Java stream filter过滤List

public static void main(String[] args) {
        List<Map<String, String>> list = new ArrayList<Map<String, String>>();

        Map map1 = new HashMap();
        map1.put("key1", "value1");
        list.add(map1);

        Map map2 = new HashMap();
        map2.put("key2", "value2");
        list.add(map2);

        Map map3 = new HashMap();
        map3.put("key3", "value3");
        list.add(map3);

        System.out.println(list);

        list = list.stream().filter(s->!StringUtils.equals(s.get("key2"),"value2")).collect(Collectors.toList());

        System.out.println(list);
    }

输出：

[{key1=value1}, {key2=value2}, {key3=value3}]
[{key1=value1}, {key3=value3}]