Question

有没有人试图为GET请求实现处理程序（POST方法的问题），而不使用包含的（和酷的）GCDWebUploader？

我需要服务器响应将文件上传到客户端的GET请求http://local/download/filename.ext。

我正在将请求符合代码＆＃34; BackgroundSessionManager＆＃34; （可在此处获取：AFNetworking 2.0 and background transfers）并且无需担心即可发送和触发。

我正在获取服务器端的日志：

[DEBUG] Did start background task
[DEBUG] Connection received 248 bytes on socket 14
[DEBUG] Connection on socket 14 preflighting request "GET /download/file.ext with 248 bytes body
[DEBUG] Connection on socket 14 processing request "GET /download/file.ext" with 248 bytes body
[EXCEPTION] *** +[NSJSONSerialization dataWithJSONObject:options:error:]: value parameter is nil
[DEBUG] Did close connection on socket 14

我无法弄清楚如何设置处理程序，以便不关心从JSON解析的不存在的查询。

[webServer addHandlerForMethod:@"GET" path:@"/download" requestClass:[GCDWebServerRequest class] processBlock:^GCDWebServerResponse *(GCDWebServerRequest* request) {
        __strong AppDelegate* strongSelf = weakSelf;
        NSLog(@"request for download is %@", request);

        return [strongSelf downloadFile:request];
    }];

Answer 1

我删除了此代码以使其正常工作：

/*
 // Add a handler to respond to GET requests
[webServer addDefaultHandlerForMethod:@"GET"
                             requestClass:[GCDWebServerRequest class]
                        asyncProcessBlock:^(GCDWebServerRequest* request, GCDWebServerCompletionBlock completionBlock) {

                            __strong AppDelegate* strongSelf = weakSelf;
.....
*/

[webServer addHandlerForMethod:@"GET" path:@"/download" requestClass:[GCDWebServerRequest class] processBlock:^GCDWebServerResponse *(GCDWebServerRequest* request) {
    __strong AppDelegate* strongSelf = weakSelf;
    NSLog(@"request for download is %@", request);

    return [strongSelf downloadFile:request];
}];

无论如何，注释掉了接管并期待JSON数据包的默认处理程序。

<强>更新

要使用GCDWebServer和NSURLSessions实现后台文件传输（即使使用AFNetworking），最好的方法是使用MatchBlock实例化GET处理程序，如下所示：

[webServer addHandlerWithMatchBlock:^GCDWebServerRequest *(NSString* requestMethod, NSURL* requestURL, NSDictionary* requestHeaders, NSString* urlPath, NSDictionary* urlQuery) {

        if (![requestMethod isEqualToString:@"GET"]) {
            return nil;
        }
        if (![urlPath hasPrefix:@"/download"]) {
            return nil;
        }
        return [[GCDWebServerRequest alloc] initWithMethod:requestMethod url:requestURL headers:requestHeaders path:urlPath query:urlQuery];

    } processBlock:^GCDWebServerResponse *(GCDWebServerRequest* request) {

        GCDWebServerResponse* response = nil;

        NSString* filePath = [[weakSelf applicationDocumentsDirectory] stringByAppendingPathComponent:[[request.path stringByRemovingPercentEncoding]];
        NSString* fileType = [[[NSFileManager defaultManager] attributesOfItemAtPath:filePath error:NULL] fileType];
        if (fileType) {
            if ([fileType isEqualToString:NSFileTypeRegular]) {
                    // always allow ranges in our requests
                    response = [GCDWebServerFileResponse responseWithFile:filePath byteRange:request.byteRange];
                    [response setValue:@"bytes" forAdditionalHeader:@"Accept-Ranges"];
            }
        }
        if (response) {
            response.cacheControlMaxAge = 360;
        } else {
            response = [GCDWebServerResponse responseWithStatusCode:kGCDWebServerHTTPStatusCode_NotFound];
        }
        return response;

    }];

用于后台文件传输的GCDWebServer处理程序（非GCDWebUploader）

1 个答案: