从.readEntity获取对象

public class User {
    private String name;
    private int age;

    // Getter and Setter methods
    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; }
}

<!-- Jackson -->
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.12.3</version>
</dependency>

import javax.ws.rs.client.Client;
import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.client.WebTarget;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;

public class RestClient {
    public static void main(String[] args) {
        Client client = ClientBuilder.newClient();
        WebTarget target = client.target("http://example.com/api/user/1");

        Response response = target.request(MediaType.APPLICATION_JSON).get();
        if (response.getStatus() == Response.Status.OK.getStatusCode()) {
            User user = response.readEntity(User.class);
            System.out.println("User name: " + user.getName());
            System.out.println("User age: " + user.getAge());
        } else {
            System.out.println("Failed to get user, HTTP error code : " + response.getStatus());
        }
        response.close();
        client.close();
    }
}