validation activation and error message defined

Author: ramazansakin

src/main/java/com/bezkoder/springjwt/controllers/AuthController.java

@@ -19,6 +19,7 @@
 import org.springframework.security.core.GrantedAuthority;
 import org.springframework.security.core.context.SecurityContextHolder;
 import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.validation.annotation.Validated;
 import org.springframework.web.bind.annotation.CrossOrigin;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestBody;
@@ -34,6 +35,7 @@
 @CrossOrigin(origins = "*", maxAge = 3600)
 @RestController
 @RequiredArgsConstructor
+@Validated
 @RequestMapping("/api/auth")
 public class AuthController {
 

src/main/java/com/bezkoder/springjwt/payload/request/SignupRequest.java

@@ -3,21 +3,25 @@
 import lombok.Value;
 
 import javax.validation.constraints.Email;
+import javax.validation.constraints.NotBlank;
 import javax.validation.constraints.Size;
 import java.util.Set;
 
 @Value
 public class SignupRequest {
 
+    @NotBlank(message = "username is required")
     @Size(min = 3, max = 20)
     String username;
 
+    @NotBlank(message = "email is required")
     @Size(max = 50)
-    @Email
+    @Email(message = "email is not valid")
     String email;
 
     Set<String> roles;
 
+    @NotBlank(message = "password is required")
     @Size(min = 6, max = 40)
     String password;