This article example describes the method of JSP to download xls files from the server to the client. Share it for your reference, as follows:
Refer to the code on the Internet to write a jsp page to download the xls file to the client. Just pass the server's file address to the jsp page to download the file to the client.
<%@ page language="java"import=".*"pageEncoding="utf-8"%>
<%@ taglib prefix="c"uri="/jsp/jstl/core"%>
<%@ page import=".*" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http:///TR/xhtml1/DTD/">
<html xmlns="http:///1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link href="styles/" rel="stylesheet" type="text/css" />
<title>download</title>
</head>
<%
("gb2312");
("gb2312");
if (("file") != null) {
OutputStream os = null;
FileInputStream fis = null;
try {
String file = ("file");
if (!(new File(file)).exists()) {
("No file");
return;
}
("File name:"+file);
os = ();
("content-disposition", "attachment;filename=" + file);
("application/-excel");//This content varies according to the file typebyte temp[] = new byte[1000];
fis = new FileInputStream(file);
int n = 0;
while ((n = (temp)) != -1) {
(temp, 0, n);
}
} catch (Exception e) {
("Error");
} finally {
if (os != null)
();
if (fis != null)
();
}
();
out = ();
}
%>
<form action="" method="post">
<select name="file">
<option value="D:\Program Files\apache-tomcat-6.0.18\webapps\StarAttendance\upload/">
Lengshansky_snow
</option>
</select>
<input type="submit"/>
</form>
</html>
<%@ page language="java" import=".*" pageEncoding="utf-8"%>
<%@ taglib prefix="c" uri="/jsp/jstl/core"%>
<%@ page import=".*" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http:///TR/xhtml1/DTD/">
<html xmlns="http:///1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link href="styles/" rel="stylesheet" type="text/css" />
<title>download</title>
</head>
<%
("gb2312");
("gb2312");
if (("file") != null) {
OutputStream os = null;
FileInputStream fis = null;
try {
String file = ("file");
if (!(new File(file)).exists()) {
("No file");
return;
}
("File name:"+file);
os = ();
("content-disposition", "attachment;filename=" + file);
("application/-excel");//This content varies according to the file type byte temp[] = new byte[1000];
fis = new FileInputStream(file);
int n = 0;
while ((n = (temp)) != -1) {
(temp, 0, n);
}
} catch (Exception e) {
("Error");
} finally {
if (os != null)
();
if (fis != null)
();
}
();
out = ();
}
%>
<form action="" method="post">
<select name="file">
<option value="D:\Program Files\apache-tomcat-6.0.18\webapps\StarAttendance\upload/">
Lengshansky_snow
</option>
</select>
<input type="submit"/>
</form>
</html>
2. Another modified version (the download file name can contain Chinese)
<%@ page language="java"import=".*,.*"pageEncoding="utf-8"%>
<%@ taglib prefix="c"uri="/jsp/jstl/core"%>
<%@ page import=".*" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http:///TR/xhtml1/DTD/">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<html xmlns="http:///1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link href="styles/" rel="stylesheet" type="text/css" />
<title>download</title>
</head>
<%
("UTF-8");
("UTF-8");
String filepath = new String(("file").getBytes("ISO-8859-1"),"UTF-8");
("============================"+filepath);
if (filepath != null) {
OutputStream os = null;
FileInputStream fis = null;
try {
String file = filepath;
if (!(new File(file)).exists()) {
("No file");
return;
}
String filefilename = (("\\")+1);
("File name:"+filename);
os = ();
("content-disposition", "attachment;filename=" + new String(("GBK"), "ISO-8859-1"));
("application/octet-stream");//Octal stream has nothing to do with file typebyte temp[] = new byte[1024];
fis = new FileInputStream(file);
int n = 0;
while ((n = (temp)) != -1) {
(temp, 0, n);
}
} catch (Exception e) {
("What went wrong");
} finally {
if (os != null)
();
if (fis != null)
();
}
();
out = ();
}
%>
</html>
I hope this article will be helpful to everyone's JSP programming.