vue uploads images to the database and displays them on the front-end page-JS Tutorial-php.cn

This time I will bring you vue to upload images to the database and display them on the front-end page. What are theprecautionsfor vue to upload images to the database and display them on the front-end page. The following is a practical case, let's take a look.

1. Click to upload a picture, and the picture selection option box will pop up.

Page code:

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Since we want to set the style of the uploaded image, we hide the input and do the following operations to send the click event of the input to the p box:

mounted: function () { var upload = document.getElementById("btnUpload"); var avatar = document.getElementById("avatar"); upload.onclick =function(){ avatar.click(); //注意IE的兼容性 }; }

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2. Add two files to the controller layer of the api interface and name them yourself, such as:

upFile.js

let multer=require('multer'); let storage = multer.diskStorage({ //设置上传后文件路径，uploads文件夹会自动创建。 destination: function (req, file, cb) { cb(null, './public/uploads') }, //给上传文件重命名，获取添加后缀名 filename: function (req, file, cb) { let fileFormat = (file.originalname).split("."); cb(null, file.fieldname + '-' + Date.now() + "." + fileFormat[fileFormat.length - 1]); } }); //添加配置文件到multer对象。 let upload = multer({ storage: storage }); module.exports = upload;

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upFileController.js

var muilter = require('./upFile.js'); //multer有single()中的名称必须是表单上传字段的name名称。 var upload=muilter.single('file'); function dataInput(req, res) { upload(req, res, function (err) { //添加错误处理 if (err) { return console.log(err); } //文件信息在req.file或者req.files中显示。 let photoPath = req.file.path; photoPath = photoPath.replace(/public/,"");//将文件路径中的public\去掉，否则会和静态资源配置冲突 //将photoPath存入数据库即可 console.log(photoPath); res.send(photoPath); }); } module.exports = { dataInput };

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3. On the page Save the address of the image into the database

upload: function (e) { var that = this; let formData = new window.FormData(); let file = e.target.files[0]; formData.append('file',file);//通过append向form对象添加数据 //利用split切割，拿到上传文件的格式 var src = file.name, formart = src.split(".")[1]; //使用if判断上传文件格式是否符合 if (formart == "jpg" || formart == "png" || formart == "docx" || formart == "txt" || formart == "ppt" || formart == "xlsx" || formart == "zip" || formart == "rar" || formart == "doc") { //只有满足以上格式时，才会触发ajax请求 this.$axios.post(this.$api.personalCenter.upFile,formData).then(function (res) { that.upFileData = res.data; }).then(function (res) { var params = { photos_url: that.upFileData, photo_des: '' }; // console.log(params.photos_url,'photos_url') that.$axios.post(that.$api.personalCenter.wallAdd,qs.stringify(params)).then(function (res) { console.log(res.data); that.$options.methods.imgList.bind(that)(); }).catch(function (err) { console.log(err); console.log("请求出错"); }) }) } else { alert("文件格式不支持上传"); } }

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I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!