iphone - 收到两次请求？

Question

我使用下面的代码向网络服务发送请求并获取响应，但在这里我一次收到两次请求，我不知道我在哪里犯了错误，请帮助我解决这个问题。提前致谢。

 NSString *poststr=[NSString stringWithFormat:@"&cname=%@&conname=%@&email=%@",companynametxt.text,contactnametxt.text,contactEmailtxt.text];
NSLog(@"poststr %@",poststr);


NSData *postData = [poststr dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];


NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];

NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString: @"web servicess"]];
[request setHTTPMethod:@"POST"];
[request setHTTPBody:postData];

[request setValue:postLength forHTTPHeaderField:@"Content-Length"];
[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
NSURLConnection *theConnection=[[NSURLConnection alloc] initWithRequest:request delegate:self];
NSLog(@"DATA%@",theConnection);
[theConnection release];
NSError *error;
NSURLResponse *response;
NSData *urlData=[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];

NSString *filenameStr=[[NSString alloc]initWithData:urlData encoding:NSUTF8StringEncoding];

NSLog(@"filenameStr %@",filenameStr);

Answer 1

您正在调用两个单独的电话

NSURLConnection *theConnection=[[NSURLConnection alloc] initWithRequest:request delegate:self];

和

NSData *urlData=[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];

使用其中之一，而不是同时使用。