java web 下載檔案 瀏覽器彈出下載框
前端js檔案:window.open("feeWarning/excelQfAll");//訪問後臺springmvc中的excelQfAll方法得到下載的資源
採用的springmvc框架
後臺java檔案:
public void excelQfAll(HttpServletRequest request,HttpServletResponse response) {
String filename=request.getSession().getServletContext().getRealPath("/static/email/");
String filenameZip=filename+"\\email.zip";
try {
response.setContentType("application/x-execl");
response.setHeader("Content-Disposition", "attachment;filename=" + new String(("email.zip").getBytes(), "UTF-8"));
//讀取檔案
InputStream in = new FileInputStream(filenameZip);
ServletOutputStream outputStream = response.getOutputStream();
//寫檔案
int b;
while((b=in.read())!= -1)
{
outputStream.write(b);
}
in.close();
outputStream.close();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}