uni，小程序实现多图上传，无卡顿

最新推荐文章于 2025-06-27 09:21:19 发布

原创最新推荐文章于 2025-06-27 09:21:19 发布 · 196 阅读

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#小程序 #javascript #前端

该代码段展示了在uni-app中实现图片上传的功能，包括选择图片、上传到服务器并更新图片列表。通过`uni.showLoading`和`uni.hideLoading`来显示和隐藏加载提示，`uni.uploadFile`用于上传文件，`UpdataImg`和`UpImgResolve`两个导出函数协同完成批量图片上传，成功后将图片URL添加到列表。

 export function UpdataImg(file,callback) {
	var  that = this
	var ImgArr = []
	uni.showLoading({
		title: '上传中...',
	})
	 for(var i in file){
	    UpImgResolve(file[i],i).then((res)=>{
			ImgArr.push(res.img)
             // 当需要上传的文件上传完，返回上传成功的数组
			if(ImgArr.length == file.length){
					callback(ImgArr)
					uni.hideLoading();
			}
		
		})
	 }
 }

 export function UpImgResolve (file,index){
	 return new Promise(function(resolve, reject) {
	 	  uni.uploadFile({
	 		url: config + "upload/save-img", //后台提供的上传地址
	 		filePath: file,
	 		name: 'file',
	 		formData: {
	 			'file': file
	 		},
	 		success: function(uploadFileRes) {
				var date ={
					index:index,
					img:uploadFileRes.data
				}
	 			resolve(date)
	 		},error(res){
				uni.hideLoading();
			}
	 	});
	 })
 }

 export default {
 	UpdataImg
 }

html 页面代码

			upload_taps(index) {
				let that = this
				if (this.CloseList[index].imagesList.length == 0) {
					uni.chooseImage({
						count: 5,
						sourceType: ['album'],
						success: (chooseImageRes) => {
							const tempFilePaths = chooseImageRes.tempFilePaths;
							this.CloseList[index].imgesUpDtaList = chooseImageRes.tempFilePaths
							that.UpListTwo(index, this.CloseList[index].imgesUpDtaList)
						}
					});
				} else {
					var count = 5 - Number(this.CloseList[index].imagesList.length)
					uni.chooseImage({
						count: count,
						sourceType: ['album'],
						success: (chooseImageRes) => {
							const tempFilePaths = chooseImageRes.tempFilePaths;
							this.CloseList[index].imgesUpDtaList = chooseImageRes.tempFilePaths
							that.UpListTwo(index, this.CloseList[index].imgesUpDtaList)
						}
					});
				}
			},
			// 上传
			// 上传
			UpListTwo(index, file) {
				var that = this
				that.$utils.UpdataImg(file, this.id, (res) => {
					if (this.CloseList[index].imagesList.length <= 5) {
						this.CloseList[index].imagesList = this.CloseList[index].imagesList.concat(res)
					}
				})
			},