总结（2022.02.24）

2月24日总结

1.html标签使用多个class

https://blog.csdn.net/Lcl1562871004/article/details/84870108

2.org.apache.ibatis.executor.ExecutorException: A query was run and no Result Maps were found for the Mapped Statement ‘nuc.edu.zxy_test2.dao.NoticeMapper.selectByNid’. It’s likely that neither a Result Type nor a Result Map was specified.

原因：没写结果类型

3.将数据库中日期显示在前端时的格式转化

https://blog.csdn.net/qq_38986609/article/details/87863221

4.th:value 和 th:text区别

5.2022-02-24 11:27:33.747 WARN 12580 — [nio-8080-exec-4] .w.s.m.s.DefaultHandlerExceptionResolver : Resolved [org.springframework.web.method.annotation.MethodArgumentTypeMismatchException: Failed to convert value of type ‘java.lang.String’ to required type ‘int’; nested exception is java.lang.NumberFormatException: For input string: “/doDelete?nid=1”]

删除应该注意：

6.报错如下

解决方法：