我正在尝试创建一个基于UIWebView的应用程序。其主要目的是使用NTLM或基本身份验证为少数网站提供身份验证，而无需用户在更改密码时为每个网站输入用户名/密码（网站共享用户/密码数据库）。
为了做到这一点，我“覆盖”加载UIWebView的页面数据，这样我就可以拦截HTTP响应代码并在每次检测到{时都要求用户输入密码{1}}回复。
我已设置401 Unauthorized来处理请求：
NSURLConnectionDataDelegate我的@interface LPURLConnectionDelegate : NSObject<NSURLConnectionDataDelegate>
{
UIWebView* _webView;
NSMutableURLRequest* _request;
NSURLConnection* _connection;
NSString* _encoding;
NSString* _mimeType;
NSMutableData* _data;
}
- (LPURLConnectionDelegate*) initWithWebView:(UIWebView *)webView;
- (void) loadPageWithRequest: (NSURLRequest*)request;
- (void)connection:(NSURLConnection *)connection willSendRequestForAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge;
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error;
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response;
- (BOOL)connectionShouldUseCredentialStorage:(NSURLConnection *)connection;
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data;
- (void)connectionDidFinishLoading:(NSURLConnection *)connection;
@end
@implementation LPURLConnectionDelegate
- (void) loadPageWithRequest: (NSURLRequest*)request
{
_request = [request mutableCopy];
if(!_data)
{
_data = [NSMutableData dataWithCapacity:0];
[_data retain];
}
[_data setLength:0];
if(_connection)
{
[_connection cancel];
[_connection release];
_connection = nil;
}
_connection = [[NSURLConnection alloc] initWithRequest:_request delegate:self startImmediately:YES];
}
- (void)connection:(NSURLConnection *)connection willSendRequestForAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge
{
LPAppDelegate* delegate = [LPAppDelegate getInstance];
NSURLCredential* credential = [NSURLCredential credentialWithUser:[delegate getUsername] password:[delegate getPassword] persistence:NSURLCredentialPersistenceForSession];
[[challenge sender] useCredential:credential forAuthenticationChallenge:challenge];
}
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
//handle connection failed
}
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
NSLog(@"Connection did receive response");
NSHTTPURLResponse* httpResponse = (NSHTTPURLResponse*)response;
_mimeType = [httpResponse MIMEType];
_encoding = [httpResponse textEncodingName];
//handle status - if the status is 401, the connection is canceled and the user is asked for his new password
}
- (BOOL)connectionShouldUseCredentialStorage:(NSURLConnection *)connection
{
return YES;
}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
[_data appendData:data];
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
[_webView loadData:_data MIMEType:_mimeType textEncodingName:_encoding baseURL:[_request URL]];
}
@end
看起来像这样：
UIWebViewDelegate基本上，我要做的是告诉@interface LPWebViewDelegate : NSObject<UIWebViewDelegate>
- (void)webViewDidStartLoad:(UIWebView *)webView;
- (void)webViewDidFinishLoad:(UIWebView *)webView;
- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error;
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType;
@end
@implementation LPWebViewDelegate
- (void) webViewDidStartLoad:(UIWebView *)webView
{
}
- (void) webViewDidFinishLoad:(UIWebView *)webView
{
//handle success
}
- (BOOL) webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{
LPURLConnectionDelegate* connectionDelegate = [[LPURLConnectionDelegate alloc] initWithWebView:webView];
[connectionDelegate loadPageWithRequest:request];
return NO;
}
- (void) webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error
{
//handle fail
}
@end
不要自己加载任何页面，让我处理加载页面的请求。当请求完成并且用户通过身份验证时，我正在尝试使用UIWebView方法设置数据。
此处的问题是，在设置UIWebView::loadData:MIMEType:textEncodingName:baseUrl的{{1}}数据后，UIWebView会将页面集重新加载为NSURLConnectionDataDelegate（至少在模拟器中 - 我还没有尝试过实际设备上的代码。
是否有人知道如何将数据设置为UIWebView以便不重新加载页面（*）？
*）我知道在baseURL检查身份验证（或并行）之后我可以让UIWebView加载页面，但我试图避免请求页面每页标题两次。
注意：代码不完整，我已经提取了我认为是此问题最相关的部分。