<el-upload
class="fr dragarea"
ref="uploadMutiple"
action=""
drag
:show-file-list="false"
:before-upload="beforeUpload"
>
<el-button type="primary" size="small" >上传</el-button>
</el-upload>
</div>
beforeUpload(file) {// 这里的file就可以直接放到formdata格式保存
const fd = new FormData();
fd.append("file", file);
//这里就可以访问接口吧这个fd作为二进制文件传过去了
}
在axios里面设置config.headers['Content-Type'] = "multipart/form-data; boundary=something";