NSURLConnection *newConnection = [[NSURLConnection alloc] initWithRequest:self.request
delegate:self
startImmediately:YES];
self.connection = newConnection;
}
使用下面代码，我将请求的过程打印出来
- (void) connection:(NSURLConnection *)connection
didReceiveResponse:(NSURLResponse *)response{
NSLog(@"将接收输出");
}
- (NSURLRequest *)connection:(NSURLConnection *)connection
willSendRequest:(NSURLRequest *)request
redirectResponse:(NSURLResponse *)redirectResponse{
NSLog(@"即将发送请求");
return(request);
}
- (void)connection:(NSURLConnection *)connection
didReceiveData:(NSData *)data{
NSLog(@"接受数据");
NSLog(@"数据长度为 = %lu", (unsigned long)[data length]);
}
- (NSCachedURLResponse *)connection:(NSURLConnection *)connection
willCacheResponse:(NSCachedURLResponse *)cachedResponse{
NSLog(@"将缓存输出");
return(cachedResponse);
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection{
NSLog(@"请求完成");
}
- (void)connection:(NSURLConnection *)connection
didFailWithError:(NSError *)error{
NSLog(@"请求失败");
}
@end
第一次打印结果如下
2013-01-31 15:28:29.923 NSURLCacheDemo[27848:907] 即将发送请求
2013-01-31 15:28:30.043 NSURLCacheDemo[27848:907] 将接收输出
2013-01-31 15:28:30.045 NSURLCacheDemo[27848:907] 接受数据
2013-01-31 15:28:30.047 NSURLCacheDemo[27848:907] 数据长度为 = 30047
2013-01-31 15:28:30.095 NSURLCacheDemo[27848:907] 接受数据
2013-01-31 15:28:30.098 NSURLCacheDemo[27848:907] 数据长度为 = 3575
2013-01-31 15:28:30.102 NSURLCacheDemo[27848:907] 接受数据
2013-01-31 15:28:30.104 NSURLCacheDemo[27848:907] 数据长度为 = 1482
2013-01-31 15:28:30.105 NSURLCacheDemo[27848:907] 将缓存输出
2013-01-31 15:28:30.107 NSURLCacheDemo[27848:907] 请求完成
