json字符串反序列化成实体类，新手求解

现在有json字符串
{
“header”:{
“state”:”success”,
“count”:”视频个数”
},
“body”:[“http://10.10.10.10/123.mp4”,”http://10.10.10.10/234.mp4”]
}

怎么建实体类，并且反序列化

这个不是很简单么？

第一个实体：
@Data
public class ResponseDemo implements Serializable {

private static final long serialVersionUID = -6864708554168505352L;

private ResponseHeaderDemo header;

private List<String> body;

}

第二个实体

@Data
public class ResponseHeaderDemo implements Serializable {

private static final long serialVersionUID = -1838521376200675071L;
private boolean state;

private String count;


public ResponseHeaderDemo() {
}

public ResponseHeaderDemo(boolean state, String count) {
    this.state = state;
    this.count = count;
}

}

测试类：

public class TestObjSerializeAndDeserialize {

public static void main(String[] args) throws Exception {
    //序列化Person对象
    SerializeResponseDemo();

    //反序列Perons对象
    ResponseDemo responseDemo = DeserializePerson();
    System.out.println("解析出来的对象" + new ObjectMapper().writeValueAsString(responseDemo));
}

/**
 * MethodName: SerializePerson
 * Description: 序列化Person对象
 * @author xudp
 * @throws FileNotFoundException
 * @throws IOException
 */
private static void SerializeResponseDemo() {
    ObjectOutputStream oo = null;
    try {
        ResponseDemo responseDemo = new ResponseDemo();
        responseDemo.setBody(Arrays.asList("http://10.10.10.10/123.mp4", "http://10.10.10.10/123.mp4"));
        responseDemo.setHeader(new ResponseHeaderDemo(false, "视频个数"));
        // ObjectOutputStream 对象输出流，将ResponseDemo对象存储到E盘的ResponseDemo.txt文件中，完成对Person对象的序列化操作
        oo = new ObjectOutputStream(new FileOutputStream(new File("E:/ResponseDemo.txt")));
        oo.writeObject(responseDemo);
        System.out.println("ResponseDemo对象序列化成功！");

    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        try {
            oo.close();
        } catch (IOException e) {
            System.out.println("关闭对象失败！");
            e.printStackTrace();
        }
    }
}

/**
 * MethodName: DeserializePerson
 * Description: 反序列Perons对象
 * @author xudp
 * @return
 * @throws Exception
 * @throws IOException
 */
private static ResponseDemo DeserializePerson() throws Exception, IOException {
    ObjectInputStream ois = new ObjectInputStream(new FileInputStream(
            new File("E:/ResponseDemo.txt")));
    ResponseDemo person = (ResponseDemo) ois.readObject();
    System.out.println("ResponseDemo对象反序列化成功！");
    return person;
}

}

啥语言啊？？？！！！

下面是java fastJson

https://www.cnblogs.com/cdf-opensource-007/p/7106018.html

如果不一定要一个实体类，就先用一个map接收，也可以取出数据啊