提取json字符串中指定格式中的参数值

直接上代码：

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

public class TestDemo {
    public static void main(String[] args) {

        ArrayList json = new ArrayList();
        json.add("111");
        json.add("222");
        json.add("333");
        User user = new User();
        user.setJson(json);
        user.setCode("200");
        user.setMessage("true");
        String string = "(" + JSON.toJSONString(user) + ")";
        System.out.println(string);
        // 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 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:"25,178,750.00"," +
                "OP_DATE:"2013-06-07",DUE_DATE:"2013-12-07",ROWNUM_:1,idx:0},{CSTM_NO:"11118"," +
                "CSTM_NAME:"广东XX电力有限公司",FIX_GNL:"111810158",FIX_ACC:"D201306070002",OP_FLAG:"正常"," +
                "BUSS_KIND_NAME:"三个月定期存款",BAL:"25,178,750.00",AVAL_BAL:"25,178,750.00",OP_DATE:"2013-06-07"," +
                "DUE_DATE:"2013-12-07",ROWNUM_:3,idx:2},{CSTM_NO:"11118",CSTM_NAME:"广东XX电力有限公司"," +
                "FIX_GNL:"111810158",FIX_ACC:"D201306070005",OP_FLAG:"正常",BUSS_KIND_NAME:"三个月定期存款"," +
                "BAL:"25,178,750.00",AVAL_BAL:"25,178,750.00",OP_DATE:"2013-06-07",DUE_DATE:"2013-12-07"," +
                "ROWNUM_:4,idx:3}]";
        String regex = "FIX_ACC:(.*?),OP_FLAG";//别忘了使用非贪婪模式！
        Matcher matcher1 = Pattern.compile(regex).matcher(parse);
        while (matcher1.find()) {
            String ret = matcher1.group(1);
            System.out.println(ret);
        }


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

        Pattern pattern1 = Pattern.compile("\[(.*?)\]");

        Matcher matcher2 = pattern1.matcher(str);

        while(matcher2.find()){

            System.out.println(matcher2.group(1));
        }
    }
}

打印结果如下：

({"code":"200","json":["111","222","333"],"message":"true"})
111","222","333
"D201306070003"
"D201306070002"
"D201306070005"
001
002

Process finished with exit code 0