解决办法：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.

从iOS9起，新特性要求App访问网络请求，要采用 HTTPS 协议。
但是还是可以通过修改 plist 文件暂时可以允许 http 访问

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添加如下代码：

<key>NSAppTransportSecurity</key>
<dict>
<key>NSAllowsArbitraryLoads</key>
<true/>
</dict>

<key>NSAppTransportSecurity</key>

<dict>

<key>NSAllowsArbitraryLoads</key>

<true/>

</dict>

然后保存就可以了。

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