文件下载

public void downLoadApplication(HttpServletRequest request, HttpServletResponse response) {
// 项目里路径 String path = request.getRealPath("/static/template/fineReduceApplication.docx");
try {
// path是指欲下载的文件的路径。
File file = new File("E://apache-tomcat-6.0.32.zip");
// 取得文件名。
String filename = file.getName();
// 取得文件的后缀名。
String ext = filename.substring(filename.lastIndexOf(".") + 1).toUpperCase();

// 以流的形式下载文件。
InputStream fis = new BufferedInputStream(new FileInputStream(file));
byte[] buffer = new byte[fis.available()];
fis.read(buffer);
fis.close();
// 清空response
response.reset();
// 设置response的Header
response.addHeader("Content-Disposition", "attachment;filename=" + new String(filename.getBytes()));
response.addHeader("Content-Length", "" + file.length());
OutputStream toClient = new BufferedOutputStream(response.getOutputStream());
response.setContentType("application/octet-stream");
toClient.write(buffer);
toClient.flush();
toClient.close();
} catch (Exception ex) {
ex.printStackTrace();
}

}