blocks|key|1713249|text|要解决此问题，必须删除位于以下目录中的.snap文件：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1713250|<workspace-directory>\.metadata\.plugins\org.eclipse.core.resources|code-block|syntax|javascript|1713251|删除此文件后，您可以毫无问题地启动Eclipse。|1713252|entityMap^0|J|5|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|S|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

To resolve this issue, you have to delete the <code>.snap</code> file located in the directory:

<pre><code>&lt;workspace-directory&gt;\.metadata\.plugins\org.eclipse.core.resources
</code></pre>

After deleting this file, you could start Eclipse with no problem.

blocks|key|1713265|text|创建新的工作区也可以解决此问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1713266|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|$]]

Creating a new workspace can also resolve this issue..

blocks|key|1926897|text|您可以右键单击apache-tomcat，选择属性，然后单击Restore+Default。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1926898|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|$]]

You can right click on apache-tomcat, choose properties, click Restore Default.

blocks|key|1713325|text|在我的例子中，这个问题是由传递的参数中的语法错误引起的。在使用'-D‘时，键和值之间有一个空格|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1713326|即|1713327|-DMyArg=+MyValue|code-block|syntax|javascript|1713328|而不是|1713329|-DMyArg=MyValue|1713330|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

In my case the problem was caused by a syntax error in the arguments being passed. I had a space between the key &amp; value when using '-D' 

i.e. 

<pre><code>-DMyArg= MyValue
</code></pre>

instead of 

<pre><code>-DMyArg=MyValue
</code></pre>

blocks|key|1926959|text|尝试在服务器控制台中删除现有的tomcat服务器，如果没有控制台，则可以转到“显示视图->server”，然后右击服务器将其删除。添加新的服务器这肯定会对你有帮助。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1926960|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|$]]

Try to delete the existing tomcat server in the server console ,if you don't have the console then you can go to "Show view ->server" then delete the server by right clicking on it. Add new server this will surely help you.

blocks|key|1713456|text|我在我的tomcat服务器上也有同样的问题，但是当我深入检查时，我发现我在web.xml文件中添加了一个新的标签，服务器不接受它，所以检查你的文件，如果发生了任何更新，然后重新启动你的tomcat，就会很好。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1713457|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 had the same problem in my tomcat server but when i check deeply i found that i add a new tag in my web.xml file and the server doesn't accept it so check your file to if any update happened then restart your tomcat and will be good .

blocks|key|1713574|text|双击eclipse+server选项卡中的apache+server。现在将tomacat+admin+port更改为8010，http+port更改为8082，Ajp+port更改为8011。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1713575|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|$]]

double click on apache server in eclipse server tab. now change tomacat admin port to 8010,
http port change to 8082 and Ajp port change to 8011.

blocks|key|1927209|text|在我的eclipse工作区中，通过执行以下步骤解决了这个问题。窗口-->首选项-->网络连接-->将'Active+Provider‘改为'Direct'，而不是'Native’。你可以试一下。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1927210|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 eclipse workspace, it was resolved by doing the below steps.
Window --> Preferences --> Network Connections --> Change 'Active Provider' to 'Direct', instead of 'Native'. You may try it.

blocks|key|1927251|text|在我的例子中，问题出在xml代码中。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1927252|我的web.xml文件如下所示：|1927253|<!DOCTYPE+web-app+PUBLIC
+"-//Sun+Microsystems,+Inc.//DTD+Web+Application+2.3//EN"
+"http://java.sun.com/dtd/web-app_2_3.dtd"+>

<web-app>
++++<display-name>Archetype+Created+Web+Application</display-name>

++++<servlet>
++++++++<servlet-name>index</servlet-name>
++++++++<jsp-file>index.jsp</jsp-file>
++++</servlet>

++++<servlet-mapping>
++++++++<servlet-name>index</servlet-name>
++++++++<url-pattern>/</url-pattern>
++++</servlet-mapping>

</web-app>|code-block|syntax|javascript|1927254|但我把它改成了|1927255|<!DOCTYPE+web-app+PUBLIC
+"-//Sun+Microsystems,+Inc.//DTD+Web+Application+2.3//EN"
+"http://java.sun.com/dtd/web-app_2_3.dtd"+>

<web-app>
++++<display-name>Archetype+Created+Web+Application</display-name>

</web-app>|1927256|现在服务器可以正常加载了。真奇怪。|1927257|entityMap^0|B|3|0|2|7|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|X|8|@$9|Y|A|Z|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|10|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|11|8|@]|D|@]|E|$]]|$1|O|3|P|5|J|7|12|8|@]|D|@]|E|$K|L]]|$1|Q|3|R|5|6|7|13|8|@]|D|@]|E|$]]|$1|S|3|-4|5|6|7|14|8|@]|D|@]|E|$]]]|T|$]]

In my case, the problem was in the <code>xml</code> code somehow.

