Java 如何反编译整个Jar文件？
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How to decompile a whole Jar file?
提问by StoneHeart
Does anyone know of a free decompiler that can decompile an entire Jar file instead of a single class? I have a problem with sub classes like name$1.class name$2.class name.class
有谁知道可以反编译整个 Jar 文件而不是单个类的免费反编译器？我有像 name$1.class name$2.class name.class 这样的子类的问题
采纳答案by VonC
2009: JavaDecompilercan do a good job with a jar: since 0.2.5, All files, in JAR files, are displayed.
2009 年：JavaDecompiler可以很好地使用 jar：从 0.2.5 开始，显示 JAR 文件中的所有文件。
See also the question "How do I “decompile” Java class files?".
另请参阅问题“如何“反编译”Java 类文件？.
The JD-Eclipse doesn't seem to have changed since late 2009 though (see Changes).
So its integration with latest Eclipse (3.8, 4.2+) might be problematic.
不过，JD-Eclipse 自 2009 年末以来似乎没有改变（请参阅Changes）。
因此，它与最新的 Eclipse（3.8、4.2+）的集成可能会出现问题。
JD-Core is actively maintained.
JD-Core 正在积极维护。
Both are the result of the fantastic work of (SO user) Emmanuel Dupuy.
两者都是（SO 用户）Emmanuel Dupuy出色工作的结果。
2018: A more modern option, mentioned in the commentsby David Kennedy Araujo:
2018：一个更现代的选项，提到在评论由大卫·肯尼迪阿劳霍：
JetBrains/intellij-community/plugins/java-decompiler/engine
JetBrains/intellij-community/plugins/java-decompiler/engine
Fernflower is the first actually working analytical decompiler for Java and probably for a high-level programming language in general.
java -jar fernflower.jar [-<option>=<value>]* [<source>]+ <destination> java -jar fernflower.jar -hes=0 -hdc=0 c:\Temp\binary\ -e=c:\Java\rt.jar c:\Temp\source\
Fernflower 是第一个实际工作的 Java 分析反编译器，一般来说可能是一种高级编程语言。
java -jar fernflower.jar [-<option>=<value>]* [<source>]+ <destination> java -jar fernflower.jar -hes=0 -hdc=0 c:\Temp\binary\ -e=c:\Java\rt.jar c:\Temp\source\
See also How to decompile to java files intellij ideafor a command working with recent IntelliJ IDEA.
另请参阅如何反编译为 java 文件 intellij idea用于使用最近的 IntelliJ IDEA 的命令。
回答by yanchenko
You extract it and then use jad against the dir.
您提取它，然后对目录使用 jad。
回答by Cadoo
A jar file is just a zip file with jar extension. You should be able to unzip(winzip) a jar just like a zip file.
jar 文件只是一个带有 jar 扩展名的 zip 文件。您应该能够像 zip 文件一样解压缩 (winzip) jar。
回答by Chris R
If you happen to have both a bash shell and jad:
如果您碰巧同时拥有 bash shell 和 jad：
JAR=(your jar file name)
unzip -d $JAR.tmp $JAR
pushd $JAR.tmp
for f in `find . -name '*.class'`; do
jad -d $(dirname $f) -s java -lnc $f
done
popd
I might be a tiny, tiny bit off with that, but it should work more or less as advertised. You should end up with $JAR.tmpcontaining your decompiled files.
我可能对此有点不以为然，但它应该或多或少像宣传的那样工作。你应该最终$JAR.tmp包含你的反编译文件。
回答by Yuval Adam
First of all, it's worth remembering that all Java archive files (.jar/.war/etc...) are all basically just fancy.zipfiles, with a few added manifests and metadata.
首先，值得记住的是，所有 Java 存档文件 ( .jar/ .war/etc...)基本上都只是花哨的.zip文件，添加了一些清单和元数据。
Second, to tackle this problem I personally use several tools which handle this problem on all levels:
其次，为了解决这个问题，我个人使用了几个工具来处理各个层面的问题：
- Jad+ Jadclipsewhile working in IDE for decompiling
.classfiles - WinRAR, my favorite compression tool natively supports Java archives (again, see first paragraph).
