iOS获取http://数据时会报如下错误：App Transport Security has blocked a cleartext HTTP (http://) resource load since it is insecure. Temporary exceptions can be configured via your app's Info.plist file.

可以直接使用Source Code形式打开Info.plist，添加如下配置:

<key>NSAppTransportSecurity</key>

<dict>

    <key>NSAllowsArbitraryLoads</key>

    <true/>

</dict>