Java EE 8新機能解説 -Bean Validation 2.0編-

10. (C) CASAREAL, Inc. All rights reserved. #glassfish_jp 10 public class HelloDto { @NotBlank(message = "{hello.notblank}") private String message; // getter/setter } @Path("/hello") public class HelloResource { @POST public Response post(@Valid HelloDto helloDto) { // } }  

11. (C) CASAREAL, Inc. All rights reserved. #glassfish_jp ▸ 11 hello.notblank = ▸ ▸ hello.notblank = Message is required hello.notblank = ValidationMessages_ja.properties ValidationMessages_en.properties

12. (C) CASAREAL, Inc. All rights reserved. #glassfish_jp 12 $ curl -v -X POST -H "Content-Type: application/json” -d ‘{"message":""}' http://localhost:8080/api/hello > POST /api/hello HTTP/1.1 > … > < HTTP/1.1 400 Bad Request < … < { "errorType":" ", "messages":[" "] } ※JSON ExceptionMapper

18. (C) CASAREAL, Inc. All rights reserved. #glassfish_jp ▸ @NotNull ▸ @Null ▸ @NotEmpty ▸ @NotBlank ▸ @AssertTrue ▸ @AssertFalse ▸ @Size ▸ @Pattern 18 ▸ @Email ▸ @Digits ▸ @DecimalMax ▸ @DecimalMin ▸ @Max ▸ @Min ▸ @Positive ▸ @PositiveOrZero ▸ @Negative ▸ @NegativeOrZero ▸ @Past ▸ @PastOrPresent ▸ @Future ▸ @FutureOrPresent ※

24. (C) CASAREAL, Inc. All rights reserved. #glassfish_jp 24 public class Sample { private Optional<@Size(min = 3) String> optionalString; private List<@NotNull String> list = new ArrayList<>(); // omitted } ▸ 👏 ▸ ※JSR Container element constraints

25. (C) CASAREAL, Inc. All rights reserved. #glassfish_jp ▸ OptionalXxx java.util.OptionalInt   XxxProperty IntegerProperty   👏 25 public class Sample { @Max(10) private OptionalInt optionalInt; // omitted }

26. (C) CASAREAL, Inc. All rights reserved. #glassfish_jp 26 @Test public void test() { Sample sample = new Sample(); sample.addToOptionalString(“aa"); // 3 sample.addToList(null); // not null sample.addToOptionalInt(20); // 10 // Set<ConstraintViolation<Sample>> violations = validator.validate(sample); // assertEquals(3, violations.size()); }

27. (C) CASAREAL, Inc. All rights reserved. #glassfish_jp 27 @Test public void test2() { Sample sample = new Sample(); sample.addToList(null); // not null 1 sample.addToList(null); // not null 2 // Set<ConstraintViolation<Sample>> violations = validator.validate(sample); // assertEquals(2, violations.size()); } ▸

29. (C) CASAREAL, Inc. All rights reserved. #glassfish_jp @Max(value = 100, groups = Group1.class) @Max(value = 200, groups = Group2.class) int someValue; ▸ ▸ @Xxx.List 👏 29 @Max.List({ @Max(value = 100, groups = Group1.class), @Max(value = 200, groups = Group2.class) }) int someValue;

34. (C) CASAREAL, Inc. All rights reserved. #glassfish_jp 34 <web-app …> <context-param> <param-name> javax.faces.validator.ENABLE_VALIDATE_WHOLE_BEAN </param-name> <param-value>true</param-value> </context-param>  </web-app>

35. (C) CASAREAL, Inc. All rights reserved. #glassfish_jp 35 public class EqualsValidator implements ConstraintValidator<Equals, Object> { @Override public boolean isValid(Object obj, ConstraintValidatorContext context) { // 2 // true } @Constraint(validatedBy = EqualsValidator.class) public @interface Equals { String property1(); // 1 String property2(); // 2

36. (C) CASAREAL, Inc. All rights reserved. #glassfish_jp 36 @Named @ViewScoped @Equals(property1 = "email1", property2 = "email2", message = “…”) public class CompareBean implements Serializable { @NotBlank(message = “…”) @Size(min = 3, message = “…”) private String email1; @NotBlank(message = “…”) @Size(min = 3, message = “…”) private String email2; // omitted    

37. (C) CASAREAL, Inc. All rights reserved. #glassfish_jp 37 <h:form id="email-form"> <h:inputText value="#{compareBean.email1}"/><br/> <h:inputText value="#{compareBean.email2}"/><br/> <h:commandButton value=“ " action="#{compareBean.submit()}"/> <f:validateWholeBean value="#{compareBean}"/> </h:form> Managed Bean ※<f:validateBean/> validationGroups

39. (C) CASAREAL, Inc. All rights reserved. #glassfish_jp ▸ <f:validateWholeBean>   ▸ 39※ h:commandButton <h:form id="email-form"> <h:inputText value=“…”/><br/> <h:inputText value=“…”/><br/> <h:commandButton value=“ " action=“…”/> <f:validateWholeBean value="#{compareBean}"/> </h:form>

Java EE 8新機能解説 -Bean Validation 2.0編-

Masatoshi Tada

Java EE 8新機能解説 -Bean Validation 2.0編-