iOS里加载https请求报错说服务器证书无效的解决办法

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NSURLConnectionDelegate

- (void)loadUnioPage:(UIWebView*)MobileLoadWebView
{
    NSURL *LoadURL = [NSURL URLWithString:self.confirm_url];
    NSURLRequest *request = [NSURLRequest requestWithURL:LoadURL cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:25];
    [NSURLConnection connectionWithRequest:request delegate:self];
    [MobileLoadWebView loadRequest:request];
}
- (void)connection:(NSURLConnection *)connection willSendRequestForAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge
{
    if ([challenge.protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust]) {
        [challenge.sender useCredential:[NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust] forAuthenticationChallenge:challenge];
        [challenge.sender continueWithoutCredentialForAuthenticationChallenge:challenge];
    }
}