javaweb Servlet 下载文件
public class DownServlet extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
String realPath = "D:\\Java\\javaweb-02-servlet\\downFileServlet\\src\\main\\resources\\1.png";
System.out.println("下载的路径:" + realPath);
String fileName = realPath.substring(realPath.lastIndexOf("\\") + 1);
resp.setHeader("Content-Disposition","attachment;filename="+URLEncoder.encode(fileName,"UTF-8"));
FileInputStream in = new FileInputStream(realPath);
int len = 0;
byte[] buffer = new byte[1024];
ServletOutputStream out = resp.getOutputStream();
while ((len=in.read(buffer))>0){
out.write(buffer,0,len);
}
in.close();
out.close();
}
}