实现文件的下载
下载文件。jsp
<%...@ page language="java" pageEncoding="utf-8"%><%...@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean" %><%...@ taglib uri="http://struts.apache.org/tags-html" prefix="html" %><%...@ taglib uri="http://struts.apache.org/tags-logic" prefix="logic" %><%...@ taglib uri="http://struts.apache.org/tags-tiles" prefix="tiles" %><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html:html lang="true"> <head> <html:base /> <title>下载</title> </head> <body> <html:form action="download.do" method="post"> <html:submit value="下载文件"></html:submit> </html:form> </body></html:html>[u][/u]
action
package com.struts.action;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import java.io.UnsupportedEncodingException;import java.net.URLEncoder;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.apache.struts.action.Action;import org.apache.struts.action.ActionForm;import org.apache.struts.action.ActionForward;import org.apache.struts.action.ActionMapping;import com.struts.form.DownloadForm;public class DownloadAction extends Action ...{ public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws UnsupportedEncodingException ...{ DownloadForm d = (DownloadForm) form; InputStream is=null; OutputStream os=null; String path = "JAVA问题.doc"; String newpath=URLEncoder.encode(path,"utf-8"); byte[] b=new byte[1024]; int i=0; try ...{ is = new FileInputStream("d:/"+path); os = response.getOutputStream(); /**//*在页面上弹出一个下在窗口*/ response.setContentType("application/x-msdownload"); /**//*设置报头信息，弹出窗口中显示的文件名 newpath*/ response.setHeader("Content-Disposition", "Disposition; filename="+newpath); /**//*具体的输入输出流操作*/ while((i=is.read(b))!=-1)...{ os.write(b, 0, i); i=0; } os.flush(); } catch (IOException e) ...{ // TODO Auto-generated catch block e.printStackTrace(); }finally...{ try ...{ os.close(); is.close(); } catch (IOException e) ...{ // TODO Auto-generated catch block e.printStackTrace(); } } return null; }}