我在这里指定了一个非常类似的需求。
我需要有用户的浏览器手动启动下载时$('a#someID').click();
但是我不能用窗户。Href方法，因为它将当前页面内容替换为您试图下载的文件。
相反，我想在新窗口/标签中打开下载。这怎么可能呢?
当前回答
适用于Chrome, Firefox和IE8及以上。
var link=document.createElement('a');
document.body.appendChild(link);
link.href=url ;
link.click();
其他回答
使用一个不可见的<iframe>:
<iframe id="my_iframe" style="display:none;"></iframe>
<script>
function Download(url) {
document.getElementById('my_iframe').src = url;
};
</script>
为了迫使浏览器下载它本来能够呈现的文件(例如HTML或文本文件)，您需要服务器将文件的MIME Type设置为一个无意义的值，例如application/x-please-download-me或application/octet-stream，这用于任意二进制数据。
如果您只想在一个新选项卡中打开它，唯一的方法是让用户单击目标属性设置为_blank的链接。
jQuery:
$('a#someID').attr({target: '_blank',
href : 'http://localhost/directory/file.pdf'});
无论何时单击该链接，它都会在一个新的选项卡/窗口中下载文件。
我很惊讶没有很多人知道元素的下载属性。请帮助传播这个消息!你可以有一个隐藏的html链接，假装点击它。如果html链接具有下载属性，它将下载文件，而不是查看文件，无论如何。这是代码。如果能找到猫的图片，它就会下载。
. getelementbyid(“下载”).click (); <a href="https://docs.google.com/uc?id=0B0jH18Lft7ypSmRjdWg1c082Y2M" download id="download" hidden></a>
注意: 并非所有浏览器都支持:http://www.w3schools.com/tags/att_a_download.asp
注意:并非所有浏览器都支持。
我正在寻找一种方法，使用jquery下载文件，而不必从一开始就在href属性中设置文件url。
jQuery (< / >, { id:“downloadFile”, href:“http://cdn.sstatic.net/Sites/stackoverflow/img/apple-touch-icon@2.png”, 风格:“显示:隐藏。” 下载:“ }) .appendTo(身体的); $ (" # downloadFile ") [0] .click (); < script src = " https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js " > < /脚本>
最完整的和工作(测试)代码下载数据为FireFox, Chrome和IE代码如下。假设数据是在texarea字段，有id='textarea_area'和filename是文件的名称，数据将被下载。
function download(filename) {
if (typeof filename==='undefined') filename = ""; // default
value = document.getElementById('textarea_area').value;
filetype="text/*";
extension=filename.substring(filename.lastIndexOf("."));
for (var i = 0; i < extToMIME.length; i++) {
if (extToMIME[i][0].localeCompare(extension)==0) {
filetype=extToMIME[i][1];
break;
}
}
var pom = document.createElement('a');
pom.setAttribute('href', 'data: '+filetype+';charset=utf-8,' + '\ufeff' + encodeURIComponent(value)); // Added BOM too
pom.setAttribute('download', filename);
if (document.createEvent) {
if (navigator.userAgent.indexOf('MSIE') !== -1 || navigator.appVersion.indexOf('Trident/') > 0) { // IE
blobObject = new Blob(['\ufeff'+value]);
window.navigator.msSaveBlob(blobObject, filename);
} else { // FF, Chrome
var event = document.createEvent('MouseEvents');
event.initEvent('click', true, true);
pom.dispatchEvent(event);
}
} else if( document.createEventObject ) { // Have No Idea
var evObj = document.createEventObject();
pom.fireEvent( 'onclick' , evObj );
} else { // For Any Case
pom.click();
}
}
然后调用
<a href="javascript:download();">Download</a>
下载初始化。
为下载对话框设置正确的MIME类型的数组可以如下:
// ----------------------- Extensions to MIME --------- //
// List of mime types
// combination of values from Windows 7 Registry and
// from C:\Windows\System32\inetsrv\config\applicationHost.config
// some added, including .7z and .dat
var extToMIME = [
[".323", "text/h323"],
[".3g2", "video/3gpp2"],
[".3gp", "video/3gpp"],
[".3gp2", "video/3gpp2"],
[".3gpp", "video/3gpp"],
[".7z", "application/x-7z-compressed"],
[".aa", "audio/audible"],
[".AAC", "audio/aac"],
[".aaf", "application/octet-stream"],
[".aax", "audio/vnd.audible.aax"],
[".ac3", "audio/ac3"],
