iOS WebView加载https 网址

1，普通的https请求 在这里我就不做阐述了，网上有很多相关文章，大家可以自己看看。

2，在webview中加载https的方法，webview默认请求方式目前不支持自签名证书的，

1>，支持自签名证书方式

- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{
_webView = webView;
//需要进行登录操作的时候
if (!_authenticated) {
_authenticated = NO;
_currentRequest = [self loadRequestWithURL:request.URL];
_currentConnection = [[NSURLConnection alloc]initWithRequest:_currentRequest delegate:self startImmediately:YES];
return NO;
}
return YES;
}

- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error
{
NSLog(@" webview加载失败 %@ ",error);
}

#pragma mark - NSURLConnectionDataDelegate
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
_authenticated = YES;
[_webView loadRequest:_currentRequest];
[connection cancel];
}

- (BOOL)connection:(NSURLConnection *)connection canAuthenticateAgainstProtectionSpace:(NSURLProtectionSpace *)protectionSpace
{
//服务器自签名证书
return [protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust];
}

- (void)connection:(NSURLConnection *)connection willSendRequestForAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge
{
NSLog(@" willSendRequestForAuthenticationChallenge ");
if (challenge.previousFailureCount == 0) {
_authenticated = YES;

//基于原始网站的证书签名 建立一个新的凭证
NSURLCredential *credential = [NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust];
[challenge.sender useCredential:credential forAuthenticationChallenge:challenge];
}
else {
[challenge.sender cancelAuthenticationChallenge:challenge];
}
}