input file上传文件

//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) => {

            })
　　　　　　
        }
    }

        let headerHttp = new HttpHeaders();
        headerHttp = headerHttp.append(‘Content-Type‘, ‘application/zip‘);
        headerHttp = headerHttp.append(‘Accept‘, ‘application/zip‘);