spring boot项目自定义参数校验规则示例详解

@Target({ElementType.METHOD, ElementType.FIELD, ElementType.ANNOTATION_TYPE, ElementType.CONSTRUCTOR, ElementType.PARAMETER})
@Retention(RetentionPolicy.RUNTIME)
@Documented
//这里的class就是实现具体校验规则的类
@Constraint(validatedBy = {MobileNoValidator.class})
public @interface MobileNo {
    String message() default "请输入正确的手机号";
    Class<?>[] groups() default {};
    Class<? extends Payload>[] payload() default {};
}

public class MobileNoValidator implements ConstraintValidator<MobileNo, String> {
    @Override
    public boolean isValid(String value, ConstraintValidatorContext context) {
        if ((value == null)) {
            return false;
        }
        String regex = "^1\\d{10}$";
        Pattern p = Pattern.compile(regex, Pattern.CASE_INSENSITIVE);
        Matcher m = p.matcher(value);
        return m.matches();
    }
}

public class UserVo {
    @NotNull
    private Long id;
    @NotNull
    @MobileNo
    private String mobileNo;
    public Long getId() {
        return id;
    }
    public void setId(Long id) {
        this.id = id;
    }
    public String getMobileNo() {
        return mobileNo;
    }
    public void setMobileNo(String mobileNo) {
        this.mobileNo = mobileNo;
    }
}

@RestController
public class UserController {
    @PostMapping(value = "/test")
    public String test(@Validated @RequestBody UserVo userVo) {
        return "success";
    }
}