AFNetworking可以处理请求队列吗？ [英] Can AFNetworking handle a queue of requests?

问题描述

我在iOS 6上的示例：

My example on iOS 6:

• 10需要将多部分请求（按顺序）发送到服务器。
  （因此请求形成一个队列）


• 应显示进度。


• 如果一个请求失败，则所有后续操作都将失败


• 请求队列应该可以取消

• 10 Multi-Part requests need to be sent (in order) to the server. (so the request forms a queue)
• progress should be shown.
• if one request fails all following should fail
• a request queue should be cancellable

AFNetworking可以帮我解决这个问题吗？或者我应该尝试用NSOperations构建一些东西并自己运行循环？

Can AFNetworking help me with this? Or should I try to build something with NSOperations and run the loops myself?

如果我需要在这些请求之间传递上下文数据，例如第一个请求产生的事务id 。是否有任何关于我需要考虑的线程可见性的考虑因素？

If I need to pass context data between theses requests for example a transaction id produced by the first request. Are there any considerations about thread visibility I need to consider?

推荐答案

AFNetworking可以做到这一点。我建议您使用AFHTTPRequestOperationManager（它本身使用NSOperation），而不是AFHTTPSessionManager。有很多方法可以使用AFHTTPSessionManager来实现它，但没有一种方法可以像操作一样优雅。

AFNetworking can do this. I recommend that you use AFHTTPRequestOperationManager (which itself uses NSOperation), rather than AFHTTPSessionManager. There are ways to do it with AFHTTPSessionManager, but none as elegant as with operations.

在幕后，这是你没有经理的情况：

Under the hood, here's what you'd do without the manager:

您将使用请求序列化程序来创建NSMutableURLRequest（例如， [AFHTTPRequestSerializer -multipartFormRequestWithMethod：URLString：parameters：constructBodyWithBlock：error：] ;也有类似的JSON请求序列化程序）。

You will use a request serializer to make your NSMutableURLRequest (for example, [AFHTTPRequestSerializer -multipartFormRequestWithMethod:URLString:parameters:constructingBodyWithBlock:error:]; there's a similar JSON request serializer too).

获得URL请求后，使用 [AFHTTPRequestOperation -initWithRequest：] 进行操作。您还应设置其完成块。

Once you have a URL Request, make the operation with [AFHTTPRequestOperation -initWithRequest:]. You should also set its completion blocks.

最后，将您的操作添加到 [AFHTTPRequestOperationManager manager] .operationQueue 和开始它。

Finally, add your operation to [AFHTTPRequestOperationManager manager].operationQueue and start it.

现在您已了解这基本上是如何一起工作，这是一个更简单的方法：

Now that you understand how this is basically all working together, here's a simpler approach:

• 子类 AFHTTPRequestOperationManager ，可选择设置 requestSerializer 如果您不喜欢默认


• 覆盖（或使用新实现复制） -POST：参数：constructBodyWithBlock：success：failure：] - 你想要做的不是立即开始你的操作。


• 设置NSOperation依赖关系链


• 开始第一个

• Subclass AFHTTPRequestOperationManager, optionally setting the requestSerializer if you don't like the default
• Override (or copy with new implementation) -POST:parameters:constructingBodyWithBlock:success:failure:] - what you want to do is NOT start your operation right away.
• Set the NSOperation dependency chains
• start the first one

这篇关于AFNetworking可以处理请求队列吗？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！