1、乱码
统一编码即可：
<meta charset="UTF-8">
template = '<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns="http://www.w3.org/TR/REC-html40"><head><meta charset="UTF-8"><!--[if gte mso 9]><xml><x:ExcelWorkbook><x:ExcelWorksheets><x:ExcelWorksheet><x:Name>{worksheet}</x:Name><x:WorksheetOptions><x:DisplayGridlines/></x:WorksheetOptions></x:ExcelWorksheet></x:ExcelWorksheets></x:ExcelWorkbook></xml><![endif]--></head><body><table>{table}</table></body></html>';
2、科学计数法
style中添加样式mso-number-format:'@'; 其他样式可以百度
<td align="center" style="200px;mso-number-format:'@';" >
<div style="" title="${ po.userTel } ">${ po.userTel }</div>
</td>