tomcat 发布项目 test的 webroot/upload目录下有文件 test.xml
现在要从java中实现 从服务器目录下把文件下载到本机上， 本人刚入行， 求帮助代码怎么实现
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- Java code
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%> <%@ page import="java.io.*" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <link href="styles/basic.css" rel="stylesheet" type="text/css" /> <title>download</title> </head> <% response.setCharacterEncoding("gb2312"); request.setCharacterEncoding("gb2312"); if (request.getParameter("file") != null) { OutputStream os = null; FileInputStream fis = null; try { String file = request.getParameter("file"); if (!(new File(file)).exists()) { System.out.println("没有文件"); return; } System.out.println("文件名为："+file); os = response.getOutputStream(); response.setHeader("content-disposition", "attachment;filename=" + file); response.setContentType("application/vnd.ms-excel");//此项内容随文件类型而异 byte temp[] = new byte[1000]; fis = new FileInputStream(file); int n = 0; while ((n = fis.read(temp)) != -1) { os.write(temp, 0, n); } } catch (Exception e) { out.print("出错"); } finally { if (os != null) os.close(); if (fis != null) fis.close(); } out.clear(); out = pageContext.pushBody(); } %> <form action="" method="post"> <select name="file"> <option value="D://test//test.xls"> cccc </option> </select> <input type="submit"/> </form> </html>