引入echarts

  npm install --save echarts-for-react
  npm install echarts --save //如果有报错找不到echarts模块，需要在安装一下exharts'

  //引入组件
   import ReactEcharts from 'echarts-for-react';

  //定义参数
      getoption = () =>{
               let option = {
      title: {
          text: '某站点用户访问来源',
          subtext: '纯属虚构',
          left: 'center'
      },
      tooltip: {
          trigger: 'item',
          formatter: '{a} <br/>{b} : {c} ({d}%)'
      },
      legend: {
          orient: 'vertical',
          left: 'left',
          data: ['直接访问', '邮件营销', '联盟广告', '视频广告', '搜索引擎']
      },
      series: [
          {
              name: '访问来源',
              type: 'pie',
              radius: '55%',
              center: ['50%', '60%'],
              data: [
                  {value: 335, name: '直接访问'},
                  {value: 310, name: '邮件营销'},
                  {value: 234, name: '联盟广告'},
                  {value: 135, name: '视频广告'},
                  {value: 1548, name: '搜索引擎'}
              ],
              emphasis: {
                  itemStyle: {
                      shadowBlur: 10,
                      shadowOffsetX: 0,
                      shadowColor: 'rgba(0, 0, 0, 0.5)'
                  }
              }
          }
      ]
  };
   return option;
  }

  //传入参数
   <ReactEcharts option={this.getOption()}  ref={node => { this.echartspie = node }}
                  onEvents={{'click': this.clickEchartsPie.bind(this)}}/>

  //监听事件的方法
  click = {
      'click': this.clickEchartsPie.bind(this)
  }
  clickEchartsPie(e){
      console.log(e)
  }