<dependency>
      <groupId>org.hibernate</groupId>
      <artifactId>hibernate-validator</artifactId>
      <version>5.4.3.Final</version>
    </dependency>
    <dependency>
      <groupId>org.glassfish</groupId>
      <artifactId>javax.el</artifactId>
      <version>3.0.0</version>
    </dependency>

package com.me.domain;


import org.hibernate.validator.constraints.NotBlank;

import javax.validation.constraints.Min;

public class Student {
    private Integer id;
    @NotBlank
    @Min(4)
    private String name;
    private Integer sex;
    private Integer age;

    public Integer getId() {
        return id;
    }
    public void setId(Integer id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public Integer getSex() {
        return sex;
    }
    public void setSex(Integer sex) {
        this.sex = sex;
    }
    public Integer getAge() {
        return age;
    }
    public void setAge(Integer age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "Student{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", sex=" + sex +
                ", age=" + age +
                '}';
    }
}



package com.me;

import com.me.domain.Student;

import javax.validation.ConstraintViolation;
import javax.validation.Validation;
import javax.validation.Validator;
import java.util.Set;

public class App {
    public static void main(String[] args) {

        try {
            Student student = new Student();
            student.setId(1);
            student.setName("张三");
            student.setAge(18);
            student.setSex(1);
            Validator validator = Validation.buildDefaultValidatorFactory().getValidator();
            Set<ConstraintViolation<Student>> validate = validator.validate(student);
            if (validate.size() > 0) {
                validate.forEach(System.out::println);

                System.out.println("验证不通过");
            } else {
                System.out.println("验证通过");
            }

        }catch (Exception e){
            e.printStackTrace();
        }

    }
}