我想从短网址下载声音文件(例如:www.adjix.com
)
当我尝试从普通链接,它没关系,但从短网址,如何首先重定向,然后下载
我使用这部分代码来创建请求:
NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:urlToSound]];
NSURLConnection *theConnection =[[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
if (theConnection) {
self.receiveData = [[NSMutableData data] retain];
}
此代码可以查看标题:
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{
[receiveData setLength:0];
if ([response isKindOfClass:[NSHTTPURLResponse self]] ) {
NSDictionary *headers = [(NSHTTPURLResponse *)response allHeaderFields];
NSLog(@"headers: %@", headers);
}
}
当我尝试直接下载时,链接到MP3标题是:
"Accept-Ranges" = bytes;
Connection = "Keep-Alive";
"Content-Length" = 21316;
"Content-Type" = "audio/mpeg";
Date = "Sat, 07 Feb 2009 16:01:34 GMT";
Etag = "\"2d810-5344-7dda240\"";
"Keep-Alive" = "timeout=15, max=100";
"Last-Modified" = "Sat, 25 Jun 2005 12:26:41 GMT";
Server = Apache;
当我尝试使用短网址(adjix.com/3na3
)下载文件时,标题为:
"Cache-Control" = "max-age=60";
Connection = close;
"Content-Length" = 692;
"Content-Type" = "text/html";
Date = "Sat, 07 Feb 2009 19:18:23 GMT";
Expires = "Sat, 07 Feb 2009 19:19:23 GMT";
Server = "Apache/1.3.41 (Darwin) mod_ssl/2.8.31 OpenSSL/0.9.7l";
答案 0 :(得分:0)
您能提供更多信息吗?特别是,最好提及您用于执行HTTP请求的类,以及使用重定向URL时会出现什么情况。
答案 1 :(得分:0)
您可能想尝试GTMHTTPFetcher类,它是Google Toolbox for Mac的一部分。它为您处理重定向。
答案 2 :(得分:0)
NSURLConnection有一个委托方法,您可以专门实现该方法来处理重定向。但是,由于您的请求的用户代理字符串,您连接的服务器可能会有不同的行为。