JAVA给一个JSON数组添加对象

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

String a = "[{\"name\": \"张三\", \"age\": 10, \"gender\": \"男\", \"email\": \"123@qq.com\"}]";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","456@qq.com");JSONObject jsonObject2 = new JSONObject();jsonObject2.put("name","王五");jsonObject2.put("age",24);jsonObject2.put("gender","男");jsonObject2.put("email","789@qq.com");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

[{"name": "张三", "age": 10, "gender": "男", "email": "123@qq.com"}]
objects:[{"gender":"男","name":"张三","age":10,"email":"123@qq.com"},{"gender":"女","name":"李四","age":24,"email":"456@qq.com"},{"gender":"男","name":"王五","age":24,"email":"789@qq.com"}]
jsonStr:[{"gender":"男","name":"张三","age":10,"email":"123@qq.com"},{"gender":"女","name":"李四","age":24,"email":"456@qq.com"},{"gender":"男","name":"王五","age":24,"email":"789@qq.com"}]