el-upload携带参数data

<el-upload
        drag
        :before-upload="beforeUploadFile_vimg"
        :show-file-list="false"
        :action=FILE_ACTION
        :on-success="handleFileSuccess_vimg"
        accept="image/*"
        :data="{type:'vimg',oldf: dataForm.vimg}"
        :multiple="false">

    <img v-if="dataForm.vimg!=null&&dataForm.vimg!=''" :src="FILE_URL+dataForm.vimg"  style="width: 100px;height: 100px;border-radius:5%">

    <i class="el-icon-upload2"  v-else size="max"></i>
</el-upload>

beforeUploadFile_vimg(){


    this.loading = this.$loading({
        lock: true,
        text: "上传中，请稍等,,,,",
        spinner: "el-icon-loading",
        background: "rgba(0, 0, 0, 0.5)",
    });
},
handleFileSuccess_vimg(res) {
    this.loading.close();
    console.log(res)
    if( res.status==1){

        this.$message.success( '上传成功' );
        this.dataForm.vimg=res.data;
    }else{
        this.$message.error( '上传失败' );
    }

},

this.FILE_URL=process.env.VUE_APP_API_ROOT;
this.FILE_ACTION=process.env.VUE_APP_API_ROOT+'/common/upfile';