spring boot学习(7) SpringBoot 之表单验证

第一节：SpringBoot 之表单验证@Valid

是spring-data-jpa的功能；

 

下面是添加学生的信息例子，要求姓名不能为空，年龄大于18岁。

 

贴下代码吧：

Student实体：

package com.cy.entity;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;
import javax.validation.constraints.Min;
import javax.validation.constraints.NotEmpty;
import javax.validation.constraints.NotNull;


@Entity
@Table(name="t_student")
public class Student {
    @Id
    @GeneratedValue
    private Integer id;
    
    @NotEmpty(message="姓名不能为空！")
    @Column(length=50)
    private String name;
    
    @NotNull(message="年龄不能为空！")
    @Min(value=18,message="年龄必须大于18岁")
    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 getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }
}

View Code

StudentDao.java:

package com.cy.dao;

import org.springframework.data.jpa.repository.JpaRepository;

import com.cy.entity.Student;

public interface StudentDao extends JpaRepository<Student, Integer>{

}

View Code

StudentService.java:

package com.cy.service;

import javax.annotation.Resource;

import org.springframework.stereotype.Service;

import com.cy.dao.StudentDao;
import com.cy.entity.Student;

@Service
public class StudentService {
    
    @Resource
    private StudentDao studentDao;
    
    public void add(Student student) {
        studentDao.save(student);
    }
}

View Code