Objective-C ,ios,iphone开发基础:http网络编程

- (IBAction)loadData:(id)sender {

NSURL* url = [NSURL URLWithString:@"http://162.105.65.251:8080/service/downloadusernote?user_name=weishouqiang"];
NSURLRequest* request = [[NSURLRequest alloc] initWithURL:url];
NSURLConnection* conn = [[NSURLConnection alloc] initWithRequest:request delegate:self];
[conn release];
[request release];
[upTextView resignFirstResponder];
[downTextView resignFirstResponder];

}

- (IBAction)upLoad:(id)sender {

NSData* upData = [upTextView.text dataUsingEncoding:NSUTF8StringEncoding];
NSURL* url = [NSURL URLWithString:@"http://162.105.65.251:8080/service/uploadusernote?user_name=weishouqiang"];
NSMutableURLRequest* request = [[NSMutableURLRequest alloc] initWithURL:url];
[request setHTTPMethod:@"POST"];
[request setValue:[NSString stringWithFormat:@"%ld",[upData length]]forHTTPHeaderField:@"Content-Length"];
[request setHTTPBody:upData];
NSURLConnection* conn = [[NSURLConnection alloc] initWithRequest:request delegate:self];
[conn release];
[request release];
[upTextView resignFirstResponder];
[downTextView resignFirstResponder];
}