依赖
https://mvnrepository.com/artifact/org.hibernate.validator/hibernate-validator
<dependency> <groupId>org.hibernate.validator</groupId> <artifactId>hibernate-validator</artifactId> <version>6.1.2.Final</version> </dependency>
使用示例
package org.example;
import javax.validation.ConstraintViolation;
import javax.validation.Validation;
import javax.validation.Validator;
import javax.validation.ValidatorFactory;
import javax.validation.constraints.Max;
import javax.validation.constraints.Min;
import javax.validation.constraints.NotBlank;
import javax.validation.constraints.NotNull;
import java.util.Set;
class Person {
@NotBlank
@NotNull
private String name;
@Min(0)
@Max(150)
private int age;
@NotNull
private boolean gender;
public Person(String name, int age, boolean gender) {
this.name = name;
this.age = age;
this.gender = gender;
}
}
public class ValidatorTest {
public static void main(String[] args) {
// 获取验证器
ValidatorFactory factory = Validation.buildDefaultValidatorFactory();
Validator validator = factory.getValidator();
// 数据验证
Person person = new Person("", 151, false);
Set<ConstraintViolation<Person>> violations = validator.validate(person);
// 打印验证结果
for(ConstraintViolation violation: violations){
System.out.println(violation.getPropertyPath() + violation.getMessage());
}
/**
* age最大不能超过150
* name不能为空
*/
}
}
参考
https://docs.jboss.org/hibernate/stable/validator/reference/en-US/html_single/
</div>
