我已经用谷歌搜索这个问题几个小时了，我似乎找不到解决方案。
我学习的最后一个教程是本教程，它解释了如何通过不受信任的 SSL 连接（在本例中为自签名证书）发送 JSON 请求。
简而言之，到目前为止我尝试过的代码是这样的：
此方法检查令牌是否对我的 Web API 有效：
-(BOOL)linked
{
if([self token] == nil)
{
return NO;
}else
{
NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"%@?token=%@&object=User&action=check_authorized", SPAtajosApiLink, [self token], nil]];
NSMutableURLRequest *req = [NSMutableURLRequest requestWithURL:url];
[req setHTTPMethod:@"POST"];
NSLog(@"%@", req);
[req setHTTPBody: [mandatoryParameters dataUsingEncoding: NSUTF8StringEncoding]];
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:req delegate:self];
[connection start];
NSDictionary *validity = [NSJSONSerialization
JSONObjectWithData:[NSURLConnection sendSynchronousRequest:req returningResponse:nil error:nil]
options:NSJSONReadingMutableContainers
error:nil];
NSLog(@"RESPONSE LINKED %@ %@", validity[@"code"], validity[@"message"]);
}
return YES;
}
我已经实现了 NSURLConnectionDelegate 方法如下：
- (BOOL)connection:(NSURLConnection *)connection canAuthenticateAgainstProtectionSpace:(NSURLProtectionSpace *)protectionSpace
{
return [protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust];
}
- (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge
{
if ([challenge.protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust])
{
NSLog(@"API LINK %@", challenge.protectionSpace.host);
if ([challenge.protectionSpace.host isEqualToString:SPAtajosApiLink])
{
[challenge.sender useCredential:[NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust] forAuthenticationChallenge:challenge];
}
}
[challenge.sender continueWithoutCredentialForAuthenticationChallenge:challenge];
}
然而，我的应用程序总是崩溃并显示以下消息：
2013-10-15 22:48:55.382 Atajos[733:60b] { URL:
https://MY_API_URL/www/?token=657fd6c02b3ba439e69b060f7f7680cc&object=User&action=check_authorized} 2013-10-15 22:48:58.045 Atajos[733:3b17] NSURLConnection/CFURLConnection HTTP 加载失败（kCFStreamErrorDomainSSL，-9813）2013- 10-15 22:48:58.049 Atajos[733:60b] * Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'data parameter is nil' * First throw call stack: (0x2ec2de8b 0x38f286c7 0x2ec2ddcd 0x2f5b5d77 0x5df9d 0x62395 0x31433025 0x3141e631 0x313b8be7 0x313b7edd 0x3141dca1 0x3389976d 0x33899357 0x2ebf877f 0x2ebf871b 0x2ebf6ee7 0x2eb61541 0x2eb61323 0x3141cf43 0x314181e5 0x62191 0x39421ab7）libc++abi 未捕获异常类型。
好的，那么NSData，想必NSJSONSerialization中的参数是NULL。问题，为什么？
奇怪的是，我有一个类似的代码，它实际上与 UIWebView 通过不受信任的 SSL 与网站交互：
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{
//Need to rebuild base URL. Otherwise I get the parameters which will always fail the check.
NSURL *requestUrl = [request URL];
NSString *basicPathString = [NSString stringWithFormat:@"%@://%@:%@%@", requestUrl.scheme, requestUrl.host, requestUrl.port, requestUrl.path];
NSLog(@"%@", basicPathString);
if([basicPathString isEqualToString:SPAtajosLoginLink])
{
__block NSDictionary *jsonResponse = [NSJSONSerialization JSONObjectWithData:[NSData dataWithContentsOfURL:request.URL.absoluteURL]
options:NSJSONReadingMutableContainers
error:nil];
NSLog(@"Auth token is %@", jsonResponse[@"token"]);
[self dismissViewControllerAnimated:YES completion:^{
if([jsonResponse[@"code"] isEqualToNumber:[NSNumber numberWithInt:200]])
{
[[PDKeychainBindings sharedKeychainBindings] setObject:jsonResponse[@"token"]
forKey:@"com.shortcutpublicity.ios.atajos.userAccessToken"];
}else
{
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:NSLocalizedString(@"No Se Pudo Autenticar", @"Error 500 title")
message:NSLocalizedString(@"Se ha producido un error interno del servidor (500). Por favor, trata de nuevo más tarde.", @"Error describing error 500")
delegate:nil
cancelButtonTitle:NSLocalizedString(@"Aceptar", @"Accept") otherButtonTitles:nil];
[alertView show];
}
}];
}else {
//--------------THIS IS THE RELEVANT PART------------
BOOL result = _Authenticated;
if (!_Authenticated)
{
_FailedRequest = request;
NSURLConnection *trash = [[NSURLConnection alloc] initWithRequest:request delegate:self];
if(trash)
{
NSLog(@"Allocated succesfully.");
}
}
return result;
}
return YES;
}
-(void)connection:(NSURLConnection *)connection willSendRequestForAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge {
if ([challenge.protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust]) {
NSURL* baseURL = [NSURL URLWithString:SPatajosAuthLink];
if ([challenge.protectionSpace.host isEqualToString:baseURL.host]) {
NSLog(@"trusting connection to host %@", challenge.protectionSpace.host);
[challenge.sender useCredential:[NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust] forAuthenticationChallenge:challenge];
} else
NSLog(@"Not trusting connection to host %@", challenge.protectionSpace.host);
}
[challenge.sender continueWithoutCredentialForAuthenticationChallenge:challenge];
}
-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)pResponse {
_Authenticated = YES;
[connection cancel];
[_webView loadRequest:_FailedRequest];
}
我已经尝试调整此代码以与 WebView 一起使用，但我没有任何运气来适应将它与 NSURLConnection 一起使用。
老实说，我不太确定我知道这些变通办法是如何工作的。我一直在窃取并试图修改其他人的代码，但无济于事。我查看了 NSURLConnection 和 NSURLRequest 文档，但无法解决这些问题。请帮帮我。