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|60785|mv+~/.m2/settings.xml+~/.m2/settings.xml.old
mvn+-up|code-block|syntax|javascript|60786|最后，我在IntelliJ的Maven+Project选项卡中运行了“”按钮。这些错误在我的案件中消失了。|60787|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I had the same error and was able to get rid of it by deleting my old Maven settings file. Then I updated the Maven plugins manually using the mvn command:

<pre><code>mv ~/.m2/settings.xml ~/.m2/settings.xml.old
mvn -up
</code></pre>

Finally I ran the "Reimport All Maven Projects" button in the Maven Project tab in IntelliJ. The errors vanished in my case.

blocks|key|2233407|text|这对‘C：\UsersWindowsUserAccount.m2\+me...delete’下的所有文件夹和文件都有好处。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2233408|最后，在IntelliJ中的Maven+Project选项卡中运行“重新导入所有Maven项目”。|2233409|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

This did the trick for me...delete all folders and files under 'C:\Users[Windows User Account].m2\repository'.

Finally ran 'Reimport All Maven Projects' in the Maven Project tab in IntelliJ.

blocks|key|696850|text|如果在Maven插件中的项目下面有红色的squiggles，请单击"Reimport“按钮(看起来像刷新符号)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|696851|​|696852|📷|atomic|offset|length|696853|696854|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/fdb7516b95490efa14077a464796c706.png|imageAlt^0|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@$G|V|H|W|1|X]]|A|$]]|$1|I|3|C|5|6|7|Y|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q|R|-4]]]]

If you have red squiggles underneath the project in the Maven plugin, try clicking the "Reimport All Maven Projects" button (looks like a refresh symbol).

<img src="https://i.stack.imgur.com/mIp0h.png" alt="Reimport all Maven Projects">

blocks|key|696859|text|对于较新版本的IntelliJ，在Maven设置中启用use注册表选项，如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|696860|单击文件设置。|ordered-list-item|offset|length|style|BOLD|696861|展开构建、执行、部署构建工具Maven。|696862|检查使用插件注册表。|696863|单击OK或Apply。|696864|对于IntelliJ+14.0.1，打开首选项--而不是设置--查找插件注册表选项：|696865|单击文件首选项。|696866|无论版本如何，也会使缓存无效：|696867|单击“文件无效缓存/重新启动”。|696868|单击无效并重新启动。|696869|当IntelliJ再次启动时，问题应该被克服。|696870|entityMap^0|0|2|4|0|2|H|0|2|7|0|2|2|5|5|0|0|2|5|0|0|3|B|0|2|7|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|13|8|@$E|14|F|15|G|H]]|9|@]|A|$]]|$1|I|3|J|5|D|7|16|8|@$E|17|F|18|G|H]]|9|@]|A|$]]|$1|K|3|L|5|D|7|19|8|@$E|1A|F|1B|G|H]]|9|@]|A|$]]|$1|M|3|N|5|D|7|1C|8|@$E|1D|F|1E|G|H]|$E|1F|F|1G|G|H]]|9|@]|A|$]]|$1|O|3|P|5|6|7|1H|8|@]|9|@]|A|$]]|$1|Q|3|R|5|D|7|1I|8|@$E|1J|F|1K|G|H]]|9|@]|A|$]]|$1|S|3|T|5|6|7|1L|8|@]|9|@]|A|$]]|$1|U|3|V|5|D|7|1M|8|@$E|1N|F|1O|G|H]]|9|@]|A|$]]|$1|W|3|X|5|D|7|1P|8|@$E|1Q|F|1R|G|H]]|9|@]|A|$]]|$1|Y|3|Z|5|6|7|1S|8|@]|9|@]|A|$]]|$1|10|3|-4|5|6|7|1T|8|@]|9|@]|A|$]]]|11|$]]

For newer versions of IntelliJ, enable the use plugin registry option within the Maven settings as follows:
<ol>
<li>Click File Settings.</li>
<li>Expand Build, Execution, Deployment Build Tools Maven.</li>
<li>Check Use plugin registry.</li>
<li>Click OK or Apply.</li>
</ol>
For IntelliJ 14.0.1, open the preferences---not settings---to find the plugin registry option:
<ol>
<li>Click File Preferences.</li>
</ol>
Regardless of version, also invalidate the caches:
<ol>
<li>Click File Invalidate Caches / Restart.</li>
<li>Click Invalidate and Restart.</li>
</ol>
When IntelliJ starts again the problem should be vanquished.

blocks|key|2233581|text|我可以通过在IntelliJ+(14.1.2)的maven设置中将"Maven主目录“从"Bundled+(Maven+3)”更改为"/usr/local/Cellar/maven/3.2.5/libexec“来解决这个问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2233582|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I could solve this problem by changing "Maven home directory" from "Bundled (Maven 3) to "/usr/local/Cellar/maven/3.2.5/libexec" in the maven settings of IntelliJ (14.1.2).

blocks|key|696878|text|取消选中Maven设置中的“工作脱机”复选框。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|696879|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Uncheck the "Work offline" checkbox in Maven settings.

blocks|key|695471|text|在我的例子中，在两个maven子模块中有两个稍微不同的依赖关系(版本2.1vs2.0)。在我切换到单一版本之后，想法14中出现了错误。(刷新和.m2刷卡没有帮助。)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|695472|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

In my case, there were two slightly different dependences (version 2.1 vs 2.0) in two maven sub-modules. After I switched to a single version the error has gone in IDEA 14. (Refresh and .m2 swipe didn't help.)

blocks|key|695495|text|Goto+IntelliJ+->+Preferences+->插件|type|unstyled|depth|inlineStyleRanges|entityRanges|data|695496|搜索maven，您将看到1.maven+Integration2.maven集成扩展。|695497|选择Maven+Integration选项并重新启动Intellij|695498|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

Goto IntelliJ -> Preferences -> Plugin

Search for maven, you will see
1. Maven Integration
2. Maven Integration Extension.

Select the Maven Integration option and restart your Intellij

blocks|key|696929|text|其他的答案对我都没有用。对我有用的解决方案是通过cmd手动下载丢失的工件：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|696930|mvn+dependency:get+-DrepoUrl=http://repo.maven.apache.org/maven2/+-Dartifact=ro.isdc.wro4j:wro4j-maven-plugin:1.8.0|code-block|syntax|javascript|696931|在这个改变之后，需要让我们知道关于新的可用工件的想法。这可以在“设置>+Maven+>存储库”中完成，选择“本地”，只需单击"Update“即可。|696932|编辑：-DrepoUrl似乎被废弃了。应该使用-DremoteRepositories。资料来源：Apache依赖插件-依赖项:get.|offset|length|style|BOLD|696933|entityMap|0|LINK|mutability|MUTABLE|url|https://maven.apache.org/plugins/maven-dependency-plugin/get-mojo.html^0|0|0|0|0|2|1D|I|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Y|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|Z|8|@$K|10|L|11|M|N]]|9|@$K|12|L|13|1|14]]|A|$]]|$1|O|3|-4|5|6|7|15|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|V]]]]

None of the other answers worked for me. The solution that worked for me was to download the missing artifact manually via cmd:
<pre><code>mvn dependency:get -DrepoUrl=http://repo.maven.apache.org/maven2/ -Dartifact=ro.isdc.wro4j:wro4j-maven-plugin:1.8.0
</code></pre>
After this change need to let know the Idea about new available artifacts. This can be done in &quot;Settings &gt; Maven &gt; Repositories&quot;, select there your &quot;Local&quot; and simply click &quot;Update&quot;.
Edit: the -DrepoUrl seems to be deprecated. -DremoteRepositories should be used instead. Source: <a href="https://maven.apache.org/plugins/maven-dependency-plugin/get-mojo.html" rel="noreferrer">Apache Maven Dependency Plugin – dependency:get</a>.

blocks|key|2233710|text|我也有过同样的问题。我将插件添加到我的pom.xml依赖项中，它对我有效。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2233711|++++<dependency>
++++++++<groupId>org.apache.maven.plugins</groupId>
++++++++<artifactId>maven-site-plugin</artifactId>
++++++++<version>3.3</version>
++++++++<type>maven-plugin</type>
++++</dependency>

++++<dependency>
++++++++<groupId>org.apache.maven.plugins</groupId>
++++++++<artifactId>maven-install-plugin</artifactId>
++++++++<version>2.4</version>
++++++++<type>maven-plugin</type>
++++</dependency>

++++<dependency>
++++++++<groupId>org.apache.maven.plugins</groupId>
++++++++<artifactId>maven-deploy-plugin</artifactId>
++++++++<version>2.7</version>
++++++++<type>maven-plugin</type>
++++</dependency>|code-block|syntax|javascript|2233712|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I had the same issue. I added the plugins into my pom.xml dependencies and it works for me.

