UniApp Vue3 开发视频聊天直播一体化商城App

本文介绍如何使用2025年最新技术栈，包括uni-app、Vue3、Pinia2、uv-ui和nvue，来搭建一个集小视频、聊天和直播功能于一体的跨平台商城App系统。该项目支持编译并运行到Web、各小程序端以及App端，实现一套代码多端部署。

项目采用HbuilderX 4.66作为主要开发工具，技术框架基于Uniapp与Vue3，并集成Vite5构建工具以提升开发效率。UI组件方面，选用了uv-ui和vk-uview库；弹框组件使用了专为uniapp封装的多端兼容组件uaPopup；自定义导航栏和标签栏组件（uaNavbar和uaTabbar）增强了界面定制能力。状态管理采用Pinia2，并结合pinia-plugin-unistorage插件实现本地缓存持久化。

项目框架基于uniapp与vue3构建，采用Vue3的setup语法进行开发，确保了代码的现代性和可维护性。

短视频模块实现

短视频模块整体分为三个部分：顶部固定标签栏（tabs）、中间视频播放区以及底部视频信息浮层。通过swiper组件实现全屏沉浸式的上下滑动切换，提供丝滑的交互体验，并集成了迷你拖拽进度条来控制播放。

以下是一个核心代码示例，展示了视频播放器、浮层信息展示及交互控件的布局与逻辑：

<ua-layout>
    <view class="ua__swipervideo flex1">
        <swiper
            class="ua__swipervideo-wrap flex1"
            :current="currentVideo"
            vertical
            :circular="true"
            :duration="200"
            @change="handleChange"
            @transition="handleTransition"
        >
            <swiper-item v-for="(item, index) in videoList" :key="index">
                <video
                    class="ua__swipervideo-player flex1"
                    :id="'uplayer' + index"
                    :src="item.src"
                    :danmu-list="item.danmu"
                    :enable-danmu="true"
                    :controls="false"
                    :loop="true"
                    :autoplay="index == currentVideo"
                    :show-center-play-btn="false"
                    object-fit="contain"
                    @click="handleClickVideo"
                    @play="isPlaying=true"
                    @timeupdate="handleTimeUpdate"
                    :style="{'width': `${winWidth}px`, 'height': `${winHeight}px`}"
                >
                </video>

                <!-- 浮层模块 -->
                <view class="ulive__video-float__info flexbox flex-col">
                    <view class="flexbox flex-row flex-alignb">
                        <!-- 左侧 -->
                        <view class="vdinfo__left flex1 flexbox flex-col">
                            <view class="ltrow danmu flexbox" @click="handleOpenDanmu"><text class="danmu-txt">弹</text><uv-icon class="ico" name="edit-pen" color="#fff" size="14" /></view>
                            <view class="ltrow"><text class="ait">@{{item.author}}</text></view>
                            <view class="ltrow"><text class="desc">{{item.desc}}</text></view>
                        </view>
                        <!-- 右侧操作栏 -->
                        <view class="vdinfo__right flexbox flex-col">
                            <view class="rtbtn avatar flexbox flex-col">
                                <view class="ubox"><image class="uimg" :src="item.avatar" mode="aspectFill" /></view>
                                <view class="btn flexbox" :class="{'active': item.isFollow}" @click="handleFollow(index)"><uv-icon :name="item.isFollow ? 'checkmark' : 'plus'" :color="item.isFollow ? '#ff007f' : '#fff'" size="11" /></view>
                            </view>
                            <view class="rtbtn flexbox flex-col" @click="handleLiked(index)"><uv-icon name="heart-fill" :color="item.isLike ? '#ff007f' : '#fff'" size="40" /><text class="num">{{item.likeNum+(item.isLike ? 1 : 0)}}</text></view>
                            <view class="rtbtn flexbox flex-col" @click="handleOpenComment(index)"><uv-icon name="chat-fill" color="#fff" size="40" /><text class="num">{{item.replyNum}}</text></view>
                            <view class="rtbtn flexbox flex-col"><uv-icon name="star-fill" color="#fff" size="40" /><text class="num">{{item.starNum}}</text></view>
                            <view class="rtbtn flexbox flex-col" @click="handleOpenShare(index)"><uv-icon name="share-fill" color="#fff" size="40" /><text class="num">{{item.shareNum}}</text></view>
                        </view>
                    </view>
                </view>
            </swiper-item>
        </swiper>

