vue用js-audio-recorder实现录音功能

实现一个录音上传功能，用于考试、作业中，学生可以上传朗读课文的录音。

npm i js-audio-recorder

<template>
  <div style="padding: 20px;">
    <h3>录音上传</h3>

    <div style="font-size:14px">
      <h3>录音时长：{{ recorder && recorder.duration.toFixed(4) }}</h3>
      <br>
      <el-button type="primary" @click="handleStart">开始录音</el-button>
      <el-button type="info" @click="handlePause">暂停录音</el-button>
      <el-button type="success" @click="handleResume">继续录音</el-button>
      <el-button type="warning" @click="handleStop">停止录音</el-button>
      <br>
      <br>
      <h3>
        播放时长：{{
          recorder &&
            (playTime > recorder.duration
              ? recorder.duration.toFixed(4)
              : playTime.toFixed(4))
        }}
      </h3>
      <br>
      <el-button type="primary" @click="handlePlay">播放录音</el-button>
      <el-button type="info" @click="handlePausePlay">暂停播放</el-button>
      <el-button type="success" @click="handleResumePlay">继续播放</el-button>
      <el-button type="warning" @click="handleStopPlay">停止播放</el-button>
      <el-button type="error" @click="handleDestroy">销毁录音</el-button>
      <el-button type="primary" @click="uploadRecord">上传</el-button>
    </div>
  </div>
</template>

<script>
import Recorder from 'js-audio-recorder'

export default {
  data() {
    return {
      recorder: null,
      playTime: 0,
      timer: null,
      src: null
    }
  },
  created() {
    // this.recorder = new Recorder()
  },
  methods: {
    // 开始录音
    handleStart() {
      this.recorder = new Recorder()
      // this.recorder = new Recorder({
      //   sampleBits: 8, // 采样位数，支持 8 或 16，默认是16
      //   sampleRate: 11025, // 采样率，支持 11025、16000、22050、24000、44100、48000，根据浏览器默认值，我的chrome是48000
      //   numChannels: 1 // 声道，支持 1 或 2， 默认是1
      //   // compiling: false,(0.x版本中生效,1.x增加中)  // 是否边录边转换，默认是false
      // })
      Recorder.getPermission().then(() => {
        console.log('开始录音')
        this.recorder.start() // 开始录音
      }, (error) => {
        this.$message({
          message: '请先允许该网页使用麦克风',
          type: 'info'
        })
        console.log(`${error.name} : ${error.message}`)
      })
    },
    handlePause() {
      console.log('暂停录音')
      this.recorder.pause() // 暂停录音
    },
    handleResume() {
      console.log('恢复录音')
      this.recorder.resume() // 恢复录音
    },
    handleStop() {
      console.log('停止录音')
      this.recorder.stop() // 停止录音
    },
    handlePlay() {
      console.log('播放录音')
      console.log(this.recorder)
      this.recorder.play() // 播放录音

      // 播放时长
      this.timer = setInterval(() => {
        try {
          this.playTime = this.recorder.getPlayTime()
        } catch (error) {
          this.timer = null
        }
      }, 100)
    },
    handlePausePlay() {
      console.log('暂停播放')
      this.recorder.pausePlay() // 暂停播放

      // 播放时长
      this.playTime = this.recorder.getPlayTime()
      this.time = null
    },
    handleResumePlay() {
      console.log('恢复播放')
      this.recorder.resumePlay() // 恢复播放

      // 播放时长
      this.timer = setInterval(() => {
        try {
          this.playTime = this.recorder.getPlayTime()
        } catch (error) {
          this.timer = null
        }
      }, 100)
    },
    handleStopPlay() {
      console.log('停止播放')
      this.recorder.stopPlay() // 停止播放

      // 播放时长
      this.playTime = this.recorder.getPlayTime()
      this.timer = null
    },
    handleDestroy() {
      console.log('销毁实例')
      this.recorder.destroy() // 毁实例
      this.timer = null
    },
    uploadRecord() {
      if (this.recorder == null || this.recorder.duration === 0) {
        this.$message({
          message: '请先录音',
          type: 'error'
        })
        return false
      }
      this.recorder.pause() // 暂停录音
      this.timer = null
      console.log('上传录音')// 上传录音

      const formData = new FormData()
      const blob = this.recorder.getWAVBlob()// 获取wav格式音频数据
      // 此处获取到blob对象后需要设置fileName满足当前项目上传需求，其它项目可直接传把blob作为file塞入formData
      const newbolb = new Blob([blob], { type: 'audio/wav' })
      const fileOfBlob = new File([newbolb], new Date().getTime() + '.wav')
      formData.append('file', fileOfBlob)
      const url = window.URL.createObjectURL(fileOfBlob)
      this.src = url
      // const axios = require('axios')
      // axios.post(url, formData).then(res => {
      //   console.log(res.data.data[0].url)
      // })
    }
  }
}
</script>

from:

https://recorder-api.zhuyuntao.cn/Recorder/start.html

https://blog.csdn.net/qq_34241004/article/details/108347473?ops_request_misc=&request_id=&biz_id=102&utm_term=vue%20%E9%A1%B9%E7%9B%AE%E5%AE%9E%E7%8E%B0%E5%BD%95%E9%9F%B3%E6%92%AD%E6%94%BE&utm_medium=distribute.pc_search_result.none-task-blog-2_allsobaiduweb~default-6-108347473.nonecase&spm=1018.2226.3001.4187

https://www.qb5200.com/article/541986.html