测试 - Layui

<u-upload :fileList="upload_filelist_{{_object}}" @afterRead="upload_afterread" @delete="upload_delete" :multiple="false" :maxCount="1" name="{{_object}}"></u-upload>

data() {
    return {
        upload_filelist_{{_object}}: [],
    }
},

methods: {
    upload_delete(e) {
        this[`upload_filelist_${e.name}`].splice(e.index, 1)
        // 编辑模式下如果删除，应该将form中的数据也删除
    },

async upload_afterread(e) {
        let lists = [].concat(e.file)
        let fileListLen = this[`upload_filelist_${e.name}`].length
        lists.map((item) => {
            this[`upload_filelist_${e.name}`].push({
                ...item,
                status: 'uploading',
                message: '上传中'
            })
        })
        for (let i = 0; i < lists.length; i++) {
            let result = await this.upload_promise(lists[i].url)
            result = this.__API__+'/storage/' + result
            let item = this[`upload_filelist_${e.name}`][fileListLen]
            this[`upload_filelist_${e.name}`].splice(fileListLen, 1, Object.assign(item, {
                status: 'success',
                message: '',
                url: result
            }))
            fileListLen++
        }
    },
    upload_promise(url) {
        uni.showLoading({
            title: '上传中，请稍后',
            mask: true
        })
        return new Promise((resolve, reject) => {
            let a = uni.uploadFile({
                url: `${this.__API__}/base/upload.html`,
                filePath: url,
                name: 'file',
                formData: {user: 'test'},
                success: (res) => {
                    // setTimeout(() => {
                    //     resolve(res.data.data)
                    // }, 1000)
                    // 此处要注意返回值是否是JSON格式
                    let data = JSON.parse(res.data)
                    setTimeout(() => {
                        uni.hideLoading()
                        resolve(data.data.file)
                    }, 1000)
                }
            });
        })
    },
}

------------------------ 注意事项 ------------------------
// 提交数据时获取组件中上传的图片数据
submit() {
    this.form.{{_object}} = this.upload_filelist_{{_object}}.length > 0 ? this.upload_filelist_{{_object}}[0].url : ''
    this.form.{{_object}} = this.form.{{_object}}.replace(this.__API__+'/storage/', '') // 无论添加还是编辑模式，此处都要去除添加的路径
},

// 编辑模式下显示默认值
this.upload_filelist_{{_object}} = [{url:this.__API__+'/storage/'+res.data.data.{{_object}}}]