用Map中一个Value将List＜Map＞进行分组成List＜对象＞（根据对象的属性去重）或者List＜Map＞（List＜Map＞根据Value去重）
可以用stream流进行处理，下面这个自己写的有用就参考一下
一、分组成List<对象>
先建一个实体类作为分组后的每一个对象
package com.njusc.core.api.dto;
import java.util.List;
import java.util.Map;
/**
*
*/
public class PingzDc {
private String pcId;
private List然后进行分组（我是根据组织名称进行分组的deptName）
List结果：
[PingzDc {
pcId = '1',
list = [{
buildFrom = 11,
zhaiy = 村集体组织zcy001,
money_j = 22.00,
onlyKmName = 银行存款,
jzState = 0,
pzCx = null,
money_d = ,
userName = 张女士,
pzCxId = null,
pzDate = 2023 - 01 - 31,
pzId = 1
}, {
buildFrom = 11,
zhaiy = 村集体组织zcy001,
money_j = ,
onlyKmName = 银行存款,
jzState = 0,
pzCx = null,
money_d = 11.00,
userName = 张女士,
pzCxId = null,
pzDate = 2023 - 01 - 31,
pzId = 1
}]
},
PingzDc {
pcId = '2',
list = [{
buildFrom = 11,
zhaiy = 收入zcy001,
money_j = 100.00,
onlyKmName = 现金,
jzState = 0,
pzCx = null,
money_d = ,
userName = 张女士,
pzCxId = null,
pzDate = 2023 - 01 - 31,
pzId = 2
}, {
buildFrom = 11,
zhaiy = 收入zcy001,
money_j = ,
onlyKmName = 现金,
jzState = 0,
pzCx = null,
money_d = 100.00,
userName = 张女士,
pzCxId = null,
pzDate = 2023 - 01 - 31,
pzId = 2
}]
},
PingzDc {
pcId = '3',
list = [{
buildFrom = 11,
zhaiy = 支出倒叙,
money_j = 100.00,
onlyKmName = 银行存款,
jzState = 0,
pzCx = null,
money_d = ,
use
......二、分组成List
List结果：
[{
"pzId": "1",
"list": [{
"buildFrom": 11,
"zhaiy": "村集体组织zcy001",
"money_j": "22.00",
"onlyKmName": "银行存款",
"jzState": 0,
"money_d": "",
"userName": "张女士",
"pzDate": "2023-01-31",
"pzId": "1"
}, {
"buildFrom": 11,
"zhaiy": "村集体组织zcy001",
"money_j": "",
"onlyKmName": "银行存款",
"jzState": 0,
"money_d": "11.00",
"userName": "张女士",
"pzDate": "2023-01-31",
"pzId": "1"
}]
}, {
"pzId": "2",
"list": [{
"buildFrom": 11,
"zhaiy": "收入zcy001",
"money_j": "100.00",
"onlyKmName": "现金",
"jzState": 0,
"money_d": "",
"userName": "张女士",
"pzDate": "2023-01-31",
"pzId": "2"
}, {
"buildFrom": 11,
"zhaiy": "收入zcy001",
"money_j": "",
"onlyKmName": "现金",
"jzState": 0,
"money_d": "100.00",
"userName": "张女士",
"pzDate": "2023-01-31",
"pzId": "2"
}]
}, {
"pzId": "3",
"list": [{
"buildFrom": 11,
"zhaiy": "支出倒叙",
"money_j": "100.00",
"onlyKmName": "银行存款",
"jzState": 0,
"money_d": "",
"userName": "张女士",
"pzDate": "2023-01-31",
"pzId": "3"
.......