Validate

  • Spring Validation
  • Hibernate Validator

Spring Validation最佳实践及其实现原理，参数校验没那么简单！精讲解简洁
Hibernate Validator -对象基础验证（一）（可能是东半球最全的讲解了）
Hibernate validators unit testing

  1. public class UserTest {
  3.     private Validator validator;
  5.     @BeforeEach
  6.     void setupValidatorInstance() {
  7.         validator = Validation.buildDefaultValidatorFactory().getValidator();
  8.     }
  10.     @Test
  11.     public void setUsername_validateFail_ifSetNull() {
  12.         User user = User.builder().username(null).password("123").build();
  14.         Set<ConstraintViolation<User>> violations = validator.validate(user);
  16.         assertEquals(1, violations.size());
  17.     }
  18. }

  1. class StudentValidator extends Specification {
  3.     @Autowired
  4.     private Validator validator
  6.     def testStudent() {
  7.         Student student = new Student();
  8.         student.setName("");
  9.         student.setAge(3)
  10.         student.setSalary(new BigDecimal("26.98765").setScale(4, RoundingMode.HALF_UP))
  12.         //整个对象完全校验
  13.         Set<ConstraintViolation<Student>> result = validator.validate(student);
  15.         //只校验某个属性
  16.         Set<ConstraintViolation<Student>> result2 = validator.validateProperty(student, "age");
  18.         //主动校验某个属性值是否合规
  19.         Set<ConstraintViolation<Student>> result3 = validator.validateValue(Student.class, "salary", new BigDecimal("123.3434"));
  21.     }
  22. }

group

The first validate() call in Example 5.4, “Using validation groups” is done using no explicit group. There are no validation errors

定义一个接口，按顺序validate

  1. package org.hibernate.validator.referenceguide.chapter05;
  3. import javax.validation.GroupSequence;
  4. import javax.validation.groups.Default;
  6. @GroupSequence({ Default.class, CarChecks.class, DriverChecks.class })
  7. public interface OrderedChecks {
  8. }

字段上要定义分组 FieldChecks.class