Asp.net直接保存文件到客户端(续)
使用昨天Asp.net直接保存文件到客户端 中的方法,经过我的反复测试,各式文档都运行完全正常。于是昨晚修改了现有代码,修改了下载方法,以解决一直困扰自己的窗口拦截问题。
早上本来还沾沾自喜,这下再也不用老跟客户解释为什么窗口会没掉了。可惜啊,人算不如天算,还是被MS给阴了。
早上客户就反映下载的文件全是乱码。立马在本机进行测试,OK,没问题。不信这个邪了,再同事的机器上试验,同样没问题。
#¥#¥%#¥%¥%……#¥%……¥%……—¥#¥%……#¥%……
我晕,应该是客户端的问题才是。只好让客户NetMeeting演示一下她的操作过程。下载-〉保存-〉打开。这么简单的流程,连白痴都不会做错吧?
天啊MS,见鬼了。@##$%$%^$#%%&^&%^&%^
正在郁闷之际,突然脑光一闪,终于发现不一样的地方,立马试验,果然如此!说到这里,真是要#@#$ Microsoft 了...
到底有什么区别呢?请看操作图:
各位看官应该看出不同之处了吧?如果还看不出来可是要打PP的哦---^_^
这件事情的罪魁祸首就是:
解决方法:使用lovecherry 的如何从注册表读取文件的ContentType 一文的方法
修正代码:
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/// <summary>
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/// 下载文件
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/// </summary>
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/// <param name="filename">文件物理地址</param>
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protected void DownloadFile(string filename)
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{
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string saveFileName = "test.xls";
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int intStart = filename.LastIndexOf("\\")+1;
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saveFileName = filename.Substring(intStart,filename.Length-intStart);
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System.IO.FileInfo fi=new System.IO.FileInfo(filename);
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string fileextname=fi.Extension;
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string DEFAULT_CONTENT_TYPE = "application/unknown";
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RegistryKey regkey,fileextkey;
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string filecontenttype;
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try
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{
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regkey=Registry.ClassesRoot;
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fileextkey=regkey.OpenSubKey(fileextname);
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filecontenttype=fileextkey.GetValue("Content Type",DEFAULT_CONTENT_TYPE).ToString();
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}
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catch
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{
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filecontenttype=DEFAULT_CONTENT_TYPE;
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}
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Response.Clear();
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Response.Charset = "utf-8";
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Response.Buffer= true;
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this.EnableViewState = false;
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Response.ContentEncoding = System.Text.Encoding.UTF8;
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Response.AppendHeader("Content-Disposition","attachment;filename=" + saveFileName);
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Response.ContentType=filecontenttype;
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Response.WriteFile(filename);
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Response.Flush();
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Response.Close();
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Response.End();
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}
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最后得出结论:要实现柚子Nan提出的能否不考虑文件的类型,直接把文件显示到浏览器(Response),有一种方法,让客户端都不要隐藏已知的扩展名,但是这种方法是无法适应大部分电脑使用者的(一般只有比较熟悉电脑的人才会这样做吧?客人,算了吧...到时候-------残念)