@NotBlank不生效怎么解决?以下是部分关键代码

@GetMapping("/valid")
    public void test19(@Valid ValidedParam param) {
        //  ValidedParam{sex=1, name='', birthday='2020-1-1'}
        System.out.println(param);
    }






public class ValidedParam {

    private int sex;
    @NotBlank(message = "不能为空")
    private String name;
    @Birthday
    private String birthday;

    public int getSex() {
        return sex;
    }

    public void setSex(int sex) {
        this.sex = sex;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getBirthday() {
        return birthday;
    }

    public void setBirthday(String birthday) {
        this.birthday = birthday;
    }

    @Override
    public String toString() {
        return "ValidedParam{" +
                "sex=" + sex +
                ", name='" + name + '\'' +
                ", birthday='" + birthday + '\'' +
                '}';
    }
}

..

改成这样就可以了： 

@GetMapping("/valid")
    public void test19(@ValidatedValidedParam param) {
        //  ValidedParam{sex=1, name='', birthday='2020-1-1'}
        System.out.println(param);
    }