在react中添加来自图表js-2的圆环图中的文本

import Chart from 'chart.js';

componentDidMount() {
  const canvas = this.refs.canvas;
  const ctx = canvas.getContext('2d');
  // 在这里使用ctx绘制圆环图
}

componentDidMount() {
  const canvas = this.refs.canvas;
  const ctx = canvas.getContext('2d');

  new Chart(ctx, {
    type: 'doughnut',
    data: {
      labels: ['Label 1', 'Label 2', 'Label 3'],
      datasets: [{
        data: [10, 20, 30],
        backgroundColor: ['red', 'green', 'blue']
      }]
    },
    options: {
      // 配置选项
    }
  });
}

componentDidMount() {
  const canvas = this.refs.canvas;
  const ctx = canvas.getContext('2d');

  new Chart(ctx, {
    type: 'doughnut',
    data: {
      labels: ['Label 1', 'Label 2', 'Label 3'],
      datasets: [{
        data: [10, 20, 30],
        backgroundColor: ['red', 'green', 'blue']
      }]
    },
    options: {
      // 配置选项
    }
  });

  ctx.font = '20px Arial';
  ctx.fillStyle = 'black';
  ctx.textAlign = 'center';
  ctx.fillText('Text', canvas.width / 2, canvas.height / 2);
}