JAVA 将上面包体转换成下面

Question

JAVA 将上面包体转换成下面

这个是JSONArray
                        [[
                                {
                                        "Type": 4,
                                        "Name": "ExecID"
                                },
                                {
                                        "Type": 4,
                                        "Name": "TaskID"
                                }
                                
                        ],[
                                {
                                        "Value": "123"
                                },
                                {
                                        "Value": "456"
                                }
                                
                        ],[
                                {
                                        "Value": "789"
                                },
                                {
                                        "Value": "abc"
                                }
                                
                        ]
                        
                        ..............
                        ]
                        变这样这样
                        [
                                {
                                        "ExecID": "123",
                                        "TaskID": "456",
                                },{
                                        "ExecID": "789",
                                        "TaskID": "abc",
                                }
                                .............
                        ]

Answer 1

import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;

public class Test {
    public static void main(String[] args) {
        //jsonArray：要处理的
        String str = "[[{\"Type\": 4,\"Name\": \"ExecID\"},{\"Type\": 4,\"Name\": \"TaskID\"}],[{\"Value\": \"123\"},{\"Value\": \"456\"}],[{\"Value\": \"789\"},{\"Value\": \"abc\"}]]";
        JSONArray jsonArray = JSONArray.parseArray(str);

        //保存转换后的结果
        JSONArray resArray = new JSONArray();

        //把ExecID那些取出来，作为firstArray
        JSONArray firstArray = JSONArray.parseArray(jsonArray.get(0).toString());
        
        //剩下的从下标1开始，逐个取值、赋值
        for (int i = 1; i < jsonArray.size(); i++) {
            //用来存{"TaskID":"456","ExecID":"123"}这种结构
            JSONObject resObj = new JSONObject();
            JSONArray array = JSONArray.parseArray(jsonArray.get(i).toString());
            for (int j = 0; j < array.size(); j++) {
                //获取Name
                JSONObject firstObj = JSONArray.parseObject(firstArray.get(j).toString());
                String Name = firstObj.getString("Name");

                //获取Value
                JSONObject restObj = JSONArray.parseObject(array.get(j).toString());
                String Value = restObj.getString("Value");
                //存到resObj
                resObj.put(Name, Value);
            }
            //存到resArray
            resArray.add(resObj);
        }

        System.out.println(resArray.toString());
    }
}