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我尝试按照这篇iOS 帖子中的说明进行操作：如何执行 HTTP POST 请求？但不幸的是，服务器回答但没有给我任何数据。

被connection didReceiveResponse调用以及connectionDidFinishLoading没有错误。

难道我做错了什么？我用Hurl.it测试了该服务，它运行得恰到好处。

requestUrlString=一个普通的网址，

postString= 类似“appId=1&last_update=0”

responseData = [[NSMutableData alloc] initWithLength:0];

NSURL *baseURL = [NSURL URLWithString:[requestUrlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:baseURL];
[request setHTTPMethod:@"POST"];
[request setValue:[NSString stringWithFormat:@"%d",[postString length]] forHTTPHeaderField:@"Content-Length"];
[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
[request setHTTPBody:[postString dataUsingEncoding:NSUTF8StringEncoding]];

NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self startImmediately:NO];
[connection start];


- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
    [responseData setLength:0];
    NSLog(@"Connection didReceiveResponse");
}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
    [responseData appendData:data];
    NSLog(@"Connection didReceiveData");
}

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
    NSLog(@"Connection Error: %@", [error description]);

    [[[UIAlertView alloc] initWithTitle:@"Error"
                                 message:[error description]
                                delegate:nil
                       cancelButtonTitle:@"OK"
                       otherButtonTitles:nil] show];
}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
    NSLog(@"Connection didFinishLoading");
    NSLog(@"data %@", [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding]);
}

请不要参考 ASIHTTP 我在这里得到了同样的结果。

//编辑：我修复了很抱歉打扰你我的问题。问题是编码类型。

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1 回答 1

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Web 服务是否生成响应正文？或者它只是生成响应头？如果没有响应正文，则没有响应显示在 iOS 上。

另外，我相信您需要一个“接受”标题。

于 2012-07-17T20:51:34.090 回答