gwlz/jp-mobile/pages/fileTransmit/addFileTransmit.vue

<template>
	<view class="main">
		<view class="bg-white default_title">
			<u--form :model="inputForm" labelWidth="130px" class="u-form default_title" labelPosition="left"
				ref="inputForm">
				<u-form-item label="年度" borderBottom prop="yearNum">
					<u--input readonly v-model="inputForm.yearNum" placeholder="输入年度" border="none"></u--input>
				</u-form-item>
				<u-form-item label="卡号" borderBottom prop="cardNum">
					<u--input readonly v-model="inputForm.cardNum" placeholder="输入卡号" border="none"></u--input>
				</u-form-item>
			</u--form>
		</view>
		<view class="bg-white margin-top main_info">
			<u--form :model="inputForm" :rules="rules" labelWidth="130px" class="u-form default_title"
				labelPosition="left" ref="inputForm">
				<u-form-item required label="来文机关" borderBottom prop="sendingAgency">
					<u--input v-model="inputForm.sendingAgency" placeholder="请输入来文机关" border="none"></u--input>
				</u-form-item>
				<u-form-item label="来文字号" borderBottom prop="docFontSize">
					<u--input v-model="inputForm.docFontSize" placeholder="请输入来文字号" border="none"></u--input>
				</u-form-item>
				<u-form-item label="文件来源" borderBottom prop="fileSource">
					<u--input v-model="inputForm.fileSource" placeholder="请输入文件来源" border="none"></u--input>
				</u-form-item>
				<u-form-item label="成文时间" borderBottom prop="writtenTime">
					<jp-datetime-picker :show="iswrite" v-model="inputForm.writtenTime" placeholder="选择成文时间"
						mode="date"></jp-datetime-picker>
				</u-form-item>
				<u-form-item label="收文时间" borderBottom prop="receivingTime">
					<jp-datetime-picker :show="isreceive" v-model="inputForm.receivingTime" placeholder="选择收文时间"
						mode="date"></jp-datetime-picker>
				</u-form-item>
				<u-form-item required label="内容摘要" borderBottom prop="contentSummary">
					<u--textarea v-model="inputForm.contentSummary" placeholder="请输入内容摘要" border="none"></u--textarea>
				</u-form-item>
				<u-form-item label="来文附件" prop="attachedDocumentId" labelPosition="top">
					<lsj-upload ref="lsjUpload" childId="upload1" width="250rpx" height="200rpx" :option="option"
						:debug="false" :instantly="false" @uploadEnd="onuploadEnd" @change="afterRead">
						<view class="addfile flex">
							<u-icon size="20" bold name="plus"></u-icon>
						</view>
					</lsj-upload>
					<!-- #ifdef H5 -->
					<view class="takephoto addfile flex" @click="takePhoto"> <u-icon size="20" bold
							name="camera"></u-icon>
					</view>
					<!-- #endif -->
				</u-form-item>
				<view class="text-danger" style="font-size: 12px!important;">请确保上传图片内容清晰可见,所有涉密敏感信息不得上传</view>
				<view class="other_info">
					<view class="other_pdf">
						<u-cell-group>
							<u-cell v-for="item in fileList" >
								<view slot="title">
									<u--text :lines="1" :text="item.name"></u--text>
								</view>
								<u-icon slot="value" size="28" name="trash-fill" @click="deleteFile(item)"></u-icon>
							</u-cell>
						</u-cell-group>
					</view>
				</view>
				<u-upload :fileList="imgList" @delete="deletePic" multiple :maxCount="imgList.length"
					:previewFullImage="true"></u-upload>

				<view class="submit_btn flex">
					<u-button v-if="!loading" type="primary" text="提交新增" @click="formSubmit"></u-button>
					<u-button v-if="loading" :loading="loading" type="primary" text="加载中"></u-button>
				</view>
			</u--form>
		</view>
		<u-toast ref="uToast"></u-toast>
		<u-overlay :show="loading">
			<view class="warp">
				<view class="rect"><u-button plain loading loadingText="加载中"></u-button></view>
			</view>
		</u-overlay>
	</view>
</template>

