StumbleUpon is preparing to launch a shortURL service (a web service that provides short aliases for redirection of long URLs, like TinyURL or Bit.ly) in the next couple of weeks called su.pr.

几周以后，StumbleUpon公司将推出名为su.pr的URL缩短服务（一种提供指向长URL的临时短URL地址的网络服务，例如TinyURL和Bit.ly等）。

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You publish your content on an ordinary Web server, then connect it to your PURL with HTTP redirection.

可以将内容发布在普通的Web服务器上，然后用http重定向连接到PURL。

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Since Ajax prevents URL redirection, you need to invoke the web service from the application server.

因为Ajax不允许UR l重定向，所以需要从应用服务器调用Web服务。

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