@RequestMapping("/download")
public void downloadFile(HttpServletRequest request, HttpServletResponse response) throws IOException {
String filePath = ServletRequestUtils.getStringParameter(request, "filePath", ""); //
String fileName = ServletRequestUtils.getStringParameter(request, "fileName", ""); //
String destUrl = filePath;
String fileFormat = filePath.substring(filePath.lastIndexOf("."));
String name = fileName.trim() + fileFormat;
// 建立链接
URL url = new URL(destUrl);
HttpURLConnection httpUrl = (HttpURLConnection) url.openConnection();
// 连接指定的资源
httpUrl.connect();
// 获取网络输入流
BufferedInputStream bis = new BufferedInputStream(httpUrl.getInputStream());
// // 清空response
// response.reset();
// response.setContentType("application/x-msdownload");
request.setCharacterEncoding("UTF-8");
response.setContentType("application/octet-stream; charset=utf-8");
response.setContentType("application/force-download");// 设置强制下载不打开
response.addHeader("Content-Disposition", "attachment; filename=" + java.net.URLEncoder.encode(name, "UTF-8"));
ServletOutputStream out = response.getOutputStream();
byte[] buf = new byte[1024];
if (destUrl != null) {
BufferedInputStream br = bis;
int len = 0;
while ((len = br.read(buf)) > 0) {
out.write(buf, 0, len);
}
br.close();
}
out.flush();
out.close();
}
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