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最新推荐文章于 2024-04-03 21:00:00 发布

sigangjun

最新推荐文章于 2024-04-03 21:00:00 发布

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分类专栏： jsp 页面工具页 web 文章标签：页面

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<%@page import="org.apache.velocity.tools.view.servlet.WebappLoader"%>
<%@page import="org.springframework.web.context.WebApplicationContext"%>
<%@page import="org.springframework.web.context.support.WebApplicationContextUtils"%>
<%@page import="java.io.File"%>
<%@page import="java.io.FileInputStream"%>
<%@page import="java.io.OutputStream"%>
<%@page import="java.io.InputStream"%>
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<html>
<head>
<%
	String str = request.getParameter("path");
	if(str == null || "".equals(str)){
		return;
	}
	String path = request.getRealPath(str);
	File file = new File(path);
	if (!file.exists() || file.isDirectory()) {
        return;
    }
	
	InputStream input = null;
	OutputStream output = null;
	
	try{
		output = response.getOutputStream();
		input = new FileInputStream(file);
		response.setHeader("Content-disposition","attachment;filename="+str.substring(str.lastIndexOf("/")+1));
		byte[] buf = new byte[1024];
		int i = 0;
		while((i=input.read(buf)) != -1){
			output.write(buf,0,i);
		}
		
	}catch(Exception e){
		e.printStackTrace();
	}finally{
		try{
			if(output != null){
				output.flush();
				output.close();
			}
			if(input != null){
				input.close();
			}
		}catch(Exception e){
			e.printStackTrace();
		}
		out.clear();
		out = pageContext.pushBody();
	}
	
%>
</head>
</html>