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依赖

https://mvnrepository.com/artifact/org.hibernate.validator/hibernate-validator

        
    
     org.hibernate.validator
         
    
     hibernate-validator
         
    
     6.1.2.Final
     
   

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
   
    
     > 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

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