const downFile = (fileName:string)=>{

  // 设置响应类型为'blob'以接收二进制数据

  axios({

    method: 'get',

    url: urlIpi + '/common/download',

    params:{filename,delete:false}, // URL参数

   // responseType: 'blob', // 重要

  }).then(response => {

    download(fileName);

  }).catch(error => {

    console.error('下载失败:', error);

  });

}

const download=(fileName) => {

  let protocol = window.location.protocol

  let host = window.location.host

  let url = `${protocol}://${host}/${fileName}`;

  const a = document.createElement('a')

  a.setAttribute('download', fileName )

  a.setAttribute('target', '_blank')

  a.setAttribute('href', url)

  a.click()

}

第二种：

 <a id="downFile" href="http://xxxx.xxxx.xxx.xxxx:8081/common/download?fileName=%2F2024%2F05%2F21%2Fmetasec-license_20230521164939A003.docx" download="文件" class="app-margin-right-10">

      <i class="abc"></i>

    </a>