我有一个控制器，它发送响应实体作为对ajax调用的响应，该调用以pdf的字节数组形式。现在，我想在浏览器中显示它，但没有任何效果。我尝试了来自旧stackoverlow问题的所有建议，但没有任何效果。
这是我对弹簧控制器的回应
` %PDF-1.4
%����
6 0 obj
<</Filter/FlateDecode/Length 1983>>stream
x�� .......... [snip rest of the output]`
这是我的ajax代码
$(".form").submit(function(e) {
var form = $(this);
var url = _contextPath + "pdf/" + id;
$.ajax({
type: "GET",
url: url,
data: form.serialize(),
datatype: "application/pdf",
success: function(data, textStatus, jqXHR)
{
console.log(data);
let pdfWindow = window.open("");
var bb = btoa(encodeURIComponent((data.replace(/[\u00A0-\u2666]/g, function(c) {
return '&#' + c.charCodeAt(0) + ';';
}))));
console.log(bb);
var file = new Blob([bb], {type:'application/pdf'});
console.log(file);
var fileUrl = URL.createObjectURL(file);
pdfWindow.document.write("<iframe width='100%' height='100%' src= '"+file+"'></iframe>");
/*var pdfData = btoa(unescape(encodeURIComponent(data)));
console.log(pdfData);
var pdfDataa = atob(pdfData);
console.log(pdfDataa);*/
/* var bb = btoa(encodeURIComponent((data.replace(/[\u00A0-\u2666]/g, function(c) {
return '&#' + c.charCodeAt(0) + ';';
}))));
console.log(bb);
var file = new Blob([bb], {type:'application/pdf'});
var fileUrl = URL.createObjectURL(file);
window.open(fileUrl,'', 'height=650,width=840');*/
//console.log(data);
// window.open("data:application/pdf;base64, " + data, '', 'height=650,width=840');
/*var blob = new Blob( [data], { type: "application/pdf" });
var fileURL = URL.createObjectURL(blob);
var win = window.open();
win.document.write('<iframe src="' + fileURL + '" frameborder="0"' +
' style="border:0; top:0px; left:0px; bottom:0px;' +
' right:0px; width:100%; height:100%;" allowfullscreen></iframe>')*/
/* var datauri = 'data:application/pdf;base64,' + Base64.encode(data);
var win = window.open();
win.document.write('<iframe src="' + datauri + '" frameborder="0"' +
' style="border:0; top:0px; left:0px; bottom:0px;' +
' right:0px; width:100%; height:100%;" allowfullscreen></iframe>');*/
//var base64EncodedStr = btoa(unescape(encodeURIComponent(data)));
//window.open(data,"_blank","scrollbars=yes,resizable=yes");
//window.open("data:application/pdf," + encodeURI(data));
// window.open("data:application/pdf," + escape(data));
//window.open("data:application/pdf," + base64EncodedStr);
// window.open("data:application/octet-stream;charset=utf-16le;base64,"+base64EncodedStr);
// let pdfWindow = window.open("")
// pdfWindow.document.write("<iframe width='100%' height='100%' src='data:application/pdf;base64, "
// + blob+"'></iframe>");
/* const byteArray = data;
const blob = new Blob([byteArray], {type: 'application/pdf'});
const blobURL = URL.createObjectURL(blob);
var win = window.open();
win.document.write('<iframe src="' + blobURL + '" frameborder="0"' +
' style="border:0; top:0px; left:0px; bottom:0px;' +
' right:0px; width:100%; height:100%;" allowfullscreen></iframe>');*/
/* var len = data.length;
var buffer = new ArrayBuffer(len);
var view = new Uint8Array(buffer);
for (var i = 0; i < len; i++) {
view[i] = binary.charCodeAt(i);
}
*/
/*var base64EncodedStr = btoa(unescape(encodeURIComponent(data.toString())));
var pdfData = base64EncodedStr;
var x = window.open();
var iframe = x.document.createElement('iframe')
iframe.width = '100%'
iframe.height = '100%'
iframe.frameBorder = 0
iframe.style = "border: 0"
iframe.src = "data:application/pdf;base64, " + pdfData
x.document.body.appendChild(iframe);*/
// $('.form').unbind('submit').submit();
}
});
e.preventDefault();
});
我尝试了所有事情，但没有工作
在这里找到解决方案，我正在以％PDF-1％ 的形式发送来自spring控制器的字节字节。所以我从spring控制器发送base64编码的字符串，并将base64编码的字符串发送到浏览器，并且可以正常工作。
JavaScript代码：
var arrrayBuffer = base64ToArrayBuffer(data); //data is the base64 encoded string
function base64ToArrayBuffer(base64) {
var binaryString = window.atob(base64);
var binaryLen = binaryString.length;
var bytes = new Uint8Array(binaryLen);
for (var i = 0; i < binaryLen; i++) {
var ascii = binaryString.charCodeAt(i);
bytes[i] = ascii;
}
return bytes;
}
var blob = new Blob([arrrayBuffer], {type: "application/pdf"});
var link = window.URL.createObjectURL(blob);
window.open(link,'', 'height=650,width=840');
在Spring Controller中将字节数组转换为base64编码的字符串
String encodedString = Base64.getEncoder().encodeToString(bytearrayofpdf);
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