<pre><code> &lt;dependency&gt;
 &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
 &lt;artifactId&gt;maven-site-plugin&lt;/artifactId&gt;
 &lt;version&gt;3.3&lt;/version&gt;
 &lt;type&gt;maven-plugin&lt;/type&gt;
 &lt;/dependency&gt;

 &lt;dependency&gt;
 &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
 &lt;artifactId&gt;maven-install-plugin&lt;/artifactId&gt;
 &lt;version&gt;2.4&lt;/version&gt;
 &lt;type&gt;maven-plugin&lt;/type&gt;
 &lt;/dependency&gt;

 &lt;dependency&gt;
 &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
 &lt;artifactId&gt;maven-deploy-plugin&lt;/artifactId&gt;
 &lt;version&gt;2.7&lt;/version&gt;
 &lt;type&gt;maven-plugin&lt;/type&gt;
 &lt;/dependency&gt;
</code></pre>

blocks|key|61108|text|我最近也面临着同样的问题。其他解决方案中没有一个解决了红色错误行。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|61109|我所做的就是运行实际的目标(部署，站点)。然后，我可以看到这些依赖项正在被获取。|61110|在那之后，一次再进口就起了作用。|61111|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

I was recently faced with the same issue. None of the other solutions resolved the red error lines.

What I did was run the actual targets in question (deploy, site). I could see those dependencies then being fetched.

After that, a reimport did the trick.

blocks|key|61137|text|如果工件是不可分解的。转到您的.m2/存储库目录中，检查是否没有该类型的文件：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|61138|build-helper-maven-plugin-1.10.pom.lastUpdated|61139|如果文件夹中没有任何伪制品，只需删除它，然后再尝试在IntelliJ中重新导入。|61140|这些文件的内容如下：|61141|#NOTE:+This+is+an+Another+internal+implementation+file,+its+format+can+be+changed+without+prior+notice.
#Fri+Mar+10+10:36:12+CET+2017
@default-central-https\://repo.maven.apache.org/maven2/.lastUpdated=1489138572430
https\://repo.maven.apache.org/maven2/.error=Could+not+transfer+artifact+org.codehaus.mojo\:build-helper-maven-plugin\:pom\:1.10+from/to+central+(https\://repo.maven.apache.org/maven2)\:+connect+timed+out|code-block|syntax|javascript|61142|如果没有*.lastUpdated文件，就会启用IntelliJ+(或者Eclipse顺便说一句)来重新加载缺少的内容。|61143|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|S|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|T|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|U|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

If an artifact is not resolvable.
Go in the directory of your .m2/repository
and check that you DON'T have that kind of file :
build-helper-maven-plugin-1.10.pom.lastUpdated
If you don't have any artefact in the folder, just delete it, and try again to re-import in IntelliJ.
the content of those files is like :
<pre><code>#NOTE: This is an Another internal implementation file, its format can be changed without prior notice.
#Fri Mar 10 10:36:12 CET 2017
@default-central-https\://repo.maven.apache.org/maven2/.lastUpdated=1489138572430
https\://repo.maven.apache.org/maven2/.error=Could not transfer artifact org.codehaus.mojo\:build-helper-maven-plugin\:pom\:1.10 from/to central (https\://repo.maven.apache.org/maven2)\: connect timed out
</code></pre>
Without the *.lastUpdated file, IntelliJ (or Eclipse by the way) is enabled to reload what is missing.

blocks|key|2233750|text|多年来，我在maven部署插件中遇到了这个问题，尽管我没有将插件直接包含在POM中，但错误还是出现了。作为一项工作，我不得不强制将带有版本的插件包含到我的POMs插件部分中，以删除红色的插件。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2233751|在尝试了堆栈溢出的每个解决方案之后，我发现了一个问题:查看我的.m2/repository/org/apache/maven/plugins/maven-deploy-plugin目录，有一个版本'X.Y‘和'2.8.2’等。因此，我删除了整个Maven+-部署插件目录，然后重新导入我的Maven项目。|offset|length|style|CODE|2233752|因此，在解析存储库时，问题似乎是一个IntelliJ错误。不过，我不会删除整个存储库，只删除报告错误的插件。|2233753|entityMap^0|0|V|1N|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@$D|N|E|O|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|P|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|K|$]]

I had this problem for years with the maven-deploy plugin, and the error showed up even though I was not directly including the plugin in my POM. As a work-around I had to force include the plugin with a version into my POMs plugin section just to remove the red-squiggly.

After trying every solution on Stack Overflow, I found the problem: Looking into my <code>.m2/repository/org/apache/maven/plugins/maven-deploy-plugin</code> directory there was a version 'X.Y' along with '2.8.2' et al. So I deleted the entire maven-deploy-plugin directory, and then re-imported my Maven project.

So it seems the issue is an IntelliJ bug in parsing the repository. I would not not remove the entire repository though, just the plugins that report an error.

blocks|key|61171|text|我已经在Maven设置中将maven主目录从Bundled(Maven+3)更改为Bundled(Maven+2)。这对我来说很管用。试一试！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|61172|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I have change the Maven home directory from Bundled(Maven 3) to Bundled(Maven 2) in the maven setting. And this works for me. Have a try!

blocks|key|2233851|text|带有警告的红色maven-site-plugin在构建站点生命周期之后得到解决：|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|2233852|​|2233853|📷|atomic|2233854|2233855|我的IntelliJ版本是Community2017.2.4|2233856|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/a191f7ef29d252c34e218ccbe081454b.png|imageAlt^0|7|H|R|2|0|0|0|1|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|11|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|12|8|@]|D|@$9|13|A|14|1|15]]|E|$]]|$1|K|3|G|5|6|7|16|8|@]|D|@]|E|$]]|$1|L|3|M|5|6|7|17|8|@]|D|@]|E|$]]|$1|N|3|-4|5|6|7|18|8|@]|D|@]|E|$]]]|O|$P|$5|Q|R|S|E|$T|U|V|-4]]]]

The red with warnings maven-site-plugin resolved after the build site Lifecycle:

<a href="https://i.stack.imgur.com/HEk9s.png" rel="noreferrer"><img src="https://i.stack.imgur.com/HEk9s.png" alt="enter image description here"></a>

My IntelliJ version is Community 2017.2.4

blocks|key|61258|text|删除本地Maven未知插件并重新导入所有maven项目。这将解决这个问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|61259|您可以在View+>+Tool+Windows+>+Maven中找到它：|offset|length|style|CODE|61260|​|61261|📷|atomic|61262|61263|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/e6233b497309bdb6a5c0fa6b90ceb5e6.jpg|imageAlt^0|0|4|R|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@$D|Y|E|Z|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|10|8|@]|9|@]|A|$]]|$1|J|3|K|5|L|7|11|8|@]|9|@$D|12|E|13|1|14]]|A|$]]|$1|M|3|I|5|6|7|15|8|@]|9|@]|A|$]]|$1|N|3|-4|5|6|7|16|8|@]|9|@]|A|$]]]|O|$P|$5|Q|R|S|A|$T|U|V|-4]]]]

Remove your local Maven unknown plugin and reimport all maven projects. This will fix this issue.

You can find it under <code>View &gt; Tool Windows &gt; Maven</code> :

<a href="https://i.stack.imgur.com/CXTCx.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/CXTCx.jpg" alt="enter image description here"></a>

blocks|key|697046|text|"IntelliJ+IDEA和Maven+-“未解决的插件”解决方案“+--特别是删除插件文件夹--然后在ide重新启动后重新启动所有maven插件--对我来说是有效的。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|697047|entityMap|0|LINK|mutability|MUTABLE|url|https://gist.github.com/kdevo/05542ea81905d12199019699962171de^0|0|Z|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

<a href="https://gist.github.com/kdevo/05542ea81905d12199019699962171de" rel="nofollow noreferrer">"IntelliJ IDEA and Maven - "Unresolved Plugin" Solutions"</a> - in particular, deleting the plugin-folder - then reimporting all maven plugins after ide restart - worked for me.

blocks|key|61321|text|我使用的是IntelliJ终极2018.2.6，并发现重新导入所有Maven项目并不使用JDK，它设置在设置中:生成、执行、部署、构建工具、Maven、Runner。相反，它默认在IntelliJ_HOME/jre64/中使用自己的JRE。您可以在Build、Execution、、Importing+)导入过程中为导入程序配置JDK。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|CODE|entityRanges|data|61322|在我的具体问题中，JREs密钥库中缺少SSL证书。不幸的是，IDEA只将此问题记录在自己的日志文件中。一个红色的小盒子告诉我RuntimeException的事真的很好.|61323|entityMap^0|R|D|2I|K|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@$9|L|A|M|B|C]|$9|N|A|O|B|D]]|E|@]|F|$]]|$1|G|3|H|5|6|7|P|8|@]|E|@]|F|$]]|$1|I|3|-4|5|6|7|Q|8|@]|E|@]|F|$]]]|J|$]]

I am using IntelliJ Ultimate 2018.2.6 and found out, that the feature Reimport All Maven Project does not use the JDK, which is set in the Settings: Build, Execution, Deployment | Build Tools | Maven | Runner. 
Instead it uses it's own JRE in <code>IntelliJ_HOME/jre64/</code> by default. You can configure the JDK for the Importer in Build, Execution, Deployment | Build Tools | Maven | Importing.

