el-upload上传文件

<el-upload class="upload-demo" :auto-upload="false" action="" :show-file-list="false" :on-change="handleImport" :limit="3">
        <el-button type="primary">导入线索</el-button>
</el-upload>

handleImport(file,fileList) {
    if (fileList.length > 1) {
        fileList.splice(0, 1);
    }
    let formdata = new FormData();
    formdata.append("file", file.raw);
    formdata.append("distributorId", this.distributorId);
    var url = "/buyCusDis/buyCarInputExcel";
    var config = {
        headers:{
            "Content-Type": "multipart/form-data" 
        }
    }
    this.$post2(url, formdata,config).then(res => {
        if(res.code == "0"){
            this.$message.success(res.message);
        }else{
            this.$message.error(res.message);
        }
    })
},

参考资料：
http://www.imooc.com/wenda/detail/516081

<el-upload :on-change="fileChange" ></el-upload>

data(){
    files:[],//要上传的文件对象
},
methods:{
    fileChange(file){
        this.files.push(file.raw);//上传文件变化时将文件对象push进files数组
    },
    upload(){
        let formData = new FormData();
        formData.append('files',this.files);
        let config = {
            headers: {
                'Content-Type': 'multipart/form-data'
            }
        };
        axios.post(uploadUrl,formData,config).then(res=>{
            if(res.code===0){
                this.submitForm();//提交表单
            }
        })
    }
}