jsp實現從服務器下載xls文件到客戶端的方法

2024-09-05 00:22:24

字體：大中小

來源：轉載

供稿：網友

這篇文章主要介紹了jsp實現從服務器下載xls文件到客戶端的方法,以完整實例形式較為詳細的分析了jsp文件下載的相關實現技巧,具有一定參考借鑒價值,需要的朋友可以參考下

本文實例講述了jsp實現從服務器下載xls文件到客戶端的方法。分享給大家供大家參考，具體如下：

參考網上的代碼寫了一個下載xls文件到客戶端的jsp頁面，只要將服務器的文件地址傳給這個jsp頁面就可以實現下載文件到客戶端了。

<%@ 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("沒有文件");

return;

}

System.out.println("文件名為："+file);

os = response.getOutputStream();

response.setHeader("content-disposition", "attachment;filename=" + file);

response.setContentType("application/vnd.ms-excel");//此項內容隨文件類型而異

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:/Program Files/apache-tomcat-6.0.18/webapps/StarAttendance/upload/temp.xls">

冷山sky_snow

</option>

</select>

<input type="submit"/>

</form>

</html>

<%@ 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("沒有文件");

return;

}

System.out.println("文件名為："+file);

os = response.getOutputStream();

response.setHeader("content-disposition", "attachment;filename=" + file);

response.setContentType("application/vnd.ms-excel");//此項內容隨文件類型而異

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:/Program Files/apache-tomcat-6.0.18/webapps/StarAttendance/upload/temp.xls">

冷山sky_snow

</option>

</select>

<input type="submit"/>

</form>

</html>

2.另外一個修改后的版本(下載文件名可包含中文)

<%@ page language="java"import="java.util.*,java.net.*"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">

<meta http-equiv="Content-Type" content="text/html; charset=utf-8">

<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("UTF-8");

request.setCharacterEncoding("UTF-8");

String filepath = new String(request.getParameter("file").getBytes("ISO-8859-1"),"UTF-8");

System.out.println("============================"+filepath);

if (filepath != null) {

OutputStream os = null;

FileInputStream fis = null;

try {

String file = filepath;

if (!(new File(file)).exists()) {

System.out.println("沒有文件");

return;

}

String filefilename = file.substring(file.lastIndexOf("//")+1);

System.out.println("文件名為："+filename);

os = response.getOutputStream();

response.setHeader("content-disposition", "attachment;filename=" + new String(filename.getBytes("GBK"), "ISO-8859-1"));

response.setContentType("application/octet-stream");//八進制流與文件類型無關

byte temp[] = new byte[1024];

fis = new FileInputStream(file);

int n = 0;

while ((n = fis.read(temp)) != -1) {

os.write(temp, 0, n);

}

} catch (Exception e) {

out.print("出錯了");

} finally {

if (os != null)

os.close();

if (fis != null)

fis.close();

}

out.clear();

out = pageContext.pushBody();

}

%>

</html>