关于iOS上的http请求还在不断学习，从早先的时候发现原来iOS的http请求可以到后来的，发现ASIHttpRequest会有User-Agent，到现在发现竟然NSURLRequest默认不带USer-Agent的。添加方法：

#define USERAGENT @"Mozilla/5.0 (iPhone; CPU iPhone OS 5_1_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9B206 Safari/7534.48.3"

NSMutableURLRequest *restRequest = [NSMutableURLRequest requestWithURL:url

    cachePolicy:NSURLRequestReloadIgnoringCacheData

    timeoutInterval:30.0];

[restRequest setValue:USERAGENT forHTTPHeaderField:@"User-Agent"];

而我的情况要稍微复杂一点，发现服务器对于我请求的URL竟然进行了跳转，还需要再实现一个代理:

-(NSURLRequest *)connection:(NSURLConnection*)connection

    willSendRequest:(NSURLRequest*)request

    redirectResponse:(NSURLResponse*)redirectResponse{

    NSMutableURLRequest *newReq = [request mutableCopy];

    [newReq setValue:USERAGENT forHTTPHeaderField:@"User-Agent"];

    return [newReq autorelease];

}

that’s all

参考资料:

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