Question

我正在尝试将403 forbidden respone映射到自定义对象。我使用响应代码注册了一个映射，如下所示：

RKResponseDescriptor* tacResponseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:termsAndConditionMapping pathPattern:@"user" keyPath:nil statusCodes:[NSIndexSet indexSetWithIndex:403]];
[objectManager addResponseDescriptor:tacResponseDescriptor];

但是当从服务器发送403响应时，我只是从RestKit获取一个'Non-successful status code encountered: performing mapping with nil target object'日志，并且执行失败块时操作的mappingResult属性为{{ 1}}。我在这做错了什么？我需要将特定路径的一个特定错误情况映射到特定对象。

祝你好运，迈克尔

Answer 1

我不完全确定你的意思，但是如果你最终进入故障区域，则没有mappingResult属性。但是可以在operation属性

中隐藏错误

[[[operation.error userInfo] objectForKey: RKObjectMapperErrorObjectsKey] firstObject];

Answer 2

当响应状态代码不是2xx时，将调用失败块，您可以在那里捕获自定义错误，启用operation.HTTPRequestOperation.response.statusCode

如果你想用更通用的方式处理RestKit的错误，你可以考虑在你的RKObjectManager中为所有4xx和5xx错误添加一个响应描述符 - 在这个例子中，我将使用这个主体结构映射错误

{"errorCode":"996","errorMessage":"This is my custom error message"}

配置您的RKObjectManager：

RKObjectMapping* errorMapping = [RKObjectMapping mappingForClass:[RKErrorMessage class]];
[errorMapping addPropertyMapping:[RKAttributeMapping attributeMappingFromKeyPath:@"errorMessage" toKeyPath:@"errorMessage"]];
[errorMapping addPropertyMapping:[RKAttributeMapping attributeMappingFromKeyPath:nil toKeyPath:@"userInfo"]];
NSIndexSet *clientErrorStatusCode = RKStatusCodeIndexSetForClass(RKStatusCodeClassClientError); // Any response in the 4xx
NSIndexSet *serverErrorStatusCode = RKStatusCodeIndexSetForClass(RKStatusCodeClassServerError); // Any response in the 5xx
RKResponseDescriptor *clientErrorDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:errorMapping method:RKRequestMethodAny pathPattern:nil keyPath:@"" statusCodes:clientErrorStatusCode];
RKResponseDescriptor *serverErrorDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:errorMapping method:RKRequestMethodAny pathPattern:nil keyPath:@"" statusCodes:serverErrorStatusCode];
//... Remember to add response descriptors to your object manager

然后在您的请求的失败块中，您可以打开状态代码并处理错误：

failure:^(RKObjectRequestOperation *operation, NSError *error) {
    RKErrorMessage *errorMessage = [[error.userInfo objectForKey:RKObjectMapperErrorObjectsKey] firstObject];
    NSString *errorCode = [errorMessage.userInfo objectForKey:@"errorCode"];

    if (operation.HTTPRequestOperation.response.statusCode == 304){
         //Handle your 304 error
    }
}

RestKit映射状态代码不成功

2 个答案: