执行下面代码
[self.webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.bing.com"]]];
webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error打印出来的的错误如下
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.}
解决方案很简单:
URLString必须使用https的请求webview就能正常显示了
但后来发现要加载http://localhost:8080然后悲剧了,看来还是要研究一下具体机制了,在XCode 9就会出现错误中提示了很明显的信息
The resource could not be loaded because the App Transport Security policy
去百度一下ATS policy,就可以知道很详细的答案了,在SupportFiles->info.plist文件里面添加下面属性就好了,有直接的选项,不需要自己填写
done!