My <code>web.xml</code> file looked like this:

<pre><code>&lt;!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" &gt;

&lt;web-app&gt;
 &lt;display-name&gt;Archetype Created Web Application&lt;/display-name&gt;

 &lt;servlet&gt;
 &lt;servlet-name&gt;index&lt;/servlet-name&gt;
 &lt;jsp-file&gt;index.jsp&lt;/jsp-file&gt;
 &lt;/servlet&gt;

 &lt;servlet-mapping&gt;
 &lt;servlet-name&gt;index&lt;/servlet-name&gt;
 &lt;url-pattern&gt;/&lt;/url-pattern&gt;
 &lt;/servlet-mapping&gt;

&lt;/web-app&gt;
</code></pre>

but I changed it to look like

<pre><code>&lt;!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" &gt;

&lt;web-app&gt;
 &lt;display-name&gt;Archetype Created Web Application&lt;/display-name&gt;

&lt;/web-app&gt;
</code></pre>

and now the server loads up properly. 
Strange.

blocks|key|1713756|text|在我的例子中，错误是找不到servlet-api.jar。不知道为什么它突然开始给出错误。因为之前它运行时没有任何问题。在build+path选项中提供servlet-api.jar之后，服务器成功启动。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1713757|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 the error was it was not able to find servlet-api.jar. Don't know why suddenly it started giving error for that. Because previously it was running without any issue. After giving the servlet-api.jar in the build path option the server started successfully.

blocks|key|1713785|text|如果所有给出的答案对你都不起作用，那么只需改变你当前的工作空间。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1713786|文件->切换工作区|1713787|这将会解决你的问题。|1713788|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|$]]

If all given answer are not working for you then just change your current workspace.

file-> switch worksspace

It would be solve your problem.

blocks|key|1927885|text|这个周末我也遇到了类似的问题。我尝试了上面提到的所有花招，但都没有奏效。(在Eclipse中工作，露娜)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1927886|即为"RefreshServlet“，如下所示：|1927887|​|1927888|📷|atomic|offset|length|1927889|1927890|让练习servlets的人理解"AutoRefresh“的功能。当我从我的应用程序中删除这个servlet时，它工作得很好，但是当我尝试添加和运行这个servlet时，它给出了相同的错误"Apache+TomcatV7.0无法启动“。|1927891|不知道为什么，只有删除这个servlet才能很好地运行应用程序的其余部分。|1927892|因此，我的底线建议是，如果没有任何其他技巧有效，那么尝试删除任何最新的servlet或您在收到此错误之前刚刚创建的任何类，它可能也适用于您的应用程序的其余部分。|1927893|任何进一步的解释都将不胜感激。谢谢|1927894|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/0a9e967f1da16f7c387334c835da33b2.jpeg|imageAlt^0|0|0|0|0|1|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|13|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|14|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|15|8|@]|9|@$I|16|J|17|1|18]]|A|$]]|$1|K|3|E|5|6|7|19|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|1A|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|1B|8|@]|9|@]|A|$]]|$1|P|3|Q|5|6|7|1C|8|@]|9|@]|A|$]]|$1|R|3|S|5|6|7|1D|8|@]|9|@]|A|$]]|$1|T|3|-4|5|6|7|1E|8|@]|9|@]|A|$]]]|U|$V|$5|W|X|Y|A|$Z|10|11|-4]]]]

I was facing similar problem this weekend. Tried all the above mentioned tricks, but none of them worked of me. (Working in Eclipse LUNA)

Then i analysed that just before creating a particular servlet, i was running Apache Tomcat v7.0 successfully. Which was "RefreshServlet" as shown below :

<a href="https://i.stack.imgur.com/tr44Z.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/tr44Z.jpg" alt="RefreshServlet.java"></a>

So that practicing servlets to understand the "AutoRefresh" functioning.
When i remove this servlet from my application, it works fine, but when i try to add and run this servlet, it gives the same error "Apache Tomcat v7.0 failed to start"

Don't know why, but only removing this servlet works fine for me to run the rest of my application.

So, the bottom line suggestion from me would be that if not any other trick is working, then try removing any latest servlet or any class you just created before getting this error and it may work fine for you too for the rest of the application.

