map转listmap

package com;

import java.util.*;
import java.util.stream.Collectors;


public class LambadaTest {

    public static void main(String[] args) {
       /* Map<String,List<Map>> map = new HashMap<>();
//        List<Map<String,String >> strings = new ArrayList<>();

        for (int i = 0; i < 6; i++) {
            if (i<4) {
                List<Map> list = map.get("1");
                if (list==null) {
                    list = new ArrayList<>();
                }
                HashMap<String ,String> map1 = new HashMap<>();
                map1.put("busicodes",i+"");
                list.add(map1);
                map.put("1",list);
            }else {
                List<Map> list = map.get("2");
                if (list==null) {
                    list = new ArrayList<>();
                }
                HashMap<String ,String> map1 = new HashMap<>();
                map1.put("busicodes",i+"");
                list.add(map1);
                map.put("2",list);
            }
        }

        System.out.println(map);*/

       b();


    }

    public static void a(){

        /*Map<String,List<Map>> map = new HashMap<>();

        List<Map> maps = map.get(taskType);
        if (maps==null) {
            maps = new ArrayList<>();
        }
        HashMap<Object, Object> map1 = new HashMap<>();
        map1.put("busiCodes",relienceValue);
        maps.add(map1);

        Set<Map.Entry<String, List<Map>>> entries = map.entrySet();
        for (Map.Entry<String, List<Map>> entry : entries) {
            String key = entry.getKey();
            object.setTaskType(key);
            object.setBusiCodes(entry.getValue());
            noticeBpbc();
        }*/
    }

    public static void b(){
        Map<String,List<Map>> map = new HashMap<>();

        List<Stu> stus = Arrays.asList(new Stu("0", "02"), new Stu("0", "04"), new Stu("1", "07"));
        for (Stu stu : stus) {
            List<Map> maps = map.get(stu.taskType);
            if (maps==null) {
                maps = new ArrayList<>();
            }
            map.put(stu.taskType,maps);

            HashMap<Object, Object> busiCodesMap = new HashMap<>();
            busiCodesMap.put("busiCodes",stu.relienceValue);
            maps.add(busiCodesMap);
        }

        System.out.println("map:"+map);

        A obj = new A();
        Set<Map.Entry<String, List<Map>>> entries = map.entrySet();
        for (Map.Entry<String, List<Map>> entry : entries) {
            String key = entry.getKey();
            obj.setTaskType(key);
            obj.setBusiCodes(entry.getValue());
            System.out.println("obj:"+obj);
        }

    }
}

标签：map,HashMap,list,listmap,maps,map1,new
来源： https://www.cnblogs.com/gendway/p/15022559.html