实现代码如下：

export default {
    methods: {
        textToSpeech(text) {
            const innerAudioContext = wx.createInnerAudioContext();
            innerAudioContext.autoplay = true;
            innerAudioContext.onPlay = () => {
            console.log('开始播放');
        };
        innerAudioContext.onError = (err) => {
            console.error('播放错误:', err);
        };
        innerAudioContext.onEnded = () => {
            console.log('播放结束');
        };
        const toSpeak = encodeURI(text); // 对文本进行编码
        const url = `https://fanyi.baidu.com/text2audio?lan=zh&ie=UTF-8&spd=3&text=${toSpeak}`;
        innerAudioContext.src = url;
        innerAudioContext.play();
        }
    }
}