什么是从服务器下载文件的最佳方式 [英] What is the best way to download file from server

问题描述

我有我需要从服务器（ASP.NET）到客户端下载一个动态生成的文件有趣的任务。在客户端，这只是的JavaScript（jQuery的）和客户机能够产生大量的参数来定制数据是如何导出。

I have interesting task which requires me to download a dynamically generated file from a server (ASP.NET) to the client. On the client side it is just JavaScript (jQuery) and the client is able to generate a lot of parameters to customize how the data is exported.

什么是做从服务器下载文件的最好方法？我应该使用WCF服务，如什么是描述<一个href=\"http://www.$c$cproject.com/Articles/166763/WCF-Streaming-Upload-Download-Files-Over-HTTP\">here或如这个？

What is the best way to do download the file from the server? Should I use a WCF service such as what is described here or simple page like this one?

我不知道如何下载文件无需重新加载页面（我不知道，$阿贾克斯将在这种情况下工作）。可能有人请给我一些关于这个论题的方向？谢谢。

I don't know how to download a file without reloading the page (I'm not sure that $.ajax will work in this case). Could someone please give me some direction on this topic? Thanks.

推荐答案

首先，你可以从一个处理程序创建文件 ashx的

First you can create the file from a handler .ashx

让说，你有在 download.ashx 下载文件，你有一些参数应用到您的javascript，例如通过 download.ashx ？P1 = 8827＆放大器; P2 = 8831 来知道你要创建什么

Let say that you have the file for downloading at download.ashx and you have some parametres to pass from your javascript, eg download.ashx?p1=8827&p2=8831 to know what you going to create.

然后在你的JavaScript，你可以简单的做一个重定向为

Then on your javascript you simple can make a redirect as

window.location = "download.ashx?p1=8827&p2=8831";

或替代，你可以使用 window.open 为做同样认为

or alternative you can use the window.open for do the same think

window.open("download.ashx?p1=8827&p2=8831");

和您的文件将开始下载。

and your file will start the download.

只要确保你已经设置附件的标题，在你的句柄如正确的contentType：

Just make sure that you have set the header of attachment, and the correct contenttype on your handle eg:

  HttpContext.Current.Response.ContentType = "application/octet-stream";
  HttpContext.Current.Response.AddHeader("Content-Disposition", 
                    "attachment; filename=" + SaveAsThisFileName);

简单明了，经过测试和工作。

Simple and clear, both tested and working.

另外你可能感兴趣的这个答案：如何处理错误

Also you may interesting on this answer: How to handle errors.

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