blocks|key|1798053|text|要从命令行为jar包使用IntelliJ+Java反编译器，请遵循此处提供的说明：https://github.com/JetBrains/intellij-community/tree/master/plugins/java-decompiler/engine|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1798054|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/JetBrains/intellij-community/tree/master/plugins/java-decompiler/engine^0|15|2I|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]]]]

To use the IntelliJ Java decompiler from the command line for a jar package follow the instructions provided here:
<a href="https://github.com/JetBrains/intellij-community/tree/master/plugins/java-decompiler/engine" rel="noreferrer">https://github.com/JetBrains/intellij-community/tree/master/plugins/java-decompiler/engine</a>

blocks|key|1798236|text|截至2017年8月和IntelliJ+V2017.2，公认的答案似乎不再完全准确:没有fernflower.jar可用。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1798237|jar文件名为java-decompiler.jar，不包含主清单...相反，您可以使用以下命令(从Mac安装)：|1798238|java+-cp+"/Applications/IntelliJ+IDEA.app/Contents/plugins/java-decompiler/lib/java-decompiler.jar"+org.jetbrains.java.decompiler.main.decompiler.ConsoleDecompiler|code-block|syntax|javascript|1798239|(您将获得错误的用法命令，但它确实可以工作)。|1798240|entityMap^0|17|E|0|7|J|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|T|8|@$9|U|A|V|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|W|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|X|8|@]|D|@]|E|$]]|$1|O|3|-4|5|6|7|Y|8|@]|D|@]|E|$]]]|P|$]]

As of August 2017 and IntelliJ V2017.2, the accepted answer does not seem to be entirely accurate anymore: there is no <code>fernflower.jar</code> to use. 

The jar file is called <code>java-decompiler.jar</code> and does not include a main manifest... Instead you can use the following command (from a Mac install):

<pre><code>java -cp "/Applications/IntelliJ IDEA.app/Contents/plugins/java-decompiler/lib/java-decompiler.jar" org.jetbrains.java.decompiler.main.decompiler.ConsoleDecompiler
</code></pre>

(you will get the wrong Usage command, but it does work).

blocks|key|1797774|text|IntelliJ+IDEA的反编译器在构建时并没有考虑到这种用法。它只是为了帮助程序员查看他们正在开发的java类的字节码。对于大量没有源代码的类文件的反编译，你需要一些其他的java反编译器，它是专门用于这项工作的，并且很可能会独立运行。如果你在谷歌上搜索，你应该会找到一堆。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1797775|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|$]]

The decompiler of IntelliJ IDEA was not built with this kind of usage in mind. It is only meant to help programmers peek at the bytecode of the java classes that they are developing. For decompiling lots of class files of which you do not have source code, you will need some other java decompiler, which is specialized for this job, and most likely runs standalone. If you google you should find a bunch.

blocks|key|1582938|text|您可以使用其中之一(您可以在线使用它们，也可以下载它们，这里有关于它们的一些信息)：http://www.javadecompilers.com/|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1582939|IntelliJ+IDEA使用的是芒花，但它不能处理最近的事情--比如字符串/枚举开关、泛型(没有亲自测试过这个，只读过它)，...我刚刚从上面的网站上尝试了cfr，结果和内置的反编译器是一样的(除了我的类中的Enum开关)。|1582940|entityMap|0|LINK|mutability|MUTABLE|url|http://www.javadecompilers.com/^0|16|V|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]]|C|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]]]

You could use one of these (you can both use them online or download them, there is some info about each of them) :
<a href="http://www.javadecompilers.com/" rel="nofollow">http://www.javadecompilers.com/</a>

The one IntelliJ IDEA uses is fernflower, but it can't handle recent things - like String/Enum switches, generics (didn't test this one personally, only read about it), ...
I just tried cfr from the above website and the result was the same as with the built-in decompiler (except for the Enum switch I had in my class).

blocks|key|1798310|text|试一试|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1798311|https://github.com/fesh0r/fernflower|offset|length|1798312|从下载jar|1798313|http://files.minecraftforge.net/maven/net/minecraftforge/fernflower/|1798314|命令：|1798315|java+-jar+fernflower.jar+-hes=0+-hdc=0+C:\binary++C:\source|code-block|syntax|javascript|1798316|将您的jar文件放在文件夹C:\binary中，源代码将被提取并打包到C:\source中的jar中。|1798317|享受吧！|1798318|entityMap|0|LINK|mutability|MUTABLE|url|1^0|0|0|10|0|0|0|0|1W|1|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|13|8|@]|9|@$D|14|E|15|1|16]]|A|$]]|$1|F|3|G|5|6|7|17|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|18|8|@]|9|@$D|19|E|1A|1|1B]]|A|$]]|$1|J|3|K|5|6|7|1C|8|@]|9|@]|A|$]]|$1|L|3|M|5|N|7|1D|8|@]|9|@]|A|$O|P]]|$1|Q|3|R|5|6|7|1E|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|1F|8|@]|9|@]|A|$]]|$1|U|3|-4|5|6|7|1G|8|@]|9|@]|A|$]]]|V|$W|$5|X|Y|Z|A|$10|C]]|11|$5|X|Y|Z|A|$10|I]]]]

