Struts2实现文件的下载

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直接看代码：

下载
文件入口：

<%@ page language="java" contentType="text/html; charset=utf-8"    pageEncoding="utf-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title>Insert title here</title></head><body>    <a href="download.action?fileName=<%=java.net.URLEncoder.encode("测试用的RAR.rar","utf-8").toString()                .replace("%","_")%>">测试用的Rar.rar文件</a>    <a href="download.action?fileName=abc.rar">abc.rar</a></body></html>

下载的action:

import java.io.File;import java.io.FileInputStream;import java.io.InputStream;import java.net.URLDecoder;import org.apache.struts2.ServletActionContext;/** * 实现文件下载的action * @author acer * */public class DownLoad {private String fileName = "";public String getFileName() {return fileName;}public void setFileName(String fileName) {this.fileName = fileName;}public InputStream getDownloadFile() throws Exception {fileName = fileName.replace("_", "%");fileName = URLDecoder.decode(fileName, "utf-8");System.out.println(fileName);ServletActionContext.getResponse().setContentType("application/x-msdownload");FileInputStream fis = new FileInputStream(new File(ServletActionContext.getRequest().getRealPath("\\upload")+"\\"+fileName));fileName = new String(fileName.getBytes("UTF-8"),"iso-8859-1");ServletActionContext.getResponse().setHeader("Content-Disposition", "attachment;filename="+fileName);return fis;}public String execute(){return "success";}}

配置文件：

<action name="download" class="DownLoad"><result name="success" type="stream"><param name="inputName">downloadFile</param><param name="bufferSize">1000000</param></result></action>

这样就可以实现文件的下载了。

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