【上传 下载文件】

上传：

//angular

<input type="file" (change)="fileChange($event)" placeholder="上传文件">

//vue

<input type="file"  @change="fileChange" placeholder="上传文件">

fileChange(event) {
        let fileList = event.target.files;
        if (fileList.length > 0) {
            let file = fileList[0];
            let formData = new FormData();
            formData.append('uploadFile', file);　　　　　　　　//你的post接口，formData发送            this.upgradeService.postDeviceFile(formData, (res) => {
            })
　　　　　　
        }
    }

　　下载：

 <a class="iconfont  icon-xiazai1" @click="downModule(list.id,list.name)" title="下载"></a>

　　

    downModule(id,name){
      download(id).then(
          response => {
            let blob = new Blob([response.data], {
              type: 'application/vnd.ms-excel'
            })
            let fileName = name + '.lua'
            if (window.navigator.msSaveOrOpenBlob) {
              navigator.msSaveBlob(blob, fileName)
            } else {
              var link = document.createElement('a')
              link.href = window.URL.createObjectURL(blob)
              link.download = fileName
              link.click()
              //释放内存
              window.URL.revokeObjectURL(link.href)
            }
          },
          err => {
            reject(err)
          })
    },