vue+element+axios上传文件

js

   let formData = new FormData();
   formData.append("operatorName", 'admin');
   formData.append("phWbFiles", el);
   //formData.append("phWbFiles", el);若同一个参数继续append
  调用上传方法
  this.upLoadFiles(this,baseUrl+'',formData).then(()=>{
    成功返回，执行的方法
  })

公共上传方法(上传环境内this指针,上传地址，上传数据)
upLoadFiles(_this,_url，formData){
        return new Promise( (resolve,reject)=>{
            _this.axios({
                url: _url,
                method: 'post',
                data:formData,
                headers:{
                    'Content-Type':'multipart/form-data'
                }
            }).then(res => {
                if(res.code == 200){
                    resolve(res.data)
                }
            }).catch( res => {
                _this.$message({
                    showClose: true,
                    message: '上传失败，请重新尝试',
                    type: 'error',
                    duration:'1000'
                });
            })
        })
    },

addFile('fileInputWeb','web','xlsx')" //用来判断某个点击按钮上传的文件后缀是否正确，错误提示错误信息

//获取文件后缀
    getSuffix(fileName){
       let index = fileName.lastIndexOf(".")
       let suffix = fileName.substr(index+1);
       return suffix;
    },

<el-dialog title="" :visible.sync="uploadWebVisible" custom-class="uploadWeb">
            <div class="dialogTit">选择WEB文件</div>
            <div class="rowLine">
                <span class="web">
                    <label for="fileInputWeb">
                         <span class="uploadBtn">选择文件</span>
                    </label>
                    <input v-show="false" type="file" id="fileInputWeb" multiple @change="addFile('fileInputWeb','web','xlsx')">
                    <span class="uploadText">
                        <span v-if='web.length>0'>已添加{{web.length}}个文件</span>
                        <span v-else>暂未添加任何文件</span>
                    </span>
                </span>
            </div>
            <div class="text">添加WEB文件已完成批量审核</div>
            <div slot="footer" class="dialog-footer">
                <el-button @click="uploadFileVisible = false">取 消</el-button>
                <el-button type="primary" @click="doUpload()">确 定</el-button>
            </div>
        </el-dialog>

css

<style lang="scss">
    .inputText{
        .el-dialog{
            width:540px!important;
            background:rgba(255,255,255,1);
            box-shadow:0px 10px 30px 3px rgba(0,0,0,0.5);
            padding: 10px 45px;
            box-sizing: border-box;
            .el-dialog__header{
                .el-dialog__title{
                    font-size:28px;
                    color:#767676;
                }
            }
            .dialogTit{
                text-align: center;
                margin-bottom: 40px;
                font-size:28px;
                color:#767676;
            }
            .inputBox{
                width: 100%;
                height:50px;
                background:#E3E3E3;
                font-size: 28px;
                border: none;
                padding: 0 10px;
                box-sizing: border-box;
            }
            .dialog-footer{
                text-align: center;
                .el-button{
                    width:111px;
                    height:45px;
                    line-height: 45px;
                    font-size:24px;
                    color: #ffffff;
                    border: none;
                    padding: 0;
                    border-radius: 0;
                }
                .el-button+.el-button {
                    margin-left: 20px;
                }
                .el-button.el-button--default{
                    background:rgba(179,179,179,1);
                }
                .el-button.el-button--default:hover{
                    background: #8F8F8F;
                }
                .el-button.el-button--primary{
                    background: #004EA2;
                }
                .el-button.el-button--primary:hover{
                    background: #005FC6;
                }
            }
        }
        .el-dialog.exportDialog{
            .inputName{
                display: inline-block;
                margin-bottom: 5px;
                font-weight: 700;
                line-height: 48px;
                font-size: 18px;
                color: #878787;
                width: 100px;
                text-align: right;
                margin-right: 10px;
            }
            .inputValue{
                width: 250px;
                line-height: 40px;
                display: inline-block;
                background: #E3E3E3;
                border-radius: 0;
                border: 1px solid #d7d7d7;
                height: 40px;
                margin-top: 10px;
                margin-bottom: 7px;
                font-size: 18px;
            }
        }
        .el-dialog.uploadDialog, .el-dialog.uploadWeb{
            .rowLine{
                margin-bottom: 15px;
                .inputName{
                    display: inline-block;
                    width: 100px;
                    margin-bottom: 5px;
                    font-weight: 700;
                    line-height: 48px;
                    font-size: 18px;
                    color: #878787;
                    text-align: right;
                    margin-right: 10px;
                }
                .Hp,.inventory,.web{
                    display: inline-block;
                    width: 300px;
                    height: 50px;
                    line-height: 50px;
                    padding: 10px 9px;
                    box-sizing: border-box;
                    background: #E3E3E3;
                    vertical-align: middle;
                    .uploadBtn{
                        display: inline-block;
                        width:99px;
                        height:30px;
                        line-height: 30px;
                        background:rgba(119,119,119,1);
                        border:1px solid rgba(141,141,141,1);
                        font-size:20px;
                        color: #ffffff;
                        float: left;
                        cursor: pointer;
                    }
                    .uploadText{
                        height:30px;
                        font-size:20px;
                        color:rgba(118,118,118,1);
                        line-height:30px;
                        vertical-align: text-bottom;
                    }
                }
            }

        }

    }
</style>