In my specific problem, an SSL certificate was missing in the JREs keystore. Unfortunately IDEA only logs this issue in it's own logfile. A little red box to inform about the RuntimeException had been really nice...

blocks|key|2233934|text|这可能会帮到一个人|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2233935|我遇到了类似的问题，我的系统无法解决代理服务器问题。|2233936|和当地的wifi+hotpsot连接在一起。|2233937|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

this might help someone down the line

i faced similar issues, my system was not able to resolve the proxy server 
so connected to the local wifi hotpsot.

blocks|key|61325|text|这对我起了作用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|61326|密切思想|unordered-list-item|61327|删除"*.iml“和".idea”-directories(出现在项目的根文件夹中)|offset|length|style|BOLD|61328|从命令行运行"mvn干净安装“。|61329|将您的项目重新导入到概念中。|61330|在重新导入整个项目后，依赖项的安装将开始，这将需要几分钟来完成，这取决于您的互联网连接。|61331|entityMap^0|0|0|3|5|B|5|0|7|7|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$]]|$1|E|3|F|5|D|7|U|8|@$G|V|H|W|I|J]|$G|X|H|Y|I|J]]|9|@]|A|$]]|$1|K|3|L|5|D|7|Z|8|@$G|10|H|11|I|J]]|9|@]|A|$]]|$1|M|3|N|5|D|7|12|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|13|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|R|$]]

This worked for me:

<ul>
<li>Close IDEA</li>
<li>Delete "*.iml" and ".idea" -directories(present in the root folder of project)</li>
<li>Run "mvn clean install" from the command-line</li>
<li>Re-import your project into IDEA</li>
</ul>

After re-importing the entire project, installation of dependencies will start which will take some minutes to complete depending upon your internet connection.

blocks|key|2234081|text|您可以将它们作为依赖项添加：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2234082|<dependencies>
++++<dependency>
++++++++<groupId>org.apache.maven.plugins</groupId>
++++++++<artifactId>maven-clean-plugin</artifactId>
++++++++<version>2.4.1</version>
++++</dependency>
</dependencies>|code-block|syntax|javascript|2234083|Intellij会解决这些问题。成功导入依赖项之后，可以清除它们。|2234084|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

You can add them as dependencies:

<pre><code>&lt;dependencies&gt;
 &lt;dependency&gt;
 &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
 &lt;artifactId&gt;maven-clean-plugin&lt;/artifactId&gt;
 &lt;version&gt;2.4.1&lt;/version&gt;
 &lt;/dependency&gt;
&lt;/dependencies&gt;
</code></pre>

Intellij will resolve them. After successfull import dependencies, you can clean them.

blocks|key|2234121|text|对我来说，settings.xml犯了一个错误。我在url中使用http://，因为它不起作用。一旦我删除它，插件就被成功下载了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2234122|<proxy>
+++<id>optional</id>
+++<active>true</active>
+++<protocol>http</protocol>
+++<host>www-proxy.xxxx.com</host>
+++<port>80</port>
++
++</proxy>

++
++<proxy>
+++<id>optional1</id>
+++<active>true</active>
+++<protocol>https</protocol>
+++<host>www-proxy.xxxx.com</host>
+++<port>80</port>
+++
++</proxy>|code-block|syntax|javascript|2234123|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

For me, there was a mistake in the settings.xml. I was using http:// in the url due to which it wasn't working. Once i removed it the plugins were downloaded successfully. 

<pre><code>&lt;proxy&gt;
 &lt;id&gt;optional&lt;/id&gt;
 &lt;active&gt;true&lt;/active&gt;
 &lt;protocol&gt;http&lt;/protocol&gt;
 &lt;host&gt;www-proxy.xxxx.com&lt;/host&gt;
 &lt;port&gt;80&lt;/port&gt;
 &lt;!-- &lt;nonProxyHosts&gt;local.net&lt;/nonProxyHosts&gt;--&gt;
 &lt;/proxy&gt;

 &lt;!-- Proxy for HTTPS --&gt;
 &lt;proxy&gt;
 &lt;id&gt;optional1&lt;/id&gt;
 &lt;active&gt;true&lt;/active&gt;
 &lt;protocol&gt;https&lt;/protocol&gt;
 &lt;host&gt;www-proxy.xxxx.com&lt;/host&gt;
 &lt;port&gt;80&lt;/port&gt;
 &lt;!--&lt;nonProxyHosts&gt;local.net&lt;/nonProxyHosts&gt;--&gt;
 &lt;/proxy&gt;
</code></pre>

blocks|key|695730|text|下面是我试图解决这个问题的方法，它起了作用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|695731|从.m2回购中手动删除现有插件|ordered-list-item|695732|启用IntelliJ中的“使用插件注册表”|695733|使缓存无效并重新启动IntelliJ|695734|在IntelliJ中重新导入maven项目|695735|在遵循上述步骤之后，问题得到了解决。希望这对你也有帮助。|695736|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$]]|$1|E|3|F|5|D|7|Q|8|@]|9|@]|A|$]]|$1|G|3|H|5|D|7|R|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|S|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|T|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|U|8|@]|9|@]|A|$]]]|N|$]]

Here is what I tried to fix the issue and it worked:

<ol>
<li>Manually deleted the existing plugin from the .m2 repo</li>
<li>Enabled "use plugin registry" in IntelliJ</li>
<li>Invalidated the cache and restarted IntelliJ</li>
<li>Reimported the maven project in IntelliJ</li>
</ol>

After following above steps, the issue was fixed. Hopefully this helps you as well.

blocks|key|2234177|text|解决了！|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|2234178|我就是这样解决问题的..。|2234179|尝试了其中的一个答案，其中包括‘可以解决它通过启用“使用插件注册表”。确实是成功的，但没有运气。|ordered-list-item|2234180|再次尝试线程中的一个答案，即‘如果不起作用，则使缓存无效(File+>无效缓存)并重新启动。’做了但又没有运气。|2234181|尝试了这些选择..。转到Settings+->+Maven+-->导入，并确保以下内容被选中
自动导入Maven项目
为聚合器项目创建IDEA模块保持源代码..。
不包括建筑..。
使用Maven输出..。
生成的灵魂文件夹：“自动检测”
阶段.：“过程-资源”
自动下载：“源”和“文档”
使用Maven3导入
导入程序的项目VM选项：-Xmx512m
但同样没有成功。|2234182|1.+Now+lets+say+I+had+10+such+plugins+which+didn't+get+resolve+and+among+them+the++first+was+**'org.apache.maven.plugins:maven-site-plugin'**+I+went+to+**'.m2/repository/org/apache/maven/plugins/'**+and+deleted+the+directory++'maven-site-plugin'+and+did+a+maven+reimport+again.+Guess+what,+particular++missing+plugin+got+dowloaded.+And+I+just+followed+similar+steps+for+other++missing+plugins+and+all+got+resolved.+|code-block|syntax|javascript|2234183|​|2234184|entityMap^0|0|4|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|X|8|@$9|Y|A|Z|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|10|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|11|8|@]|D|@]|E|$]]|$1|K|3|L|5|J|7|12|8|@]|D|@]|E|$]]|$1|M|3|N|5|J|7|13|8|@]|D|@]|E|$]]|$1|O|3|P|5|Q|7|14|8|@]|D|@]|E|$R|S]]|$1|T|3|U|5|6|7|15|8|@]|D|@]|E|$]]|$1|V|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|W|$]]

SOLVED !!!

This is how I fixed the issue...