[".aca", "application/octet-stream"],
[".accda", "application/msaccess.addin"],
[".accdb", "application/msaccess"],
[".accdc", "application/msaccess.cab"],
[".accde", "application/msaccess"],
[".accdr", "application/msaccess.runtime"],
[".accdt", "application/msaccess"],
[".accdw", "application/msaccess.webapplication"],
[".accft", "application/msaccess.ftemplate"],
[".acx", "application/internet-property-stream"],
[".AddIn", "text/xml"],
[".ade", "application/msaccess"],
[".adobebridge", "application/x-bridge-url"],
[".adp", "application/msaccess"],
[".ADT", "audio/vnd.dlna.adts"],
[".ADTS", "audio/aac"],
[".afm", "application/octet-stream"],
[".ai", "application/postscript"],
[".aif", "audio/x-aiff"],
[".aifc", "audio/aiff"],
[".aiff", "audio/aiff"],
[".air", "application/vnd.adobe.air-application-installer-package+zip"],
[".amc", "application/x-mpeg"],
[".application", "application/x-ms-application"],
[".art", "image/x-jg"],
[".asa", "application/xml"],
[".asax", "application/xml"],
[".ascx", "application/xml"],
[".asd", "application/octet-stream"],
[".asf", "video/x-ms-asf"],
[".ashx", "application/xml"],
[".asi", "application/octet-stream"],
[".asm", "text/plain"],
[".asmx", "application/xml"],
[".aspx", "application/xml"],
[".asr", "video/x-ms-asf"],
[".asx", "video/x-ms-asf"],
[".atom", "application/atom+xml"],
[".au", "audio/basic"],
[".avi", "video/x-msvideo"],
[".axs", "application/olescript"],
[".bas", "text/plain"],
[".bcpio", "application/x-bcpio"],
[".bin", "application/octet-stream"],
[".bmp", "image/bmp"],
[".c", "text/plain"],
[".cab", "application/octet-stream"],
[".caf", "audio/x-caf"],
[".calx", "application/vnd.ms-office.calx"],
[".cat", "application/vnd.ms-pki.seccat"],
[".cc", "text/plain"],
[".cd", "text/plain"],
[".cdda", "audio/aiff"],
[".cdf", "application/x-cdf"],
[".cer", "application/x-x509-ca-cert"],
[".chm", "application/octet-stream"],
[".class", "application/x-java-applet"],
[".clp", "application/x-msclip"],
[".cmx", "image/x-cmx"],
[".cnf", "text/plain"],
[".cod", "image/cis-cod"],
[".config", "application/xml"],
[".contact", "text/x-ms-contact"],
[".coverage", "application/xml"],
[".cpio", "application/x-cpio"],
[".cpp", "text/plain"],
[".crd", "application/x-mscardfile"],
[".crl", "application/pkix-crl"],
[".crt", "application/x-x509-ca-cert"],
[".cs", "text/plain"],
[".csdproj", "text/plain"],
[".csh", "application/x-csh"],
[".csproj", "text/plain"],
[".css", "text/css"],
[".csv", "text/csv"],
[".cur", "application/octet-stream"],
[".cxx", "text/plain"],
[".dat", "application/octet-stream"],
[".datasource", "application/xml"],
[".dbproj", "text/plain"],
[".dcr", "application/x-director"],
[".def", "text/plain"],
[".deploy", "application/octet-stream"],
[".der", "application/x-x509-ca-cert"],
[".dgml", "application/xml"],
[".dib", "image/bmp"],
[".dif", "video/x-dv"],
[".dir", "application/x-director"],
[".disco", "text/xml"],
[".dll", "application/x-msdownload"],
[".dll.config", "text/xml"],
[".dlm", "text/dlm"],
[".doc", "application/msword"],
[".docm", "application/vnd.ms-word.document.macroEnabled.12"],
[".docx", "application/vnd.openxmlformats-officedocument.wordprocessingml.document"],
[".dot", "application/msword"],
[".dotm", "application/vnd.ms-word.template.macroEnabled.12"],
