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package com.ztrs.ioms.utils;import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.function.Function;
import java.util.stream.Collectors;public class Main {public static void main(String[] args) {List<Map<String, Object>> list = new ArrayList<>();Map<String, Object> map1 = new HashMap<>();map1.put("id", "1");map1.put("name", "Alice");Map<String, Object> map2 = new HashMap<>();map2.put("id", "1"); // 与map1的id相同，视为重复map2.put("name", "Bob");Map<String, Object> map3 = new HashMap<>();map3.put("id", "2");map3.put("name", "Charlie");list.add(map1);list.add(map2);list.add(map3);List<Map<String, Object>> uniqueList = list.stream().collect(Collectors.toMap(map -> (String) map.get("id"),Function.identity(),(existing, replacement) -> replacement)).values().stream().collect(Collectors.toList());// 打印结果uniqueList.forEach(System.out::println);}
}

返回结果：

{name=Bob, id=1}
{name=Charlie, id=2}