本帖最后由 小强皮厚 于 2017-11-29 21:08 编辑
IE浏览器下载中文文件的时候采用的URL的编码. ØFirefox浏览器下载中文文件的时候采用的是Base64的编码. /** * 文件下载的Servlet */ public class DownloadServlet extends HttpServlet { private static final long serialVersionUID = 1L;
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // 1.接收参数 String filename = new String(request.getParameter("filename").getBytes("ISO-8859-1"),"UTF-8"); System.out.println(filename); // 2.完成文件下载: // 2.1设置Content-Type头 String type = this.getServletContext().getMimeType(filename); response.setHeader("Content-Type", type); // 2.3设置文件的InputStream. String realPath = this.getServletContext().getRealPath("/download/"+filename);
// 根据浏览器的类型处理中文文件的乱码问题: String agent = request.getHeader("User-Agent"); System.out.println(agent); if(agent.contains("Firefox")){ filename = base64EncodeFileName(filename); }else{ filename = URLEncoder.encode(filename,"UTF-8"); }
// 2.2设置Content-Disposition头 response.setHeader("Content-Disposition", "attachment;filename="+filename);
InputStream is = new FileInputStream(realPath); // 获得response的输出流: OutputStream os = response.getOutputStream(); int len = 0; byte[] b = new byte[1024]; while((len = is.read(b))!= -1){ os.write(b, 0, len); } is.close(); }
public static String base64EncodeFileName(String fileName) { BASE64Encoder base64Encoder = new BASE64Encoder(); try { return "=?UTF-8?B?" + new String(base64Encoder.encode(fileName .getBytes("UTF-8"))) + "?="; } catch (UnsupportedEncodingException e) { e.printStackTrace(); throw new RuntimeException(e); } }
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); }
}
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