<ol>
<li>Tried one of the answers which include 'could solve it by enabling "use plugin registry" '. Did enable that but no luck.</li>
<li>Tried again one of the answers in the thread which says 'If that does not work, Invalidate your caches (File > Invalidate caches) and restart.' Did that but again no luck.</li>
<li>Tried These options ..
Go to Settings --> Maven --> Importing and made sure the following was selected

Import Maven projects automatically 

Create IDEA modules for aggregator projects Keep source... 

Exclude build dir... 

Use Maven output... 

Generated souces folders: "detect automatically" 

Phase to be...: "process-resources" 

Automatically download: "sources" &amp; "documentation" 

Use Maven3 to import 

project VM options for importer: -Xmx512m

But again no success.

<ol start="4">
<li>Now lets say I had 10 such plugins which didn't get resolve and among them the 
first was 'org.apache.maven.plugins:maven-site-plugin'
I went to '.m2/repository/org/apache/maven/plugins/' and deleted the directory 
'maven-site-plugin' and did a maven reimport again. Guess what, particular 
missing plugin got dowloaded. And I just followed similar steps for other 
missing plugins and all got resolved. </li>
</ol></li>
</ol>

blocks|key|61609|text|对我来说，我手动下载它们，并将主题放在我的.m2文件夹中，然后使缓存失效并重新启动(我正在使用Intellij+)。这些步骤例如：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|61610|org.codehaus.mojo+jdepend+plugin2.0|blockquote|61611|我转到https://mvnrepository.com/，然后为jdepend插件选择2.0版本的serch|ordered-list-item|offset|length|61612|在“文件”中，转到并单击“查看所有”|61613|下载以下文件:jdepend+plugin-2.0.jar+this+maven-plugin-2.0.jar.sh1+this+maven-plugin-2.0.pomjld-maven-plugin-2.0.头.sh1|61614|转到.m2文件夹，然后是org/codehaus/mojo，在里面创建名为jdepend+plugin的文件夹，在其中放置下载的4个文件。|61615|创建名为_remote.repositories的文件，用文本编辑器打开它，然后在里面写|61616|plugin-2.0.jar>central=
plugin-2.0.pom>central=|61617|转到intellij，使缓存失效并重新启动。|61618|entityMap|0|LINK|mutability|MUTABLE|url|https://mvnrepository.com/^0|0|0|3|Q|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|13|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|14|8|@]|9|@]|A|$]]|$1|E|3|F|5|G|7|15|8|@]|9|@$H|16|I|17|1|18]]|A|$]]|$1|J|3|K|5|G|7|19|8|@]|9|@]|A|$]]|$1|L|3|M|5|G|7|1A|8|@]|9|@]|A|$]]|$1|N|3|O|5|G|7|1B|8|@]|9|@]|A|$]]|$1|P|3|Q|5|G|7|1C|8|@]|9|@]|A|$]]|$1|R|3|S|5|D|7|1D|8|@]|9|@]|A|$]]|$1|T|3|U|5|G|7|1E|8|@]|9|@]|A|$]]|$1|V|3|-4|5|6|7|1F|8|@]|9|@]|A|$]]]|W|$X|$5|Y|Z|10|A|$11|12]]]]

For me, I download them manually and put theme in my .m2 folder then i did invalidate cache and restart (I m using Intellij IDEA).
The steps are for example:

<blockquote>
<pre><code>&lt;groupId&gt;org.codehaus.mojo&lt;/groupId&gt;
 &lt;artifactId&gt;jdepend-maven-plugin&lt;/artifactId&gt;
&lt;version&gt;2.0&lt;/version&gt;
</code></pre>
</blockquote>

<ol>
<li>I go to <a href="https://mvnrepository.com/" rel="nofollow noreferrer">https://mvnrepository.com/</a> then serch for 
jdepend-maven-plugin choose the version 2.0</li>
<li>In Files go and click on View All </li>
<li>Download this files jdepend-maven-plugin-2.0.jar
 jdepend-maven-plugin-2.0.jar.sh1
 jdepend-maven-plugin-2.0.pom
 jdepend-maven-plugin-2.0.pom.sh1</li>
<li>go to .m2 folder then org/codehaus/mojo Create folder with name jdepend-maven-plugin inside with name
 2.0 inside put the 4 files downloaded befor.</li>
<li>create file with name _remote.repositories open it with text editor and write inside </li>
</ol>

<blockquote>
 jdepend-maven-plugin-2.0.jar>central= 
 jdepend-maven-plugin-2.0.pom>central=
</blockquote>

<ol start="6">
<li>go to intellij IDEA invalidate cache and restart.</li>
</ol>

blocks|key|61651|text|如果问题仍然存在，您可以手动添加缺少的插件文件。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|61652|例如，如果maven-site-plugins丢失，请转到https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-site-plugin。|offset|length|61653|选择您的版本，并下载直接关联到您的.m2文件夹中的文件，在本例中:+C:\Users\+{USERNAME}+.m2+{+version+}|61654|在IntelliJ思想中，打开Maven侧边栏并重新加载(工具提示:重新导入所有Maven项目)|61655|entityMap|0|LINK|mutability|MUTABLE|url|https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-site-plugin^0|0|T|25|0|0|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|S|8|@]|9|@$D|T|E|U|1|V]]|A|$]]|$1|F|3|G|5|6|7|W|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|X|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q]]]]

If problem persist, you can add manually the missing plugins files.

For example if maven-site-plugins is missing, go to <a href="https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-site-plugin" rel="nofollow noreferrer">https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-site-plugin</a>

Choice your version, and download files associated directly into your .m2 folder, in this example : C:\Users\ {USERNAME} .m2\repository\org\apache\maven\plugins\maven-site-plugin\ {VERSION} 

In IntelliJ IDEA, open Maven sidebar, and reload (tooltip : Reimport All Maven projects)

blocks|key|2234226|text|对我来说，工作就是把包含插件的存储库放在pluginRepository标签下。例如，|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2234227|<pluginRepositories>
++++<pluginRepository>
++++++++<id>pcentral</id>
++++++++<name>pcentral</name>
++++++++<url>https://repo1.maven.org/maven2</url>
++++</pluginRepository>
</pluginRepositories>|code-block|syntax|javascript|2234228|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

For me which worked is putting the repository which contained the plugin under pluginRepository tags. Example,

<pre><code>&lt;pluginRepositories&gt;
 &lt;pluginRepository&gt;
 &lt;id&gt;pcentral&lt;/id&gt;
 &lt;name&gt;pcentral&lt;/name&gt;
 &lt;url&gt;https://repo1.maven.org/maven2&lt;/url&gt;
 &lt;/pluginRepository&gt;
&lt;/pluginRepositories&gt;
</code></pre>

blocks|key|695806|text|我也遇到了同样的问题，在检查了pom.xml文件后，我发现我有重复的插件。在删除和只留下一个内部pom.xml+-问题解决了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|695807|此外，maven-surefire--报告-插件==最新和|695808|+++++<dependency>
++++++++<groupId>org.testng</groupId>
++++++++<artifactId>testng</artifactId>
++++++++<version>6.9.8</version>
++++</dependency>|code-block|syntax|javascript|695809|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I had the same problem, After checking the pom.xml file, found out that I have duplicated plugins for the surefire. After deleting and leaving only 1 inside the pom.xml - issue resolved.
Also maven-surefire-report-plugin == LATEST
and
<pre><code> &lt;dependency&gt;
 &lt;groupId&gt;org.testng&lt;/groupId&gt;
 &lt;artifactId&gt;testng&lt;/artifactId&gt;
 &lt;version&gt;6.9.8&lt;/version&gt;
 &lt;/dependency&gt;
</code></pre>

blocks|key|61684|text|对我来说，插件与个人资料有关。我必须通过Maven+(右侧侧栏菜单)、Profiles来启用相关的配置文件，并让依赖项下载。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|61685|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

For me the Plugins were related to a Profile.
I have to enable the relevant profile via Maven (right sidebar menu), Profiles and let the dependencies download.

blocks|key|697271|text|我也经历过同样的问题。解决这个问题的方法就是卸载intelliJ并重新安装它。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|697272|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I experienced the same issue. What resolved it for me was simply uninstalling intelliJ and reinstalling it.

blocks|key|2234334|text|检查找不到的插件(maven-site-plugin，maven-resources-plugin)|type|ordered-list-item|depth|inlineStyleRanges|entityRanges|data|2234335|转到‘.m2/存储库/org/apache/maven/plugins/’|2234336|删除rm+-rf插件目录-目录名(例如:+rm+-rf+maven-site-plugin)|2234337|退出intellij项目|2234338|再次导入项目|2234339|执行Maven重新导入|2234340|说明:当您执行maven重新导入时，它将再次下载所有缺失的插件。|unstyled|2234341|快乐编码|2234342|entityMap^0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|U|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|V|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|W|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|X|8|@]|9|@]|A|$]]|$1|L|3|M|5|N|7|Y|8|@]|9|@]|A|$]]|$1|O|3|P|5|N|7|Z|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|N|7|10|8|@]|9|@]|A|$]]]|R|$]]

<ol>
<li>Check the plugins which cannot be found (maven-site-plugin,maven-resources-plugin)</li>
<li>go to '.m2/repository/org/apache/maven/plugins/'</li>
<li>delete the directory rm -rf plugin-directory-name (eg: rm -rf maven-site-plugin) </li>
<li>exit project from intellij</li>
<li>import project again</li>
<li>Do a Maven reimport</li>
</ol>

Explanation: when you do a maven reimport, it will download all the missing plugins again.