        <!-- 固定tabs(脱离滑动区) -->
        <view class="ulive__video-header__tabs" :style="{'margin-top': `${menuBarT}px`}">
            <uv-tabs :current="tabsCurrent" :list="tabsList" />
        </view>

        <!-- 播放暂停按钮 -->
        <view v-if="!isPlaying" class="ua__swipervideo-playbtn" :style="{'left': `${winWidth/2}px`, 'top': `${winHeight/2}px`}" @click="handleClickVideo">
            <text class="ua__swipervideo-playico welive-icon welive-icon-play nvueicon"></text>
        </view>

        <!-- 播放mini进度条 -->
        <view v-if="sliderValue > 0" class="ua__swipervideo-slider">
            <slider
                :value="sliderValue"
                :step="sliderStep"
                :max="sliderMaxValue"
                activeColor="#fff"
                backgroundColor="rgba(255,255,255,.2)"
                block-color="#fff"
                block-size="6"
                @changing="onSliderChanging"
                @change="onSliderChange"
            />
        </view>
    </view>

    <template #footer>
        <ua-tabbar bgcolor="transparent" color="rgba(255,255,255,.7)" :border="false" :dock="false" transparent z-index="1000" />
    </template>
</ua-layout>

播放进度控制通过监听视频的timeupdate事件实现，滑动条拖动时会暂停播放，拖动结束后跳转到指定位置并继续播放。相关逻辑代码如下：

// 监听播放进度条
const handleTimeUpdate = (e) => {
    let { currentTime, duration } = e.detail
    sliderValue.value = currentTime
    sliderMaxValue.value = duration
    sliderStep.value = currentTime / duration
}

// 滑动条拖动中
const onSliderChanging = (e) => {
    sliderValue.value = e.detail.value
    handlePause()
}

// 滑动条拖动结束
const onSliderChange = (e) => {
    sliderValue.value = e.detail.value
    let video = getVideoContext()
    if(!video) return
    video.seek(sliderValue.value)
    handlePlay()
}

聊天模块实现

聊天模块基于之前开发的uniapp+vue3仿微信聊天项目迁移而来，提供了完整的即时通讯界面和交互功能，包括消息列表、发送框、表情支持等，能够无缝集成到当前商城App中，为用户提供流畅的沟通体验。

直播模块实现

直播模块结构分为顶部主播信息区、中间直播流视频播放区、滚动消息区（显示用户加入、送礼、商品讲解等信息）以及底部工具栏。该模块支持全屏切换多个直播流，并提供了丰富的互动元素。

以下代码展示了直播界面的主要布局结构，包括视频播放、浮层信息展示和交互控件：

<ua-layout>
    <view class="ua__swipervideo flex1">
        <swiper
            class="ua__swipervideo-wrap flex1"
            :current="currentLive"
            vertical
            @change="handleChange"
        >
            <swiper-item v-for="(item, index) in liveList" :key="index">
                <video
                    class="ua__swipervideo-player flex1"
                    :id="'uplayer' + index"
                    :src="item.src"
                    :controls="false"
                    :loop="true"
                    :autoplay="index == currentLive"
                    :show-center-play-btn="false"
                    object-fit="contain"
                    :style="{'width': `${winWidth}px`, 'height': `${winHeight}px`}"
                >
                </video>

