public class User{//资源文件中user.name.empty=用户名@NotEmpty(key={user.name.empty})private String name;'''
}

@Target({FIELD, ANNOTATION_TYPE})
@Retention(RUNTIME)
@ReportAsSingleViolation
@Constraint(validatedBy = {})
@NotNull
@Size(min = 1)
public @interface NotEmpty {String message() default "{key}{com.chyjr.hyb.validator.constraints.empty.message}";
​Class<?>[] groups() default { };
​Class<? extends Payload>[] payload() default { };String key() default "";
}

public class MyValidator {private static final Logger log = LoggerFactory.getLogger(HybValidator.class);private static Validator validator = null;private static MessageInterpolator msgInterpolator = null;static {if (validator == null) {LocalValidatorFactoryBean factory = (LocalValidatorFactoryBean) ApplicationContextUtil.getBean("validator");validator = factory.getValidator();msgInterpolator = factory.getMessageInterpolator();}}
​public static HybValidatorResult validate(Object object, Class<?>... groups) {HybValidatorResult result = new HybValidatorResult();Set<ConstraintViolation<Object>> violations = validator.validate(object, groups);Map<String, String> map = new HashMap<>();if (CollectionUtils.isEmpty(violations)) {result.setErrors(false);} else {result.setErrors(true);for (ConstraintViolation<Object> violation : violations) {String path = violation.getPropertyPath().toString();String message = violation.getMessage();if (StringUtils.isBlank(path) || StringUtils.isBlank(message) || map.containsKey(path))continue;message = resolveMessage(message);map.put(path, message);}result.setItems(map);}return result;}private static final Pattern elpattern = Pattern.compile("\\{[^{}]+\\}");private static String resolveMessage(String message) {Matcher matcher = elpattern.matcher(message);try {while (matcher.find()) {String el = matcher.group();//用资源文件信息替换message = {key}{my.empty.message}//注解这里的key会替换成注解NotEmpty定义的key，即//message = {user.name.empty}{my.empty.message}String val = msgInterpolator.interpolate(el, null);if (StringUtils.isBlank(val))continue;message = message.replace(el, val);}} catch (Exception e) {log.error("验证引擎进行数据校验时出现异常, message:{}", message, e);}return message;}
}

 HybValidatorResult bvr = HybValidator.validate(emp, CreateValidator.class);//表示有错误if (bvr.isErrors()) {}
//资源文件内容
//my.empty.message=不能为空
//user.name.empty=用户名

@Documented
@Target({FIELD, ANNOTATION_TYPE})
@Retention(RUNTIME)
@ReportAsSingleViolation
//指定验证器
@Constraint(validatedBy = NotEmptyValidator.class)
public @interface NotEmpty {String message() default "{my.empty.message}";
​Class<?>[] groups() default { };
​Class<? extends Payload>[] payload() default { };String key() default "";
}

public class NotEmptyValidator extends AbstractValidator<NotEmpty,Object>{
​@Overridepublic void initialize(NotEmpty notEmpty) {
​}
​@Overridepublic boolean doIsValid(Object value, ConstraintValidatorContext cc) {return value != null;}
}
​
/**
* 这里采用模板的设计模式
* @param constraintAnnotation
*/
public abstract class AbstractValidator<A extends Annotation,T> implements ConstraintValidator<A,T>{
​/*** 初始化由具体类实现* @param constraintAnnotation*/@Overridepublic abstract void initialize(A constraintAnnotation);
​/*** 初始化具体由实现类实现* @param value* @param context* @return*/@Overridepublic boolean isValid(T value, ConstraintValidatorContext context){//获取验证结果,采用模板方法boolean result = doIsValid(value,context);//当验证错误时修改默认信息if(!result){//改变默认提示信息if(ConstraintValidatorContextImpl.class.isAssignableFrom(context.getClass())){ConstraintValidatorContextImpl constraintValidatorContext = (ConstraintValidatorContextImpl)context;//获取默认提示信息String defaultConstraintMessageTemplate = context.getDefaultConstraintMessageTemplate();Object key = constraintValidatorContext.getConstraintDescriptor().getAttributes().get("key");//禁用默认提示信息
                context.disableDefaultConstraintViolation();//设置提示语（在message前面加上key）context.buildConstraintViolationWithTemplate(key +                                          defaultConstraintMessageTemplate).addConstraintViolation();}}
​return result;}/*** 真正验证方法* @param value* @param context* @return*/public abstract boolean doIsValid(T value, ConstraintValidatorContext context);
}