Golang Gin框架实现文件下载功能的示例代码怎么写

您所在的位置：网站首页 › go gin文件下载 › Golang Gin框架实现文件下载功能的示例代码怎么写

Golang Gin框架实现文件下载功能的示例代码怎么写

2023-03-16 19:46| 来源: 网络整理| 查看: 265

Golang Gin框架实现文件下载功能的示例代码怎么写发布时间：2021-12-09 15:07:53 来源：亿速云阅读：236 作者：柒染栏目：开发技术

这期内容当中小编将会给大家带来有关Golang Gin框架实现文件下载功能的示例代码怎么写，文章内容丰富且以专业的角度为大家分析和叙述，阅读完这篇文章希望大家可以有所收获。

Layui框架实现文件上传

基本的思路就是随便创建一个元素，然后使用layui的upload组件对创建的元素进行渲染，详见代码

+添加附件 //以layui.js的方式引入使用时需要手动加载layui的组件 layui.use(['layer','upload'],function(){ // PS：个人理解，该行只是为了引入layui框架的组件，html文件加载完毕后执行，内部的代码和直接写在script标签内没啥区别，只是可以在代码中使用layer了 // 此处引入layer只是为了打印一些东西 var layer = layui.layer, upload = layui.upload; // 渲染元素，使其支持文件上传 // 详情请移步 https://www.layui.com/doc/modules/upload.html // https://www.layui.com/demo/upload.html upload.render({ elem: '#attachment-upload', // 感觉利用了jquery的id选择器，这里用#id(上传附件的标签、按钮值类型元素id)就可以了 url: dev_url + "fc/upload", // 后端接收上传文件的接口地址 headers: { // 这里官方文档中没有，是在请求后端接口时在request header中增加一些请求参数，实测可行 'api_token': uInfo }, accept: 'file', // 这里可以限定支持上传文件的类型，详见文档 done: function (res) { // 调用后端上传文件接口后的返回 // 这里解析下后端的返回字段，具体怎么着看业务吧 if (res.success == false) { layer.msg("上传文件失败!" + res.msg); } }); })

PS：注意下使用layui上传文件的请求格式为multiply/form-data，参数为file,(binary)格式

Golang Gin框架实现文件下载功能的示例代码怎么写

Gin框架获取前端上传的文件func UploadFileControl(c *gin.Context) { logrus.Infof("[UploadFileControl] user_id =%d", userId) // GIN框架获取前端上传文件 // 这里的参数其实是上传文件时的字段名，也就是上面图片中的file，如果前端是自己定义的其他字段名，需要替换下 uploadFile, fileHeader, err := c.Request.FormFile("file") if err != nil { c.JSON(http.StatusOK, gin.H{ "success": false, "msg": "获取文件信息失败!" + err.Error(), }) } if uploadFile != nil { // 记得及时关闭文件，避免内存泄漏 defer uploadFile.Close() } // 读取上传文件的内容 // 其实这里直接读取所有不太合理,如果文件过大时会占用很多内存，可以考虑使用缓冲区读取 fileContent, err := ioutil.ReadAll(uploadFile) if err != nil { c.JSON(http.StatusOK, gin.H{ "success": false, "msg": "读取文件内容失败!" + err.Error(), }) } // 接受到文件后的处理方式，可以保存到本地，也可以上传到文件对象，看自己了 /*fileId, err := oss.GetOssClient().UploadFile(userId, fileHeader.Filename, fileContent) if err != nil { logrus.Errorf("[UploadFile] error,user_id = %d,err_msg= %s", userId, err.Error()) c.JSON(http.StatusOK, gin.H{ "success": false, "msg": "上传文件失败!请稍后再试", }) }*/ // 这里向前端返回下上传成功的信息 c.JSON(http.StatusOK, gin.H{ "success": true, "msg": "", }) }Gin框架的文件下载

Response Header中的Content-Type指定了服务器端返回数据的类型，浏览器自己是可以处理这些类型的，当返回的数据为文件类型时，浏览器会自行下载。具体的类型和content-type的对应方式可见

