element-ui upload组件多文件上传

之前有一篇写的如何同时传递form表单及upload组件文件，如果有多个upload文件该如何传递呢

上代码

html

 1         <el-form-item label="实验信息" prop="expvmInstruction">
 2           <el-upload
 3             class="upload-demo"
 4             drag
 5             ref="uploadhtml"
 6             :action="upload_url"
 7             :auto-upload="false"
 8             :before-upload="newHtml"
 9             accept=".html, .htm">
10             <div class="el-upload__text">将文件拖到此处，或<em>点击上传</em></div>
11             <div slot="tip" class="el-upload__tip">实验信息上传，只能传(.html/.htm)文件</div>
12           </el-upload>
13         </el-form-item>
14         <el-form-item label="附件信息" prop="expvmFiles">
15           <el-upload
16             class="upload-demo"
17             drag
18             ref="uploadfile"
19             :action="upload_url"
20             :auto-upload="false"
21             :before-upload="newFiles"
22             multiple>
23             <div class="el-upload__text">将文件拖到此处，或<em>点击上传</em></div>
24             <div slot="tip" class="el-upload__tip">实验信息附件上传，只能传(.file)文件</div>
25           </el-upload>
26         </el-form-item>
27         <el-form-item label="实验视频"  prop="expvmVideo">
28           <el-upload
29             class="upload-demo"
30             drag
31             ref="uploadvideo"
32             :action="upload_url"
33             :auto-upload="false"
34             :before-upload="newVideo"
35             accept=".mp4">
36             <div class="el-upload__text">将文件拖到此处，或<em>点击上传</em></div>
37             <div slot="tip" class="el-upload__tip">实验视频上传，只能传(.mp4)文件</div>
38           </el-upload>
39         </el-form-item>

js

 1 newSubmitForm () {
 2       this.$refs[‘newform‘].validate((valid) => {
 3         if (valid) {
 4           this.uploadForm.append(‘expName‘, this.newform.expName)
 5           this.uploadForm.append(‘expSn‘, this.newform.expSn)
 6           this.uploadForm.append(‘groupId‘, this.newgroupId)
 7           this.uploadForm.append(‘subGroupId‘, this.newsubgroupId)
 8           this.uploadForm.append(‘expvmDifficulty‘, this.newform.expvmDifficulty)
 9           this.uploadForm.append(‘type‘, ‘0‘)
10           newExp(this.uploadForm).then(res => {
11             if (res.code === 400) {
12               this.$message.error(res.error)
13             } else if (res.code === 200) {
14               this.$message.success(‘上传成功！‘)
15               this.showTableData()
16             }
17           })
18           this.$refs.uploadhtml.submit()
19           this.$refs.uploadfile.submit()
20           this.$refs.uploadvideo.submit()
21           this.newFormVisible = false
22         } else {
23           console.log(‘error submit!!‘)
24           return false
25         }
26       })
27     },
28     newHtml (file) {
29       this.uploadForm.append(‘html‘, file)
30       return false
31     },
32     newFiles (file) {
33       this.uploadForm.append(‘file[]‘, file)
34       return false
35     },
36     newVideo (file) {
37       this.uploadForm.append(‘video‘, file)
38       return false
39     }

在data中定义

uploadForm: new FormData(),

注意

this.uploadForm.append(‘file[]‘, file)

这里是接收多文件一定要是数组形式的file[]