<script>
	import {
		isImageFormat
	} from "@/common/util.js"
	import BASE_URL from '@/config.js'
	import moment from "moment/moment"
	import * as $auth from "@/common/auth.js"
	import fileService from '@/api/file/fileService.js'
	import gwCirculationCard2Service from '@/api/circulation/gwCirculationCard2.js'
	export default {
		mounted() {
			gwCirculationCard2Service.getCardNum().then(data => {
				const currentYear = new Date().getFullYear();
				this.inputForm.yearNum = currentYear
				this.cardNum = data
				this.inputForm.cardNum = "[" + currentYear + "]" + data + "号"
				this.inputForm.writtenTime = moment().format('YYYY-MM-DD');
				this.inputForm.receivingTime = moment().format('YYYY-MM-DD');
			})
		},
		data() {
			return {
				imgsrc: {},
				loading: false,
				isreceive: false,
				iswrite: false,
				fileLists: [],
				files: [],
				fileList: [],
				imgList: [],
				cardNum: "",
				inputForm: {
					id: '',
					yearNum: '',
					cardNum: '',
					sendingAgency: '',
					docFontSize: '',
					fileSource: '',
					writtenTime: '',
					receivingTime: '',
					contentSummary: '',
					attachedDocumentId: '',
					remark: '',
					state: '1'
				},
				rules: {
					sendingAgency: [{
						required: true,
						message: '请输入来问机关',
						trigger: ['blur', 'change']
					}],
					contentSummary: [{
						required: true,
						message: '请输入内容摘要',
						trigger: ['blur', 'change']
					}]
				},
				// 上传接口参数
				option: {
					url: BASE_URL + '/gwfile/upload?uploadPath=filetransmit',
					name: 'file',
					header: {
						"token": $auth.getUserToken()
					},
				},
			}
		},
		methods: {

			showToast(params) {
				this.loading = false
				this.$refs.uToast.show({
					...params,
					complete() {
						params.url && uni.redirectTo({
							url: params.url
						})
					}
				})
			},
			// 删除文件
			deleteFile(item) {
				let that = this
				that.fileList = that.fileList.filter(i => !(i.url == item.url))
				that.fileLists = that.fileLists.filter(i => !(i.url == item.url))

			},
			// 删除图片
			deletePic(event) {
				let that = this
				this.imgList = this.imgList.filter(item => item.name != event.file.name)
				that.fileLists = that.fileLists.filter(i => !(i.name == event.file.name))
			},
			// 图片压缩
			compressH5(urlData, targetSizeKB, initialQuality = 1.0) {
				const maxQuality = 1.0;
				const minQuality = 0.0;
				const tolerance = 0.01; // 根据需要调整公差
				if (!urlData.url) {
					this.$set(urlData, "url", urlData.path)
				}
				let that = this
				return new Promise((resolve, reject) => {
					let binarySearch = (min, max) => {
						const midQuality = (min + max) / 2;
						uni.getImageInfo({
							src: urlData.url,
							success(res) {
								const reader = new FileReader();
								let img = new Image()
								img.src = res.path
								img.onload = function() {
									const canvas = document.createElement('canvas');
									const ctx = canvas.getContext('2d');

									canvas.width = img.width;
									canvas.height = img.height;

									ctx.clearRect(0, 0, canvas.width, canvas.height);
									ctx.drawImage(img, 0, 0, canvas.width, canvas
										.height);

