golang http 文件下载

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c.Writer.WriteHeader(http.StatusOK)
c.Header("Content-Disposition", fmt.Sprintf("attachment; filename=%s.bin", "foo"))
c.Header("Content-Type", "application/octet-stream")
c.Header("Content-Transfer-Encoding", "binary")
c.Header("Accept-Ranges", "bytes")
c.Header("Connection", "keep-alive")
c.Header("Content-Length", fmt.Sprintf("%d", len(paramsBytes)))

c.Writer.Write(paramsBytes)

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import fileDownload from 'js-file-download'
exportCsv (): void {
  Axios.get('/export',
    {
      headers: {
        Authorization: 'Bearer ' + localStorage.getItem('JWT_TOKEN')
      },
      params: {
        foo: this.foo,
        start: this.dateStart + ' ' + this.timeStart,
        end: this.dateEnd + ' ' + this.timeEnd
      },
      responseType: 'blob'
    }).then(response => {
    const fileName = response.headers['content-disposition'].match(/filename=(.*)/)[1]
    console.log('data: ' + response.data)
    fileDownload(response.data, fileName)
  }).catch(error => {
    console.log({ error })
  })
}

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// Ajax 文件下载
jQuery.download = function(url, data, method){
    // 获得url和data
    if( url && data ){
        // data 是 string 或者 array/object
        data = typeof data == 'string' ? data : jQuery.param(data);
        // 把参数组装成 form 的  input
        var inputs = '';
        jQuery.each(data.split('&'), function(){
            var pair = this.split('=');
            inputs+='<input type="hidden" name="'+ pair[0] +'" value="'+ pair[1] +'" />';
        });
        // request发送请求
        jQuery('<form action="'+ url +'" method="'+ (method||'post') +'">'+inputs+'</form>')
        .appendTo('body').submit().remove();
    };
};