后端返回二进制流图片数据在前端展示

const { ok, data } =await $axios.get($urls.opcenter.teacher.getImg, {
  params: {
    ca_id: record.ca_id,
  },
  responseType: 'blob',
})
if(ok) {
  const promise = newResponse(data).text()
  promise.then(text =>{
    console.log('text: ', text)
    let result
    try{
      result =JSON.parse(text)
      console.log('result: ', result)
    } catch(e) {
      try{
        const url =window.URL.createObjectURL(data)
        $confirm({
          title: '签到二维码',
          icon: 'none',
          content: h =>(
            <div>
              <img src={url} alt="签到二维码" />{' '}
            </div>
),
        })
      } catch(e) {
        $message.error('二维码生成失败')
      }
    }
    if (result &&result.code) {
      $message.error(result.msg)
    }
  })
}