锋哥原创的uniapp微信小程序投票系统实战：

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文件选择上传组件 uni-file-picker 扩展组件 安装

uni-file-picker 文件选择上传 - DCloud 插件市场

日期选择器uni-datetime-picker组件 安装

uni-datetime-picker 日期选择器 - DCloud 插件市场

iconfont小图标

iconfont-阿里巴巴矢量图标库

iconfont.css

@font-face {font-family: 'iconfont';  /* Project id 3888696 */src: url('//at.alicdn.com/t/c/font_3888696_rjermxmgmb.woff2?t=1680049466852') format('woff2'),url('//at.alicdn.com/t/c/font_3888696_rjermxmgmb.woff?t=1680049466852') format('woff'),url('//at.alicdn.com/t/c/font_3888696_rjermxmgmb.ttf?t=1680049466852') format('truetype');
}.share {font-family: iconfont;margin-left: 20rpx;font-size: 26rpx;color: blue;
}.uploadImg{font-family: iconfont;font-size: 56rpx;color: #acacac;
}.smallUploadImg{font-family: iconfont;font-size: 36rpx;color: #acacac;
}.removeOption{font-family: iconfont;font-size: 38rpx;color: red;padding-right: 10px;
}.addOption{font-family: iconfont;font-size: 38rpx;padding-right: 10px;
}.chooseOption{font-family: iconfont;font-size: 26rpx;
}.voteListItem{font-family: iconfont;font-size: 26rpx;
}.voteManageItem{font-family: iconfont;font-size: 46rpx;color: blue;padding-bottom: 8px;
}

前端代码：

<template><view class="word_vote"><view class="cover_img"><view class="title_tip"><view class="cover">封面图（可以不上传）</view><view class="tip">（ 宽高比：650 × 300 ）</view></view><view class="upload_img"><uni-file-picker @select="selectCoverFileFunc($event)":auto-upload="false" limit="1":del-icon="false" disable-preview file-mediatype="image" :imageStyles="coverImageStyles"><view class="upload"><text class="uploadImg">&#xe727;</text></view></uni-file-picker></view></view><view class="basic_settings"><view class="title_tip"><view class="title">基础设置</view></view><view class="settings"><view class="title"><input type="text"  v-model="title" placeholder="填写投票标题"  placeholder-style="color:#bababa;font-size:16px"/></view><view class="explanation"><textarea v-model="explanation" placeholder="投票说明 (非必填)" placeholder-style="color:#bababa;font-size:14px"></textarea></view></view></view><view class="vote_options_settings"><view class="title_tip"><view class="title">投票选项设置</view></view><view class="option_list"><view class="option_item" v-for="(item,index) in options" :key="item.id"><text class="removeOption" @click="removeOption(item.id)">&#xe618;</text><input type="text" v-model="item.name" placeholder="输入选项名称" placeholder-style="color:#bababa;font-size:14px"></view></view><view class="option_add" @click="addOption()"><text class="addOption">&#xe660;</text><text>添加选项</text></view></view><view class="vote_rules_settings"><view class="title_tip"><view class="title">投票规则设置</view></view>	<view class="rule_list"><view class="rule_item"><text>投票截止时间</text><view ><uni-datetime-picker :border="false" :clear-icon="false" v-model="voteEndTime":start="startDate":end="endDate"></uni-datetime-picker></view></view></view></view></view><view class="vote_btn" ><button type="primary" @click="submitVote">发起投票</button></view>
</template><script>import {getBaseUrl, requestUtil} from "../../utils/requestUtil.js"import {isEmpty} from "../../utils/stringUtil.js"import {timeFormat} from "../../utils/dateUtil.js"export default{data(){const curDate=new Date();const vv=new Date(curDate.getTime()+24*60*60*1000);return{title:'',explanation:'',coverImageFileName:'',coverImageStyles: {width:"700rpx",height:"400rpx",border:false},voteEndTime:timeFormat(vv),options:[{id:1,name:''},{id:2,name:''}]}},computed:{startDate(){return new Date();},endDate(){const curDate=new Date();const vv=new Date(curDate.getTime()+24*60*60*1000*365);return vv;}},methods:{addOption:function(){var option={id:this.options[this.options.length-1].id+1,name:''}this.options.push(option);},removeOption:function(id){const index=this.options.findIndex(v=>v.id===id)this.options.splice(index,1);},selectCoverFileFunc:function(e){console.log(e.tempFilePaths[0])uni.uploadFile({header:{token:uni.getStorageSync("token")},url:getBaseUrl()+"/vote/uploadCoverImage",filePath:e.tempFilePaths[0],name:"coverImage",success: (res) => {let result=JSON.parse(res.data);if(result.code==0){this.coverImageFileName=result.coverImageFileName;}}})}}}
</script><style lang="scss">@import "/common/css/iconfont.css";.word_vote{padding: 20px;padding-bottom: 70px;.cover_img{.title_tip{margin-left: 10rpx;font-size: 26rpx;color: gray;display: flex;justify-content: space-between;}.upload_img{border-radius: 5px;margin-top: 20rpx;width:100%;height: 360rpx;background-color: white;display: flex;align-items: center;justify-content: center;.upload{margin: 10rpx;background-color: #f4f5f7;width:90%;height: 80%;display: flex;align-items: center;justify-content: center;}}}.basic_settings{margin-top: 20px;.title_tip{margin-left: 10rpx;font-size: 26rpx;color: gray;margin-bottom: 10px;.title{}}.settings{border-radius: 5px;background-color: white;.title{padding: 10px;input{font-size: 1.3rem;border-bottom: 1px solid #e4e4e4;padding-bottom: 15px;}}.explanation{padding: 10px;textarea{height: 100px;}}}}.vote_options_settings{margin-top: 20px;.title_tip{margin-left: 10rpx;font-size: 26rpx;color: gray;margin-bottom: 10px;.title{}}.option_list{.option_item{margin-top: 10px;border-radius: 5px;background-color: white;padding: 10px;display: flex;}}.option_add{margin-top: 10px;border-radius: 5px;background-color: white;padding: 10px;display: flex;color:blue;font-size:14px}}.vote_rules_settings{margin-top: 20px;.title_tip{margin-left: 10rpx;font-size: 26rpx;color: gray;margin-bottom: 10px;.title{}}.rule_list{border-radius: 5px;background-color: white;.rule_item{display: flex;justify-content: space-between;padding: 12px;border-bottom: 1px solid #e4e4e4;font-size: 28rpx;align-items: center;height: 45rpx;}}}}.vote_btn{height: 120rpx;width: 100%;background-color: white;position: fixed;bottom: 0;border-top: 1px solid #e4e4e4;button{margin: 10px;}}
</style>

后端：

coverImagesFilePath: D://uniapp/coverImgs/

封面上传：

/*** 上传封面图片* @param coverImage* @return* @throws Exception*/
@RequestMapping("/uploadCoverImage")
public Map<String,Object> uploadCoverImage(MultipartFile coverImage)throws Exception{System.out.println("filename:"+coverImage.getName());Map<String,Object> resultMap=new HashMap<>();if(!coverImage.isEmpty()){// 获取文件名String originalFilename = coverImage.getOriginalFilename();String suffixName=originalFilename.substring(originalFilename.lastIndexOf("."));String newFileName= DateUtil.getCurrentDateStr()+suffixName;FileUtils.copyInputStreamToFile(coverImage.getInputStream(),new File(coverImagesFilePath+newFileName));resultMap.put("code",0);resultMap.put("msg","上传成功");resultMap.put("coverImageFileName",newFileName);}return resultMap;
}