一、此方法火狐有些版本是不支持的
window.location.href = 'https://*****.oss-cn-**.aliyuncs.com/*********';二、為了解決火狐有些版本不支持,可以改成這種方式
window.location='https://*****.oss-cn-**.aliyuncs.com/*********';三、該方法IE和火狐都可以,url表示要下載的文件路徑:
-
function(url){
-
try {
-
var elemIF =
document.createElement(
"iframe");
-
elemIF.src = url;
-
elemIF.style.display =
"none";
-
document.body.appendChild(elemIF);
-
}
catch (e) {
-
alert(
"下載異常！");
-
}
-
}
四、form表單的形式
-
downloadFile(url){
-
var form=$(
"<form>");
-
form.attr(
"style",
"display:none");
-
form.attr(
"target",
"");
-
form.attr(
"method",
"get");
-
form.attr(
"action",url);
-
$(
"body").append(form);
-
form.submit();
//表單提交}
-
}
五、a標簽的方式
-
function(url,name){
-
var a =
document.createElement(
"a");
-
a.download = name +
".xls";
-
a.href = url;
-
$(
"body").append(a);
// 修復firefox中無法觸發click
-
a.click();
-
$(a).remove();
-
}
六、假如后台給的文件流
-
function (formData, url, name) {
-
return
new
Promise(
(resolve, reject) => {
-
var xhr =
new XMLHttpRequest();
-
xhr.open(
"POST", url,
true);
// 也可以使用POST方式，根據接口
-
xhr.responseType =
"blob";
// 返回類型blob
-
// 定義請求完成的處理函數，請求前也可以增加加載框/禁用下載按鈕邏輯
-
xhr.onload =
function () {
-
// 請求完成
-
if (
this.status ===
200) {
-
// 返回200
-
var blob =
this.response;
-
var reader =
new FileReader();
-
reader.readAsDataURL(blob);
// 轉換為base64，可以直接放入a表情href
-
reader.onload =
function (e) {
-
// 轉換完成，創建一個a標簽用於下載
-
var a =
document.createElement(
"a");
-
a.download = name +
".xls";
-
a.href = e.target.result;
-
$(
"body").append(a);
// 修復firefox中無法觸發click
-
a.click();
-
resolve(
200)
-
$(a).remove();
-
};
-
}
-
};
-
// 發送ajax請求
-
xhr.send(formData);
-
})
-
};
七、download.js
我粘貼一下download的源碼
-
//download.js v4.2, by dandavis; 2008-2016. [CCBY2] see http://danml.com/download.html for tests/usage
-
// v1 landed a FF+Chrome compat way of downloading strings to local un-named files, upgraded to use a hidden frame and optional mime
-
// v2 added named files via a[download], msSaveBlob, IE (10+) support, and window.URL support for larger+faster saves than dataURLs
-
// v3 added dataURL and Blob Input, bind-toggle arity, and legacy dataURL fallback was improved with force-download mime and base64 support. 3.1 improved safari handling.
-
// v4 adds AMD/UMD, commonJS, and plain browser support
-
// v4.1 adds url download capability via solo URL argument (same domain/CORS only)
-
// v4.2 adds semantic variable names, long (over 2MB) dataURL support, and hidden by default temp anchors
-
// https://github.com/rndme/download
-
-
(
function (root, factory) {
-
if (
typeof define ===
'function' && define.amd) {
-
// AMD. Register as an anonymous module.
-
define([], factory);
-
}
else
if (
typeof exports ===
'object') {
-
// Node. Does not work with strict CommonJS, but
-
// only CommonJS-like environments that support module.exports,
-
// like Node.
-
module.exports = factory();
-
}
else {
-
// Browser globals (root is window)
-
root.download = factory();
-
}
-
}(
this,
function () {
-
-
return
function download(data, strFileName, strMimeType) {
-
-
var self =
window,
// this script is only for browsers anyway...
-
defaultMime =
"application/octet-stream",
// this default mime also triggers iframe downloads
-
mimeType = strMimeType || defaultMime,
-
payload = data,
-
url = !strFileName && !strMimeType && payload,
-
anchor =
document.createElement(
"a"),
-
toString =
function(a){
return
String(a);},
-
myBlob = (self.Blob || self.MozBlob || self.WebKitBlob || toString),
-
fileName = strFileName ||
"download",
-
blob,
-
reader;
-
myBlob= myBlob.call ? myBlob.bind(self) : Blob ;
-
-
if(
String(
this)===
"true"){
//reverse arguments, allowing download.bind(true, "text/xml", "export.xml") to act as a callback
-
payload=[payload, mimeType];
-
mimeType=payload[
0];
-
payload=payload[
1];
-
}
-
-
-
if(url && url.length<
2048){
// if no filename and no mime, assume a url was passed as the only argument
-
fileName = url.split(
"/").pop().split(
"?")[
0];
-
anchor.href = url;
// assign href prop to temp anchor
-
if(anchor.href.indexOf(url) !==
-1){
// if the browser determines that it's a potentially valid url path:
-
var ajax=
new XMLHttpRequest();
-
ajax.open(
"GET", url,
true);
-
ajax.responseType =
'blob';
-
ajax.onload=
function(e){
-
download(e.target.response, fileName, defaultMime);
-
};
-
setTimeout(
function(){ ajax.send();},
0);
// allows setting custom ajax headers using the return:
-
return ajax;
-
}
// end if valid url?
