JSP实现文件下载
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2022-03-19 19:51:54
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showLink.jsp
<%@ 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>download file</title>
</head>
<body>
<a href="download.jsp">click here</a>
</body>
</html>
download.jsp
<%@ page language="java"
contentType="application/x-msdownload; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ page import="java.io.*"%>
<%@ page import="java.net.*"%>
<%
response.reset();
response.setContentType("application/x-download");
String realPath = application.getRealPath("download");
String fileName = "bbb.txt";
fileName = URLEncoder.encode(fileName, "UTF-8");
response.addHeader("Content-Disposition", "attachment;filename="
+ fileName);
FileInputStream fis = null;
OutputStream os = null;
try {
fis = new FileInputStream(realPath + "/" + fileName);
os = response.getOutputStream();
byte[] bbuf = new byte[1024];
int hasRead = 0;
while ((hasRead = fis.read(bbuf)) > 0) {
os.write(bbuf, 0, hasRead);
}
os.flush();
out.clear();
out = pageContext.pushBody();
} catch (Exception e) {
e.printStackTrace();
} finally {
if (fis != null) {
fis.close();
}
}
%>