PHP大文件及断点续传下载实现代码
发布:smiling 来源: PHP粉丝网 添加日期:2022-03-22 09:29:56 浏览: 评论:0
一般来说浏览器要同时下载几个文件,比如pdf文件,会在服务器端把几个文件压缩成一个文件,但是导致的问题就是会消耗服务器的cpu和io资源。
那有没有办法,用户点了几个文件,在客户端同时下载呢? 支持html5的浏览器是可以的,html的a标签有一个属性download
<a download="下载的1.pdf" href="1.pdf" rel="external nofollow" rel="external nofollow" >单个文件下载</a>, 经过测试在edge浏览器,firefox和chrome都支持。但是遗憾的是ie浏览器不支持。参考下面的例子。
- <!DOCTYPE html>
- <html>
- <head>
- <meta charset="utf-8">
- <meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1">
- <title></title>
- <script src="//libs.baidu.com/jquery/1.11.1/jquery.min.js"></script>
- </head>
- <body>
- <input type="button" class="downloadAll"
- value="批量下载" />
- <script>
- var filesForDownload = [];
- filesForDownload[filesForDownload.length] = {
- path: "1.zip", //要下载的文件路径
- name: "file1.txt" //下载后要显示的名称
- };
- filesForDownload[filesForDownload.length] = {
- path: "2.zip",
- name: "file2.txt"
- };
- filesForDownload[filesForDownload.length] = {
- path: "3.zip",
- name: "file3.txt"
- };
- function download(obj) {
- var temporaryDownloadLink =
- document.createElement("a");
- temporaryDownloadLink.style.display =
- 'none';
- document.body.appendChild(
- temporaryDownloadLink);
- temporaryDownloadLink.setAttribute(
- 'href', obj.path);
- temporaryDownloadLink.setAttribute(
- 'download', obj.name);
- temporaryDownloadLink.click();
- document.body.removeChild(
- temporaryDownloadLink);
- }
- $('input.downloadAll').click(function(
- e) {
- e.preventDefault();
- for (var x in filesForDownload) {
- download(filesForDownload[x]);
- }
- });
- </script>
- </body>
- </html>
ie浏览器怎么办呢? 也可以用window.open函数。
- <!DOCTYPE html>
- <html>
- <head>
- <meta charset="utf-8">
- <title></title>
- <script src="//libs.baidu.com/jquery/1.11.1/jquery.min.js"></script>
- </head>
- <body>
- <a download="下载的1.pdf" href="1.pdf" rel="external nofollow" rel="external nofollow" >单个文件下载</a>
- <br>
- <a href="#" rel="external nofollow" class="yourlink">下载全部文件</a>
- <script>
- $('a.yourlink').click(function(e) {
- e.preventDefault();
- window.open('1.zip', 'download');
- window.open('2.zip', 'download');
- window.open('3.zip', 'download');
- });
- </script>
- </body>
- </html>
完整的方案就是根据浏览器类型,调用不同的函数,实现。
另外要下载pdf,而不是在浏览器中打开的话,需要配置apache的配置文件,在httpd.conf中增加下面的配置。
- <FilesMatch "\.pdf$">
- Header set Content-Disposition attachment
- </FilesMatch>
或者使用down2组件,下载更简单。
JavaScript:
引入头
- <head>
- <metahttp-equiv="Content-Type" content="text/html; charset=utf-8"
- />
- <title>donw2-多文件演示页面</title>
- <linktype="text/css" href="js/down.css" rel="external nofollow" rel="Stylesheet"
- />
- <scripttype="text/javascript" src="js/jquery-1.4.min.js">
- </script>
- <scripttype="text/javascript" src="js/down.app.js"
- charset="utf-8">
- </script>
- <scripttype="text/javascript" src="js/down.edge.js"
- charset="utf-8">
- </script>
- <scripttype="text/javascript" src="js/down.file.js"
- charset="utf-8">
- </script>
- <scripttype="text/javascript" src="js/down.folder.js"
- charset="utf-8">
- </script>
- <scripttype="text/javascript" src="js/down.js"
- charset="utf-8">
- </script>
- </head>
创建down2对象
- var downer = new DownloaderMgr();
- downer.Config["Folder"] = ""; //设置默认下载路径。
- //挂载事件
- downer.event.taskCreate = function(obj) {
- $(document.body).append("文件ID:" + obj
