在Spring + mybatis 整合的时候报获取数据库连接错误，但是在项目启动的时候并没有错，只是在执行数据库插入的时候报错。
com.kom.base.canal.exception.ErrorHandleException: com.kom.base.canal.exception.ErrorHandleException: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException:
Error updating database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.alibaba.druid.pool.DataSourceClosedException: dataSource already closed at Sat Oct 28 10:49:14 GMT+08:00 2017
Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.alibaba.druid.pool.DataSourceClosedException: dataSource already closed at Sat Oct 28 10:49:14 GMT+08:00 2017
at com.kom.base.canal.consumer.CanalEventDispatcherLocalImpl.dispatherEvent(CanalEventDispatcherLocalImpl.java:50)
at com.kom.base.canal.consumer.CanalEventConsumerKafkaImpl$CanalEventConsumerListener.onMessage(CanalEventConsumerKafkaImpl.java:70)
at com.kom.base.kafka.consumer.ConsumerOfKafkaImpl$1.run(ConsumerOfKafkaImpl.java:109)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:748)
Caused by: com.kom.base.canal.exception.ErrorHandleException: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException:
Error updating database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.alibaba.druid.pool.DataSourceClosedException: dataSource already closed at Sat Oct 28 10:49:14 GMT+08:00 2017
Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.alibaba.druid.pool.DataSourceClosedException: dataSource already closed at Sat Oct 28 10:49:14 GMT+08:00 2017
at com.kom.base.canal.consumer.handler.BaseCanalEventHandler.handleEvent(BaseCanalEventHandler.java:58)
at com.kom.base.canal.consumer.CanalEventDispatcherLocalImpl.dispatherEvent(CanalEventDispatcherLocalImpl.java:41)
... 7 more
Caused by: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException:
Error updating database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.alibaba.druid.pool.DataSourceClosedException: dataSource already closed at Sat Oct 28 10:49:14 GMT+08:00 2017
Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.alibaba.druid.pool.DataSourceClosedException: dataSource already closed at Sat Oct 28 10:49:14 GMT+08:00 2017
at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:75)
at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:371)
at com.sun.proxy.$Proxy7.insert(Unknown Source)
at org.mybatis.spring.SqlSessionTemplate.insert(SqlSessionTemplate.java:240)
at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:51)
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:52)
at com.sun.proxy.$Proxy8.insert(Unknown Source)
at com.kom.giant.realtime.orderstatistics.dao.RtBuyerAreaAmountRankDao.insert(RtBuyerAreaAmountRankDao.java:15)
at com.kom.giant.realtime.orderstatistics.service.OrderMainChangeHandler.rowUpdateHandle(OrderMainChangeHandler.java:46)
at com.kom.base.canal.consumer.handler.BaseCanalEventHandler.handleEvent(BaseCanalEventHandler.java:44)
... 8 more
Caused by: org.apache.ibatis.exceptions.PersistenceException:
Error updating database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.alibaba.druid.pool.DataSourceClosedException: dataSource already closed at Sat Oct 28 10:49:14 GMT+08:00 2017
Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.alibaba.druid.pool.DataSourceClosedException: dataSource already closed at Sat Oct 28 10:49:14 GMT+08:00 2017
at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:26)
at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:154)
at org.apache.ibatis.session.defaults.DefaultSqlSession.insert(DefaultSqlSession.java:141)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:358)
... 16 more
Caused by: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.alibaba.druid.pool.DataSourceClosedException: dataSource already closed at Sat Oct 28 10:49:14 GMT+08:00 2017
at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:80)
at org.mybatis.spring.transaction.SpringManagedTransaction.openConnection(SpringManagedTransaction.java:81)
at org.mybatis.spring.transaction.SpringManagedTransaction.getConnection(SpringManagedTransaction.java:67)
at org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:279)
at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:72)
at org.apache.ibatis.executor.SimpleExecutor.doUpdate(SimpleExecutor.java:47)
at org.apache.ibatis.executor.BaseExecutor.update(BaseExecutor.java:105)
at org.apache.ibatis.executor.CachingExecutor.update(CachingExecutor.java:71)
at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:152)
... 22 more
Caused by: com.alibaba.druid.pool.DataSourceClosedException: dataSource already closed at Sat Oct 28 10:49:14 GMT+08:00 2017
at com.alibaba.druid.pool.DruidDataSource.getConnectionInternal(DruidDataSource.java:1043)
at com.alibaba.druid.pool.DruidDataSource.getConnectionDirect(DruidDataSource.java:941)
at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:4544)
at com.alibaba.druid.filter.stat.StatFilter.dataSource_getConnection(StatFilter.java:661)
at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:4540)
at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:919)
at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:911)
at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:98)
at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111)
at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77)