Try

<a href="https://github.com/fesh0r/fernflower" rel="nofollow noreferrer">https://github.com/fesh0r/fernflower</a>

Download jar from 

<a href="http://files.minecraftforge.net/maven/net/minecraftforge/fernflower/" rel="nofollow noreferrer">http://files.minecraftforge.net/maven/net/minecraftforge/fernflower/</a>

Command :

<pre><code>java -jar fernflower.jar -hes=0 -hdc=0 C:\binary C:\source
</code></pre>

Place your jar file in folder C:\binary and source will be extracted and packed in a jar inside C:\source.

Enjoy!

blocks|key|1797815|text|不久前，我使用JAD+(IntelliJ)来实现这一点--我不认为JAva的反编译器在合并时就考虑到了导出。它更像是一个帮助查看源代码不可用的类的工具。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1797816|JAD仍然可以下载，但我认为没有人再维护它了：http://varaneckas.com/jad/|offset|length|1797817|它有许多插件，即Jadclipse+(你猜对了，这是在Eclipse中使用JAD的一种方式-请参阅反编译的类，其中的代码不可用:))。|1797818|entityMap|0|LINK|mutability|MUTABLE|url|http://varaneckas.com/jad/^0|0|N|Q|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@$D|R|E|S|1|T]]|A|$]]|$1|F|3|G|5|6|7|U|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|O]]]]

Some time ago I used JAD (JAva Decompiler) to achieve this - I do not think IntelliJ's decompiler was incorporated with exporting in mind. It is more of a tool to help look through classes where sources are not available.

JAD is still available for download, but I do not think anyone maintains it anymore: <a href="http://varaneckas.com/jad/" rel="nofollow">http://varaneckas.com/jad/</a>

There were numerous plugins for it, namely Jadclipse (you guessed it, a way to use JAD in Eclipse - see decompiled classes where code is not available :)).

blocks|key|1583367|text|我使用JD-GUI将所有反编译的java类提取为java文件。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1583368|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 use JD-GUI for extract all decompiled java classes to java files.

blocks|key|1798453|text|有人给出了很好的答案。我一步一步地做了另一条指令线索。首先，打开你的工作室并搜索。你可以找到解析器是芬花。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1798454|​|1798455|📷|atomic|offset|length|1798456|1798457|其次，我们可以在plugins目录中找到它。|1798458|/Applications/Android+Studio.app/Contents/plugins/java-decompiler/lib/java-decompiler.jar|code-block|syntax|javascript|1798459|第三，运行它，你会得到用法|1798460|java+-cp+"/Applications/Android+Studio.app/Contents/plugins/java-decompiler/lib/java-decompiler.jar"+org.jetbrains.java.decompiler.main.decompiler.ConsoleDecompiler