                <!-- 浮层模块 -->
                <swiper class="ulive__swiperscreen flex1" :current="1">
                    <!-- 清屏 -->
                    <swiper-item>
                        第一屏
                    </swiper-item>
                    <swiper-item>
                        <!-- 顶部区域 -->
                        <view class="ulive__headlayer" :style="{'top': menuBarT+'px'}">
                            <!-- logo+关注 -->
                            <view class="ulive__hd-liveinfo flexbox flex-row flex-alignc">
                                <view class="ulive__hd-avatar ulive__mask flex-alignc">
                                    <image class="logo" :src="item.logo" mode="widthFix" />
                                    <view class="flex1 flexbox flex-col ml-10">
                                        <text class="name">{{item.name}}</text>
                                        <text class="zan">{{item.likeNum}}本场点赞</text>
                                    </view>
                                    <view class="btn flexbox flex-row flex-alignc" :class="{'active': item.isFollow}" @click="handleFollow(index)"><text class="btntext" :class="{'active': item.isFollow}">{{item.isFollow ? '已关注' : '关注'}}</text></view>
                                </view>
                                <view class="ulive__hd-onlineuser flex1">
                                    <uv-icon name="close" color="#fff" @click="handleLiveQuit" />
                                </view>
                            </view>
                            <view class="ulive__hd-livewrap flexbox flex-row">
                                <view class="ulive__hd-livewrap__left flex1 flexbox flex-col">
                                    <view class="ulive__hd-livewrap__tags flexbox flex-row">
                                        <view class="ulive__roundwrap ulive__mask">
                                            <uv-icon name="shopping-cart" color="#ffdd1a" /><text class="ulive__roundtext">服饰鞋包榜第1名</text>
                                        </view>
                                        <view class="ulive__roundwrap ulive__mask ml-10">
                                            <uv-icon name="level" color="#ffdd1a" /><text class="ulive__roundtext">小时榜</text>
                                        </view>
                                    </view>
                                    <!-- 红包+福袋倒计时 -->
                                    <view class="ulive__hd-livewrap__redpacket flexbox flex-row">
                                        <view class="ulive__redpacket-item ulive__mask" @click="handleOpenRedpacket(1)">
                                            <image class="ulive__redpacket-image" src="/static/icon-fudai.png" mode="widthFix" /><text class="ulive__redpacket-time">04:49</text>
                                        </view>
                                        <view class="ulive__redpacket-item ulive__mask" @click="handleOpenRedpacket(2)">
                                            <image class="ulive__redpacket-image" src="/static/icon-hb.png" mode="widthFix" /><text class="ulive__redpacket-time">04:49</text>
                                        </view>
                                        <view class="ulive__redpacket-item ulive__mask center">
                                            <image class="ulive__redpacket-image" src="/static/icon-rotate.png" mode="widthFix" /><text class="ulive__redpacket-time">04:49</text>
                                        </view>
                                    </view>
                                </view>
                                <view class="ulive__hd-livewrap__right flexbox flex-col">
                                    <view class="ulive__roundwrap ulive__mask mr-20">
                                        <uv-icon name="kefu-ermai" color="#fff" /><text class="ulive__roundtext ml-5">后台</text>
                                    </view>
                                </view>
                            </view>
                        </view>

                        <!-- 底部区域 -->
                        <view class="ulive__footlayer">
                            <!-- 商品提示层 -->
                            <view class="ulive__ft-livewrap-placeholder animated fadeIn">
                                <view class="ulive__ft-livewrap-hotbuy flexbox flex-row">
                                    <image class="gimg" :src="item.poster" mode="aspectFill" />
                                    <view class="ginfo flex1">
                                        <view class="flexbox flex-row"><text class="user c-ffdd1a">Andy</text><text class="c-fff">等{{item.saleNum}}人在购买</text></view>
                                        <text class="gdesc clamp1">{{item.desc}}</text>
                                    </view>
                                    <view class="btn"><text class="btntext">去购买</text></view>
                                </view>
                            </view>
                            <!-- 加入直播间/送礼物提示 -->
                            <view class="ulive__ft-livewrap-animateview flexbox flex-col">
                                <view class="ulive__ft-livewrap-animatejoin ulive__ft-livewrap-placeholder">
                                    <view v-if="joinRoomData" class="ulive__ft-livewrap-joinroom"><text class="ulive__ft-livewrap-joinroom__text">欢迎{{joinRoomData}}加入了直播间</text></view>
                                </view>

