code: @Test public void testProviderValidation(){
    ServiceConfig<ValidationService> service=new ServiceConfig<ValidationService>();
    service.setApplication(new ApplicationConfig("validation-provider"));
    service.setRegistry(new RegistryConfig("N/A"));
    service.setProtocol(new ProtocolConfig("dubbo",29582));
    service.setInterface(ValidationService.class.getName());
    service.setRef(new ValidationServiceImpl());
    service.setValidation(String.valueOf(true));
    service.export();
    try {
      ReferenceConfig<ValidationService> reference=new ReferenceConfig<ValidationService>();
      reference.setApplication(new ApplicationConfig("validation-consumer"));
      reference.setInterface(ValidationService.class);
      reference.setUrl("dubbo://127.0.0.1:29582");
      ValidationService validationService=reference.get();
      try {
        ValidationParameter parameter=new ValidationParameter();
        parameter.setName("liangfei");
        parameter.setEmail("liangfei@liang.fei");
        parameter.setAge(50);
        parameter.setLoginDate(new Date(System.currentTimeMillis() - 1000000));
        parameter.setExpiryDate(new Date(System.currentTimeMillis() + 1000000));
        validationService.save(parameter);
        try {
          parameter=new ValidationParameter();
          validationService.save(parameter);
          Assert.fail();
        }
   catch (      RpcException e) {
          Assert.assertTrue(e.getMessage().contains("ConstraintViolation"));
        }
        validationService.delete(2,"abc");
        try {
          validationService.delete(0,"abc");
          Assert.fail();
        }
   catch (      RpcException e) {
          Assert.assertTrue(e.getMessage().contains("ConstraintViolation"));
        }
        try {
          validationService.delete(2,null);
          Assert.fail();
        }
   catch (      RpcException e) {
          Assert.assertTrue(e.getMessage().contains("ConstraintViolation"));
        }
        try {
          validationService.delete(0,null);
          Assert.fail();
        }
   catch (      RpcException e) {
          Assert.assertTrue(e.getMessage().contains("ConstraintViolation"));
        }
      }
    finally {
        reference.destroy();
      }
    }
    finally {
      service.unexport();
    }
  }
  