XML解析在iphone与认证url

Question

我正在做xml解析，而我的url是认证url与用户名和密码。

当我把这个url输入浏览器时，它会问我登录的用户名和密码。

我想在iphone中使用NSXMLParser解析这个url。

对于解析，我使用下面的代码，但对我来说，它是返回一个parseErrorOccurred错误。

NSString *UploadCardDesign=kLOGIN_URL;
NSMutableURLRequest *request = [[[NSMutableURLRequest alloc]initWithURL:[NSURL URLWithString:UploadCardDesign]] autorelease];
[request setHTTPMethod: @"GET"];
[request setHTTPBody:nil]; 
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
//NSString *strRequ=[[NSString alloc] initWithData:returnData encoding:nsen]
NSString *data=[[NSString alloc]initWithData:returnData encoding:NSUTF8StringEncoding];

解析:

xmlParser = [[NSXMLParser alloc] initWithData:returnData];
[xmlParser setDelegate:self];
[xmlParser parse];

请帮助我做同样的或建议我做好的结果

Answer 1

实现认证委托函数....

- (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge {
 if ([challenge previousFailureCount] == 0)
 {
  NSLog(@"received authentication challenge");
  NSURLCredential *newCredential;
  newCredential=[NSURLCredential credentialWithUser:@"root"
             password:@"rootpassword"
             persistence:NSURLCredentialPersistenceForSession];

  NSLog(@"credential created");
  [[challenge sender] useCredential:newCredential forAuthenticationChallenge:challenge];
  NSLog(@"responded to authentication challenge");
 }
 else
 {
  NSLog(@"previous authentication failure");
  UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Authentication Failure" 
              message:@"Website did not accept the username and password."
                delegate:nil
             cancelButtonTitle:@"OK" 
             otherButtonTitles:nil];
  [alert show];
  [alert release];
 }
}