文件扩展名Content-Type(Mime-Type)文件扩展名Content-Type(Mime-Type).*（二进制流，不知道下载文件类型）application/octet-stream.tifimage/tiff.001application/x-001.301application/x-301.323text/h423.906application/x-906.907drawing/907.a11application/x-a11.acpaudio/x-mei-aac.aiapplication/postscript.aifaudio/aiff.aifcaudio/aiff.aiffaudio/aiff.anvapplication/x-anv.asatext/asa.asfvideo/x-ms-asf.asptext/asp.asxvideo/x-ms-asf.auaudio/basic.avivideo/avi.awfapplication/vnd.adobe.workflow.biztext/xml.bmpapplication/x-bmp.botapplication/x-bot.c4tapplication/x-c4t.c90application/x-c90.calapplication/x-cals.catapplication/vnd.ms-pki.seccat.cdfapplication/x-netcdf.cdrapplication/x-cdr.celapplication/x-cel.cerapplication/x-x509-ca-cert.cg4application/x-g4.cgmapplication/x-cgm.citapplication/x-cit.classjava/*.cmltext/xml.cmpapplication/x-cmp.cmxapplication/x-cmx.cotapplication/x-cot.crlapplication/pkix-crl.crtapplication/x-x509-ca-cert.csiapplication/x-csi.csstext/css.cutapplication/x-cut.dbfapplication/x-dbf.dbmapplication/x-dbm.dbxapplication/x-dbx.dcdtext/xml.dcxapplication/x-dcx.derapplication/x-x509-ca-cert.dgnapplication/x-dgn.dibapplication/x-dib.dllapplication/x-msdownload.docapplication/msword.dotapplication/msword.drwapplication/x-drw.dtdtext/xml.dwfModel/vnd.dwf.dwfapplication/x-dwf.dwgapplication/x-dwg.dxbapplication/x-dxb.dxfapplication/x-dxf.ednapplication/vnd.adobe.edn.emfapplication/x-emf.emlmessage/rfc822.enttext/xml.epiapplication/x-epi.epsapplication/x-ps.epsapplication/postscript.etdapplication/x-ebx.exeapplication/x-msdownload.faximage/fax.fdfapplication/vnd.fdf.fifapplication/fractals.fotext/xml.frmapplication/x-frm.g4application/x-g4.gbrapplication/x-gbr.application/x-.gifimage/gif.gl2application/x-gl2.gp4application/x-gp4.hglapplication/x-hgl.hmrapplication/x-hmr.hpgapplication/x-hpgl.hplapplication/x-hpl.hqxapplication/mac-binhex40.hrfapplication/x-hrf.htaapplication/hta.htctext/x-component.htmtext/html.htmltext/html.htttext/webviewhtml.htxtext/html.icbapplication/x-icb.icoimage/x-icon.icoapplication/x-ico.iffapplication/x-iff.ig4application/x-g4.igsapplication/x-igs.iiiapplication/x-iphone.imgapplication/x-img.insapplication/x-internet-signup.ispapplication/x-internet-signup.IVFvideo/x-ivf.javajava/*.jfifimage/jpeg.jpeimage/jpeg.jpeapplication/x-jpe.jpegimage/jpeg.jpgimage/jpeg.jpgapplication/x-jpg.jsapplication/x-javascript.jsptext/html.la1audio/x-liquid-file.larapplication/x-laplayer-reg.latexapplication/x-latex.lavsaudio/x-liquid-secure.lbmapplication/x-lbm.lmsffaudio/x-la-lms.lsapplication/x-javascript.ltrapplication/x-ltr.m1vvideo/x-mpeg.m2vvideo/x-mpeg.m3uaudio/mpegurl.m4evideo/mpeg4.macapplication/x-mac.manapplication/x-troff-man.mathtext/xml.mdbapplication/msaccess.mdbapplication/x-mdb.mfpapplication/x-shockwave-flash.mhtmessage/rfc822.mhtmlmessage/rfc822.miapplication/x-mi.midaudio/mid.midiaudio/mid.milapplication/x-mil.mmltext/xml.mndaudio/x-musicnet-download.mnsaudio/x-musicnet-stream.mochaapplication/x-javascript.movievideo/x-sgi-movie.mp1audio/mp1.mp2audio/mp2.mp2vvideo/mpeg.mp3audio/mp3.mp4video/mpeg4.mpavideo/x-mpg.mpdapplication/vnd.ms-project.mpevideo/x-mpeg.mpegvideo/mpg.mpgvideo/mpg.mpgaaudio/rn-mpeg.mppapplication/vnd.ms-project.mpsvideo/x-mpeg.mptapplication/vnd.ms-project.mpvvideo/mpg.mpv2video/mpeg.mpwapplication/vnd.ms-project.mpxapplication/vnd.ms-project.mtxtext/xml.mxpapplication/x-mmxp.netimage/pnetvue.nrfapplication/x-nrf.nwsmessage/rfc822.odctext/x-ms-odc.outapplication/x-out.p10application/pkcs10.p12application/x-pkcs12.p7bapplication/x-pkcs7-certificates.p7capplication/pkcs7-mime.p7mapplication/pkcs7-mime.p7rapplication/x-pkcs7-certreqresp.p7sapplication/pkcs7-signature.pc5application/x-pc5.pciapplication/x-pci.pclapplication