Happy Coding

blocks|key|61747|text|启用“使用插件注册表”并在现金失效后重新启动项目解决了我的问题|type|unstyled|depth|inlineStyleRanges|entityRanges|data|61748|要启用“使用插件注册表”，>>>+(intelij)文件>设置>+Maven+>启用maven选项列表中的选项|61749|使现金>>>文件失效>使现金无效|61750|就这样..。|61751|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

Enabling &quot;use plugin registry&quot; and Restart project after invalidate cash solved my problem
to Enabling &quot;use plugin registry&quot; &gt;&gt;&gt; (intelij) File &gt; Setting &gt; Maven &gt; enable the option from the option list of maven
To invalidate cash &gt;&gt;&gt; file &gt; invalidate cash
That's it...

blocks|key|61763|text|尝试使缓存无效，重新启动项目，部分地和整体地删除.m2文件夹，并切换到绑定Maven的想法。什么也不起作用，我终于彻底破坏了Maven+:当它在控制台中构建项目时，现在它停止了。必须重新安装Maven，这很有帮助！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|61764|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Tried invalidating cache, reimporting the project, removing .m2 folder partially and as a whole, and switching to the Idea bundled Maven.
Nothing worked, and I've finally broken Maven completely: when it would build the project in the console, now it stopped.
Had to reinstall Maven, and it helped!

blocks|key|61766|text|对我来说，它就像给插件一个版本一样简单：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|61767|<version>3.3.0</version>|code-block|syntax|javascript|61768|完整的插件代码示例如下：|61769|<build>
<plugins>
++<plugin>
++++<groupId>org.apache.maven.plugins</groupId>
++++<artifactId>maven-assembly-plugin</artifactId>
++++<version>3.3.0</version>
++++<executions>
++++++<execution>
++++++++<phase>package</phase>
++++++++<goals>
++++++++++<goal>single</goal>
++++++++</goals>
++++++++<configuration>
++++++++++<archive>
++++++++++++<manifest>
++++++++++++++<mainClass>Main</mainClass>
++++++++++++</manifest>
++++++++++</archive>
++++++++++<descriptorRefs>
++++++++++++<descriptorRef>jar-with-dependencies</descriptorRef>
++++++++++</descriptorRefs>
++++++++</configuration>
++++++</execution>
++++</executions>
++</plugin>|61770|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

For me it was as simple as giving the plugin a version:
<pre><code>&lt;version&gt;3.3.0&lt;/version&gt;
</code></pre>
The full plugin code sample is given below:
<pre><code>&lt;build&gt;
&lt;plugins&gt;
 &lt;plugin&gt;
 &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
 &lt;artifactId&gt;maven-assembly-plugin&lt;/artifactId&gt;
 &lt;version&gt;3.3.0&lt;/version&gt;
 &lt;executions&gt;
 &lt;execution&gt;
 &lt;phase&gt;package&lt;/phase&gt;
 &lt;goals&gt;
 &lt;goal&gt;single&lt;/goal&gt;
 &lt;/goals&gt;
 &lt;configuration&gt;
 &lt;archive&gt;
 &lt;manifest&gt;
 &lt;mainClass&gt;Main&lt;/mainClass&gt;
 &lt;/manifest&gt;
 &lt;/archive&gt;
 &lt;descriptorRefs&gt;
 &lt;descriptorRef&gt;jar-with-dependencies&lt;/descriptorRef&gt;
 &lt;/descriptorRefs&gt;
 &lt;/configuration&gt;
 &lt;/execution&gt;
 &lt;/executions&gt;
 &lt;/plugin&gt;
</code></pre>

blocks|key|61778|text|我尝试了其他的答案，但他们都没有为我解决这个问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|61779|当我像这样显式地添加groupId时，问题就消失了：|offset|length|style|CODE|61780|<plugins>
++++<plugin>
++++++++<groupId>org.apache.maven.plugins</groupId>
++++++++<artifactId>maven-clean-plugin</artifactId>
++++++++<version>3.1.0</version>
++++</plugin>
</plugins>|code-block|syntax|javascript|61781|一旦版本号的颜色从红色变为黑色，问题从Problems选项卡上消失，groupId就可以再次从问题插件中删除，错误不会再次出现，版本号甚至会显示为version的建议。|61782|entityMap^0|0|A|7|0|0|J|8|Y|7|21|7|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@$D|S|E|T|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|U|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|V|8|@$D|W|E|X|F|G]|$D|Y|E|Z|F|G]|$D|10|E|11|F|G]]|9|@]|A|$]]|$1|O|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|P|$]]

I tried the other answers, but none of them solved this problem for me.
The problem disappeared when I explicitly added the <code>groupId</code> like this:
<pre class="lang-xml prettyprint-override"><code>&lt;plugins&gt;
 &lt;plugin&gt;
 &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
 &lt;artifactId&gt;maven-clean-plugin&lt;/artifactId&gt;
 &lt;version&gt;3.1.0&lt;/version&gt;
 &lt;/plugin&gt;
&lt;/plugins&gt;
</code></pre>
Once the color of the version number changed from red to black and the problem disappeared from the <code>Problems</code> tab the <code>groupId</code> can be removed again from the problematic plugin, the error does not show up again and the version number even shows up as suggestion for <code>version</code>.

blocks|key|61794|text|尝试将以下代码放入您的pom.xml中。如果这不起作用，请尝试更改<version>2.8.2</version>+(可以在maven+repo中找到不同的版本)。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|61795|<build>
++++<pluginManagement>
++++++++<plugins>
++++++++++++<plugin>
++++++++++++++++<groupId>org.apache.maven.plugins</groupId>
++++++++++++++++<artifactId>maven-deploy-plugin</artifactId>
++++++++++++++++<version>2.8.2</version>
++++++++++++</plugin>
++++++++</plugins>
++++</pluginManagement>
</build>|code-block|syntax|javascript|61796|entityMap^0|X|O|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

Try to put the following code in your pom.xml. If this does not work, try to change the <code>&lt;version&gt;2.8.2&lt;/version&gt;</code> (diferent versions can be found in the maven repo.)
<pre><code>&lt;build&gt;
 &lt;pluginManagement&gt;
 &lt;plugins&gt;
 &lt;plugin&gt;
 &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
 &lt;artifactId&gt;maven-deploy-plugin&lt;/artifactId&gt;
 &lt;version&gt;2.8.2&lt;/version&gt;
 &lt;/plugin&gt;
 &lt;/plugins&gt;
 &lt;/pluginManagement&gt;
&lt;/build&gt;
</code></pre>

blocks|key|61862|text|我的案子：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|61863|带有maven-javadoc-plugin版本的3.2.0以IntelliJ显示为红色。|unordered-list-item|offset|length|style|CODE|61864|插件在我本地的maven+repo中。|61865|再进口马文百万次。|61866|从命令行运行mvn+clean+install+N次。|61867|我在IntelliJ中的所有maven设置都是正确的。|61868|试图在捆绑和非捆绑的Maven之间切换。|61869|尝试删除整个maven回购，并只删除插件从它。|61870|上述一切都不起作用。|61871|--几乎总是有助于现代IntelliJ理念版本的唯一东西--“使缓存失效/重新启动”。这次也有所帮助。maven-javadoc-plugin不再是红色的了，我可以点击它并点击到插件的源程序pom文件。|BOLD|61872|entityMap^0|0|2|K|P|5|0|0|0|6|H|0|0|0|0|0|0|17|1F|K|2N|3|0^^$0|@$1|2|3|4|5|6|7|11|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|12|8|@$E|13|F|14|G|H]|$E|15|F|16|G|H]]|9|@]|A|$]]|$1|I|3|J|5|D|7|17|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|18|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|19|8|@$E|1A|F|1B|G|H]]|9|@]|A|$]]|$1|O|3|P|5|D|7|1C|8|@]|9|@]|A|$]]|$1|Q|3|R|5|D|7|1D|8|@]|9|@]|A|$]]|$1|S|3|T|5|D|7|1E|8|@]|9|@]|A|$]]|$1|U|3|V|5|D|7|1F|8|@]|9|@]|A|$]]|$1|W|3|X|5|D|7|1G|8|@$E|1H|F|1I|G|Y]|$E|1J|F|1K|G|H]|$E|1L|F|1M|G|H]]|9|@]|A|$]]|$1|Z|3|-4|5|6|7|1N|8|@]|9|@]|A|$]]]|10|$]]

