Java反编译代码分析（一）

浅析如何读懂这种反编译过来的文件，不喜勿喷。

赋值

Node node;
        Node node1 = _$3.getChildNodes().item(0);
        node1;
        node1;
        JVM INSTR swap ;
        node;
        getChildNodes();
        0;
        item();
        getChildNodes();
        0;
        item();
        getNodeValue();
        String s;
        s;

原始语句：

Node node;
Node node1 = currDocument.getChildNodes().item(0);
node = node1;
String s = node.getChildNodes().item(0).getChildNodes().item(0).getNodeValue();

//赋值语句
// JVM INSTR swap ;

不带参数创建对象

JVM INSTR new # <Class CrossTable>;
        JVM INSTR dup ;
        JVM INSTR swap ;
        CrossTable();
        CrossTable crosstable;
        crosstable;

CrossTable crosstable = new CrossTable();

带参数创建对象

JVM INSTR new # <Class StringBuffer>;
        JVM INSTR dup ;
        JVM INSTR swap ;
        String.valueOf(s2);
        StringBuffer();
        s.substring(j, i);
        append();
        s6;
        append();
        toString();
        s2;

s2 = (new StringBuffer(String.valueOf(s2))).append(s.substring(j, i)).append(s6).toString();
//s2 += s.substring(j, i) + s6;

for循环

int k = ;
goto _L4
_L8:
 ...
 k++;
_L4:
        if(k < as.length) goto _L8; else goto _L7

for(int k=;k < as.length;k++)
 {
     ...
 }

while循环

String s1 = "";
          goto _L1
_L3:
        JVM INSTR new # <Class StringBuffer>;
        JVM INSTR dup ;
        JVM INSTR swap ;
        String.valueOf(s1);
        StringBuffer();
        _$(resultset, s, l);
        append();
        toString();
        s1;
_L1:
        if(resultset.next()) goto _L3; else goto _L2

String s1 = "";
 while(resultset.next())
 {
  s1 = s1 + resultSetToString(resultset, s, l);
 }

我是天王盖地虎的分割线