文件下载(解决中文文件名下载乱码问题)(二)

针对“文件下载(解决中文文件名下载乱码问题)”出现的问题：在弹出的文件下载框选择“打开”不能正常打开文件。
下面的代码可解决此问题：

java 代码

<%@ page contentType="text/html;charset=utf-8" %>
<%@ page import = "java.util.*" %>
<%@ page import = "java.io.*" %>
<%@ page import = "java.net.*" %>
<%
//防止IE缓存
response.setHeader("pragma","no-cache");
response.setHeader("cache-control","no-cache");
response.setDateHeader("Expires",0);
//设置编码
request.setCharacterEncoding("UTF-8");

String fileName = request.getParameter("fileName");
//取到文件
File file = new File(application.getRealPath("/")+"upload/" + fileName);
response.reset();
//response.setContentType("application/octet-stream;charset=UTF-8");
response.setContentType("application/octet-stream;charset=GBK");//解决在弹出文件下载框不能打开文件的问题
//System.out.println(response.getCharacterEncoding());
//一定要对fileName进行encode
//response.addHeader("Content-Disposition", "attachment; filename=" + java.net.URLEncoder.encode(fileName, "UTF-8"));
response.addHeader("Content-Disposition", "attachment; filename=" + new String(fileName.getBytes("GBK"),"ISO8859-1"));//解决在弹出文件下载框不能打开文件的问题
response.setContentLength((int) file.length());

byte[] buffer = new byte[4096];
BufferedOutputStream output = null;
BufferedInputStream input = null;

// 写缓冲区：
try {
    output = new BufferedOutputStream(response.getOutputStream());
    input = new BufferedInputStream(new FileInputStream(file));

    int n = (-1);
    while ((n = input.read(buffer, 0, 4096)) > -1) {
        output.write(buffer, 0, n);
    }
    response.flushBuffer();
}
catch (Exception e) {
} // maybe user cancelled download
finally {
    if (input != null) input.close();
    if (output != null) output.close();
}
%>

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• 2007-11-09 13:41
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1 楼 pizza823 2010-08-19  

文件下载名虽然不是乱码了，但是文件内容为乱码？？
而且下载时会有空格截断问题，如何解决