element-ui中el-upload多文件一次性上传的实现

<div class="upload-file">
 <el-upload
   accept=".xlsx"
   ref="upload"
   multiple
   :limit="5"
   action="http://xxx.xxx.xxx/personality/uploadExcel"
   :on-preview="handlePreview"
   :on-change="handleChange"
   :on-remove="handleRemove"
   :on-exceed="handleExceed"
   :file-list="fileList"
   :http-request="uploadFile"
   :auto-upload="false">
   <el-button slot="trigger" size="small" type="primary">选取文件</el-button>
   <el-button style="margin-left: 133px;" size="small" type="success" @click="submitUpload">上传到服务器
   </el-button>
   <div slot="tip" class="el-upload__tip">只能上传xlsx文件，且不超过100m</div>
 </el-upload>
 </div>

data() {
	return {
		fileData: '', // 文件上传数据（多文件合一）
		fileList: [],  // upload多文件数组
		uploadData: {
     fieldData: {
      id: '', // 机构id,
     }
    },
	}
}


methods:{
		// 上传文件
		uploadFile(file) {
		  this.fileData.append('files', file.file); // append增加数据
		},
		
		// 上传到服务器
	   submitUpload() {
	      let fieldData = this.uploadData.fieldData; // 缓存，注意，fieldData不要与fileData看混
	      if (fieldData.id === '') {
	        this.$message({
	          message: '请选择上传机构',
	          type: 'warning'
	        })
	      } else if (this.fileList.length === 0) {
	        this.$message({
	          message: '请先选择文件',
	          type: 'warning'
	        })
	      } else {
	        const isLt100M = this.fileList.every(file => file.size / 1024 / 1024 < 100);
	        if (!isLt100M) {
	          this.$message.error('请检查，上传文件大小不能超过100MB!');
	        } else {
	          this.fileData = new FormData(); // new formData对象
	          this.$refs.upload.submit(); // 提交调用uploadFile函数
	          this.fileData.append('pathId', fieldData.id); // 添加机构id
	          this.fileData.append('loginToken', this.loginToken); // 添加token
	          post(this.baseUrlData.url_02 + ":8090/personality/uploadExcel", this.fileData).then((response) => {
	            if (response.data.code === 0) {
	              this.$message({
	                message: "上传成功",
	                type: 'success'
	              });
	              this.fileList = [];
	            } else {
	              this.$message({
	                message: response.data.desc,
	                type: 'error'
	              })
	            }
	          });
	        }
	      }
	    },
	    
      //移除
      handleRemove(file, fileList) {
        this.fileList = fileList;
        // return this.$confirm(`确定移除 ${ file.name }？`);
      },

      // 选取文件超过数量提示
      handleExceed(files, fileList) {
        this.$message.warning(`当前限制选择 5 个文件，本次选择了 ${files.length} 个文件，共选择了 ${files.length + fileList.length} 个文件`);
      },	   

			 //监控上传文件列表
      handleChange(file, fileList) {
        let existFile = fileList.slice(0, fileList.length - 1).find(f => f.name === file.name);
        if (existFile) {
          this.$message.error('当前文件已经存在!');
          fileList.pop();
        }
        this.fileList = fileList;
      },
}