downloadfileaction.java

该项目采用Struts框架

package com.cattsoft.task.action;

import java.io.File;

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

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.DownloadAction;

public class DownloadFileAction extends DownloadAction {

	@Override
	protected StreamInfo getStreamInfo(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) throws Exception {
		String fileName = request.getParameter("file_name");
		String fileType = request.getParameter("file_type");
		String filePath = request.getSession().getServletContext().getRealPath("/");
		response.setHeader("Content-disposition","attachment; filename=" + fileName);
		File file = new File(filePath + fileName);
		return new FileStreamInfo(fileType,file);
	}
}