Usage:+java+-jar+fernflower.jar+[-<option>=<value>]*+[<source>]%2B+<destination>
Example:+java+-jar+fernflower.jar+-dgs=true+c:\my\source\+c:\my.jar+d:\decompiled\|1798461|最后，根据IdeaDecompiler.kt，工作室的反编译器嵌套选项列表如下|1798462|-hdc=0+-dgs=1+-rsy=1+-rbr=1+-lit=1+-nls=1+-mpm=60+-lac=1|1798463|IFernflowerPreferences.HIDE_DEFAULT_CONSTRUCTOR+to+"0",
++++++++IFernflowerPreferences.DECOMPILE_GENERIC_SIGNATURES+to+"1",
++++++++IFernflowerPreferences.REMOVE_SYNTHETIC+to+"1",
++++++++IFernflowerPreferences.REMOVE_BRIDGE+to+"1",
++++++++IFernflowerPreferences.LITERALS_AS_IS+to+"1",
++++++++IFernflowerPreferences.NEW_LINE_SEPARATOR+to+"1",
++++++++**IFernflowerPreferences.BANNER+to+BANNER,**
++++++++IFernflowerPreferences.MAX_PROCESSING_METHOD+to+60,
++++++++**IFernflowerPreferences.INDENT_STRING+to+indent,**
++++++++**IFernflowerPreferences.IGNORE_INVALID_BYTECODE+to+"1",**
++++++++IFernflowerPreferences.VERIFY_ANONYMOUS_CLASSES+to+"1",
+++++++++**IFernflowerPreferences.UNIT_TEST_MODE+to+if+(ApplicationManager.getApplication().isUnitTestMode)+"1"+else+"0")**|1798464|我找不到星号项目的sutialbe选项。|1798465|希望这些步骤能让问题变得清晰。|1798466|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/efee4cc1022632a27b51a6f276563d0a.png|imageAlt^0|0|0|0|1|0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1D|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1E|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|1F|8|@]|9|@$G|1G|H|1H|1|1I]]|A|$]]|$1|I|3|C|5|6|7|1J|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|1K|8|@]|9|@]|A|$]]|$1|L|3|M|5|N|7|1L|8|@]|9|@]|A|$O|P]]|$1|Q|3|R|5|6|7|1M|8|@]|9|@]|A|$]]|$1|S|3|T|5|N|7|1N|8|@]|9|@]|A|$O|P]]|$1|U|3|V|5|6|7|1O|8|@]|9|@]|A|$]]|$1|W|3|X|5|6|7|1P|8|@]|9|@]|A|$]]|$1|Y|3|Z|5|N|7|1Q|8|@]|9|@]|A|$O|P]]|$1|10|3|11|5|6|7|1R|8|@]|9|@]|A|$]]|$1|12|3|13|5|6|7|1S|8|@]|9|@]|A|$]]|$1|14|3|-4|5|6|7|1T|8|@]|9|@]|A|$]]]|15|$16|$5|17|18|19|A|$1A|1B|1C|-4]]]]

Someone had gave good answers. I made another instruction clue step by step.
First, open your studio and search. You can find the decompier is Fernflower.

<a href="https://i.stack.imgur.com/4xsaP.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/4xsaP.png" alt="enter image description here"></a>

Second, we can find it in the plugins directory.

<pre><code>/Applications/Android Studio.app/Contents/plugins/java-decompiler/lib/java-decompiler.jar
</code></pre>

Third, run it, you will get the usage

<pre><code>java -cp "/Applications/Android Studio.app/Contents/plugins/java-decompiler/lib/java-decompiler.jar" org.jetbrains.java.decompiler.main.decompiler.ConsoleDecompiler

Usage: java -jar fernflower.jar [-&lt;option&gt;=&lt;value&gt;]* [&lt;source&gt;]+ &lt;destination&gt;
Example: java -jar fernflower.jar -dgs=true c:\my\source\ c:\my.jar d:\decompiled\
</code></pre>

Finally, The studio's nest options for decompiler list as follows according IdeaDecompiler.kt

-hdc=0 -dgs=1 -rsy=1 -rbr=1 -lit=1 -nls=1 -mpm=60 -lac=1

<pre><code>IFernflowerPreferences.HIDE_DEFAULT_CONSTRUCTOR to "0",
 IFernflowerPreferences.DECOMPILE_GENERIC_SIGNATURES to "1",
 IFernflowerPreferences.REMOVE_SYNTHETIC to "1",
 IFernflowerPreferences.REMOVE_BRIDGE to "1",
 IFernflowerPreferences.LITERALS_AS_IS to "1",
 IFernflowerPreferences.NEW_LINE_SEPARATOR to "1",
 **IFernflowerPreferences.BANNER to BANNER,**
 IFernflowerPreferences.MAX_PROCESSING_METHOD to 60,
 **IFernflowerPreferences.INDENT_STRING to indent,**
 **IFernflowerPreferences.IGNORE_INVALID_BYTECODE to "1",**
 IFernflowerPreferences.VERIFY_ANONYMOUS_CLASSES to "1",
 **IFernflowerPreferences.UNIT_TEST_MODE to if (ApplicationManager.getApplication().isUnitTestMode) "1" else "0")**
</code></pre>

I cant find the sutialbe option for the asterisk items.

Hope these steps will make the question clear.

IDEA has a great built-in feature - decompiler. It works great.I can copy source code, but I cannot find option to extract all decompiled java classes to java files. 
This project has a lot of java classes and packages, so I will be to long to copy this manually. 
Does anyone know how to extract to java source files.
 Thx

How to decompile to java files intellij idea

Android Studio

IntelliJ IDEA

编译器

Android

Eclipse

Java

IDEA有一个很棒的内置功能--反编译器。它工作得很好。我可以复制源代码，但我找不到将所有反编译的java类提取到java文件的选项。这个项目有很多java类和包，所以我将很长时间手动复制。有谁知道如何解压到java源文件。Thx

问如何反编译成java文件intellij idea
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