1.mysql 刪除語句使用別名時出錯，還需要在DELETE FROM之間添加別名
DELETE 別名 FROM 表名稱 別名 WHERE 列名稱 = 值
2.session過期跳轉到登錄頁面並跳出iframe
<script type="text/javascript">
if (window != top) {
top.location.href = location.href;
}
</script>
或者filter中
java.io.PrintWriter out = response.getWriter();
out.println("<html>");
out.println("<script>");
out.println("window.open ('/portal.jsp','_top')");
out.println("</script>");
out.println("</html>");
return;
3.HttpMessageNotReadableException 異常解決
InvalidFormatException: Can not deserialize value of type java.util.Date
解決辦法：https://blog.csdn.net/tiankongzhichenglyf/article/details/90599109