使用Xcode7 出现" 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."
在iOS9 中，苹果将原http协议改成了https协议，使用 TLS1.2 SSL加密请求数据
解决方法：
在info.plist 加入key
<key>NSAppTransportSecurity</key> <dict> <key>NSAllowsArbitraryLoads</key> <true/> </dict>
HTTP (http://) resource load since it is insecure.
原文：http://www.cnblogs.com/designyshy/p/4872278.html