30초 만

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URLEncoder;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.util.FileCopyUtils;
import org.springframework.web.servlet.view.AbstractView;

public class FileDownloadView extends AbstractView {
 public FileDownloadView() {
  setContentType("application/download; charset=utf-8");
 }

 @Override
 protected void renderMergedOutputModel(Map<String, Object> model,
   HttpServletRequest request, HttpServletResponse response)
   throws Exception {
  File file = (File) model.get("downloadFile");
  response.setContentType(getContentType());
  response.setContentLength((int) file.length());
  String userAgent = request.getHeader("User-Agent");
  boolean ie = userAgent.indexOf("MSIE") > -1;
  String fileName = null;
  if (ie) {
   fileName = URLEncoder.encode(file.getName(), "utf-8");
  } else {
   fileName = new String(file.getName().getBytes("utf-8"),
     "iso-8859-1");
  }
  response.setHeader("Content-Disposition", "attachment; filename=\""
    + fileName + "\";");
  response.setHeader("Content-Transfer-Encoding", "binary");
  OutputStream out = response.getOutputStream();
  FileInputStream fis = null;
  try {
   fis = new FileInputStream(file);
   FileCopyUtils.copy(fis, out);
  } finally {
   if (fis != null)
    try {
     fis.close();
    } catch (IOException ex) {
    }
  }
  out.flush();
 }
}