[".dotx", "application/vnd.openxmlformats-officedocument.wordprocessingml.template"],
[".dsp", "application/octet-stream"],
[".dsw", "text/plain"],
[".dtd", "text/xml"],
[".dtsConfig", "text/xml"],
[".dv", "video/x-dv"],
[".dvi", "application/x-dvi"],
[".dwf", "drawing/x-dwf"],
[".dwp", "application/octet-stream"],
[".dxr", "application/x-director"],
[".eml", "message/rfc822"],
[".emz", "application/octet-stream"],
[".eot", "application/octet-stream"],
[".eps", "application/postscript"],
[".etl", "application/etl"],
[".etx", "text/x-setext"],
[".evy", "application/envoy"],
[".exe", "application/octet-stream"],
[".exe.config", "text/xml"],
[".fdf", "application/vnd.fdf"],
[".fif", "application/fractals"],
[".filters", "Application/xml"],
[".fla", "application/octet-stream"],
[".flr", "x-world/x-vrml"],
[".flv", "video/x-flv"],
[".fsscript", "application/fsharp-script"],
[".fsx", "application/fsharp-script"],
[".generictest", "application/xml"],
[".gif", "image/gif"],
[".group", "text/x-ms-group"],
[".gsm", "audio/x-gsm"],
[".gtar", "application/x-gtar"],
[".gz", "application/x-gzip"],
[".h", "text/plain"],
[".hdf", "application/x-hdf"],
[".hdml", "text/x-hdml"],
[".hhc", "application/x-oleobject"],
[".hhk", "application/octet-stream"],
[".hhp", "application/octet-stream"],
[".hlp", "application/winhlp"],
[".hpp", "text/plain"],
[".hqx", "application/mac-binhex40"],
[".hta", "application/hta"],
[".htc", "text/x-component"],
[".htm", "text/html"],
[".html", "text/html"],
[".htt", "text/webviewhtml"],
[".hxa", "application/xml"],
[".hxc", "application/xml"],
[".hxd", "application/octet-stream"],
[".hxe", "application/xml"],
[".hxf", "application/xml"],
[".hxh", "application/octet-stream"],
[".hxi", "application/octet-stream"],
[".hxk", "application/xml"],
[".hxq", "application/octet-stream"],
[".hxr", "application/octet-stream"],
[".hxs", "application/octet-stream"],
[".hxt", "text/html"],
[".hxv", "application/xml"],
[".hxw", "application/octet-stream"],
[".hxx", "text/plain"],
[".i", "text/plain"],
[".ico", "image/x-icon"],
[".ics", "application/octet-stream"],
[".idl", "text/plain"],
[".ief", "image/ief"],
[".iii", "application/x-iphone"],
[".inc", "text/plain"],
[".inf", "application/octet-stream"],
[".inl", "text/plain"],
[".ins", "application/x-internet-signup"],
[".ipa", "application/x-itunes-ipa"],
[".ipg", "application/x-itunes-ipg"],
[".ipproj", "text/plain"],
[".ipsw", "application/x-itunes-ipsw"],
[".iqy", "text/x-ms-iqy"],
[".isp", "application/x-internet-signup"],
[".ite", "application/x-itunes-ite"],
[".itlp", "application/x-itunes-itlp"],
[".itms", "application/x-itunes-itms"],
[".itpc", "application/x-itunes-itpc"],
[".IVF", "video/x-ivf"],
[".jar", "application/java-archive"],
[".java", "application/octet-stream"],
[".jck", "application/liquidmotion"],
[".jcz", "application/liquidmotion"],
[".jfif", "image/pjpeg"],
[".jnlp", "application/x-java-jnlp-file"],
[".jpb", "application/octet-stream"],
[".jpe", "image/jpeg"],
[".jpeg", "image/jpeg"],
[".jpg", "image/jpeg"],
[".js", "application/x-javascript"],
[".json", "application/json"],
[".jsx", "text/jscript"],
[".jsxbin", "text/plain"],
[".latex", "application/x-latex"],
