iOS HTTP Post：請求成功連接;什麼也沒有發生

Question

我想使用的用戶和密碼錶單POST請求，訪問web應用程序在其下方，使用戶不必滿山遍野或按下登錄鍵來訪問他們的webapps。據我NSLogs，連接DidReceiveResponse，ConnectionDidReceiveData和ConnectionDidFinishLoading，但我看到在模擬器沒有結果; 我去web視圖，它顯示了空單，等待我輸入信息...不是我想要的。我想繞過這種形式。什麼是/可能會丟失或在這裏公然錯誤？：

viewDidLoad中： ... USR，私服等之前*消息體中產生，等等

NSString *messageBody = [NSString stringWithFormat:@"UsernameFieldName=%@&PasswordFieldName=%@", usr, pW]; 

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

NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:appURL]; 
[theRequest setHTTPMethod:@"Post"]; 

[theRequest setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"]; 
NSLog(@"%@", messageBody); 

[theRequest setHTTPBody:[messageBody dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES]]; 

[theRequest addValue: messageBody forHTTPHeaderField:@"Content-Length"]; 
NSLog(@"%@", theRequest); 

[NSURLConnection connectionWithRequest: theRequest delegate:self]; 

連接方法：

- (void)connection:(NSURLConnection*)connection 
didReceiveResponse:(NSURLResponse*)response 
{ 
    NSLog(@"Connection DidReceiveResponse"); 

    webData = [[NSMutableData alloc] init]; 
} 

- (void)connection:(NSURLConnection*)connection didReceiveData:(NSData*)data 
{ 
    NSLog(@"ConnectionDidReceiveData"); 

    webData = [NSMutableData dataWithData:data]; 
} 

- (void)connectionDidFinishLoading:(NSURLConnection*)connection 
{ 
    NSLog(@"Connection Did Finish Loading"); 

    [HelpWebView loadData:webData 
       MIMEType:@"text/html" 
     textEncodingName:@"UTF-8" 
        baseURL:nil]; 
} 

以下是Sangony的貢獻，它接近一點，但還有其他要求得到t o表單下的web應用程序。

- (void)connection:(NSURLConnection *)connection willSendRequestForAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge 
{ 
    //KeychainItemWrapper *keychainItem = [[KeychainItemWrapper alloc] initWithIdentifier:@"key" accessGroup:nil]; 
    //NSString *usr = [keychainItem objectForKey:(__bridge id)(kSecAttrAccount)]; 
    //NSString *pW = [keychainItem objectForKey:(__bridge id)(kSecValueData)]; 

    if ([challenge previousFailureCount] == 0) { 
    NSLog(@"received authentication challenge"); 
    NSURLCredential *newCredential = [NSURLCredential credentialWithUser:@"?username" 
                   password:@"?password" 
                  persistence:NSURLCredentialPersistenceForSession]; 
//  NSURLCredential *newCredential = [NSURLCredential credentialWithUser:[NSString stringWithFormat:@"%@", usr] 
//                 password:[NSString stringWithFormat:@"%@", pW] 
//                persistence:NSURLCredentialPersistenceForSession]; 
    NSLog(@"Credential created"); 
    [[challenge sender] useCredential:newCredential forAuthenticationChallenge:challenge]; 
    NSLog(@"Responded to authentication challenge"); 
} 
    else { 
    NSLog(@"Authentication failure"); 
}} 

更新 我在這裏測試了上述方法： http://www.posttestserver.com/

的鍵和值是什麼，我需要爲我的形式。問題出在窗體/網站/服務器上。不知道該從哪裏出發。任何關於從哪裏開始尋找的建議都會很棒。

Answer 1

看看這個代碼：

- (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge 
{ 
if ([challenge previousFailureCount] == 0) { 
NSLog(@"received authentication challenge"); 
NSURLCredential *newCredential = [NSURLCredential credentialWithUser:@"?username" 
                  password:@"?password" 
                 persistence:NSURLCredentialPersistenceForSession]; 
NSLog(@"Credential created"); 
[[challenge sender] useCredential:newCredential forAuthenticationChallenge:challenge]; 
NSLog(@"Responded to authentication challenge");  
} 
else { 
NSLog(@"Authentication failure"); 
}