<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>
</dependencies>
@RestController
public class UserController {
@PostMapping("/users")
public ResponseEntity<String> createUser(@Valid @RequestBody User user) {
// ...
}
}
public class User {
private String username;
private String password;
// getters and setters
}
@Pattern(regexp = "^[\\w-]+(\\.[\\w-]+)*@[\\w-]+(\\.[\\w-]+)+$")
private String email;
yaml
spring.mvc.throw-exception-if-no-handler-found=true
spring.web.resources.add-mappings=false
spring.messages.basename=ValidationMessages
