jad 反编译

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今天安装jad和jadclipse 反编译.class 文件，方便查看线上的jar包源码

一：安装jadclipse （提供了运行jad的接口页面）

A：下载 http://jadclipse.sourceforge.net/

B：解压，jar包放在eclipse的puglins文件夹下

C：重启eclipse，可看到如下jadClipse已经出现在导航栏

二：下载jad（可以不装jadclipse，在命令行运行jad，真正的反编译工作是jad来做的）

A：下载 http://varaneckas.com/jad/

B：解压，将jad.exe 放置在某个文件夹下

三：配置jadClipse的jad路径

A: eclipse的windows>preference>java>jadClipse 的path配置刚才jad.exe的绝对路径

B: 查看配置：eclipse的windows>preference>Gerneral>Editors>File Association 中配置.class 文件的关联编辑器

ok，说明.class 文件应该可以被反编译了，双击.class 文件，就可以看到source code啦

四：安装出现的问题

（1）反编译一个文件出现下面结果（jad 版本错误，更新之后成功）：

/*jadclipse*/Jad v1.5.7g. Copyright 2000 Pavel Kouznetsov (kpdus@yahoo.com).
Usage:    jad [option(s)]
Options: -a       - generate JVM instructions as comments (annotate)
         -af      - output fully qualified names when annotating
         -b       - generate redundant braces (braces)
         -clear   - clear all prefixes, including the default ones
         -d
- directory
for output files
         -dead    - try to decompile dead parts of code (if there are any)
         -dis     - disassembler only (disassembler)
         -f       - generate fully qualified names (fullnames)
         -ff      - output fields before methods (fieldsfirst)
         -i       - print default initializers for fields (definits)
         -l  - split strings into pieces of max  chars (splitstr)
         -lnc     - output original line numbers as comments (lnc)
         -nl      - split strings on newline characters (splitstr)
         -noconv  - don't convert Java identifiers into valid ones (noconv)
         -nocast  - don't generate auxiliary casts
         -nocode  - don't generate the source code for methods
         -noctor  - suppress the empty constructors
         -nodos   - turn off check for class files written in DOS mode
         -noinner - turn off the support of inner classes
         -nolvt   - ignore Local Variable Table entries (nolvt)
         -nonlb   - don't insert a newline before opening brace (nonlb)
         -o       - overwrite output files without confirmation
         -p       - send all output to STDOUT (for piping)
         -pa  - prefix for all packages in generated source files
         -pc  - prefix for classes with numerical names (default: _cls)
         -pe  - prefix for unused exception names (default: _ex)
         -pf  - prefix for fields with numerical names (default: _fld)
         -pi - pack imports into one line using .* (packimports)
         -pl  - prefix for locals with numerical names (default: _lcl)
         -pm  - prefix for methods with numerical names (default: _mth)
         -pp  - prefix for method parms with numerical names (default:_prm)
         -pv - pack fields with the same types into one line (packfields)
         -r       - restore package directory structure
         -s  - output file extension (default: .jad)
         -space   - output space between keyword (if, while, etc) and expression
         -stat    - show the total number of processed classes/methods/fields
         -t  - use  spaces for indentation (default: 4)
         -t       - use tabs instead of spaces for indentation
         -v       - show method names while decompiling


/*
DECOMPILATION REPORT

Decompiled from: D:Program FilesMyEclipse 6.0jrelib t.jar
Total time: 141 ms
Jad reported messages/errors:
Exit status: 1
Caught exceptions:
*/

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