在一些时候我们想ajax方式来保存一些PDF文件，尤其是它放在远程服务器上，并且是保存在我们自己的服务器上存储，这个时候我们需要写一段程序来帮助我们完成这个工作，本文介绍了PHP 远程下载PDF文件保存在本地服务器本地化,需要的朋友可以参考下:
html页面代码如下:
<!DOCTYPE html>
<html>
<head>
<script data-require="[email protected]" data-semver="2.1.1" src="//cdnjs.cloudflare.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link rel="stylesheet" href="style.css" />
<script src="jquery.binarytransport.js"></script>
<script src="script.js"></script>
</head>
<body>
<button>download pdf</button>
</body>
</html>script.js代码如下:
$(function() {
$("button").click(function() {
$.ajax({
url: "http://lch.bat.com/aa.pdf",
type: "GET",
dataType: 'binary',
success: function(result) {
var blob = new Blob([result], {type:"application/pdf"});
var data = new FormData();
data.append('file', blob);
$.ajax({
type: 'POST',
url: 'http://lch.demo.com/read.php',
data: data,
processData: false,
contentType: false,
success: function (arg) {
alert('下载成功');
}
})
}
});
});
});jquery.binarytransport.js代码如下：
/**
*
* jquery.binarytransport.js
*
* @description. jQuery ajax transport for making binary data type requests.
* @version 1.0
*
*/
// use this transport for "binary" data type
$.ajaxTransport("+binary", function(options, originalOptions, jqXHR){
// check for conditions and support for blob / arraybuffer response type
if (window.FormData && ((options.dataType && (options.dataType == 'binary')) || (options.data && ((window.ArrayBuffer && options.data instanceof ArrayBuffer) || (window.Blob && options.data instanceof Blob)))))
{
return {
// create new XMLHttpRequest
send: function(_, callback){
// setup all variables
var xhr = new XMLHttpRequest(),
url = options.url,
type = options.type,
// blob or arraybuffer. Default is blob
dataType = options.responseType || "blob",
data = options.data || null;
xhr.addEventListener('load', function(){
var data = {};
data[options.dataType] = xhr.response;
// make callback and send data
callback(xhr.status, xhr.statusText, data, xhr.getAllResponseHeaders());
});
xhr.open(type, url, true);
xhr.responseType = dataType;
xhr.send(data);
},
abort: function(){
jqXHR.abort();
}
};
}
});再来看看我的本地读取pdf文件的代码：
<?php
/**
* Created by PhpStorm.
* User: LCA
* Date: 2020/9/28
* Time: 9:44
*/
//header('Access-Control-Allow-Origin: *');
// 响应类型
header('Access-Control-Allow-Methods:*');
// 响应头设置
header('Access-Control-Allow-Headers:content-type,token,id');
header("Access-Control-Request-Headers: Origin, X-Requested-With, content-Type, Accept, Authorization");
if(isset($_FILES['file'])){
$fname = "cc.pdf";
move_uploaded_file($_FILES['file']['tmp_name'], "/htdocs/demo/" . $fname);
echo "写入成功";
}最后把jquery库文件引进来，远程下载后，本地即可以打开和原始文件内容一模一样，不会出现乱码了。