vue整合echarts

下载并引入echarts

1.下载

npm i echarts -S

2.引入vue

import * as echarts from 'echarts';

3.使用

//<div id="main">的id对应
document.getElementById('main');

4.用一个柱状图和一个饼图举例

<template>
  <div>
    <el-row :gutter="10" style="margin-bottom: 40px">
      <el-col :span="6">
        <el-card>
          <div style="color:#409EFF;"><i class="el-icon-user">i> 用户总数div>
          <div style="padding: 10px 0;text-align: center;font-weight: bold">
            100
          div>
        el-card>
      el-col>
      <el-col :span="6">
        <el-card>
          <div style="color:#f56c6c;"><i class="el-icon-s-data">i> 销售总量div>
          <div style="padding: 10px 0;text-align: center;font-weight: bold">
            $ 100,000,000
          div>
        el-card>
      el-col>
      <el-col :span="6">
        <el-card>
          <div style="color:#67c23a;"><i class="el-icon-coin">i> 收益总额div>
          <div style="padding: 10px 0;text-align: center;font-weight: bold">
            $ 300,000
          div>
        el-card>
      el-col>
      <el-col :span="6">
        <el-card>
          <div style="color:#e6a23c;"><i class="el-icon-location-information">i> 景点总数div>
          <div style="padding: 10px 0;text-align: center;font-weight: bold">
            100,000
          div>
        el-card>
      el-col>
    el-row>
	<--饼图-->
    <el-row>
      <el-col :span="12">
        <div id="main" style="width: 500px;height: 400px">div>
      el-col>
      <--柱状图-->
      <el-col :span="12">
        <div id="bar" style="width: 500px;height: 400px">div>
      el-col>
    el-row>
  div>
template>

<script>
import * as echarts from 'echarts';

export default {
  name: "Home",
  // el:"#main",
  data() {
    return {}
  },
  mounted() {//页面元素渲染完之后再触发
    var chartDom = document.getElementById('main');
    var myChart = echarts.init(chartDom);
    var option;

    option = {
      title: {
        text: 'Referer of a Website',
        subtext: 'Fake Data',
        left: 'center'
      },
      tooltip: {
        trigger: 'item'
      },
      legend: {
        orient: 'vertical',
        left: 'left'
      },
      series: [
        {
          name: 'Access From',
          type: 'pie',
          radius: '50%',//调整饼图大小
          
          label: {
            normal: {
              show: true,
              position: 'left',
              textStyle: {
                fontWeight: 100,
                fontSize: 14
              },
              formatter: '{d}%'
            }
          },//lable用来显示饼图百分比
          data: [],//后端数据传入这里
          emphasis: {
            itemStyle: {
              shadowBlur: 10,
              shadowOffsetX: 0,
              shadowColor: 'rgba(0, 0, 0, 0.5)'
            }
          }
        }
      ]
    };
    var barChartDom = document.getElementById('bar');
    var barMyChart = echarts.init(barChartDom);
    var barOption;

    barOption = {
      xAxis: {
        type: 'category',
        data: ['第一季度', '第二季度', '第三季度', '第四季度']//相当于柱状图的x轴的值
      },
      yAxis: {
        type: 'value'
      },
      series: [
        {
          data: [],//传入后端数据
          type: 'line'
        }
      ]
    };
    this.request.get('/admin/echarts/user').then((res) => {
      barOption.series[0].data = res.data//柱状图数据注入
      barMyChart.setOption(barOption)
      option.series[0].data = [//饼图数据注入
        {name: '第一季度', value: res.data[0]},
        {name: '第二季度', value: res.data[1]},
        {name: '第三季度', value: res.data[2]},
        {name: '第四季度', value: res.data[3]}
      ]
      myChart.setOption(option)
    })
  }

}
script>

5.后端相关代码

@RestController
@RequestMapping("/admin/echarts")
public class EchartsController {

    @Autowired
    private UserService userService;

    @GetMapping("/example")
    public R get(){//测试代码，固定值
        HashMap<String, Object> map = new HashMap<>();
        map.put("x", CollectionUtil.newArrayList("Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"));
        map.put("y",CollectionUtil.newArrayList(150, 230, 224, 218, 135, 147, 260));
        return new R(true,map);
    }

    @GetMapping("/user")
    public R members(){//从数据库中获取
        List<User> list = userService.list();
        int q1 = 0;
        int q2 = 0;
        int q3 = 0;
        int q4 = 0;
        for (User user : list) {
            String createTime = user.getCreateTime();
            Date date = DateTimeUtil.formatTime(createTime);
            Quarter quarter = DateUtil.quarterEnum(date);
            switch (quarter){
                case Q1: q1+=1;break;
                case Q2: q2+=1;break;
                case Q3: q3+=1;break;
                case Q4: q4+=1;break;
                default:break;
            }
        }
        return new R(true,CollectionUtil.newArrayList(q1,q2,q3,q4));
    }
}