Java中JSONArray转换List的方法

柔情只为你懂 2024-03-22 15:45 45阅读 0赞

JSONArray字符串 转 List

//初始化JSONArray
    JSONArray array=new JSONArray();
    array.add(0,"a");
    array.add(1,"b");
    array.add(2,"c");
     
    List<String> list = JSONObject.parseArray(array.toJSONString(),String.class);
     
    System.out.println(list.toString());

> 输出结果：  
> \[a, b, c\]

JSONArray对象 转 List实体类对象

//初始化JSONArray
    JSONArray jsonArray = JSONArray.parseArray("[{\"name\":\"zhangsan\",\"age\":18},{\"name\":\"lisi\",\"age\":23}]");
    //打印jsonArray
    System.out.println(jsonArray.toJSONString());
    //转List
    List<Body> list = JSONArray.parseArray(jsonArray.toJSONString(), Body.class);
    //打印List<Body>
    System.out.println(list.toString());

Body.class代码：

static class Body implements Serializable {
        
            private static final long serialVersionUID = 1L;
            private String name;
            private int age;
            public String getName() {
        
                return name;
            }
            public void setName(String name) {
        
                this.name = name;
            }
            public int getAge() {
        
                return age;
            }
            public void setAge(int age) {
        
                this.age = age;
            }
            @Override
            public String toString() {
        
                return "Body{" +
                        "name='" + name + '\'' +
                        ", age=" + age +
                        '}';
            }
    }

> 输出结果：  
> \[\{“name”:“zhangsan”,“age”:18\},\{“name”:“lisi”,“age”:23\}\]  
> \[Body\{name=‘zhangsan’, age=18\}, Body\{name=‘lisi’, age=23\}\]

List转JSONArray

List<T> list = new ArrayList<T>();
    JSONArray jsonArray = JSONArray.parseArray(JSON.toJSONString(list));