                                <!-- 送礼物 -->
                                <view class="ulive__ft-livewrap-animategift ulive__ft-livewrap-placeholder">
                                    <view v-if="!isEmpty(sendGiftData)" class="ulive__ft-livewrap-activegift flexbox flex-row flex-alignc">
                                        <image class="avatar" :src="sendGiftData.avatar" />
                                        <view class="info flex1"><text class="name">{{sendGiftData.user}}</text><text class="desc">送出</text></view>
                                        <image class="gift" :src="sendGiftData.pic" />
                                    </view>
                                </view>
                            </view>
                            <!-- 聊天浮层+商品讲解 -->
                            <view class="ulive__ft-livewrap-mixinview flexbox flex-row">
                                <!-- 聊天消息 -->
                                <view class="ulive__ft-livewrap-chats flex1">
                                    <scroll-view class="ulive__ft-livewrap-chats__scrollview flex1" scroll-y show-scrollbar="false" :scroll-into-view="scrollToView" :lower-threshold="5" @scroll="handleMsgScroll" @scrolltolower="handleMsgScrollLower">
                                        <block v-for="(msgitem, msgidx) in item.message" :key="msgidx">
                                            <view v-if="msgitem.type == 'notice'" class="notice" :id="`msg-${msgitem.id}`"><view class="item"><text class="noticetext">{{msgitem.content}}</text></view></view>
                                            <view v-else-if="msgitem.type == 'gift'" class="gift" :id="`msg-${msgitem.id}`">
                                                <view class="item">
                                                    <text class="giftuser">{{msgitem.user}}</text>
                                                    <text class="gifttext">送出了{{msgitem.content}}</text>
                                                    <image class="giftimg" :src="msgitem.img" mode="widthFix" />
                                                    <text class="giftnum">x{{msgitem.num}}</text>
                                                </view>
                                            </view>
                                            <view v-else class="msg" :id="`msg-${msgitem.id}`">
                                                <view class="item">
                                                    <text v-if="msgitem.tag" class="tag">{{msgitem.tag}}</text>
                                                    <text class="user">{{msgitem.user}}</text>
                                                    <text class="text" :style="[fixTextStyle]">{{msgitem.isbuy ? '正在购买' : msgitem.content}}</text>
                                                    <text v-if="msgitem.isbuy" class="tag tag-buy">去购买</text>
                                                </view>
                                            </view>
                                        </block>
                                    </scroll-view>
                                    <view v-if="!isEmpty(msgUnread)" class="ulive__ft-livewrap-chats__unread" @click="handleMsgIsRead"><text class="c-eb4868 fs-24">{{msgUnread.length}}条新消息</text></view>
                                </view>
                                <!-- 商品讲解 -->
                                <view v-if="isVisibleGoodsTalk" class="ulive__ft-livewrap-activegoods animated fadeInRight" id="goodsTalkID">
                                    <view class="ulive__ft-livewrap-activegoods__hotsale flexbox flex-row">
                                        <image class="fimg" src="/static/icon-hot.png" mode="widthFix" /><text class="c-fff fs-32">热卖 x{{item.saleNum}}</text>
                                    </view>
                                    <swiper class="ulive__ft-livewrap-activegoods__swiper">
                                        <swiper-item>
                                            <view class="ulive__ft-livewrap-activegoods__card">
                                                <view class="gwrap" @click="toGoodsDetail">
                                                    <image class="gimg" :src="item.poster" mode="aspectFill" />
                                                    <view class="waves"><text class="c-fff fs-24">讲解中</text></view>
                                                    <view class="close" @click.stop="isVisibleGoodsTalk=false"><uv-icon name="close-circle-fill" color="rgba(0, 0, 0, .3)" size="14" /></view>
                                                </view>
                                                <view class="ginfo flexbox flex-col">
                                                    <text class="clamp1 fs-24">{{item.desc}}</text>
                                                    <text class="clamp1 fs-24 c-eb4868">7天无理由退货</text>
                                                </view>
                                                <view class="btn flexbox flex-row"><text class="flex1 c-fff fs-28">￥79.00</text><text class="qiang">抢</text></view>
                                            </view>
                                        </swiper-item>
                                    </swiper>
                                </view>
                            </view>
                            <!-- 工具栏 -->
                            <view class="ulive__ft-livewrap-toolbar flexbox flex-row">
                                <view class="editorwrap flex1 flexbox flex-row flex-alignc">
                                    <view class="flex1" @click="handleOpenChatbox"><text class="editorwrap-text">说点什么...</text></view>
                                </view>
                                <view class="btnwrap flexbox flex-row">
                                    <view class="btn flexbox" @click="handleOpenMenus"><uv-icon name="grid" color="#3c9cff" size="22" /></view>
                                    <view class="btn flexbox" @click="handleOpenGoods(item)"><uv-icon name="shopping-cart-fill" color="#ffaa00" size="24" /></view>
                                    <view class="btn flexbox" @click="handleOpenGifts"><uv-icon name="gift" color="#ff0ad3" size="22" /></view>
                                    <view class="btn flexbox"><uv-icon name="more-dot-fill" color="#efe9ff" size="18" /></view>
                                </view>
                            </view>
                        </view>
                    </swiper-item>
                </swiper>
            </swiper-item>
        </swiper>
    </view>
</ua-layout>

该模块实现了直播间的核心交互，包括用户关注、送礼、商品讲解提示以及实时聊天消息滚动，底部工具栏提供了快速访问聊天、商品和礼物的入口。通过整合这些功能，打造了一个互动性强、功能完整的直播购物环境。