首先要在文件中设置这个参数：
（联网）

image.png

遵循这个代理

image.png

加上这俩个参数

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pragma mark - UIWebView delegate

   - (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:
   (NSURLRequest *)request navigationType:
     (UIWebViewNavigationType)navigationType
{
NSString *requestString = [[request URL] absoluteString];
DebugLog(@"requestString=====%@",requestString);

if (!_authenticated) {
    _authenticated = kNeverAuthenticate;
    
    _urlConnection = [[NSURLConnection alloc] initWithRequest:_request delegate:self];
    [_urlConnection start];
        return YES;
  } else if (!([requestString rangeOfString:ACTIVITY_FINISHED_KEYWORDS].location 
 == NSNotFound)) {
        NSArray *components = [requestString componentsSeparatedByString:@"#?"];
        for (NSString *key in components)
        {
            if ([key rangeOfString:ACTIVITY_FINISHED_KEYWORDS].location != 
              NSNotFound)
             {
                NSString *actMatId = [[key componentsSeparatedByString:@"="] lastObject];
                [[NSNotificationCenter defaultCenter] 
             postNotificationName:ActivityMatFinishedNotification object:actMatId];
                break;
            }
              }
             return NO;
              }
           return YES;
         }

在这里拦截加载的URL的协议，如果是https则去获取信任。
#pragma mark NURLConnection 代理方法
- (void)connection:(NSURLConnection *)connection
didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge{
NSLog(@"WebController 已经得到授权正在请求 NSURLConnection");

                if ([challenge previousFailureCount] == 0){
             _authenticated = kTryAuthenticate;
    
       NSURLCredential *credential = [NSURLCredential 
       credentialForTrust:challenge.protectionSpace.serverTrust];
    
    [challenge.sender useCredential:credential forAuthenticationChallenge:challenge];
    
       } else{
             [[challenge sender] cancelAuthenticationChallenge:challenge];
         }
    }
         - (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{
NSLog(@"WebController 已经收到响应并通过了 NSURLConnection请求");

_authenticated = kTryAuthenticate;
[self.webView loadRequest:_request];
[_urlConnection cancel];
      }

        - (BOOL)connection:(NSURLConnection *)connection 
            canAuthenticateAgainstProtectionSpace:(NSURLProtectionSpace *)protectionSpace{

     return [protectionSpace.authenticationMethod 
      isEqualToString:NSURLAuthenticationMethodServerTrust];
  }

       -(void)webViewDidStartLoad:(UIWebView *)webView{
           [_progressLayer startLoad];
            [SVProgressHUD showImage:[UIImage imageNamed:@"Nodata_McLearning"] 
            status:@"数据正在加载"];
            DebugLog(@"开始加载");
         }

            -(void)webViewDidFinishLoad:(UIWebView *)webView{
                    DebugLog(@"加载完成");
                        [[NSUserDefaults standardUserDefaults] setInteger:0 
                       forKey:@"WebKitCacheModelPreferenceKey"];
                     [_progressLayer finishedLoad];
                      [SVProgressHUD dismissWithDelay:0.5];
                if ([self.webView canGoBack]) {
              self.title = [webView 
          stringByEvaluatingJavaScriptFromString:@"document.title"];
          } else  {  if (!self.titleStr) {
        self.title = [webView stringByEvaluatingJavaScriptFromString:@"document.title"];
             }
    else
    {
        self.title = _titleStr;
    }
}
  NSString *requestString = [[self.webView.request URL] absoluteString];
if([requestString rangeOfString:@"receiveMsgView.do"].location !=NSNotFound){
    self.isMsg=YES;
}
else{
    self.isMsg=NO;
}

self.context = [self.webView valueForKeyPath:@"documentView.webView.mainFrame.javaScriptContext"];

//放大html里面的图片
[self loadPhoto:self.context];

//返回到上一个页面
[self goToHomePage:self.context];

//新版的对接方法
[self Pay:self.context];

//积分商城的对接方法
[self doPay:self.context];
[self doOrder:self.context];

//社会化分享
[self social:self.context];

//资料下载
[self downMaterial:self.context];

//课程播放
[self courseVideoPlay:self.context];

//课程下载
[self downloadCourse:self.context];

    }

具体链接