JSR303 参数校验

<dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-validation</artifactId>
 </dependency>

public class LoginVo {
	
        //框架自带注解
	@NotNull
        //自定义注解,验证手机号格式
	@IsMobile
	private String mobile;
	
	@NotNull
	@Length(min=32)
	private String password;
}

    @RequestMapping("/do_login")
    @ResponseBody
        //在LoginVo上添加Valid注解
    public Result<Boolean> doLogin(HttpServletResponse response, @Valid LoginVo loginVo) {
    	log.info(loginVo.toString());
    	//登录
    	userService.login(response, loginVo);
    	return Result.success(true);
    }

自定义注解使用

手机号格式验证

public class ValidatorUtil {
	
	private static final Pattern mobile_pattern = Pattern.compile("1\\d{10}");
	
	public static boolean isMobile(String src) {
		if(StringUtils.isEmpty(src)) {
			return false;
		}
		Matcher m = mobile_pattern.matcher(src);
		return m.matches();
	}
}

@Target({ METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER })
@Retention(RUNTIME)
@Documented
@Constraint(validatedBy = {IsMobileValidator.class })
public @interface  IsMobile {
	
        //true必须得传值
	boolean required() default true;
	
	String message() default "手机号码格式错误";

	Class<?>[] groups() default { };

	Class<? extends Payload>[] payload() default { };
}

public class IsMobileValidator implements ConstraintValidator<IsMobile, String> {

	private boolean required = false;
	
	public void initialize(IsMobile constraintAnnotation) {
		required = constraintAnnotation.required();
	}

	public boolean isValid(String value, ConstraintValidatorContext context) {
		if(required) {
			return ValidatorUtil.isMobile(value);
		}else {
			if(StringUtils.isEmpty(value)) {
				return true;
			}else {
				return ValidatorUtil.isMobile(value);
			}
		}
	}
}