pdf.js如何跨域读取pdf文件？

You can modify the defaultUrl app option in the web/app_options.js file or you can append the ?file= query string to the viewer URL, e.g. http://mozilla.github.com/pdf.js/web/viewer.html?file=compressed.tracemonkey-pldi-09.pdf. In the latter case, the PDF path/URL must be encoded using encodeURIComponent().The viewer can be started without any PDF loaded by setting the defaultUrl app option to an empty string or by using the ?file= query string without any location specified. Use PDFViewerApplication.open(file) to load the PDF file later.You can use raw binary data to open a PDF document: use Uint8Array instead of URL in the PDFViewerApplication.open call. If you have base64 encoded data, please decode it first -- not all browsers have atob or data URI scheme support. (The base64 conversion operation uses more memory, so we recommend delivering raw PDF data as typed array in first place.)

<?php
//直接使用file_get_contents获取再输出就行
$file = file_get_contents($url);
echo $file;
?>

var PDFData = "";
var getUrl = "";
var baseUrl = "http://www.zdxhxfzxwx.com.img26752.200cdn.com:9898";
getUrl = baseUrl + getQueryString("filePath");
$.ajax({
type:"post",
async:false, //
contentType: "application/x-www-form-urlencoded",
mimeType: 'text/plain; charset=x-user-defined',
url:"/plus/getFileToBinary.php",
success:function(data){
PDFData = data;
},
data: {
"url": getUrl,
}
});
var rawLength = PDFData.length;
console.log(rawLength);
//转换成pdf.js能直接解析的Uint8Array类型,见pdf.js-4068
var array = new Uint8Array(new ArrayBuffer(rawLength));
for(i = 0; i < rawLength; i++) {
array[i] = PDFData.charCodeAt(i) & 0xff;
}
DEFAULT_URL = array;
function getQueryString(name) {
var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");
var r = window.location.search.substr(1).match(reg);
if (r != null) return unescape(r[2]);
return null;
}