추가정보를 전송하기 위한 hateoas 적용

restful-web-service/pom.xml

@@ -31,7 +31,10 @@
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-validation</artifactId>
 		</dependency>
-
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-hateoas</artifactId>
+		</dependency>
 
 		<dependency>
 			<groupId>org.springframework.boot</groupId>

restful-web-service/src/main/java/com/example/restfulwebservice/user/User.java

@@ -14,7 +14,7 @@ import java.util.Date;
 @Data
 @AllArgsConstructor
 @NoArgsConstructor
-@JsonFilter("UserInfo")
+//@JsonFilter("UserInfo")
 public class User {
     private Integer id;
     @Size(min = 2, message = "Name은 2글자 이상 입력해 주세요.")

restful-web-service/src/main/java/com/example/restfulwebservice/user/UserController.java

@@ -2,6 +2,8 @@ package com.example.restfulwebservice.user;
 
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.MessageSource;
+import org.springframework.hateoas.EntityModel;
+import org.springframework.hateoas.server.mvc.WebMvcLinkBuilder;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
 import org.springframework.web.servlet.support.ServletUriComponentsBuilder;
@@ -11,6 +13,9 @@ import java.net.URI;
 import java.util.List;
 import java.util.Locale;
 
+import static org.springframework.hateoas.server.mvc.WebMvcLinkBuilder.linkTo;
+import static org.springframework.hateoas.server.mvc.WebMvcLinkBuilder.methodOn;
+
 @RestController
 public class UserController {
     private final UserDaoService userDaoService;
@@ -27,14 +32,18 @@ public class UserController {
     }
 
     @GetMapping("/users/{id}")
-    public User retrieveUser(@PathVariable int id) {
+    public EntityModel<User> retrieveUser(@PathVariable int id) {
         User user = userDaoService.findOne(id);
 
         if (user == null) {
             throw new UserNotFoundException(String.format("ID[%s] not found", id));
         }
 
-        return user;
+        EntityModel<User> entityModel = new EntityModel<>(user);
+        WebMvcLinkBuilder linkTo = linkTo(methodOn(this.getClass()).retrieveAllUsers());
+        entityModel.add(linkTo.withRel("all-users"));
+
+        return entityModel;
     }
 
     @PostMapping("/users")