AlamoFire忽略缓存控制标头 [英] AlamoFire Ignore Cache-Control Headers

问题描述

使用AlamoFire执行请求/处理响应时，是否可以忽略 cache-control 标头？

Is it possible to ignore cache-control headers when performing a request/handling the response with AlamoFire?

当前，我正在按以下方式进行请求，并且服务器正在返回大型 cache-control 标头，而实际上我们需要忽略它们。

Currently I am making a request as follows, and the server is returning large cache-control headers, when in fact we need to ignore them.

Alamofire.request(.GET, url).responseJSON { (_, _, result) in // Do something

我知道正确的解决方案是修改服务器响应，但目前尚不可行。

I know the correct solution is to modify the server response, but this is not feasible at this time.

此外，在其他请求中，我确实希望兑现 cache-control 标头，因此理想情况下，我会提供一个解决方案

Also, there are other requests where I do want to honor the cache-control headers, so ideally I would a solution that does not involve changing a global configuration of AlamoFire.

推荐答案

要忽略缓存的数据，您需要设置<$ c在使用Alamofire启动它之前，先在 NSURLRequest 上使用$ c> cachePolicy 。

To ignore the cached data, you need to set the cachePolicy on the NSURLRequest before using Alamofire to start it.

let URL = NSURL(string: "https://my_url_path...")!
let URLRequest = NSMutableURLRequest(URL: URL)
URLRequest.cachePolicy = .ReloadIgnoringCacheData

Alamofire.request(URLRequest)
    .response { response in
        print(response)
    }

设置<$ c URL请求上的$ c> cachePolicy 始终会覆盖 NSURLSessionConfiguration 上设置的值。

Setting the cachePolicy on the URL request always overrides the value set on the NSURLSessionConfiguration.

默认情况下，NSURLSessionConfiguration缓存策略设置为 .UseProtocolCachePolicy ，它将遵守 Cache-Control 标头值。

By default, the NSURLSessionConfiguration cache policy is set to .UseProtocolCachePolicy which will honor the Cache-Control header values.

这篇关于AlamoFire忽略缓存控制标头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！