RestKit，拦截失败的请求/重试，如果它是由于令牌过期引起的

Question

我有一个名为 API 的 class 助手，其方法如下所示：

+(RKObjectManager*) getRestObjectManager{
    NSURL *baseURL = [NSURL URLWithString:BASE_URL];
    AFHTTPClient *client = [[AFHTTPClient alloc] initWithBaseURL:baseURL];
    // initialize RestKit
    RKObjectManager *objectManager = [[RKObjectManager alloc] initWithHTTPClient:client];

    return objectManager;
}

然后我将创建 class 类 API_User 、 API_Group 等。这些 class 中的每一个都将具有

类的方法

+(void)getDetails:(void (^)(User* user) )onSuccess{

    //fetch object manager from api helper and perform request, on success, call the onSuccess block from the function parameter. 

    onSuccess(user); //if it was successful, i will create a user object and //return. 

}

将有多种方法，例如 getDetails ，每种方法都需要发送身份验证令牌才能工作。令牌可以过期，需要刷新。

我该怎么做：

在API helper 中定义某种拦截器，这样当请求失败时，它将获取一个新令牌（我的令牌过期响应本身提供了一个新令牌），并重试已经过期的请求失败的？我不想为我定义的每个端点处理这个。

Answer 1

我所做的是扩展 RKObject Manager 并像这样处理故障：

@implementation MYOWNObjectManager

#pragma mark - RKObjectManager Overrides
- (void)getObjectsAtPath:(NSString *)path parameters:(NSDictionary *)parameters success:(void (^)(RKObjectRequestOperation *operation, 
RKMappingResult *mappingResult))success failure:(void (^)(RKObjectRequestOperation *operation, NSError *error))failure {  
    [super getObjectsAtPath:path parameters:parameters success:success failure:^(RKObjectRequestOperation *operation, NSError *error) {
//check if failure was due to token expiry, if yes call the code to refresh token. otherwise just call   failure(operation, error);

[super getObjectsAtPath:path parameters:parameters success:success failure:failure]; //this line performs the request again. 
    }];
}

此代码段仅适用于 GET。您还需要使用相同的逻辑

覆盖 PUT/POST 等

RestKit，拦截失败的请求/重试，如果它是由于令牌过期引起的

RestKit , Intercept failed request/ retry if it was caused due to token Expiration

ios

objective-c-blocks

restkit