实现效果如图

老规矩先创建占位子的div

<div id="pieReport" style="width: 400px;height: 300px;"></div>

然后引入Echarts,并且模拟数据

export default {
  name: "",
  data() {
    return {
      charts: "",
      opinion: ["及格人数", "未及格人数"],
      opinionData: [
        { value: 12, name: "及格人数", itemStyle: "#1ab394" },
        { value: 18, name: "未及格人数", itemStyle: "#79d2c0" }
      ]
    };
  },
}

在methods中定义方法

drawPie(id) {
      this.charts = this.$echarts.init(document.getElementById(id));
      this.charts.setOption({
        tooltip: {
          trigger: "item",
          formatter: "{a}<br/>{b}:{c} ({d}%)"
        },
        legend: {
          bottom: 10,
          left: "center",
          data: this.opinion
        },
        series: [
          {
            name: "状态",
            type: "pie",
            radius: "65%",
            center: ["50%", "50%"],
            avoidLabelOverlap: false,
            itemStyle: {
              emphasis: {
                shadowBlur: 10,
                shadowOffsetX: 0,
                shadowColor: "rgba(0, 0, 0, 0.5)"
              },
              color: function(params) {
                //自定义颜色
                var colorList = ["#1ab394", "#79d2c0"];
                return colorList[params.dataIndex];
              }
            },
            data: this.opinionData
          }
        ]
      });
    },

在mounted中调用

mounted() {
    this.$nextTick(function() {
      this.drawPie("pieReport");
    });
  }

懒得写了注释了,将就看吧