JAVA给一个JSON数组添加对象

梅秃头2024-05-26 9:06

操作Mysql表的json字段，查询json字段的内容，将新增的内容添加到查询的json数组中

java 复制代码

String a = "[{\"name\": \"张三\", \"age\": 10, \"gender\": \"男\", \"email\": \"[email protected]\"}]";
        cn.hutool.json.JSONArray objects = JSONUtil.parseArray(a);
        System.out.println(a);

        JSONObject jsonObject1 = new JSONObject();
        jsonObject1.put("name","李四");
        jsonObject1.put("age",24);
        jsonObject1.put("gender","女");
        jsonObject1.put("email","[email protected]");

        JSONObject jsonObject2 = new JSONObject();
        jsonObject2.put("name","王五");
        jsonObject2.put("age",24);
        jsonObject2.put("gender","男");
        jsonObject2.put("email","[email protected]");

        objects.add(jsonObject1);
        objects.add(jsonObject2);

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

        String jsonStr = JSONUtil.toJsonStr(objects);
        System.out.println("jsonStr:"+jsonStr);

输出结果

java 复制代码

[{"name": "张三", "age": 10, "gender": "男", "email": "[email protected]"}]
objects:[{"gender":"男","name":"张三","age":10,"email":"[email protected]"},{"gender":"女","name":"李四","age":24,"email":"[email protected]"},{"gender":"男","name":"王五","age":24,"email":"[email protected]"}]
jsonStr:[{"gender":"男","name":"张三","age":10,"email":"[email protected]"},{"gender":"女","name":"李四","age":24,"email":"[email protected]"},{"gender":"男","name":"王五","age":24,"email":"[email protected]"}]