- .fileSvr.id) + "<br/>";
- };
- downer.event.downProcess = function(obj) {};
- downer.event.downStoped = function(obj) {};
- downer.event.downComplete = function(
- obj) {
- $(document.body).append('<div>本地路径:' +
- obj.fileSvr.pathLoc + '</div>');
- };
- downer.event.downError = function(obj,
- err) {};
- downer.event.queueComplete = function() {
- $(document.body).append(
- "<div>队列完成</div>");
- };
批量下载url
- $("#btn-down-files").click(function() {
- if (downer.Config["Folder"] == "") {
- downer.open_folder();
- return;
- }
- var urls = [
- {
- fileUrl: "http://res2.ncmem.com/res/images/ie11.png"
- }
- , {
- fileUrl: "http://res2.ncmem.com/res/images/up6.1/down.png"
- }
- , {
- fileUrl: "http://res2.ncmem.com/res/images/firefox.png"
- }
- , {
- fileUrl: "http://res2.ncmem.com/res/images/edge.png"
- }
- , {
- fileUrl: "http://res2.ncmem.com/res/images/up6.1/cloud.png"
- }
- , {
- fileUrl: "http://res2.ncmem.com/res/images/home/w.png"
- }
- , {
- fileUrl: "http://res2.ncmem.com/res/images/img.png"
- }
- ];
- downer.app.addUrls(urls);
- });
当成一个文件夹下载
- $("#btn-down-json").click(function() {
- if (downer.Config["Folder"] == "") {
- downer.open_folder();
- return;
- }
- var fd = {
- nameLoc: "图片列表"
- ,
- files: [
- {
- fileUrl: "http://res2.ncmem.com/res/images/ie11.png"
- }
- , {
- fileUrl: "http://res2.ncmem.com/res/images/up6.1/down.png"
- }
- , {
- fileUrl: "http://res2.ncmem.com/res/images/firefox.png"
- }
- , {
- fileUrl: "http://res2.ncmem.com/res/images/edge.png"
- }
- , {
- fileUrl: "http://res2.ncmem.com/res/images/up6.1/cloud.png"
- }
- , {
- fileUrl: "http://res2.ncmem.com/res/images/home/w.png"
- }
- , {
- fileUrl: "http://res2.ncmem.com/res/images/img.png"
- }
- ]
- };
- downer.app.addJson(fd);
- });
下载多级目录
- $("#btn-down-fd").click(function() {
- if (downer.Config["Folder"] == "") {
- downer.open_folder();
- return;
- }
- var fd = {
- nameLoc: "测试文件夹"
- ,
- files: [
- {
- fileUrl: "http://www.ncmem.com/images/ico-ftp.jpg"
- }
- , {
- fileUrl: "http://www.ncmem.com/images/ico-up.jpg"
- }
- ]
- ,
- folders: [
- {
- nameLoc: "图片1"
- ,
- files: [
- {
- fileUrl: "http://www.ncmem.com/images/ico-ftp.jpg"
- }
- , {
- fileUrl: "http://www.ncmem.com/images/ico-up.jpg"
- }
- , {
- fileUrl: "http://www.ncmem.com/images/ico-capture.jpg"
- }
- , {
- fileUrl: "http://www.ncmem.com/images/ico-imageuploader.gif"
- }
- , {
- fileUrl: "http://www.ncmem.com/images/ico-wordpaster.gif"
- }
- ]
- ,
- folders: [
- {
- nameLoc: "软件"
- ,
- files: [
- {
- fileUrl: "http://res2.ncmem.com/res/images/edit-file.png"
- }
- ]
- }
- ]
- }
- ]
- };
- downer.app.addJson(fd);
- });
自定义下载文件名称
- $("#btn-down-svr").click(function () {
- if (downer.Config["Folder"] == "") { downer.open_folder(); return; }
- var urls = [
- { fileUrl: "http://localhost:90/db/down.aspx", nameLoc: "test.exe" }
- , { fileUrl: "http://localhost:90/db/down.aspx", nameLoc: "test-1.exe" }
- ];
- downer.app.addUrls(urls);
- });
实现效果:
Tags: PHP大文件断点续传
- 上一篇:jQuery+PHP实现图片上传并提交功能
- 下一篇:最后一页
相关文章
- ·php实现大文件断点续传下载实例代码(2021-12-26)
推荐文章
热门文章
最新评论文章
- 写给考虑创业的年轻程序员(10)
- PHP新手上路(一)(7)
- 惹恼程序员的十件事(5)
- PHP邮件发送例子,已测试成功(5)
- 致初学者:PHP比ASP优秀的七个理由(4)
- PHP会被淘汰吗?(4)
- PHP新手上路(四)(4)
- 如何去学习PHP?(2)
- 简单入门级php分页代码(2)
- php中邮箱email 电话等格式的验证(2)