									// 使用异步的 toBlob 方法
									canvas.toBlob(async (blob) => {
										const fileSizeKB = blob.size /
											1024;
										if (Math.abs(fileSizeKB -
												targetSizeKB) <
											tolerance || max - min <
											tolerance) {
											// 当前质量足够接近目标大小，使用当前质量解析
											reader.readAsDataURL(blob);
											reader.onload = () => {
												let result = that
													.uploadFilePromise(reader
														.result)
												setTimeout(() => {
													resolve(result)
												}, 300)
											}
										} else if (fileSizeKB >
											targetSizeKB) {
											// 如果文件大小太大，降低质量，继续二分查找
											binarySearch(min, midQuality);
										} else {
											// 如果文件大小太小，增加质量，继续二分查找
											binarySearch(midQuality, max);
										}
									}, urlData.type, midQuality);
								};
							}
						})
					}
					// 开始二分查找
					binarySearch(minQuality, maxQuality);
				})
			},
			// 拍照
			takePhoto() {
				let that = this
				// 调用uniapp的chooseImage API 选择图片
				uni.chooseImage({
					count: 1, // 默认9, 设置图片的数量
					sizeType: ['original', 'compressed'], // 可以指定是原图还是压缩图，默认二者都有
					sourceType: ['camera'], // 可以指定来源是相册还是相机，默认二者都有
					success: (chooseImageRes) => {
						uni.showLoading({
							title: "上传中"
						})
						const tempFilePaths = chooseImageRes.tempFiles[0];
						// 成功选择图片后进行压缩处理
						that.compressH5(tempFilePaths, 150).then(result => {
							const fileName = result.split(/[/\\=]/).pop();
							let item1 = {
								name: fileName,
								url: BASE_URL + result
							}
							let item = {
								name: fileName,
								path: result,

							}
							that.fileLists.push(item)
							that.imgList.push(item1)
							uni.hideLoading()
						})

					},
					fail: (error) => {

						uni.hideLoading()
					}
				});
			},
			// 拍照上传
			async uploadFilePromise(param) {
				return new Promise((resolve, reject) => {

					let a = uni.uploadFile({
						url: this.BASE_URL + '/gwfile/upload?uploadPath=filetransmit',
						filePath: param,
						name: 'file',
						header: {
							"token": $auth.getUserToken()
						},
						success: (res) => {
							setTimeout(() => {
								resolve(res.data)
							}, 300)
						}
					})
				});
			},
			// 新增图片
			afterRead(files) {
				uni.showLoading({
					title: "上传中"
				})
				let lists = [...files.values()]
				this.files = files
				for (let i = 0; i < lists.length; i++) {
					if (lists[i].type == 'success') continue;
					if (isImageFormat(lists[i].name) && lists[i].size > 200 * 1024) {
						this.compressAPP(lists[i], 150).then(res => {
							this.files.get(lists[i].name).file = res
							this.upload(lists[i].name)
						})
					} else {
						this.upload(lists[i].name)
					}
				}

			},
			// app图片压缩
			compressAPP(urlData, targetSizeKB, initialQuality = 1.0) {
				const maxQuality = 1.0;
				const minQuality = 0.0;
				const tolerance = 0.01; // 根据需要调整公差
				let that = this
				return new Promise((resolve, reject) => {

					let binarySearch = (min, max) => {
						const midQuality = (min + max) / 2;
						uni.getImageInfo({
							src: urlData.path,
							success: function(res) {
								let img = new Image()
								img.src = res.path
								img.onload = function() {
									const canvas = document.createElement('canvas');
									const ctx = canvas.getContext('2d');

									canvas.width = img.width;
									canvas.height = img.height;

									ctx.clearRect(0, 0, canvas.width, canvas.height);
									ctx.drawImage(img, 0, 0, canvas.width, canvas
										.height);

									// 使用异步的 toBlob 方法
									canvas.toBlob(async (blob) => {
										const fileSizeKB = blob.size / 1024;
										if (Math.abs(fileSizeKB -
												targetSizeKB) <
											tolerance || max - min <
											tolerance) {

