https访问证书问题

#pragma mark-NSURLConnectionDelegate
- (BOOL)connection:(NSURLConnection *)connection canAuthenticateAgainstProtectionSpace:(NSURLProtectionSpace *)protectionSpace
{
    NSLog(@"处理证书");
    return [protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust];
}

- (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge
{
    if ([challenge.protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust]) {
        [challenge.sender useCredential:[NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust] forAuthenticationChallenge:challenge];
    } else {
        [challenge.sender cancelAuthenticationChallenge:challenge];
    }
}

#pragma mark-NSURLConnectionDataDelegate
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data

{
    //请求获取的数据
     NSLog(@"%@", [NSJSONSerialization JSONObjectWithData:data options:(NSJSONReadingMutableContainers) error:nil]);
}

  [NSURLConnection sendAsynchronousRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"https://chanyouji.com/api/trips/featured.json?page=1"]] queue:[NSOperationQueue currentQueue] completionHandler:^(NSURLResponse * response, NSData * data, NSError * connectionError) {
        NSLog(@"%@", [NSJSONSerialization JSONObjectWithData:data options:(NSJSONReadingMutableContainers) error:nil]);
    }];