My case:
<ul>
<li><code>maven-javadoc-plugin</code> with version <code>3.2.0</code> is displayed red in IntelliJ.</li>
<li>Plugin is present in my local maven repo.</li>
<li>Re-imported maven million times.</li>
<li>Ran <code>mvn clean install</code> from the command line N times.</li>
<li>All my maven settings in IntelliJ are correct.</li>
<li>Tried to switch between Bundled and non-bundled Maven.</li>
<li>Tried do delete the whole maven repo and to delete only the plugin from it.</li>
<li>Nothing of the above worked.</li>
<li>The only thing that almost always helps with modern IntelliJ IDEA versions is &quot;Invalidate caches / Restart&quot;. It helped this time as well. <code>maven-javadoc-plugin</code> is not red anymore, and I can click on it and to to the source <code>pom</code> file of the plugin.</li>
</ul>

blocks|key|697359|text|在我的例子中，我尝试了上面的大部分答案。我解决这个问题的办法是：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|697360|清除.m2/repository文件夹中的所有项目|unordered-list-item|offset|length|style|CODE|697361|卸载Intellij最终版本|697362|安装社区版本|697363|真是太棒了！|697364|entityMap^0|0|2|E|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@$E|S|F|T|G|H]]|9|@]|A|$]]|$1|I|3|J|5|D|7|U|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|V|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|W|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|P|$]]

In my case, I tried most of the answers above. I solve this problem by:
<ul>
<li>Cleaning all items in the <code>.m2/repository</code> folder</li>
<li>Uninstall Intellij Ultimate Version</li>
<li>Install Community Version</li>
</ul>
It so amazingly worked!

blocks|key|2234515|text|最近我也面临着同样的问题。在我的事业中，所有的小费都是行不通的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2234516|但我修好了。|2234517|转到Intellij设置，找到Maven，在其中您需要打开Repository选项卡并更新maven和本地repos。就这样。|2234518|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

Recently I faced the same issue.
All tips doesn't work in my cause.
But I fix it.
Go to Intellij idea setting, find Maven, and in it you need to open Repository tab and update maven and local repos. That's all.

blocks|key|695967|text|我只是删除了存储在.m2\repository\org\apache\maven\plugins中的所有maven插件，IntelliJ再次下载了所有插件--它解决了我的问题，对我来说很好！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|695968|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I just delete all my maven plugins stored in .m2\repository\org\apache\maven\plugins, and IntelliJ downloaded all the plugins again a it solve my problem and it worked fine for me!!!

blocks|key|61980|text|这对我来说很管用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|61981|转到Settings+-->+Maven+-->+importer+->+JDK作为导入器->使用“”选项，而不是使用以前定制的JDK集。|ordered-list-item|61982|重新构建/重新导入所有依赖项。|61983|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$]]|$1|E|3|F|5|D|7|K|8|@]|9|@]|A|$]]|$1|G|3|-4|5|6|7|L|8|@]|9|@]|A|$]]]|H|$]]

This worked for me
<ol>
<li>Go to Settings --&gt; Maven --&gt; Importing --&gt; JDK for importer --&gt;
use &quot;Use Project JDK&quot; option instead of a custom JDK set previously.</li>
<li>Re-build/re-import all the dependencies.</li>
</ol>

blocks|key|62013|text|这些解决方案对我都没有用。经过几个小时的痛苦，事实证明这个问题是我引进项目的方式造成的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|62014|上下文：导入新生成的带有Web和Kafka依赖项的Spring项目。|offset|length|style|BOLD|62015|问题：插件依赖项“找不到”，IntelliJ无法编译该应用程序，尽管mvn+clean+compile在控制台上运行良好。|CODE|62016|不好的方式:使用“新>项目从现有资源导入它的.”选项。|62017|的好方法:使用“Open.”导入它的选项。|62018|从坏到好的解决方案：删除项目，从版本控制中删除并重新克隆回购，以确保所有gitignored+IntelliJ文件都被删除，并使用“打开.”将其导入IntelliJ。选项。|62019|entityMap^0|0|0|4|0|0|3|Y|H|0|0|M|0|0|I|0|5|5|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@$D|U|E|V|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|W|8|@$D|X|E|Y|F|G]|$D|Z|E|10|F|J]]|9|@]|A|$]]|$1|K|3|L|5|6|7|11|8|@$D|12|E|13|F|G]]|9|@]|A|$]]|$1|M|3|N|5|6|7|14|8|@$D|15|E|16|F|G]]|9|@]|A|$]]|$1|O|3|P|5|6|7|17|8|@$D|18|E|19|F|G]]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|1A|8|@]|9|@]|A|$]]]|R|$]]

None of these solutions worked for me. After a painful few hours, it turned out that the issue was caused by the way I imported the project.
Context: importing freshly generated Spring Initializr project with Web &amp; Kafka dependencies.
Issue: plugin dependency was &quot;Not found&quot; and IntelliJ couldn't compile the app, even though <code>mvn clean compile</code> ran fine on the console.
The bad way: Importing it using the &quot;New &gt; Project from Existing Sources...&quot; option.
The good way: Importing it using the &quot;Open...&quot; option.
Solution to go from the bad to the good: remove the project, delete and re-clone the repo from version control to make sure all gitignored IntelliJ files are removed, and import it into IntelliJ with the &quot;Open...&quot; option.

blocks|key|697430|text|我在Ubuntu18.04上使用了打包为snap的社区版本。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|697431|每次发布IntelliJ时，我都会遇到这样的问题。|697432|在这种情况下，我的工作解决方案是调用无效缓存，并从文件中重新启动--men也会标记索引删除。|697433|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

I use the community edition packaged as snap on Ubuntu 18.04.
I experience that issue each time there a IntelliJ release.
In that scenario, my working solution is to invoke the invalidate cache and restart from the file menù flagging the indexes removal too.

blocks|key|62063|text|2021年6月：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|62064|没有删除，没有再导入。|62065|我所做的是，我要：|62066|C:\Users\dell\.m2\repository\org\apache\maven\plugins|code-block|syntax|javascript|62067|然后双击每个插件文件夹，看看它是什么版本下载。|62068|然后我回到pom文件，根据下载的版本，我仔细地更改了<version>....</version>标记中的那些版本。然后刷新。|offset|length|style|CODE|62069|那样的话，所有的红色标记都消失了，甚至那些黄色的标记也不见了。|62070|都干净了。|62071|这是我的完整的pom文件，请进一步通知。该项目为JavaFx%2BMaven和Shade：|62072|<?xml+version="1.0"+encoding="UTF-8"?>
<project+xmlns="http://maven.apache.org/POM/4.0.0"
+++++++++xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+++++++++xsi:schemaLocation="http://maven.apache.org/POM/4.0.0+http://maven.apache.org/xsd/maven-4.0.0.xsd">
++++<modelVersion>4.0.0</modelVersion>

++++<groupId>main.java.sample</groupId>
++++<artifactId>ThreeColumnTable</artifactId>
++++<version>1.0-SNAPSHOT</version>

++++<properties>
++++++++<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
++++++++<maven.compiler.source>11</maven.compiler.source>
++++++++<maven.compiler.target>11</maven.compiler.target>
++++</properties>
++++<dependencies>
++++++++<dependency>
++++++++++++<groupId>org.openjfx</groupId>
++++++++++++<artifactId>javafx-controls</artifactId>
++++++++++++<version>15.0.1</version>
++++++++</dependency>
++++++++<dependency>
++++++++++++<groupId>org.openjfx</groupId>
++++++++++++<artifactId>javafx-fxml</artifactId>
++++++++++++<version>15.0.1</version>
++++++++</dependency>
++++++++<dependency>
++++++++++++<groupId>org.apache.maven.plugins</groupId>
++++++++++++<artifactId>maven-install-plugin</artifactId>
++++++++++++<version>2.4</version>
++++++++++++<type>maven-plugin</type>
++++++++</dependency>

