java使用正则表达式的方法从json串儿，取想要的value值

import java.util.ArrayList;
 java.util.regex.Matcher;
 java.util.regex.Pattern;

public class Snippet {
    static void main(String[] args) {
        ArrayList json = new ArrayList();
        json.add("111");
        User user =  User();
        user.setJson(json);
        user.setCode("200");
        user.setMessage("true");
        String string = "(" + JSON.toJSONString(user) + ")";
        // String regex = ""json":(.*?),"message""; 使用非贪婪模式！
        Pattern pattern = Pattern.compile("["(.*?)"]");
        Matcher matcher = pattern.matcher(string);
        while (matcher.find()) {
            System.out.println(matcher.group(1));
        }
    }
}

String str = "我是[001]真心求救的[002]，你能帮帮我吗";

        Pattern pattern = Pattern.compile("[(.*?)]");

        Matcher matcher = pattern.matcher(str);

        (matcher.find()){

            System.out.println(matcher.group(1));

        }

 main(String[] args) {


String
parse="[{CSTM_NO:"11118",CSTM_NAME:"广东XX电力有限公司",FIX_GNL:"111810158",FIX_ACC:"D201306070003",OP_FLAG:"正常",BUSS_KIND_NAME:"三个月定期存款",BAL:"25,178,750.00",AVAL_BAL:"25,OP_DATE:"2013-06-07",DUE_DATE:"2013-12-07",ROWNUM_:1,idx:0},{CSTM_NO:"11118",FIX_ACC:"D201306070002",ROWNUM_:3,idx:2},FIX_ACC:"D201306070005",ROWNUM_:4,idx:3}]";


String regex="FIX_ACC:(.*?),OP_FLAG";别忘了使用非贪婪模式！


Matcher matcher=Pattern.compile(regex).matcher(parse);


(matcher.find())


{


 String ret=matcher.group(1);


  System.out.println(ret);


}


}