查考網上的代碼寫了一個下載xls檔案到用戶端的jsp頁面，只要將伺服器的檔案地址傳給這個jsp頁面就可以實現下載檔案到用戶端了。
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("沒有檔案");
- return;
- }
- System.out.println("檔案名稱為："+file);
- os = response.getOutputStream();
- response.setHeader("content-disposition", "attachment;filename=" + file);
- response.setContentType("application/vnd.ms-excel");//此項內容隨檔案類型而異
- 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("出錯");
- } 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">
- 冷山sky_snow
- </option>
- </select>
- <input type="submit"/>
- </form>
- </html>
