element-ui upload組件多文件上傳

之前有一篇寫的如何同時傳遞form表單及upload組件文件，如果有多個upload文件該如何傳遞呢

上代碼

html

      <el-form ref="newform" :model="newform" :rules="rules">
        <el-form-item prop="expName" label="">
          <el-input v-model="newform.expName" placeholder="" style="width:75%">
          </el-input>
        </el-form-item>
        <el-form-item prop="expSn" label="">
          <el-input v-model="newform.expSn" placeholder="" style="width:75%">
          </el-input>
        </el-form-item>
        <el-form-item label='' prop="groupName">
          <el-select v-model="newform.groupName" placeholder="" style="width:75%" @change="newSelectGroup($event)">
            <el-option
            v-for="item in groupOptions"
            :key="item.groupId"
            :label="item.groupName"
            :value="item.groupId">
            </el-option>
          </el-select>
        </el-form-item>
        <el-form-item  label="" prop="subGroupName">
          <el-select v-model="newform.subGroupName" placeholder="" style="width:75%" @change="newSelectSubGroup($event)">
            <el-option
            v-for="item in subGroupOptions"
            :key="item.subGroupId"
            :label="item.subGroupName"
            :value="item.subGroupId">
            </el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="" prop="expvmDifficulty">
          <el-rate v-model="newform.expvmDifficulty" :max="5" style="line-height: 2;"></el-rate>
        </el-form-item>
        <el-form-item label="" prop="expvmInstruction">
          <el-upload
            class="upload-demo"
            drag
            ref="uploadhtml"
            :action="upload_url"
            :auto-upload="false"
            :before-upload="newHtml"
            accept=".html, .htm">
            <div class="el-upload__text">將文件拖到此處，或<em>點擊上傳</em></div>
            <div slot="tip" class="el-upload__tip">實驗信息上傳，只能傳(.html/.htm)文件</div>
          </el-upload>
        </el-form-item>
        <el-form-item label="" prop="expvmFiles">
          <el-upload
            class="upload-demo"
            drag
            ref="uploadfile"
            :action="upload_url"
            :auto-upload="false"
            :before-upload="newFiles"
            multiple>
            <div class="el-upload__text">將文件拖到此處，或<em>點擊上傳</em></div>
            <div slot="tip" class="el-upload__tip">實驗信息附件上傳，只能傳(.file)文件</div>
          </el-upload>
        </el-form-item>
        <el-form-item label=""  prop="expvmVideo">
          <el-upload
            class="upload-demo"
            drag
            ref="uploadvideo"
            :action="upload_url"
            :auto-upload="false"
            :before-upload="newVideo"
            accept=".mp4">
            <div class="el-upload__text">將文件拖到此處，或<em>點擊上傳</em></div>
            <div slot="tip" class="el-upload__tip">實驗視頻上傳，只能傳(.mp4)文件</div>
          </el-upload>
        </el-form-item>
        <el-form-item style="text-align:center">
         <el-button type="primary" @click="newSubmitForm()" class="yes-btn">
          確 定
         </el-button>
         <el-button @click="resetForm('newform')">
          重 置
         </el-button>
        </el-form-item>
     </el-form>

js

 data () {
    return {
　　　 upload_url: 'aaa',       // 隨便填一個，但一定要有
　　   uploadForm: new FormData(),   // 一個formdata
      rules: {},     // 用到的規則
      newform: {
        expName: '',
        groupName: '',
        expSn: '',
        subGroupName: '',
        expvmDifficulty: 1
      }
    }
  }

methods

 1    newSubmitForm () {
 2       this.$refs['newform'].validate((valid) => {
 3         if (valid) {
 4           this.uploadForm.append('expName', this.newform.expName)
 5           this.uploadForm.append('expSn', this.newform.expSn)
 6           this.uploadForm.append('groupId', this.newgroupId)
 7           this.uploadForm.append('subGroupId', this.newsubgroupId)
 8           this.uploadForm.append('expvmDifficulty', this.newform.expvmDifficulty)
 9           
10           newExp(this.uploadForm).then(res => {
11             if (res.code === 400) {
12               this.$message.error(res.error)
13             } else if (res.code === 200) {
14               this.$message.success('上傳成功！')
15             
16             }
17           })
18           this.$refs.uploadhtml.submit()   // 提交時觸發了before-upload函數
19           this.$refs.uploadfile.submit()
20           this.$refs.uploadvideo.submit()
21           
22         } else {
23           console.log('error submit!!')
24           return false
25         }
26       })
27     },
28     newHtml (file) {   // before-upload
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     }

newExp函數是作為一個前后端交互的函數

export function newExp (data) {
  return axios({
    method: 'post',  // 方式一定是post
    url: '你的后台接收函數路徑',
    timeout: 20000,
    data: data        // 參數需要是單一的formData形式
  })
}

PHP代碼，后台接收

public function newExp() {
    $param = $this->request->post();          // 獲取頁面表單傳值
    $files = $this->request->file();          // 接收到的文件
}

注意

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

這里是接收多文件一定要是數組形式的file[]