spring boot表单基本验证

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1、实体类中对需要的字段进行注解验证

package com.xb.entity;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.validation.constraints.Min;
import javax.validation.constraints.NotBlank;

/**
 * Created by XueBiao on 2018/6/17.
 */
@Entity
public class Girl {
    @Id
    @GeneratedValue
    private  Integer id;
    private  String name;
    @Min(value = 18,message = "未成年人禁止入内")
    private  Integer age;
    @NotBlank(message="尺寸不能为空")
    private  String cupSize;
    public  Girl(){}

    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;
    }

    public String getCupSize() {
        return cupSize;
    }

    public void setCupSize(String cupSize) {
        this.cupSize = cupSize;
    }
}

2、在controller类中使用@Valid注解进行提示需要验证这个对象

/**
 * Created by XueBiao on 2018/6/17.
 */
@RestController
public class GirlController {
    @Autowired
    private GirlRepository girlRepository;

    //    查询信息
    @GetMapping(value = "/girlList")
    public List<Girl> girlList() {
        return girlRepository.findAll();
    }

    /**
     * 添加信息
     *
     * @return
     */
    @PostMapping(value = "/addGirl")
    //加入@Valid表示要验证的这个对象,验证完之后不管结果是否成功都
    // 会把结果存放到BindingResult对象中
    public Girl addGirl(@Valid Girl girl, BindingResult bindingResult) {
        if (bindingResult.hasErrors()) {
            System.out.println(bindingResult.getFieldError().getDefaultMessage());
            return null;
        }
        girl.setCupSize(girl.getCupSize());
        girl.setAge(girl.getAge());
        girl.setName(girl.getName());
        return girlRepository.save(girl);
    }

}