vue axios 表单提交上传图片的实例

<input class="file" name="file" type="file" accept="image/png,image/gif,image/jpeg" @change="update"/> 

let file = e.target.files[0];       let param = new FormData(); //创建form对象    param.append('file',file,file.name);//通过append向form对象添加数据    param.append('chunk','0');//添加form表单中其他数据       let config = {    headers:{'Content-Type':'multipart/form-data'}    }; //添加请求头    this.axios.post('http://upload.qiniu.com/',param,config)    .then(response=>{    console.log(response.data);    })