Any further explanation would be appreciated. Thanks

blocks|key|1928052|text|在我的例子中，问题出在web.xml文件中，我忘记在url模式前面加上一个"/“(例如/login.do)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1928053|正如@Ajak6上面提到的，通过添加servlet+API作为项目的外部JAR库，解决了我的问题。|1928054|然而，我找到了一种更好的方法，将Tomcat添加到目标运行时，如下所示；|1928055|1)项目>属性|1928056|2)在侧边菜单中选择“目标运行时”|1928057|3)选择Tomcat+(点击apply)|1928058|4)点击确定|1928059|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|S|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|T|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|U|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|V|8|@]|9|@]|A|$]]|$1|N|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|O|$]]

In my case, the problem was in the web.xml file, where i forgot to precede the url-pattern with a "/" (e.g. /login.do).

What solved my problem was, as mentioned above by @Ajak6, by adding the servlet API as an external JAR library for the project.

However, I found a better way, by adding Tomcat to the target runtime as follow;

1) project > properties

2) on the side menu select "Targeted runtimes"

3) select Tomcat (click apply)

4) click ok

blocks|key|1928097|text|在我的例子中，问题出在运行Tomcat的另一个实例上。我从服务中停止了它，问题就解决了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1928098|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, the issue was with another instance of Tomcat was running. I stopped it from services and the issue got resolved

blocks|key|1928151|text|检查您的web描述符(web.xml)或在您的servlet上(在您注释的地方，检查sor类似于'@WebServlet("/servlet_name")')中的任何duplicates.If，删除它们。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1928152|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|$]]

Check your web descriptor (web.xml) or on your servlets (Where you annotate, check sor something like '@WebServlet("/servlet_name")') for any duplicates.If any, remove them.

blocks|key|1714872|text|前一秒一切都运行得很好，然后我的服务器开始给我这个错误。我看了这里提到的所有答案，对我有效的是这个简单的解决方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1714873|删除服务器，然后配置新服务器|1714874|如果您确定没有更改任何内容，并且错误刚刚弹出，请不要开始删除.snap文件或其他临时文件。这样做只会导致更多的问题。如果错误是由于您所做的某些更改而发生的，则此错误肯定是由于web.xml文件中的某些错误造成的。|1714875|附注:更改工作区绝对不会对您有任何好处，因为如果问题出在您的项目中，那么当您导入项目时，它仍然会出现在新的工作区中！|1714876|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|$]]

Everything was working fine one second and then my server started giving me this error. I went through all the answers mentioned here and what worked for me was this simple solution:

Deleting the server and then configuring a new one

If you're sure that you didn't change anything and the error just popped up, DO NOT start deleting .snap files or other temp files. Doing that will only cause more problems. And if the error occurred because of some changes made by you, this error is definitely going to be because of some errors in web.xml file.

P.S. Changing the workspace will do you absolutely no good, because if the problem is in your project, then it'll still occur in the new work space when you'll import the project!

blocks|key|1714977|text|尝试上述所有步骤后，问题仍未解决。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1714978|最后，通过以下步骤解决了这个问题。|1714979|1-检查工作空间目录中的.log文件。Java版本的问题|1714980|“原因:+java.io.IOException:无法运行程序"C:\jdk1.7.0_45\bin\java"：CreateProcess+error=193，%251不是在org.eclipse.debug.core.DebugPlugin.exec(DebugPlugin.java:869)的java.lang.ProcessBuilder.start(未知源)的java.lang.Runtime.exec(未知源)的java.lang.Runtime.exec(未知源)的有效Win32应用程序...+80更多|1714981|原因:+java.io.IOException:+CreateProcess+error=193，%251在java.lang.ProcessImpl的java.lang.ProcessImpl.create(本机方法)中不是有效的Win32应用程序。(未知源)在java.lang.ProcessImpl.start(未知源)中|1714982|我已经安装了与操作系统兼容的正确JDK，并且问题已解决。PS:我已经通过eclipse显式地设置了JDK路径(窗口->首选项->已安装的JRE+)，但是在设置了正确的JDK路径之后，它对我来说工作得很好。|1714983|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|P|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|Q|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|R|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|S|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|M|$]]

After trying all above mentioned steps , issue was not resolved.

Finally it resolved with below steps.

1- Check .log file inside your work space directory. Issue with Java Version 

"Caused by: java.io.IOException: Cannot run program "C:\jdk1.7.0_45\bin\java": CreateProcess error=193, %1 is not a valid Win32 application
 at java.lang.ProcessBuilder.start(Unknown Source)
 at java.lang.Runtime.exec(Unknown Source)
 at java.lang.Runtime.exec(Unknown Source)
 at org.eclipse.debug.core.DebugPlugin.exec(DebugPlugin.java:869)
 ... 80 more

Caused by: java.io.IOException: CreateProcess error=193, %1 is not a valid Win32 application
 at java.lang.ProcessImpl.create(Native Method)
 at java.lang.ProcessImpl.(Unknown Source)
 at java.lang.ProcessImpl.start(Unknown Source)"

