阿里云语音合成TTS nodejs sdk接入示例

官网入门流程：https://help.aliyun.com/document_detail/72138.html

安装依赖

npm i @alicloud/pop-core -S

实例化客户端

// 官方文档：https://help.aliyun.com/document_detail/72153.html?spm=a2c4g.94737.0.0.2457323fp1TvWy#554cde703a4xl
const RPCClient = require('@alicloud/pop-core').RPCClient
const ttsClient = new RPCClient({
    accessKeyId: 'xxx', // 阿里云申请
    accessKeySecret: 'xxx', // 阿里云申请
    endpoint: 'http://nls-meta.cn-shanghai.aliyuncs.com',
    apiVersion: '2019-02-28'
})

接口

router.get('/get/tts/url', async (req, res) => {
	// 获取token
	// 官方文档：https://help.aliyun.com/document_detail/72153.html?spm=a2c4g.94737.0.0.2457323fp1TvWy#554cde703a4xl
    let token;
    if(req.cookies.tts_token) {
        token = req.cookies.tts_token
    } else {
        const result = await ttsClient.request('CreateToken')
        if(result.ErrCode) {
            console.error(result)
        } else {
            token = result.Token.Id
            res.cookie('tts_token', token, { expires: new Date(result.Token.ExpireTime * 1000) })
        }
    }
    // RESTful API
    // 官方文档：https://help.aliyun.com/document_detail/94737.html?spm=a2c4g.450255.0.0.3d044919tDgkvd
    const url = `https://nls-gateway-cn-shanghai.aliyuncs.com/stream/v1/tts?appkey=xxx&token=${token}&text=${req.query.text}&format=wav&sample_rate=16000&voice=aida`
    // 转换成音频输出
    https.get(url, (response) => {
        res.setHeader('Content-Type', 'audio/mpeg')
        response.pipe(res)
    })
})

前端调用

const ttsAudio = new Audio()
ttsAudio.src = `http://localhost/get/tts/url?text=${encodeURI('你好，世界')}`
ttsAudio.play()
ttsAudio.onended = function () {
  // ...
}