[".library-ms", "application/windows-library+xml"],
[".lit", "application/x-ms-reader"],
[".loadtest", "application/xml"],
[".lpk", "application/octet-stream"],
[".lsf", "video/x-la-asf"],
[".lst", "text/plain"],
[".lsx", "video/x-la-asf"],
[".lzh", "application/octet-stream"],
[".m13", "application/x-msmediaview"],
[".m14", "application/x-msmediaview"],
[".m1v", "video/mpeg"],
[".m2t", "video/vnd.dlna.mpeg-tts"],
[".m2ts", "video/vnd.dlna.mpeg-tts"],
[".m2v", "video/mpeg"],
[".m3u", "audio/x-mpegurl"],
[".m3u8", "audio/x-mpegurl"],
[".m4a", "audio/m4a"],
[".m4b", "audio/m4b"],
[".m4p", "audio/m4p"],
[".m4r", "audio/x-m4r"],
[".m4v", "video/x-m4v"],
[".mac", "image/x-macpaint"],
[".mak", "text/plain"],
[".man", "application/x-troff-man"],
[".manifest", "application/x-ms-manifest"],
[".map", "text/plain"],
[".master", "application/xml"],
[".mda", "application/msaccess"],
[".mdb", "application/x-msaccess"],
[".mde", "application/msaccess"],
[".mdp", "application/octet-stream"],
[".me", "application/x-troff-me"],
[".mfp", "application/x-shockwave-flash"],
[".mht", "message/rfc822"],
[".mhtml", "message/rfc822"],
[".mid", "audio/mid"],
[".midi", "audio/mid"],
[".mix", "application/octet-stream"],
[".mk", "text/plain"],
[".mmf", "application/x-smaf"],
[".mno", "text/xml"],
[".mny", "application/x-msmoney"],
[".mod", "video/mpeg"],
[".mov", "video/quicktime"],
[".movie", "video/x-sgi-movie"],
[".mp2", "video/mpeg"],
[".mp2v", "video/mpeg"],
[".mp3", "audio/mpeg"],
[".mp4", "video/mp4"],
[".mp4v", "video/mp4"],
[".mpa", "video/mpeg"],
[".mpe", "video/mpeg"],
[".mpeg", "video/mpeg"],
[".mpf", "application/vnd.ms-mediapackage"],
[".mpg", "video/mpeg"],
[".mpp", "application/vnd.ms-project"],
[".mpv2", "video/mpeg"],
[".mqv", "video/quicktime"],
[".ms", "application/x-troff-ms"],
[".msi", "application/octet-stream"],
[".mso", "application/octet-stream"],
[".mts", "video/vnd.dlna.mpeg-tts"],
[".mtx", "application/xml"],
[".mvb", "application/x-msmediaview"],
[".mvc", "application/x-miva-compiled"],
[".mxp", "application/x-mmxp"],
[".nc", "application/x-netcdf"],
[".nsc", "video/x-ms-asf"],
[".nws", "message/rfc822"],
[".ocx", "application/octet-stream"],
[".oda", "application/oda"],
[".odc", "text/x-ms-odc"],
[".odh", "text/plain"],
[".odl", "text/plain"],
[".odp", "application/vnd.oasis.opendocument.presentation"],
[".ods", "application/oleobject"],
[".odt", "application/vnd.oasis.opendocument.text"],
[".one", "application/onenote"],
[".onea", "application/onenote"],
[".onepkg", "application/onenote"],
[".onetmp", "application/onenote"],
[".onetoc", "application/onenote"],
[".onetoc2", "application/onenote"],
[".orderedtest", "application/xml"],
[".osdx", "application/opensearchdescription+xml"],
[".p10", "application/pkcs10"],
[".p12", "application/x-pkcs12"],
[".p7b", "application/x-pkcs7-certificates"],
[".p7c", "application/pkcs7-mime"],
[".p7m", "application/pkcs7-mime"],
[".p7r", "application/x-pkcs7-certreqresp"],
[".p7s", "application/pkcs7-signature"],
[".pbm", "image/x-portable-bitmap"],
[".pcast", "application/x-podcast"],
[".pct", "image/pict"],
[".pcx", "application/octet-stream"],
[".pcz", "application/octet-stream"],
[".pdf", "application/pdf"],
[".pfb", "application/octet-stream"],
