Understand ArgumentResolver

src/main/java/demo/api/config/SecurityConfig.java

@@ -39,7 +39,7 @@ public class SecurityConfig extends WebSecurityConfigurerAdapter {
   protected void configure(HttpSecurity http) throws Exception {
     http
         .csrf().disable()
-        .formLogin().disable()
+        .formLogin().disable()//loginPage("/user/signIn")
         .authorizeRequests()
         .antMatchers("/", "/user/signUp").permitAll()
         .anyRequest().authenticated();

src/main/java/demo/api/user/UserController.java

@@ -4,7 +4,6 @@ import demo.api.user.domain.User;
 import demo.api.user.dtos.UserSignUpRequest;
 import lombok.RequiredArgsConstructor;
 import org.springframework.validation.annotation.Validated;
-import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.ModelAttribute;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
@@ -20,7 +19,7 @@ public class UserController {
   private final UserService userService;
 
   @PostMapping("/signUp")
-  public User signUp(@ModelAttribute @Validated UserSignUpRequest signUpReq) throws Exception {
+  public User signUp(@Validated UserSignUpRequest signUpReq) throws Exception {
     return userService.signUp(signUpReq);
   }
 }

src/main/java/demo/api/user/UserService.java

@@ -33,12 +33,4 @@ public interface UserService {
    * @return 수정된 User
    */
   User updateUser(User user, String newInfo);
-
-//  /**
-//   * 이메일 중복 여부를 확인
-//   *
-//   * @param email
-//   * @return true | false
-//   */
-//  boolean isEmailExist(String email);
 }

src/main/java/demo/api/user/UserServiceImpl.java

@@ -19,6 +19,7 @@ public class UserServiceImpl implements UserService {
 
   @Override
   public User signUp(UserSignUpRequest signUpReq) throws Exception {
+    System.out.println("signUpReq = " + signUpReq.toString());
     if(this.isEmailExist(signUpReq.getEmail())) {
       throw new Exception("Your Mail already Exist.");
     }

src/main/java/demo/api/user/dtos/UserSignUpRequest.java

@@ -5,10 +5,11 @@ import javax.validation.constraints.Email;
 import javax.validation.constraints.NotEmpty;
 import lombok.Builder;
 import lombok.Getter;
-import lombok.NoArgsConstructor;
 import lombok.Setter;
+import lombok.ToString;
 
-@Getter @Setter
+@Getter
+@ToString
 public class UserSignUpRequest {
   @NotEmpty(message = "Please enter your Email")
   @Email