对于iOS9，Apple做出了一个激进的决定iOS 9，禁用来自iOS应用程序的所有不安全的HTTP流量，作为应用传输安全（ATS）。

For the iOS9, Apple made a radical decision with iOS 9, disabling all unsecured HTTP traffic from iOS apps, as a part of App Transport Security (ATS).

要简单地禁用ATS，您可以通过打开 Info.plist 来执行此步骤>，并添加以下行：

To simply disable ATS, you can follow this steps by open Info.plist, and add the following lines:

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