											// 当前质量足够接近目标大小，使用当前质量解析
											const file = new File([blob], urlData
												.name, {
													type: blob.type,
													lastModified: new Date()
														.getTime(), // 使用当前时间作为最后修改时间
												});
											setTimeout(() => {
												resolve(file)
											}, 300)
										} else if (fileSizeKB >
											targetSizeKB) {
											// 如果文件大小太大，降低质量，继续二分查找
											binarySearch(min, midQuality);
										} else {
											// 如果文件大小太小，增加质量，继续二分查找
											binarySearch(midQuality, max);
										}
									}, urlData.file.type, midQuality);
								};
							},
							fail: function(err) {
								resolve(false);
							}
						});


					}
					// 开始二分查找
					binarySearch(minQuality, maxQuality);
				})
			},
			// APP手动上传
			upload(name) {
				// name=指定文件名，不指定则上传所有type等于waiting和fail的文件
				this.$refs['lsjUpload'].upload(name);
			},
			onuploadEnd(item) {
				console.log(`${item.name}已上传结束，上传状态=${item.type}`);

				// 更新当前窗口状态变化的文件
				this.files.set(item.name, item);
				let file = {
					name: item.name,
					path: item.responseText
				}
				this.fileLists.push(file)

				const fileName = item.name.split(/[/\\=]/).pop();
				if (isImageFormat(item.name)) {
					let item1 = {
						name: fileName,
						url: this.BASE_URL + item.responseText
					}
					this.imgList.push(item1)
				} else {
					let a = {
						name: fileName,
						url: this.BASE_URL + item.responseText
					}
					this.fileList.push(a)
				}
				uni.hideLoading()
				// 微信小程序Map对象for循环不显示，所以转成普通数组，
				// 如果你用不惯Map对象，也可以像这样转普通数组，组件使用Map主要是避免反复文件去重操作
				// #ifdef MP-WEIXIN
				this.wxFiles = [...this.files.values()];
				// #endif

				// 强制更新视图
				this.$forceUpdate();

				// ---可删除--演示判断是否所有文件均已上传成功
				let isAll = [...this.files.values()].find(item => item.type !== 'success');
				if (!isAll) {

				} else {
					console.log(isAll.name + '待上传');
				}

			},

			// 下载文件
			download(param) {
				fileService.download(param).then(data)
			},

			// 表单提交
			formSubmit() {
				this.loading = true
				let auditForm = Object.assign({}, this.inputForm);
				let files = []
				console.log("this.fileLists==>", this.fileLists);
				this.fileLists.forEach(item => {
					files.push(item.path)
				})
				auditForm.attachedDocumentId = files.join(",");
				auditForm.writtenTime = auditForm.writtenTime + " 00:00:00";
				auditForm.receivingTime = auditForm.receivingTime + " 00:00:00";
				auditForm.cardNum = this.cardNum
				this.$refs.inputForm.validate().then(valid => {
					if (valid) {
						gwCirculationCard2Service.save(auditForm).then((data) => {

							let param = {
								type: 'success',
								message: data,
								iconUrl: 'https://cdn.uviewui.com/uview/demo/toast/success.png',
								url: "/pages/index/index"
							}
							this.showToast(param);
						}).catch(() => {
							let param = {
								type: 'error',
								message: data,
								iconUrl: 'https://cdn.uviewui.com/uview/demo/toast/error.png',
							}
							this.showToast(param);
						})
					}
				}).catch(e => {
					this.loading = false
				})

			}

		}
	}
</script>

<style>
	.warp {
		display: flex;
		align-items: center;
		justify-content: center;
		height: 100%;
	}

	.default_title {
		padding-top: 0px;
	}

	.main_info {
		margin-top: 15px;
	}

	.u-form-item__body__right__message span {
		font-size: 12px !important;
	}

	.submit_btn {
		background-color: #fefefe;
		margin-top: 20px;
		box-shadow: none;
		margin-bottom: 20px;
	}

	.submit_btn button {
		height: 40px;
		width: 80%;
		border-radius: 50px;

	}

	.addfile {
		width: 80px;
		height: 80px;
		background-color: #eee;
		padding-left: 24%;
		margin: 10px;
	}

	.takephoto {
		padding-left: 9%;
	}

	.other_info {
		width: 100%;
	}
</style>