有关mybatis查询数据库内记录的总条数问题

报错如下：
Caused by: org.apache.ibatis.binding.BindingException: Mapper method 'com.itheima.mapper.BrandMapper.selectTotalCount attempted to return null from a method with a primitive return type (int).
	at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:102)
	at org.apache.ibatis.binding.MapperProxy$PlainMethodInvoker.invoke(MapperProxy.java:152)
	at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:85)
	at com.sun.proxy.$Proxy28.selectTotalCount(Unknown Source)
	at com.itheima.service_20211015_114634.impl.BrandServiceImpl.SelectByPage(BrandServiceImpl.java:50)
	at com.itheima.web.servlet.BrandServlet.selectByPage(BrandServlet.java:57)
	... 25 more
需要将项目内所有有关的数据都改成Integer类型（包括service等等），因为在数据库内存在查询条数为空的状态；

标签：MapperProxy,java,binding,ibatis,条数,查询数据库,mybatis,org,apache
来源： https://www.cnblogs.com/Mexcellent/p/16185023.html