++++++++<dependency>
++++++++++++<groupId>org.apache.maven.plugins</groupId>
++++++++++++<artifactId>maven-deploy-plugin</artifactId>
++++++++++++<version>2.7</version>
++++++++++++<type>maven-plugin</type>
++++++++</dependency>
++++</dependencies>
++++<build>
++++++++<plugins>
++++++++++++<plugin>
++++++++++++++++<groupId>org.apache.maven.plugins</groupId>
++++++++++++++++<artifactId>maven-compiler-plugin</artifactId>
++++++++++++++++<version>3.8.0</version>
++++++++++++++++<configuration>
++++++++++++++++++++<source>11</source>
++++++++++++++++++++<target>11</target>
++++++++++++++++++++<release>11</release>
++++++++++++++++</configuration>
++++++++++++</plugin>
++++++++++++<plugin>
++++++++++++++++<groupId>org.apache.maven.plugins</groupId>
++++++++++++++++<artifactId>maven-resources-plugin</artifactId>
++++++++++++++++<version>2.6</version>
++++++++++++++++<executions>
++++++++++++++++++++<execution>
++++++++++++++++++++++++<phase>test</phase>
++++++++++++++++++++++++<goals>
++++++++++++++++++++++++++++<goal>resources</goal>
++++++++++++++++++++++++++++<goal>testResources</goal>
++++++++++++++++++++++++</goals>
++++++++++++++++++++</execution>
++++++++++++++++</executions>
++++++++++++</plugin>
++++++++++++<plugin>
++++++++++++++++<groupId>org.apache.maven.plugins</groupId>
++++++++++++++++<artifactId>maven-project-info-reports-plugin</artifactId>
++++++++++++++++<version>3.1.2</version>
++++++++++++</plugin>
++++++++++++<plugin>
++++++++++++++++<groupId>org.apache.maven.plugins</groupId>
++++++++++++++++<artifactId>maven-clean-plugin</artifactId>
++++++++++++++++<version>3.1.0</version>
++++++++++++++++<configuration>
++++++++++++++++++++<filesets>
++++++++++++++++++++++++<fileset>
++++++++++++++++++++++++++++<directory>src/main/generated-groovy-stubs</directory>
++++++++++++++++++++++++</fileset>
++++++++++++++++++++</filesets>
++++++++++++++++</configuration>
++++++++++++</plugin>
++++++++++++<plugin>
++++++++++++++++<groupId>org.apache.maven.plugins</groupId>
++++++++++++++++<artifactId>maven-jar-plugin</artifactId>
++++++++++++++++<version>2.4</version>
++++++++++++++++<configuration>
++++++++++++++++++++<archive>
++++++++++++++++++++++++<manifest>
++++++++++++++++++++++++++++<mainClass>org.example.App</mainClass>
++++++++++++++++++++++++++++<manifestFile>src/main/resources/META-INF/MANIFEST.MF</manifestFile>
++++++++++++++++++++++++</manifest>
++++++++++++++++++++</archive>
++++++++++++++++</configuration>
++++++++++++</plugin>
++++++++++++<plugin>
++++++++++++++++<groupId>org.openjfx</groupId>
++++++++++++++++<artifactId>javafx-maven-plugin</artifactId>
++++++++++++++++<version>0.0.1</version>
++++++++++++++++<configuration>
++++++++++++++++++++<mainClass>org.example.App</mainClass>
++++++++++++++++</configuration>
++++++++++++</plugin>
++++++++++++<plugin>
++++++++++++++++<groupId>org.apache.maven.plugins</groupId>
++++++++++++++++<artifactId>maven-shade-plugin</artifactId>
++++++++++++++++<version>3.2.4</version>
++++++++++++++++<executions>
++++++++++++++++++++<execution>
++++++++++++++++++++++++<goals>
++++++++++++++++++++++++++++<goal>shade</goal>
++++++++++++++++++++++++</goals>
++++++++++++++++++++++++<configuration>
++++++++++++++++++++++++++++<shadedArtifactAttached>true</shadedArtifactAttached>
++++++++++++++++++++++++++++<shadedClassifierName>project-classifier</shadedClassifierName>
++++++++++++++++++++++++++++<transformers>
++++++++++++++++++++++++++++++++<transformer+implementation=
+++++++++++++++++++++++++++++++++++++++++++++++++++++"org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
++++++++++++++++++++++++++++++++++++<mainClass>org.example.Main</mainClass>
++++++++++++++++++++++++++++++++</transformer>
++++++++++++++++++++++++++++</transformers>

++++++++++++++++++++++++</configuration>
++++++++++++++++++++</execution>
++++++++++++++++</executions>
++++++++++++</plugin>
++++++++</plugins>
++++</build>
</project>|62073|entityMap^0|0|0|0|0|0|Q|N|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|13|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|14|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|15|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|16|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|17|8|@$O|18|P|19|Q|R]]|9|@]|A|$]]|$1|S|3|T|5|6|7|1A|8|@]|9|@]|A|$]]|$1|U|3|V|5|6|7|1B|8|@]|9|@]|A|$]]|$1|W|3|X|5|6|7|1C|8|@]|9|@]|A|$]]|$1|Y|3|Z|5|H|7|1D|8|@]|9|@]|A|$I|J]]|$1|10|3|-4|5|6|7|1E|8|@]|9|@]|A|$]]]|11|$]]

June/2021:
No Delete, No Reimport.
What I did is, I was going to :
<pre><code>C:\Users\dell\.m2\repository\org\apache\maven\plugins
</code></pre>
Then double Click on every Plugin Folders, And see what version it is downloaded.
Then I came back to pom file, and according to downloaded version, I carefully changes those versions in <code>&lt;version&gt;....&lt;/version&gt;</code> Tags. Then refresh.
And That way, All red marks are gone, Even gone those Yellow Marks.
All Clean.
Here is my full pom file for further notice. The Project is JavaFx+Maven with Shade :
<pre><code>&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;
&lt;project xmlns=&quot;http://maven.apache.org/POM/4.0.0&quot;
 xmlns:xsi=&quot;http://www.w3.org/2001/XMLSchema-instance&quot;
 xsi:schemaLocation=&quot;http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd&quot;&gt;
 &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt;

 &lt;groupId&gt;main.java.sample&lt;/groupId&gt;
 &lt;artifactId&gt;ThreeColumnTable&lt;/artifactId&gt;
 &lt;version&gt;1.0-SNAPSHOT&lt;/version&gt;

 &lt;properties&gt;
 &lt;project.build.sourceEncoding&gt;UTF-8&lt;/project.build.sourceEncoding&gt;
 &lt;maven.compiler.source&gt;11&lt;/maven.compiler.source&gt;
 &lt;maven.compiler.target&gt;11&lt;/maven.compiler.target&gt;
 &lt;/properties&gt;
 &lt;dependencies&gt;
 &lt;dependency&gt;
 &lt;groupId&gt;org.openjfx&lt;/groupId&gt;
 &lt;artifactId&gt;javafx-controls&lt;/artifactId&gt;
 &lt;version&gt;15.0.1&lt;/version&gt;
 &lt;/dependency&gt;
 &lt;dependency&gt;
 &lt;groupId&gt;org.openjfx&lt;/groupId&gt;
 &lt;artifactId&gt;javafx-fxml&lt;/artifactId&gt;
 &lt;version&gt;15.0.1&lt;/version&gt;
 &lt;/dependency&gt;
 &lt;dependency&gt;
 &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
 &lt;artifactId&gt;maven-install-plugin&lt;/artifactId&gt;
 &lt;version&gt;2.4&lt;/version&gt;
 &lt;type&gt;maven-plugin&lt;/type&gt;
 &lt;/dependency&gt;

