//1. UIWebView 无法显示加载的url,浏览器可以打开
//报错如下UIWebView error 101
//解决:
UIWebView *_webView;
NSString *_requestURL;
NSString *encodedString = [_requestURL stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSURL *weburl = [NSURL URLWithString:encodedString];
[_webView loadRequest:[NSURLRequest requestWithURL:weburl]];