How to view the downloaded document directly from the new tab?

i need to show my attached document on my received mail or some file(doc) which was located at server side, on separate new tab or window in browser. For example: in gmail if we got any mail with some attachment file like doc, their we can see two options like view and download. In my requirement i want that functionality when user had click on View link, the attached file will open 开发者_如何转开发on separate tab...... ru got my point friends.

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You need to create a server side page which will be presenting the document in html format. Note that this document will have never been downloaded to the client. It will be a regular server side page, like the rest of your application.

Regarding presentation of this page in a new tab or window, this is client side functionality. The closest you can get to opening a new tab is to use <a href="#" target="_blank">...</a>.