点击上传文件

一、页面样式：
（1）点击前：

（2）点击后：

设计：①自定义elementPlus图标；②使用Tooltip实现鼠标悬浮按钮上出现文字提示；③上传与更换的切换样式；
前端：通过chooseVideo与chooseVideoFile这两个方法，分别去①限制点击上传的文件类型；②获取到上传的文件this.fileInfo.selectedFile与this.fileInfo.selectedVideoFile传给后端进一步处理；③通过拿到的文件直接可以fileInfo.selectedFile.name获取到文件名；

二、前端代码

<el-dialog v-model="addVideoFile" :before-close="closeDialog" title="新增视频"  width="800px"><el-form :model="fileInfo" label-position="left" label-width="100px"><el-form-item label="视频："><span v-if="fileInfo.selectedFile" style="margin-right: 5px;color: black">{{fileInfo.selectedFile.name}}</span><el-button type="primary" @click="chooseVideo">{{ fileInfo.selectedFile ? "更换视频" : "上传视频" }}<el-icon class="el-icon--right"><UploadFilled /></el-icon></el-button></el-form-item><el-form-item label="压缩包："><span v-if="fileInfo.selectedVideoFile" style="margin-right: 5px;color: black">{{fileInfo.selectedVideoFile.name}}</span><el-tooltip content="支持word/excel/pdf/zip/exe/md/rar/mp4/txt文件" placement="bottom" effect="light"><el-button type="primary" @click="chooseVideoFile">{{ fileInfo.selectedVideoFile ? "更换压缩包" : "上传压缩包" }}<el-icon class="el-icon--right"><Briefcase /></el-icon></el-button></el-tooltip></el-form-item></el-form><template #footer><span class="dialog-footer"><el-button @click="addVideoFile = false; ">取消</el-button><el-button type="primary" @click="addVideoList">确认</el-button></span></template></el-dialog>

// 点击新增视频openAddVideoFile(){this.resetVideoFile();this.addVideoFile = true;},closeDialog() {this.addVideoFile = false;},//清空新增弹框数据resetVideoFile(){this.fileInfo.id = null;this.fileInfo.title = '';this.fileInfo.content = '';this.fileInfo.url = '';},//点击上传视频chooseVideo() {const fileInput = document.createElement("input");fileInput.style.display = "none";fileInput.type = "file";fileInput.accept = "video/*"; // 限制接受所有视频类型fileInput.onchange = () => {if (fileInput.files) {if (this.addVideoFile === true){this.fileInfo.selectedFile = fileInput.files[0];console.log("********************this.fileInfo.selectedFile",this.fileInfo.selectedFile);}}fileInput.remove();};// 触发文件选择对话框fileInput.click();},chooseVideoFile(){const fileInput = document.createElement("input");fileInput.style.display = "none";fileInput.type = "file";fileInput.accept = ".doc,.docx,application/pdf,.xlsx,application/vnd.openxmlformats-officedocument.spreadsheetml.sheet,.zip,application/x-msdownload,.md,application/x-rar-compressed,video/mp4,text/plain";fileInput.onchange = () => {if (fileInput.files) {if (this.addVideoFile === true){this.fileInfo.selectedVideoFile = fileInput.files[0];console.log("********************this.fileInfo.selectedVideoFile",this.fileInfo.selectedVideoFile);}}fileInput.remove();};// 触发文件选择对话框fileInput.click();},// 新增视频提交addVideoList(){if(this.$dataFormat.isEmpty(this.fileInfo.title)||this.$dataFormat.isEmpty(this.fileInfo.content)||this.$dataFormat.isEmpty(this.fileInfo.selectedVideoFile)){ElMessage({message: '请先补全信息',type: 'warning',})return;}// 检查是否选择了文件if (this.fileInfo.selectedFile || this.fileInfo.selectedVideoFile){let url = "/ArDownLoad/addVideoList";let data = {type:2,//查视频管理的所有数据fileType:'v',//v:视频title: this.fileInfo.title,content:this.fileInfo.content,url:this.fileInfo.selectedFile,videoUrl:this.fileInfo.selectedVideoFile,}this.$request.postForm(url,data).then(res =>{this.$msg.warning('新增成功!')this.addVideoFile = false;this.videoFilter();}).catch(() => {})}},

三、后端代码
调用了文件处理的封装方法，哈哈