I have installed correct OS compatible JDK and issue was resolved.
PS: I have explicitly set JDK path through eclipse (Window->preference->installed JRE )but after setting correct JDK path ,it work fine for me.

blocks|key|1714985|text|打开您的web.xml文件。(如果你不知道它在哪里，那就用谷歌搜索一下。)它是这样的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1714986|<?xml+version="1.0"+encoding="UTF-8"?>
<web-app+xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"+xmlns="http://xmlns.jcp.org/xml/ns/javaee"+xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee+http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"+id="WebApp_ID"+version="3.1">
.
.
.
.
</web-app>|code-block|syntax|javascript|1714987|在<?xml+version="1.0"+encoding="UTF-8"?>行的正下方，添加一个标记<element>，并在最下面的</element>标记中结束它。好了。|offset|length|style|CODE|1714988|entityMap^0|0|0|1|12|1F|9|1V|A|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]|$I|T|J|U|K|L]|$I|V|J|W|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|N|$]]

open your web.xml file. (if you don't know where is it, then just google it.)
it is like this:

<pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
&lt;web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1"&gt;
.
.
.
.
&lt;/web-app&gt;
</code></pre>

just below the <code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;</code> line, add a tag <code>&lt;element&gt;</code> and close it in the very bottom with <code>&lt;/element&gt;</code> tag. Done.

blocks|key|1928405|text|我简单地关闭了eclipse中的所有其他项目，从而解决了我的问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1928406|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 solved my problem by closing all other projects in eclipse simply.

blocks|key|1715042|text|问题可能是servlet中的注释，请查看是否为servlet的URL模式使用了注释。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1715043|尝试将项目facet+(动态web项目)版本更改为2.5，并在web.xml中定义所有servlet条目，这应该可以解决问题。|1715044|您可以在eclipse中更改项目方面版本，方法是在项目属性中进行更改-->在搜索框中搜索"+facet“将动态web项目方面版本更改为2.5|1715045|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|$]]

The problem could be annotations in your servlet(s), see if you are using annotations for URL patterns for your servlets.

Try to change the project facet (Dynamic web project ) version to 2.5 and define all your servlet entries in web.xml this should solve the issue.

you can change project facet version in eclipse by changing it in project properties-->search for "facet" in the search box change the Dynamic web project facet version to 2.5

blocks|key|1715125|text|1-转到您的工作区目录».metadata».plugins»org.eclipse.wst.server.core文件夹。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1715126|2-删除临时文件夹。|1715127|3-重启Eclipse+IDE|1715128|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|$]]

1-Go to your workspace directory » .metadata » .plugins » org.eclipse.wst.server.core folder.

2- Delete the tmp folder.

3- Restart your Eclipse IDE

blocks|key|1928644|text|创建新项目并将所有文件导入到为我工作的新project.it+...|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1928645|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|$]]

Create New Project and Import all files to the new project.it worked for me....

blocks|key|1715274|text|我修复了这个问题，右击服务器选项卡中的tomcat服务器，然后单击“清理Tomcat工作目录”。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1715275|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 fixed this problem by right clicking on tomcat server in Server tab and click "Clean Tomcat Work Directory"

blocks|key|1715469|text|在我的例子中，从web.xml中删除servlet标签并在tomcat+lib文件夹中添加缺少的库解决了这个问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1715470|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, removing servlet tags from web.xml and adding missing libraries in tomcat lib folder solved the issue.

So got this project which worked just fine before the weekend (have other problems, but at least Tomcat launched). Now when I try to launch the Tomcat server it immediately gives the following error:

<pre><code>Server Tomcat v7.0 Server at localhost failed to start.
</code></pre>

However, I can start Tomcat just fine via Terminal, and this problem is occurring in Eclipse (Eclipse Java EE IDE for Web Developers. Version: Juno Service Release 1
Build id: 20121004-1855)

I scoured several forums trying to find a solution but to no avail! Please help someone out in need.

"Server Tomcat v7.0 Server at localhost failed to start" without stack trace while it works in terminal

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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所以我在周末之前得到了这个项目，它工作得很好(还有其他问题，但至少Tomcat启动了)。现在，当我尝试启动Tomcat服务器时，它立即给出以下错误：Server Tomcat v7.0 Server at localhost failed to start.但是，我可以通过终端很好地启动Tomcat，这个问题发生在Ec...

问“服务器Tomcat v7.0服务器在本地主机上启动失败”，没有堆栈跟踪，而它在终端中工作
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问“服务器Tomcat v7.0服务器在本地主机上启动失败”，没有堆栈跟踪，而它在终端中工作EN