一、此方法火狐有些版本是不支持的
window.location.href= 'https://*****.oss-cn-**.aliyuncs.com/*********';
二、为了解决火狐有些版本不支持,可以改成这种方式
window.location='https://*****.oss-cn-**.aliyuncs.com/*********';
三、该方法IE和火狐都可以,url表示要下载的文件路径:function(url){try{var elemIF = document.createElement("iframe");
elemIF.src=url;
elemIF.style.display= "none";
document.body.appendChild(elemIF);
}catch(e) {
alert("下载异常！");
}
}
四、form表单的形式
downloadFile(url){var form=$("
");form.attr("style","display:none");
form.attr("target","");
form.attr("method","get");
form.attr("action",url);
$("body").append(form);
form.submit();//表单提交}
}
五、a标签的方式function(url,name){var a = document.createElement("a");
a.download= name + ".xls";
a.href=url;
$("body").append(a); //修复firefox中无法触发click
a.click();
$(a).remove();
}
六、假如后台给的文件流function(formData, url, name) {return new Promise((resolve, reject) =>{var xhr = newXMLHttpRequest();
xhr.open("POST", url, true); //也可以使用POST方式，根据接口
xhr.responseType = "blob"; //返回类型blob
//定义请求完成的处理函数，请求前也可以增加加载框/禁用下载按钮逻辑
xhr.onload = function() {//请求完成
if (this.status === 200) {//返回200
var blob = this.response;var reader = newFileReader();
reader.readAsDataURL(blob);//转换为base64，可以直接放入a表情href
reader.onload = function(e) {//转换完成，创建一个a标签用于下载
var a = document.createElement("a");
a.download= name + ".xls";
a.href=e.target.result;
$("body").append(a); //修复firefox中无法触发click
a.click();
resolve(200)
$(a).remove();
};
}
};//发送ajax请求
xhr.send(formData);
})
};
七、download.js
我粘贴一下download的源码//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 functiondownload(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){returnString(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=newXMLHttpRequest();
ajax.open("GET", url, true);
ajax.responseType= 'blob';
ajax.οnlοad= function(e){
download(e.target.response, fileName, defaultMime);
};
setTimeout(function(){ ajax.send();}, 0); //allows setting custom ajax headers using the return:
returnajax;
}//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 :newmyBlob([payload], {type: mimeType}) ;functiondataUrlToBlob(strUrl) {var parts= strUrl.split(/[:;,]/),
type= parts[1],
decoder= parts[2] == "base64" ?atob : decodeURIComponent,
binData=decoder( parts.pop() ),
mx=binData.length,
i= 0,
uiArr= newUint8Array(mx);for(i;i
}functionsaver(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)
returnnavigator.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=newFileReader();
reader.οnlοad=function(e){
saver(this.result);
};
reader.readAsDataURL(blob);
}return true;
};/*end download()*/}));
用法：
download(fileUrl,name,"video/mp4");
具体更多的用法请参考官网，
注意 download.js第一个参数 是数据流，不是像oss那样的文件地址
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版权声明：本文为CSDN博主「攻城狮狮」的原创文章，遵循CC4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/wodebokecsdn/java/article/details/88397665
