finduser, createuser api

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

@@ -1,11 +1,19 @@
 package com.example.restfulwebservice.user;
 
 import lombok.RequiredArgsConstructor;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
+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;
 
+import javax.validation.Valid;
+import java.net.URI;
 import java.util.List;
+import java.util.Optional;
+
+import static org.springframework.hateoas.server.mvc.WebMvcLinkBuilder.linkTo;
+import static org.springframework.hateoas.server.mvc.WebMvcLinkBuilder.methodOn;
 
 @RestController
 @RequiredArgsConstructor
@@ -17,4 +25,35 @@ public class UserJpaController {
     public List<User> retrieveAllUsers() {
         return userRepository.findAll();
     }
+
+    @GetMapping("/users/{id}")
+    public EntityModel<User> retrieveUser(@PathVariable int id) {
+        Optional<User> user = userRepository.findById(id);
+        if(user.isEmpty()){
+            throw new UserNotFoundException(String.format("ID[%s] not found", id));
+        }
+        EntityModel<User> entityModel = new EntityModel<>(user.get());
+        WebMvcLinkBuilder linkTo = linkTo(methodOn(this.getClass()).retrieveAllUsers());
+        entityModel.add(linkTo.withRel("all-users"));
+
+        return entityModel;
+    }
+
+    @DeleteMapping("/users/{id}")
+    public void deleteUser(@PathVariable int id) {
+        userRepository.deleteById(id);
+    }
+
+    @PostMapping("/users")
+    public ResponseEntity<User> createUser(@Valid @RequestBody User user) {
+        System.out.println(user);
+        User savedUser = userRepository.save(user);
+
+        URI location = ServletUriComponentsBuilder.fromCurrentRequest()
+                .path("/{id}")
+                .buildAndExpand(savedUser.getId())
+                .toUri();
+
+        return ResponseEntity.created(location).build();
+    }
 }

restful-web-service/src/main/resources/data.sql

@@ -1,3 +1,3 @@
-insert into user values(1, sysdate(), 'user1', 'test1', '700101-1111111');
-insert into user values(2, sysdate(), 'user2', 'test2', '800101-1231234');
-insert into user values(3, sysdate(), 'user3', 'test3', '900101-1121123');
+insert into user values(100000, sysdate(), 'user1', 'test1', '700101-1111111');
+insert into user values(100001, sysdate(), 'user2', 'test2', '800101-1231234');
+insert into user values(100002, sysdate(), 'user3', 'test3', '900101-1121123');