[".pfm", "application/octet-stream"],
[".pfx", "application/x-pkcs12"],
[".pgm", "image/x-portable-graymap"],
[".pic", "image/pict"],
[".pict", "image/pict"],
[".pkgdef", "text/plain"],
[".pkgundef", "text/plain"],
[".pko", "application/vnd.ms-pki.pko"],
[".pls", "audio/scpls"],
[".pma", "application/x-perfmon"],
[".pmc", "application/x-perfmon"],
[".pml", "application/x-perfmon"],
[".pmr", "application/x-perfmon"],
[".pmw", "application/x-perfmon"],
[".png", "image/png"],
[".pnm", "image/x-portable-anymap"],
[".pnt", "image/x-macpaint"],
[".pntg", "image/x-macpaint"],
[".pnz", "image/png"],
[".pot", "application/vnd.ms-powerpoint"],
[".potm", "application/vnd.ms-powerpoint.template.macroEnabled.12"],
[".potx", "application/vnd.openxmlformats-officedocument.presentationml.template"],
[".ppa", "application/vnd.ms-powerpoint"],
[".ppam", "application/vnd.ms-powerpoint.addin.macroEnabled.12"],
[".ppm", "image/x-portable-pixmap"],
[".pps", "application/vnd.ms-powerpoint"],
[".ppsm", "application/vnd.ms-powerpoint.slideshow.macroEnabled.12"],
[".ppsx", "application/vnd.openxmlformats-officedocument.presentationml.slideshow"],
[".ppt", "application/vnd.ms-powerpoint"],
[".pptm", "application/vnd.ms-powerpoint.presentation.macroEnabled.12"],
[".pptx", "application/vnd.openxmlformats-officedocument.presentationml.presentation"],
[".prf", "application/pics-rules"],
[".prm", "application/octet-stream"],
[".prx", "application/octet-stream"],
[".ps", "application/postscript"],
[".psc1", "application/PowerShell"],
[".psd", "application/octet-stream"],
[".psess", "application/xml"],
[".psm", "application/octet-stream"],
[".psp", "application/octet-stream"],
[".pub", "application/x-mspublisher"],
[".pwz", "application/vnd.ms-powerpoint"],
[".qht", "text/x-html-insertion"],
[".qhtm", "text/x-html-insertion"],
[".qt", "video/quicktime"],
[".qti", "image/x-quicktime"],
[".qtif", "image/x-quicktime"],
[".qtl", "application/x-quicktimeplayer"],
[".qxd", "application/octet-stream"],
[".ra", "audio/x-pn-realaudio"],
[".ram", "audio/x-pn-realaudio"],
[".rar", "application/octet-stream"],
[".ras", "image/x-cmu-raster"],
[".rat", "application/rat-file"],
[".rc", "text/plain"],
[".rc2", "text/plain"],
[".rct", "text/plain"],
[".rdlc", "application/xml"],
[".resx", "application/xml"],
[".rf", "image/vnd.rn-realflash"],
[".rgb", "image/x-rgb"],
[".rgs", "text/plain"],
[".rm", "application/vnd.rn-realmedia"],
[".rmi", "audio/mid"],
[".rmp", "application/vnd.rn-rn_music_package"],
[".roff", "application/x-troff"],
[".rpm", "audio/x-pn-realaudio-plugin"],
[".rqy", "text/x-ms-rqy"],
[".rtf", "application/rtf"],
[".rtx", "text/richtext"],
[".ruleset", "application/xml"],
[".s", "text/plain"],
[".safariextz", "application/x-safari-safariextz"],
[".scd", "application/x-msschedule"],
[".sct", "text/scriptlet"],
[".sd2", "audio/x-sd2"],
[".sdp", "application/sdp"],
[".sea", "application/octet-stream"],
[".searchConnector-ms", "application/windows-search-connector+xml"],
[".setpay", "application/set-payment-initiation"],
[".setreg", "application/set-registration-initiation"],
[".settings", "application/xml"],
[".sgimb", "application/x-sgimb"],
[".sgml", "text/sgml"],
[".sh", "application/x-sh"],
[".shar", "application/x-shar"],
