在 Javascript 中将 PDF 转换为 Base64 编码的字符串
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Convert PDF to a Base64-encoded string in Javascript
提问by onuryilmaz
I need to encode a PDF file to Base64 with Javascript. I can create Base64-encoded jpeg or png images in Javascript, but I could not find any way or sample code to create a Base64-encoded string from a PDF file.
我需要使用 Javascript 将 PDF 文件编码为 Base64。我可以在 Javascript 中创建 Base64 编码的 jpeg 或 png 图像,但是我找不到任何方法或示例代码来从 PDF 文件创建 Base64 编码的字符串。
Is it there any solution using a HTML5 canvas?
有没有使用 HTML5 画布的解决方案?
Thanks.
谢谢。
回答by Mohit Singh
Try this :-
尝试这个 :-
<input id="inputFile" type="file" onchange="convertToBase64();" />
<script type="text/javascript">
function convertToBase64() {
//Read File
var selectedFile = document.getElementById("inputFile").files;
//Check File is not Empty
if (selectedFile.length > 0) {
// Select the very first file from list
var fileToLoad = selectedFile[0];
// FileReader function for read the file.
var fileReader = new FileReader();
var base64;
// Onload of file read the file content
fileReader.onload = function(fileLoadedEvent) {
base64 = fileLoadedEvent.target.result;
// Print data in console
console.log(base64);
};
// Convert data to base64
fileReader.readAsDataURL(fileToLoad);
}
}
</script>
回答by onuryilmaz
Here is how one person did it:
这是一个人是如何做到的:
Here is a link that suggests several other possible solutions:
这是一个链接,建议了其他几种可能的解决方案:

