Uniapp 小程序实现Stream流式输出

1.封装一个fetch方法 

  function fetch(params: params) {
    const task = uni.request({
      url: params.url,
      method: params.method,
      enableChunked: true, //注意配置
      data: params,
      header: params.header,
      success: (res) => {},
      fail: (err) => {},
      complete: () => {}
    })

    return task
  }

 2.使用TextDecoder转换编码

requestTask.onChunkReceived(function(res) {
  let decoder = new TextDecoder('utf-8')
  let text = decoder.decode(new Uint8Array(res.data))
  console.log(text)
})