執行下面代碼
[self.webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.bing.com"]]];
webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error打印出來的的錯誤如下
1 [6587:75627] NSURLConnection finished with error - code -1022 2 [6587:75574] Error Domain=NSURLErrorDomain Code=-1022 "The resource could not be loaded because the App Transport Security policy 3 requires the use of a secure connection." UserInfo={NSUnderlyingError=0x600000641f50 4 {Error Domain=kCFErrorDomainCFNetwork Code=-1022 "The resource could not be loaded because the App Transport Security policy requires 5 the use of a secure connection." UserInfo={NSErrorFailingURLStringKey=http://www.bing.com/, 6 NSLocalizedDescription=The resource could not be loaded because the App Transport Security policy requires the use of a secure connection., 7 NSErrorFailingURLKey=http://www.bing.com/}}, NSErrorFailingURLStringKey=http://www.bing.com/, NSErrorFailingURLKey=http://www.bing.com/, 8 NSLocalizedDescription=The resource could not be loaded because the App Transport Security policy requires the use of a secure connection.}
解決方案很簡單:
URLString必須使用https的請求webview就能正常顯示了
但后來發現要加載http://localhost:8080然后悲劇了,看來還是要研究一下具體機制了,在XCode 9就會出現錯誤中提示了很明顯的信息
The resource could not be loaded because the App Transport Security policy
去百度一下ATS policy,就可以知道很詳細的答案了,在SupportFiles->info.plist文件里面添加下面屬性就好了,有直接的選項,不需要自己填寫
done!