[".shtml", "text/html"],
[".sit", "application/x-stuffit"],
[".sitemap", "application/xml"],
[".skin", "application/xml"],
[".sldm", "application/vnd.ms-powerpoint.slide.macroEnabled.12"],
[".sldx", "application/vnd.openxmlformats-officedocument.presentationml.slide"],
[".slk", "application/vnd.ms-excel"],
[".sln", "text/plain"],
[".slupkg-ms", "application/x-ms-license"],
[".smd", "audio/x-smd"],
[".smi", "application/octet-stream"],
[".smx", "audio/x-smd"],
[".smz", "audio/x-smd"],
[".snd", "audio/basic"],
[".snippet", "application/xml"],
[".snp", "application/octet-stream"],
[".sol", "text/plain"],
[".sor", "text/plain"],
[".spc", "application/x-pkcs7-certificates"],
[".spl", "application/futuresplash"],
[".src", "application/x-wais-source"],
[".srf", "text/plain"],
[".SSISDeploymentManifest", "text/xml"],
[".ssm", "application/streamingmedia"],
[".sst", "application/vnd.ms-pki.certstore"],
[".stl", "application/vnd.ms-pki.stl"],
[".sv4cpio", "application/x-sv4cpio"],
[".sv4crc", "application/x-sv4crc"],
[".svc", "application/xml"],
[".swf", "application/x-shockwave-flash"],
[".t", "application/x-troff"],
[".tar", "application/x-tar"],
[".tcl", "application/x-tcl"],
[".testrunconfig", "application/xml"],
[".testsettings", "application/xml"],
[".tex", "application/x-tex"],
[".texi", "application/x-texinfo"],
[".texinfo", "application/x-texinfo"],
[".tgz", "application/x-compressed"],
[".thmx", "application/vnd.ms-officetheme"],
[".thn", "application/octet-stream"],
[".tif", "image/tiff"],
[".tiff", "image/tiff"],
[".tlh", "text/plain"],
[".tli", "text/plain"],
[".toc", "application/octet-stream"],
[".tr", "application/x-troff"],
[".trm", "application/x-msterminal"],
[".trx", "application/xml"],
[".ts", "video/vnd.dlna.mpeg-tts"],
[".tsv", "text/tab-separated-values"],
[".ttf", "application/octet-stream"],
[".tts", "video/vnd.dlna.mpeg-tts"],
[".txt", "text/plain"],
[".u32", "application/octet-stream"],
[".uls", "text/iuls"],
[".user", "text/plain"],
[".ustar", "application/x-ustar"],
[".vb", "text/plain"],
[".vbdproj", "text/plain"],
[".vbk", "video/mpeg"],
[".vbproj", "text/plain"],
[".vbs", "text/vbscript"],
[".vcf", "text/x-vcard"],
[".vcproj", "Application/xml"],
[".vcs", "text/plain"],
[".vcxproj", "Application/xml"],
[".vddproj", "text/plain"],
[".vdp", "text/plain"],
[".vdproj", "text/plain"],
[".vdx", "application/vnd.ms-visio.viewer"],
[".vml", "text/xml"],
[".vscontent", "application/xml"],
[".vsct", "text/xml"],
[".vsd", "application/vnd.visio"],
[".vsi", "application/ms-vsi"],
[".vsix", "application/vsix"],
[".vsixlangpack", "text/xml"],
[".vsixmanifest", "text/xml"],
[".vsmdi", "application/xml"],
[".vspscc", "text/plain"],
[".vss", "application/vnd.visio"],
[".vsscc", "text/plain"],
[".vssettings", "text/xml"],
[".vssscc", "text/plain"],
[".vst", "application/vnd.visio"],
[".vstemplate", "text/xml"],
[".vsto", "application/x-ms-vsto"],
[".vsw", "application/vnd.visio"],
[".vsx", "application/vnd.visio"],
[".vtx", "application/vnd.visio"],
[".wav", "audio/wav"],
[".wave", "audio/wav"],
[".wax", "audio/x-ms-wax"],
[".wbk", "application/msword"],
[".wbmp", "image/vnd.wap.wbmp"],
[".wcm", "application/vnd.ms-works"],
[".wdb", "application/vnd.ms-works"],
[".wdp", "image/vnd.ms-photo"],
