JAD 的使用

JAD 的使用
================
1.
安装

http://www.varaneckas.com/sites/default/files/jad/jad158g.win.zip

2.
使用

E:\bisoft\ex\jad>jad
Jad v1.5.8g. Copyright 2001 Pavel Kouznetsov ([e-mail]).
Usage:    jad [option(s)] <filename(s)>
Options: -a       - 生成JVM指令作为注释
         -af      - output fully qualified names when annotating
         -b       - 产生多余的括号, 如if(a){ f(); }
         -clear   - clear all prefixes, including the default ones
         -d <dir> - 输出文件的目录
         -dead    - 尝试反编译DEAD代码
         -dis     - 反汇编方法的字节码(JVM指令)
         -f       - 生成完全限定名
         -ff      - 方法之前输出字段
         -i       - 字段输出默认初始化值
         -l<num>  - split strings into pieces of max <num> chars (splitstr)
         -lnc     - 输出行号
         -lradix<num>- display long integers using the specified radix
         -nl      - split strings on newline characters (splitstr)
         -noconv  - don't convert Java identifiers into valid ones (noconv)
         -nocast  - don't generate auxiliary casts
         -noclass - don't convert .class operators
         -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
         -nofd    - don't disambiguate fields with the same names (nofldis)
         -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       - 不需要确认直接覆盖生成的文件
         -p       - send all output to STDOUT (for piping)
         -pa <pfx>- prefix for all packages in generated source files
         -pc <pfx>- prefix for classes with numerical names (default: _cls)
         -pe <pfx>- prefix for unused exception names (default: _ex)
         -pf <pfx>- prefix for fields with numerical names (default: _fld)
         -pi<num> - pack imports into one line using .* (packimports)
         -pl <pfx>- prefix for locals with numerical names (default: _lcl)
         -pm <pfx>- prefix for methods with numerical names (default: _mth)
         -pp <pfx>- prefix for method parms with numerical names (default:_prm)
         -pv<num> - pack fields with the same types into one line (packfields)
         -r       - 保持输出目录为类的包目录结构
         -radix<num>- display integers using the specified radix (8, 10, or 16)
         -s <ext> - 输出文件扩展名 (默认: .jad)
         -safe    - generate additional casts to disambiguate methods/fields
         -space   - 语句或表达式输出空格

         -stat    - show the total number of processed classes/methods/fields
         -t<num>  - use <num> spaces for indentation (default: 4)
         -t       - use tabs instead of spaces for indentation
         -v       - show method names while decompiling
         -8       - convert Unicode strings into ANSI strings (ansi)
         -&       - redirect STDERR to STDOUT

E:\bisoft\ex\jad>

3
示例:

反编译类 HelloWorld.class:

3.1

jad HelloWorld.class

会在当前目录生成 HelloWorld.jad.

如果你想修改生成文件的扩展名为.java, 这样:

jad -s java HelloWorld.class

如果生成的类名字不正确, 一般是嵌套类时, 可以显示指定:

jad -p HelloWorld.class > HelloWorld2.java

指定输出目录:

jad -d build -s java *.class

3.2
反编译整个目录树:

jad -o -r -sjava -d ./build **/*.class

3.3
输出jvm指令:

jad -a -o -r -sjvm -d ./build **/*.class

3.4
参数启用与禁用:
-o     原来为OFF, 则现在反转为ON
-o+    ON或True
-o-    OFF或False

3.5
设置默认值:
环境变量:
JAD_OPTIONS=-ff+ -nonlb+ -t+ -space+