当前使用版本(必须填写清楚，否则不予处理)

3.3.1.tmp

该问题是怎么引起的？(最新版上已修复的会直接close掉)

直接集成出现的问题

重现步骤

报错信息

java.lang.NullPointerException at org.apache.ibatis.session.defaults.DefaultSqlSession.close(DefaultSqlSession.java:263) at org.mybatis.spring.SqlSessionUtils.closeSqlSession(SqlSessionUtils.java:195) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:448) at com.sun.proxy.$Proxy111.selectOne(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:159) at com.baomidou.mybatisplus.core.override.MybatisMapperMethod.execute(MybatisMapperMethod.java:108) at com.baomidou.mybatisplus.core.override.MybatisMapperProxy.invoke(MybatisMapperProxy.java:96) at com.sun.proxy.$Proxy112.selectById(Unknown Source) at com.baomidou.mybatisplus.extension.service.IService.getById(IService.java:197) at com.baomidou.mybatisplus.extension.service.IService$$FastClassBySpringCGLIB$$f8525d18.invoke() at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:684)

Comment From: miemieYaho

给出你的复现demo