如何在Reactjs中重新加载画布图像

npm install react react-dom

import React, { Component } from 'react';

class CanvasImage extends Component {
  constructor(props) {
    super(props);
    this.state = {
      imageUrl: 'path/to/image.jpg'
    };
  }

  render() {
    return (
      <div>
        <canvas id="canvas"></canvas>
        <img src={this.state.imageUrl} alt="Image" />
      </div>
    );
  }
}

export default CanvasImage;

componentDidMount() {
  const canvas = document.getElementById('canvas');
  const context = canvas.getContext('2d');
  const image = new Image();

  image.onload = () => {
    context.drawImage(image, 0, 0);
  };

  image.src = this.state.imageUrl;
}

handleReloadImage = () => {
  this.setState({ imageUrl: 'path/to/new-image.jpg' });
}

render() {
  return (
    <div>
      <canvas id="canvas"></canvas>
      <img src={this.state.imageUrl} alt="Image" />
      <button onClick={this.handleReloadImage}>Reload Image</button>
    </div>
  );
}