ios - 使用在 TableView 中显示的 NSURLConnection 从服务器获取数据

Question

我收到 didFailWithError 请帮助我

 scanCode = @"123";
    NSString * urlString=[NSString stringWithFormat:@"http://1-dot-digiphoto-01.appspot.com/v1/service/rest/getAlbums/QR/{%@}",scanCode];



NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:urlString]];

// Create url connection and fire request
NSURLConnection *conn = [[NSURLConnection alloc] initWithRequest:request delegate:self];

if (!conn)
{
    responseData = nil;
    NSLog(@"Connection Error");

}

Answer 1

检查下面的代码:

NSString *urlString = [NSString stringWithFormat:@"http://1-dot-digiphoto-01.appspot.com/v1/service/rest/getAlbums/QR/{%@}",@"123"];

NSURL *url = [NSURL URLWithString:urlString];
NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url];

[theRequest addValue: @"application/x-www-form-urlencoded; charset=utf-8" forHTTPHeaderField:@"Content-Type"];
[theRequest setHTTPMethod:@"GET"];

NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];

if( connection )
{
    NSLog(@"Success");
}
else
{
    NSLog(@"Failed");
}