indexOf的使用

Strings = " [clientname:wangzhen][method:abcd] " ;
Stringnews = s.substring(s.indexOf( " method " ) + " method: " .length(),s.indexOf( " ] " ,s.indexOf( " method " )));
System.out.println(s);

输出： abcd

此处使用了public int indexOf(String str, int fromIndex)