read_opc/reado-app/components/ecahrts/pie-echarts.vue

<template>
	<view class="charts-box">
		<qiun-data-charts type="pie" :eopts="opts" :chartData="chartData" :echartsH5="true" />
	</view>
</template>

<script>
	import {
		nowDate,
		timeToDate
	} from '../../utils/date.js'
	export default {
		props: {
			echartsData: Object
		},
		data() {
			return {
				chartData: {},
				//您可以通过修改 config-ucharts.js 文件中下标为 ['ring'] 的节点来配置全局默认参数，如都是默认参数，此处可以不传 opts 。实际应用过程中 opts 只需传入与全局默认参数中不一致的【某一个属性】即可实现同类型的图表显示不同的样式，达到页面简洁的需求。
				opts: {
					tooltip: {
						trigger: 'item'
					},
					legend: {
						type: 'scroll',
						orient: 'horizontal',
						top: 'bottom'
					}
				},
				timeNum: 10,
				pieTime: null
			};
		},
		mounted() {
			this.getEmit()
		},
		beforeDestroy() {
			clearInterval(this.pieTime)
			this.pieTime = null
		},
		methods: {
			getServerData() {
				const chartData = this.echartsData.chartItemList[0]
				chartData.valueTimeList = chartData.valueTimeList.map(item => {
					return item.substring(0, this.timeNum)
				})
				const {
					valueList,
					valueTimeList
				} = chartData
				let data = valueTimeList.map((item, i) => {
					return {
						name: item,
						value: valueList[i]
					}
				})
				let chartDataPie = {
					"series": [{
						'type': 'pie',
						radius: '55%',
						label: {
							show: false
						},
						data: data,
						center: ['50%', '30%']
					}]
				}
				this.chartData = chartDataPie
			},
			getEmit() {
				const {
					bucketType,
					bucketValue
				} = this.echartsData
				let time = null
				switch (bucketType) {
					case 0:
						time = 86400000 * bucketValue
						this.timeNum = 4
						break;
					case 1:
						time = 3600000 * bucketValue
						this.timeNum = 13
						break;
					case 2:
						time = 60000 * bucketValue
						this.timeNum = 16
						break;
					case 3:
						time = 1000 * bucketValue
						this.timeNum = 19
						break;
				}
				this.getServerData();
				this.pieTime = setInterval(() => {
					let chartParams = {
						id: this.echartsData.id,
						startTime: timeToDate(new Date().getTime() - 3600000),
						endTime: nowDate()
					}
					uni.$http.get('/chart/getChartById', chartParams).then(res => {
						const data = res.data
						if (data.code === 200) {
							let chartItemList = data.chartItemList;
							chartItemList.forEach((item, index) => {
								if (item.itemId === this.echartsData[
										index].itemId) {
									if (item.valueList.length !== 0) {
										//执行将新数据添加进去，旧数据去除一个
										this.echartsData[index].valueList =
											this.echartsData[index].valueList
											.concat(item.valueList)
										this.echartsData[
												index]
											.valueList.splice(0, item
												.valueList.length)
										this.echartsData[index]
											.valueTimeList = this.echartsData[
												index]
											.valueTimeList.concat(item
												.valueTimeList)
										this.echartsData[
												index]
											.valueTimeList.splice(0,
												item
												.valueTimeList.length)
									}
								}
							})
							this.getServerData()
						}
					})
				}, time)
			}
		}
	};
</script>

<style scoped>
	/* 请根据实际需求修改父元素尺寸，组件自动识别宽高 */
	.charts-box {
		width: 100%;
		height: 540rpx;
	}
</style>