有人可以用一个实际的例子来澄清这个任务吗?我应该联系 https 端点发送身份验证数据(用户名和密码)并获取纯文本响应. 解决方案 您可以使用 NSURLConnection 如下:设置您的 NSURLRequest:使用 requestWithURL:(NSURL *)theURL 来初始化请求. 如果您需要指定 POST 请求和/或 HTTP 标头，请使用 NSMutableURLRequest 和 (void)setHTTPMethod:(NSString *)method(void)setHTTPBody:(NSData *)data(void)setValue:(NSString *)value forHTTPHeaderField:(NSString *)field使用 NSURLConnection 以两种方式发送您的请求:同步:(NSData *)sendSynchronousRequest:(NSURLRequest *)requestreturningResponse:(NSURLResponse **)response error:(NSError **)error这将返回一个您可以处理的 NSData 变量.重要提示:请记住在单独的线程中启动同步请求以避免阻塞 UI.异步:(void)start不要忘记设置您的 NSURLConnection 的委托来处理连接，如下所示:- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {[self.data setLength:0];}- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)d {[self.data appendData:d];}- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {[[[[UIAlertView alloc] initWithTitle:NSLocalizedString(@"Error", @"")消息:[错误本地化描述]代表:无cancelButtonTitle:NSLocalizedString(@"OK", @"")otherButtonTitles:nil] 自动释放] 显示];}- (void)connectionDidFinishLoading:(NSURLConnection *)connection {NSString *responseText = [[NSString alloc] initWithData:self.data encoding:NSUTF8StringEncoding];//用它做任何你想做的事[响应文本发布];}//如果需要，处理基本身份验证质询- (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge {NSString *用户名 = @"用户名";NSString *password = @"password";NSURLCredential *credential = [NSURLCredential credentialWithUser:username密码:密码持久性:NSURLCredentialPersistenceForSession];[[挑战发送者] useCredential:credential forAuthenticationChallenge:challenge];}I'm approaching iOS development and I'd like to have one of my first applications to perform a HTTP POST request.As far as I can understand, I should manage the connection which handles the request via a NSURLConnection object, which forces me to have a delegate object, which in turn will handle data events.Could someone please clarify the task with a practical example?I should contact an https endpoint sending authentication data (username and password) and getting back a plain text response. 解决方案 You can use NSURLConnection as follows:Set your NSURLRequest: Use requestWithURL:(NSURL *)theURL to initialise the request.If you need to specify a POST request and/or HTTP headers, use NSMutableURLRequest with(void)setHTTPMethod:(NSString *)method(void)setHTTPBody:(NSData *)data(void)setValue:(NSString *)value forHTTPHeaderField:(NSString *)fieldSend your request in 2 ways using NSURLConnection:Synchronously: (NSData *)sendSynchronousRequest:(NSURLRequest *)request returningResponse:(NSURLResponse **)response error:(NSError **)errorThis returns a NSData variable that you can process.IMPORTANT: Remember to kick off the synchronous request in a separate thread to avoid blocking the UI.Asynchronously: (void)startDon't forget to set your NSURLConnection's delegate to handle the connection as follows:- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response { [self.data setLength:0];}- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)d { [self.data appendData:d];}- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error { [[[[UIAlertView alloc] initWithTitle:NSLocalizedString(@"Error", @"") message:[error localizedDescription] delegate:nil cancelButtonTitle:NSLocalizedString(@"OK", @"") otherButtonTitles:nil] autorelease] show];}- (void)connectionDidFinishLoading:(NSURLConnection *)connection { NSString *responseText = [[NSString alloc] initWithData:self.data encoding:NSUTF8StringEncoding]; // Do anything you want with it [responseText release];}// Handle basic authentication challenge if needed- (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge { NSString *username = @"username"; NSString *password = @"password"; NSURLCredential *credential = [NSURLCredential credentialWithUser:username password:password persistence:NSURLCredentialPersistenceForSession]; [[challenge sender] useCredential:credential forAuthenticationChallenge:challenge];} 这篇关于iOS:如何执行 HTTP POST 请求?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！ 上岸，阿里云！