[".webarchive", "application/x-safari-webarchive"],
[".webtest", "application/xml"],
[".wiq", "application/xml"],
[".wiz", "application/msword"],
[".wks", "application/vnd.ms-works"],
[".WLMP", "application/wlmoviemaker"],
[".wlpginstall", "application/x-wlpg-detect"],
[".wlpginstall3", "application/x-wlpg3-detect"],
[".wm", "video/x-ms-wm"],
[".wma", "audio/x-ms-wma"],
[".wmd", "application/x-ms-wmd"],
[".wmf", "application/x-msmetafile"],
[".wml", "text/vnd.wap.wml"],
[".wmlc", "application/vnd.wap.wmlc"],
[".wmls", "text/vnd.wap.wmlscript"],
[".wmlsc", "application/vnd.wap.wmlscriptc"],
[".wmp", "video/x-ms-wmp"],
[".wmv", "video/x-ms-wmv"],
[".wmx", "video/x-ms-wmx"],
[".wmz", "application/x-ms-wmz"],
[".wpl", "application/vnd.ms-wpl"],
[".wps", "application/vnd.ms-works"],
[".wri", "application/x-mswrite"],
[".wrl", "x-world/x-vrml"],
[".wrz", "x-world/x-vrml"],
[".wsc", "text/scriptlet"],
[".wsdl", "text/xml"],
[".wvx", "video/x-ms-wvx"],
[".x", "application/directx"],
[".xaf", "x-world/x-vrml"],
[".xaml", "application/xaml+xml"],
[".xap", "application/x-silverlight-app"],
[".xbap", "application/x-ms-xbap"],
[".xbm", "image/x-xbitmap"],
[".xdr", "text/plain"],
[".xht", "application/xhtml+xml"],
[".xhtml", "application/xhtml+xml"],
[".xla", "application/vnd.ms-excel"],
[".xlam", "application/vnd.ms-excel.addin.macroEnabled.12"],
[".xlc", "application/vnd.ms-excel"],
[".xld", "application/vnd.ms-excel"],
[".xlk", "application/vnd.ms-excel"],
[".xll", "application/vnd.ms-excel"],
[".xlm", "application/vnd.ms-excel"],
[".xls", "application/vnd.ms-excel"],
[".xlsb", "application/vnd.ms-excel.sheet.binary.macroEnabled.12"],
[".xlsm", "application/vnd.ms-excel.sheet.macroEnabled.12"],
[".xlsx", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"],
[".xlt", "application/vnd.ms-excel"],
[".xltm", "application/vnd.ms-excel.template.macroEnabled.12"],
[".xltx", "application/vnd.openxmlformats-officedocument.spreadsheetml.template"],
[".xlw", "application/vnd.ms-excel"],
[".xml", "text/xml"],
[".xmta", "application/xml"],
[".xof", "x-world/x-vrml"],
[".XOML", "text/plain"],
[".xpm", "image/x-xpixmap"],
[".xps", "application/vnd.ms-xpsdocument"],
[".xrm-ms", "text/xml"],
[".xsc", "application/xml"],
[".xsd", "text/xml"],
[".xsf", "text/xml"],
[".xsl", "text/xml"],
[".xslt", "text/xml"],
[".xsn", "application/octet-stream"],
[".xss", "application/xml"],
[".xtp", "application/octet-stream"],
[".xwd", "image/x-xwindowdump"],
[".z", "application/x-compress"],
[".zip", "application/x-zip-compressed"]
];
// ----------------------- End of Extensions to MIME --------- //
你必须从服务器和客户端(web应用程序)两方面进行操作。
在服务器上，设置名为Content-Disposition https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Disposition的报头
// nodejs express
res.set('Content-Disposition', `attachment; filename="${self.creationName}"`)
使用上面的头文件，服务器会告诉浏览器响应是一个文件，它应该下载并以给定的名称保存，否则浏览器可能会将文件保存为“attachments (1).zip”之类的文件
接下来，我们查看客户端，创建一个锚链接并自动单击它。
function downloadThroughAnchorLink(downloadUrl: string, fileName: string) {
const a = document.createElement('a')
a.href = downloadUrl;
// We provided a header called Content-Disposition so we dont need to set "a.download" here
// a.download = fileName || 'download'
a.click()
}
这样就行了。