 &lt;dependency&gt;
 &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
 &lt;artifactId&gt;maven-deploy-plugin&lt;/artifactId&gt;
 &lt;version&gt;2.7&lt;/version&gt;
 &lt;type&gt;maven-plugin&lt;/type&gt;
 &lt;/dependency&gt;
 &lt;/dependencies&gt;
 &lt;build&gt;
 &lt;plugins&gt;
 &lt;plugin&gt;
 &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
 &lt;artifactId&gt;maven-compiler-plugin&lt;/artifactId&gt;
 &lt;version&gt;3.8.0&lt;/version&gt;
 &lt;configuration&gt;
 &lt;source&gt;11&lt;/source&gt;
 &lt;target&gt;11&lt;/target&gt;
 &lt;release&gt;11&lt;/release&gt;
 &lt;/configuration&gt;
 &lt;/plugin&gt;
 &lt;plugin&gt;
 &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
 &lt;artifactId&gt;maven-resources-plugin&lt;/artifactId&gt;
 &lt;version&gt;2.6&lt;/version&gt;
 &lt;executions&gt;
 &lt;execution&gt;
 &lt;phase&gt;test&lt;/phase&gt;
 &lt;goals&gt;
 &lt;goal&gt;resources&lt;/goal&gt;
 &lt;goal&gt;testResources&lt;/goal&gt;
 &lt;/goals&gt;
 &lt;/execution&gt;
 &lt;/executions&gt;
 &lt;/plugin&gt;
 &lt;plugin&gt;
 &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
 &lt;artifactId&gt;maven-project-info-reports-plugin&lt;/artifactId&gt;
 &lt;version&gt;3.1.2&lt;/version&gt;
 &lt;/plugin&gt;
 &lt;plugin&gt;
 &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
 &lt;artifactId&gt;maven-clean-plugin&lt;/artifactId&gt;
 &lt;version&gt;3.1.0&lt;/version&gt;
 &lt;configuration&gt;
 &lt;filesets&gt;
 &lt;fileset&gt;
 &lt;directory&gt;src/main/generated-groovy-stubs&lt;/directory&gt;
 &lt;/fileset&gt;
 &lt;/filesets&gt;
 &lt;/configuration&gt;
 &lt;/plugin&gt;
 &lt;plugin&gt;
 &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
 &lt;artifactId&gt;maven-jar-plugin&lt;/artifactId&gt;
 &lt;version&gt;2.4&lt;/version&gt;
 &lt;configuration&gt;
 &lt;archive&gt;
 &lt;manifest&gt;
 &lt;mainClass&gt;org.example.App&lt;/mainClass&gt;
 &lt;manifestFile&gt;src/main/resources/META-INF/MANIFEST.MF&lt;/manifestFile&gt;
 &lt;/manifest&gt;
 &lt;/archive&gt;
 &lt;/configuration&gt;
 &lt;/plugin&gt;
 &lt;plugin&gt;
 &lt;groupId&gt;org.openjfx&lt;/groupId&gt;
 &lt;artifactId&gt;javafx-maven-plugin&lt;/artifactId&gt;
 &lt;version&gt;0.0.1&lt;/version&gt;
 &lt;configuration&gt;
 &lt;mainClass&gt;org.example.App&lt;/mainClass&gt;
 &lt;/configuration&gt;
 &lt;/plugin&gt;
 &lt;plugin&gt;
 &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
 &lt;artifactId&gt;maven-shade-plugin&lt;/artifactId&gt;
 &lt;version&gt;3.2.4&lt;/version&gt;
 &lt;executions&gt;
 &lt;execution&gt;
 &lt;goals&gt;
 &lt;goal&gt;shade&lt;/goal&gt;
 &lt;/goals&gt;
 &lt;configuration&gt;
 &lt;shadedArtifactAttached&gt;true&lt;/shadedArtifactAttached&gt;
 &lt;shadedClassifierName&gt;project-classifier&lt;/shadedClassifierName&gt;
 &lt;transformers&gt;
 &lt;transformer implementation=
 &quot;org.apache.maven.plugins.shade.resource.ManifestResourceTransformer&quot;&gt;
 &lt;mainClass&gt;org.example.Main&lt;/mainClass&gt;
 &lt;/transformer&gt;
 &lt;/transformers&gt;

 &lt;/configuration&gt;
 &lt;/execution&gt;
 &lt;/executions&gt;
 &lt;/plugin&gt;
 &lt;/plugins&gt;
 &lt;/build&gt;
&lt;/project&gt;
</code></pre>

blocks|key|2234669|text|其他的解决方案对我都没有用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2234670|我的解决方案：|2234671|Maven设置->存储库->在列表中选择本地存储库，更新|2234672|很有魅力！|2234673|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

None of the other solutions worked for me.
My solution:
Maven Settings -&gt; Repositories -&gt; select Local Repository in the list, Update
Worked like a charm!

blocks|key|62104|text|必须添加依赖项。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|62105|这个问题很老，但我希望我的回答能帮助那些找到它的人。|62106|参考链接|offset|length|62107|
<dependency>
++++<groupId>org.apache.maven.plugins</groupId>
++++<artifactId>maven-dependency-plugin</artifactId>
++++<version>3.1.1</version>
</dependency>|code-block|syntax|javascript|62108|entityMap|0|LINK|mutability|MUTABLE|url|https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-dependency-plugin/3.1.1^0|0|0|2|2|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@$F|X|G|Y|1|Z]]|A|$]]|$1|H|3|I|5|J|7|10|8|@]|9|@]|A|$K|L]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

You must add the dependency
This question is old, but I hope my answer will help those who find it
Reference
[link]
<a href="https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-dependency-plugin/3.1.1" rel="nofollow noreferrer">https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-dependency-plugin/3.1.1</a>
<pre><code>&lt;!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-dependency-plugin --&gt;
&lt;dependency&gt;
 &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
 &lt;artifactId&gt;maven-dependency-plugin&lt;/artifactId&gt;
 &lt;version&gt;3.1.1&lt;/version&gt;
&lt;/dependency&gt;
</code></pre>

blocks|key|2234739|text|从下面删除所有文件夹，并执行“项目”刷新按钮，它对我有效。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2234740|C:\Users\<username>\.m2\repository\org\apache\maven\plugins|code-block|syntax|javascript|2234741|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Deleted all folders from below and did the &quot;Reload All Maven Projects&quot; refresh button and it worked for me.
<pre><code>C:\Users\&lt;username&gt;\.m2\repository\org\apache\maven\plugins
</code></pre>

blocks|key|62201|text|我将依赖项放在依赖项中，并解决了我的问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|62202|<dependencies>
++++<dependency>
++++++++<groupId>org.apache.maven.plugins</groupId>
++++++++<artifactId>maven-project-info-reports-plugin</artifactId>
++++++++<version>3.0.0</version>
++++</dependency>
</dependencies>|code-block|syntax|javascript|62203|我忽略了，它是，它不同于：|62204|dependencyManagement只声明依赖项，而不引入它们.|offset|length|style|BOLD|62205|因此，无论是清除存储库文件夹中的所有项，还是输入mvn清洁安装-e+-U，两者都不起作用。|62206|entityMap^0|0|0|0|0|Y|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|V|8|@$K|W|L|X|M|N]]|9|@]|A|$]]|$1|O|3|P|5|6|7|Y|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

I put the dependency in dependencies, and solved my problem:
<pre><code>&lt;dependencies&gt;
 &lt;dependency&gt;
 &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
 &lt;artifactId&gt;maven-project-info-reports-plugin&lt;/artifactId&gt;
 &lt;version&gt;3.0.0&lt;/version&gt;
 &lt;/dependency&gt;
&lt;/dependencies&gt;
</code></pre>
I neglected the &lt;pluginManagement&gt;, it's as &lt;dependencyManagement&gt; which is different from &lt;dependencies&gt;:
dependencyManagement only declares dependencies, it does not introduce them.
So whether I clean all items in my repository folder or type mvn clean install -e -U, both don't work.

After updating IntelliJ from version 12 to 13, the following Maven-related plugins cannot be resolved:
<pre><code>org.apache.maven.plugins:maven-clean-plugin:2.4.1
org.apache.maven.plugins:maven-deploy-plugin
org.apache.maven.plugins:maven-install-plugin
org.apache.maven.plugins:maven-site-plugin
</code></pre>
When using IntelliJ 12, these were not in the plugins list. Somehow they've been added after the update and now IntelliJ complains they cannot be found. Where can I remove these plugins from the list OR resolve the problem by installing them?
I can run maven goals <code>clean</code> and <code>compile</code> without problem, but the profile/plugins appear red with warnings in the IDE.
EDIT after 8 years: Please also have a look at all other good answers here. The accepted answer is a common solution but might not work for you or for your IDE version

Maven plugins can not be found in IntelliJ

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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将IntelliJ从版本12更新到13后，无法解析以下与Maven相关的插件：org.apache.maven.plugins:maven-clean-plugin:2.4.1org.apache.maven.plugins:maven-deploy-pluginorg.apache.maven.plugins:mav...

问在IntelliJ中找不到Maven插件
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