Spring Boot 進階之Web進階 學習 - 表單驗證

Girl.java中  限制年齡小於18歲
@Entity
public class Girl {
    @Id
    @GeneratedValue
    private Integer id;
    private  String cupSize;
    @Min(value = 18,message = "未成年少女禁止入內")
    private  Integer age;

    public Girl() {
    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getCupSize() {
        return cupSize;
    }

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

    public Integer getAge() {
        return age;
    }

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

在GirlController.java中

   /*
     * 添加一個女生
     * @date 2018/4/20 下午5:44
     * @param [cupSize, age]
     * @return com.example.girl.Girl
     */
    @PostMapping(value = "/add")
    public Girl girlAdd(@Valid Girl girl, BindingResult bindingResult){
        if(bindingResult.hasErrors()){
            System.out.print(bindingResult.getFieldError().getDefaultMessage());
            return null;
        }//        Girl girl = new Girl();        girl.setCupSize(girl.getCupSize());        girl.setAge(girl.getAge());        return girlReposistory.save(girl);    }