/x-pcl.pcxapplication/x-pcx.pdfapplication/pdf.pdfapplication/pdf.pdxapplication/vnd.adobe.pdx.pfxapplication/x-pkcs12.pglapplication/x-pgl.picapplication/x-pic.pkoapplication/vnd.ms-pki.pko.plapplication/x-perl.plgtext/html.plsaudio/scpls.pltapplication/x-plt.pngimage/png.pngapplication/x-png.potapplication/vnd.ms-powerpoint.ppaapplication/vnd.ms-powerpoint.ppmapplication/x-ppm.ppsapplication/vnd.ms-powerpoint.pptapplication/vnd.ms-powerpoint.pptapplication/x-ppt.prapplication/x-pr.prfapplication/pics-rules.prnapplication/x-prn.prtapplication/x-prt.psapplication/x-ps.psapplication/postscript.ptnapplication/x-ptn.pwzapplication/vnd.ms-powerpoint.r3ttext/vnd.rn-realtext3d.raaudio/vnd.rn-realaudio.ramaudio/x-pn-realaudio.rasapplication/x-ras.ratapplication/rat-file.rdftext/xml.recapplication/vnd.rn-recording.redapplication/x-red.rgbapplication/x-rgb.rjsapplication/vnd.rn-realsystem-rjs.rjtapplication/vnd.rn-realsystem-rjt.rlcapplication/x-rlc.rleapplication/x-rle.rmapplication/vnd.rn-realmedia.rmfapplication/vnd.adobe.rmf.rmiaudio/mid.rmjapplication/vnd.rn-realsystem-rmj.rmmaudio/x-pn-realaudio.rmpapplication/vnd.rn-rn_music_package.rmsapplication/vnd.rn-realmedia-secure.rmvbapplication/vnd.rn-realmedia-vbr.rmxapplication/vnd.rn-realsystem-rmx.rnxapplication/vnd.rn-realplayer.rpimage/vnd.rn-realpix.rpmaudio/x-pn-realaudio-plugin.rsmlapplication/vnd.rn-rsml.rttext/vnd.rn-realtext.rtfapplication/msword.rtfapplication/x-rtf.rvvideo/vnd.rn-realvideo.samapplication/x-sam.satapplication/x-sat.sdpapplication/sdp.sdwapplication/x-sdw.sitapplication/x-stuffit.slbapplication/x-slb.sldapplication/x-sld.slkdrawing/x-slk.smiapplication/smil.smilapplication/smil.smkapplication/x-smk.sndaudio/basic.soltext/plain.sortext/plain.spcapplication/x-pkcs7-certificates.splapplication/futuresplash.spptext/xml.ssmapplication/streamingmedia.sstapplication/vnd.ms-pki.certstore.stlapplication/vnd.ms-pki.stl.stmtext/html.styapplication/x-sty.svgtext/xml.swfapplication/x-shockwave-flash.tdfapplication/x-tdf.tg4application/x-tg4.tgaapplication/x-tga.tifimage/tiff.tifapplication/x-tif.tiffimage/tiff.tldtext/xml.topdrawing/x-top.torrentapplication/x-bittorrent.tsdtext/xml.txttext/plain.uinapplication/x-icq.ulstext/iuls.vcftext/x-vcard.vdaapplication/x-vda.vdxapplication/vnd.visio.vmltext/xml.vpgapplication/x-vpeg005.vsdapplication/vnd.visio.vsdapplication/x-vsd.vssapplication/vnd.visio.vstapplication/vnd.visio.vstapplication/x-vst.vswapplication/vnd.visio.vsxapplication/vnd.visio.vtxapplication/vnd.visio.vxmltext/xml.wavaudio/wav.waxaudio/x-ms-wax.wb1application/x-wb1.wb2application/x-wb2.wb3application/x-wb3.wbmpimage/vnd.wap.wbmp.wizapplication/msword.wk3application/x-wk3.wk4application/x-wk4.wkqapplication/x-wkq.wksapplication/x-wks.wmvideo/x-ms-wm.wmaaudio/x-ms-wma.wmdapplication/x-ms-wmd.wmfapplication/x-wmf.wmltext/vnd.wap.wml.wmvvideo/x-ms-wmv.wmxvideo/x-ms-wmx.wmzapplication/x-ms-wmz.wp6application/x-wp6.wpdapplication/x-wpd.wpgapplication/x-wpg.wplapplication/vnd.ms-wpl.wq1application/x-wq1.wr1application/x-wr1.wriapplication/x-wri.wrkapplication/x-wrk.wsapplication/x-ws.ws2application/x-ws.wsctext/scriptlet.wsdltext/xml.wvxvideo/x-ms-wvx.xdpapplication/vnd.adobe.xdp.xdrtext/xml.xfdapplication/vnd.adobe.xfd.xfdfapplication/vnd.adobe.xfdf.xhtmltext/html.xlsapplication/vnd.ms-excel.xlsapplication/x-xls.xlwapplication/x-xlw.xmltext/xml.xplaudio/scpls.xqtext/xml.xqltext/xml.xquerytext/xml.xsdtext/xml.xsltext/xml.xslttext/xml.xwdapplication/x-xwd.x_bapplication/x-x_b.sisapplication/vnd.symbian.install.sisxapplication/vnd.symbian.install.x_tapplication/x-x_t.ipaapplication/vnd.iphone.apkapplication/vnd.android.package-archive.xapapplication/x-silverlight-app

