python 访问网址下载（浏览器打开另存为对话框）

一.python 函数返回式下载，话不多说上代码

　　

def xxx(request):
　　filename=''

　　fp = open(filename,'rb')
　　mydata = fp.read()
　　fp.close()
response = HttpResponse(mydata, mimetype='application/octet-stream')
response['Content-Disposition'] = 'attachment; filename="%s"'%filename.split('/')[-1]
return response

直接读取所要下载内容，response 文件内容和要保存的文件名就ok.

二.字段解析

1. disposition := "Content-Disposition" ":"
2.  
   disposition-type
3.  
   *(";" disposition-parm)
4.  
   disposition-type := "inline"
5.  
   / "attachment"
6.  
   / extension-token
7.  
   ; values are not case-sensitive
8.  
   disposition-parm := filename-parm / parameter
9.  
   filename-parm := "filename" "=" value;

Content-Disposition属性有两种类型：inline 和 attachment inline ：将文件内容直接显示在页面 attachment：弹出对话框让用户下载具体例子：

1.  
   Content-Type: image/jpeg   可选
2.  
   Content-Disposition: inline;filename=hello.jpg
3.  
   Content-Description: just a small picture of me

在页面内打开代码：

1.  
   File file = new File("rfc1806.txt");
2.  
   String filename = file.getName();
3.  
   response.setHeader("Content-Type","text/plain");
4.  
   response.addHeader("Content-Disposition","inline;filename=" + new String(filename.getBytes(),"utf-8"));
5.  
   response.addHeader("Content-Length","" + file.length());

弹出保存框代码：

1.  
   File file = new File("rfc1806.txt");
2.  
   String filename = file.getName();
3.  
   response.setHeader("Content-Type","text/plain");
4.  
   response.addHeader("Content-Disposition","attachment;filename=" + new String(filename.getBytes(),"utf-8"));
5.  
   response.addHeader("Content-Length","" + file.length());

   python