- Beyond Compare, my favorite diff tool, when configured correctly can do on-the-fly comparisons between any archive file, including
jars. Well worth a try.
- Jad+Jadclipse在 IDE 中工作以反编译
.class文件 - WinRAR，我最喜欢的压缩工具本身就支持 Java 档案（再次参见第一段）。
- Beyond Compare是我最喜欢的 diff 工具，如果配置正确，可以在任何存档文件之间进行即时比较，包括
jars。非常值得一试。
The advantage of all the aforementioned, is that I do not need to hold any other external tool which clutters my work environment. Everything I will ever need from one of those files can be handled inside my IDE or diffed with other files natively.
上述所有内容的优点是，我不需要持有任何其他使我的工作环境变得混乱的外部工具。我从这些文件之一中需要的所有内容都可以在我的 IDE 中处理，也可以与其他文件本地进行比较。
回答by Joel S
Note: This solution only works for Mac and *nix users.
注意：此解决方案仅适用于 Mac 和 *nix 用户。
I also tried to find Jad with no luck. My quick solution was to download MacJadthat contains jad. Once you downloaded it you can find jad in [where-you-downloaded-macjad]/MacJAD/Contents/Resources/jad.
我也试图找到杰德，但没有运气。我的快速解决方案是下载包含 jad 的MacJad。下载后，您可以在 [where-you-downloaded-macjad]/MacJAD/Contents/Resources/jad 中找到 jad。
回答by Adam Paynter
I have had reasonable success with a tool named (frustratingly) "JD: Java Decompiler".
我使用名为（令人沮丧的）“ JD：Java Decompiler”的工具取得了合理的成功。
I have found it better than most decompilers when dealing with classes compiled for Java 5 and higher. Unfortunately, it can still have some hiccups where JAD would normally succeed.
在处理为 Java 5 及更高版本编译的类时，我发现它比大多数反编译器更好。不幸的是，它仍然可能会出现一些问题，而 JAD 通常会成功。
回答by cybertoast
Something like:
就像是：
jar -xf foo.jar && find . -iname "*.class" | xargs /opt/local/bin/jad -r
maybe?
也许？
回答by merzod
Insert the following into decompile.jar.sh
在 decompile.jar.sh 中插入以下内容
# Usage: decompile.jar.sh some.jar [-d]
# clean target folders
function clean_target {
rm -rf $unjar $src $jad_log
}
# clean all debug stuff
function clean_stuff {
rm -rf $unjar $jad_log
}
# the main function
function work {
jar=
unjar=`basename $jar.unjar`
src=`basename $jar.src`
jad_log=jad.log
clean_target
unzip -q $jar -d $unjar
jad -d $src -ff -r -lnc -o -s java $unjar/**/*.class > $jad_log 2>&1
if [ ! $debug ]; then
clean_stuff
fi
if [ -d $src ]
then
echo "$jar has been decompiled to $src"
else
echo "Got some problems check output or run in debug mode"
fi
}
function usage {
echo "This script extract and decompile JAR file"
echo "Usage: ##代码## some.jar [-d]"
echo " where: some.jar is the target to decompile"
echo " use -d for debug mode"
}
# check params
if [ -n "" ]
then
if [ "" == "-d" ]; then
debug=true
set -x
fi
work
else
usage
fi
- chmod +x decomplie.jar.sh //executable
- ln -s ./decomplie.jar.s /usr/bin/dj
- chmod +x decomplie.jar.sh //可执行
- ln -s ./decomplie.jar.s /usr/bin/dj
Ready to use, just type dj your.jarand you will get your.jar.srcfolder with sources. Use -doption for debug mode.
准备使用，只需键入dj your.jar，您将获得your.jar.src包含源的文件夹。使用-d调试模式选项。