-
}
// end if url?
-
-
-
//go ahead and download dataURLs right away
-
if(
/^data\:[\w+\-]+\/[\w+\-]+[,;]/.test(payload)){
-
-
if(payload.length > (
1024*
1024*
1.999) && myBlob !== toString ){
-
payload=dataUrlToBlob(payload);
-
mimeType=payload.type || defaultMime;
-
}
else{
-
return navigator.msSaveBlob ?
// IE10 can't do a[download], only Blobs:
-
navigator.msSaveBlob(dataUrlToBlob(payload), fileName) :
-
saver(payload) ;
// everyone else can save dataURLs un-processed
-
}
-
-
}
//end if dataURL passed?
-
-
blob = payload
instanceof myBlob ?
-
payload :
-
new myBlob([payload], {
type: mimeType}) ;
-
-
-
function dataUrlToBlob(strUrl) {
-
var parts= strUrl.split(
/[:;,]/),
-
type= parts[
1],
-
decoder= parts[
2] ==
"base64" ? atob :
decodeURIComponent,
-
binData= decoder( parts.pop() ),
-
mx= binData.length,
-
i=
0,
-
uiArr=
new
Uint8Array(mx);
-
-
for(i;i<mx;++i) uiArr[i]= binData.charCodeAt(i);
-
-
return
new myBlob([uiArr], {
type: type});
-
}
-
-
function saver(url, winMode){
-
-
if (
'download'
in anchor) {
//html5 A[download]
-
anchor.href = url;
-
anchor.setAttribute(
"download", fileName);
-
anchor.className =
"download-js-link";
-
anchor.innerHTML =
"downloading...";
-
anchor.style.display =
"none";
-
document.body.appendChild(anchor);
-
setTimeout(
function() {
-
anchor.click();
-
document.body.removeChild(anchor);
-
if(winMode===
true){setTimeout(
function(){ self.URL.revokeObjectURL(anchor.href);},
250 );}
-
},
66);
-
return
true;
-
}
-
-
// handle non-a[download] safari as best we can:
-
if(
/(Version)\/(\d+)\.(\d+)(?:\.(\d+))?.*Safari\//.test(navigator.userAgent)) {
-
url=url.replace(
/^data:([\w\/\-\+]+)/, defaultMime);
-
if(!
window.open(url)){
// popup blocked, offer direct download:
-
if(confirm(
"Displaying New Document\n\nUse Save As... to download, then click back to return to this page.")){ location.href=url; }
-
}
-
return
true;
-
}
-
-
//do iframe dataURL download (old ch+FF):
-
var f =
document.createElement(
"iframe");
-
document.body.appendChild(f);
-
-
if(!winMode){
// force a mime that will download:
-
url=
"data:"+url.replace(
/^data:([\w\/\-\+]+)/, defaultMime);
-
}
-
f.src=url;
-
setTimeout(
function(){
document.body.removeChild(f); },
333);
-
-
}
//end saver
-
-
-
-
-
if (navigator.msSaveBlob) {
// IE10+ : (has Blob, but not a[download] or URL)
-
return navigator.msSaveBlob(blob, fileName);
-
}
-
-
if(self.URL){
// simple fast and modern way using Blob and URL:
-
saver(self.URL.createObjectURL(blob),
true);
-
}
else{
-
// handle non-Blob()+non-URL browsers:
-
if(
typeof blob ===
"string" || blob.constructor===toString ){
-
try{
-
return saver(
"data:" + mimeType +
";base64," + self.btoa(blob) );
-
}
catch(y){
-
return saver(
"data:" + mimeType +
"," +
encodeURIComponent(blob) );
-
}
-
}
-
-
// Blob but not URL support:
-
reader=
new FileReader();
-
reader.onload=
function(e){
-
saver(
this.result);
-
};
-
reader.readAsDataURL(blob);
-
}
-
return
true;
-
};
/* end download() */
-
}));
用法：
download(fileUrl,name,"video/mp4");
具體更多的用法請參考官網，
注意 download.js第一個參數 是數據流，不是像oss那樣的文件地址
詳細的配置信息可以參考我寫的這篇文章： http://blog.ncmem.com/wordpress/2019/08/28/java%e6%89%b9%e9%87%8f%e4%b8%8b%e8%bd%bd/