当Content-Type是一些文件类型时，使用Content-Disposition可以指定浏览器下载文件时的默认文件名因此，我们想要使用gin实现下载文件的功能，只需要在接口返回时设置Response-Header中的Content-Type为文件类型，并设置Content-Disposition指定默认的文件名，然后将文件数据返回浏览器即可，具体代码如下：

func DownloadFileControl(c *gin.Context) { // 查询一些必要的参数进行一些必要的验证 attchIdStr := c.Query("attachment_id") attachmentName = c.Query("attachment_name") // 获取要返回的文件数据流 // 看你文件存在哪里了，本地就直接os.Open就可以了，总之是要获取一个[]byte /* fileContent, err := oss.GetOssClient().DownloadFile(req.AttachmentId, req.AttachmentName) if err != nil { logrus.Errorf("[DownloadFile] download file error,file_id = %d,file_name = %s,user_is = %d,err_msg= %s", req.UserId, req.AttachmentId, req.AttachmentName, err.Error()) c.JSON(http.StatusOK, gin.H{ "success": false, "msg": "下载文件失败,请联系管理员", }) return }*/ // 设置返回头并返回数据 fileContentDisposition := "attachment;filename=\"" + attachmentName + "\"" c.Header("Content-Type", "application/zip") // 这里是压缩文件类型 .zip c.Header("Content-Disposition", fileContentDisposition) c.Data(http.StatusOK, contentType, fileContent)

上述就是小编为大家分享的Golang Gin框架实现文件下载功能的示例代码怎么写了，如果刚好有类似的疑惑，不妨参照上述分析进行理解。如果想知道更多相关知识，欢迎关注亿速云行业资讯频道。

推荐阅读： Golang 的Gin框架入门教学 golang安装gin的方法

免责声明：本站发布的内容（图片、视频和文字）以原创、转载和分享为主，文章观点不代表本网站立场，如果涉及侵权请联系站长邮箱：[email protected]进行举报，并提供相关证据，一经查实，将立刻删除涉嫌侵权内容。

gin golang 上一篇新闻：如何分析C/C++ Qt数据库与SqlTableModel组件应用下一篇新闻：css怎么去掉输入框样式猜你喜欢 css如何让超链接访问后和访问前的颜色不同且访问后仍保留hover和active效果 python如何检查对象的内存占用情况 java如何使用substring()方法反转字符如何使用python实现列表反转 linux如何使用rm命令删除目录 java如何使用Byte数组反转字符 java如何通过交换实现字符反转 java如何使用String charAt方法反转字符 python如何将元素进行重复 python如何判断字符串是不是回文串

【本文地址】

Golang Gin框架实现文件下载功能的示例代码怎么写

Golang Gin框架实现文件下载功能的示例代码怎么写

今日新闻

推荐新闻