vue 图片上传

<input class="file" name="file" type="file" accept="image/png,image/gif,image/jpeg" @change="certificate" @focus="hint=''"/>

certificate(e) {
    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
    let config = {
        headers: {
            'Content-Type': 'multipart/form-data'
        }
    }; //添加请求头
    this.axios.post('api/filesys/upload', param, config)
    .then(response => {
        this.images1 = null
        this.images1 = response.data.filepath;
        this.cards = " ";

    }).catch((error) => {
    this.cards = "出现错误了再次选择图片吧";
    });
},