什么方法可以用post向网络传递多个参数
如题，最好有代码

谢谢
[解决办法]
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request setHTTPMethod:@"POST"];
[request setValue:[NSString stringWithFormat:@"%d", postData.length] forHTTPHeaderField:@"Content-Length"];
[request setValue:@"application/x-www-form-urlencoded charset=utf-8" forHTTPHeaderField:@"Content-Type"];
[request setHTTPBody:postData];

NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request
delegate:self];
[解决办法]
NSURL *url = [NSURL URLWithString:@"http://xx.ss.ss.ss/"];
//ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url];
ASIFormDataRequest *request=[ASIFormDataRequest requestWithURL:url];
[request setPostValue:appraiseTextField.text forKey:@"app"];
[request setPostValue:numberTextField.text forKey:@"count"];
[request setPostValue:goodsTextField.text forKey:@"name"];
[request setPostValue:priceTextField.text forKey:@"price"];