今天把notice表中的content字段改为long字段后，含有该字段的使用CTE的查询语句报错了。提示一下错误
### Cause: java.sql.SQLException: 流已被关闭 ; uncategorized SQLException for SQL []; SQL state [99999]; error code [17027]; 流已被关闭; nested exception is java.sql.SQLException: 流已被关闭] with root cause java.sql.SQLException: 流已被关闭 at oracle.jdbc.driver.LongAccessor.getBytesInternal(LongAccessor.java:156) at oracle.jdbc.driver.LongAccessor.getBytes(LongAccessor.java:126) at oracle.jdbc.driver.LongAccessor.getString(LongAccessor.java:201) at oracle.jdbc.driver.T4CLongAccessor.getString(T4CLongAccessor.java:427) at oracle.jdbc.driver.OracleResultSetImpl.getString(OracleResultSetImpl.java:1251) at oracle.jdbc.driver.OracleResultSet.getString(OracleResultSet.java:494) at sun.reflect.GeneratedMethodAccessor30.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.ibatis.logging.jdbc.ResultSetLogger.invoke(ResultSetLogger.java:67) at com.sun.proxy.$Proxy75.getString(Unknown Source) at org.apache.ibatis.type.StringTypeHandler.getNullableResult(StringTypeHandler.java:37) at org.apache.ibatis.type.StringTypeHandler.getNullableResult(StringTypeHandler.java:26) at org.apache.ibatis.type.BaseTypeHandler.getResult(BaseTypeHandler.java:55) at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.getPropertyMappingValue(DefaultResultSetHandler.java:390) at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.applyPropertyMappings(DefaultResultSetHandler.java:364) at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.getRowValue(DefaultResultSetHandler.java:338) at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleRowValuesForSimpleResultMap(DefaultResultSetHandler.java:291) at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleRowValues(DefaultResultSetHandler.java:266) at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleResultSet(DefaultResultSetHandler.java:236) at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleResultSets(DefaultResultSetHandler.java:150) at org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:60) at org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:73) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.ibatis.plugin.Invocation.proceed(Invocation.java:49) at com.moral.frame.dao.PaginationInterceptor.query(PaginationInterceptor.java:137) at com.moral.frame.dao.PaginationInterceptor.intercept(PaginationInterceptor.java:78) at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:60) at com.sun.proxy.$Proxy140.query(Unknown Source) at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:60) at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:267) at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:137) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:96) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:77) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:108) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:358) at com.sun.proxy.$Proxy83.selectList(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:205) at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:117) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:63) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:52) at com.sun.proxy.$Proxy122.getReceiveNoticeList(Unknown Source) at com.moral.notice.service.impl.NoticeServiceImpl.getReceiveNoticeList(NoticeServiceImpl.java:161) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:196) at com.sun.proxy.$Proxy126.getReceiveNoticeList(Unknown Source) at com.moral.notice.view.NoticeController.getNoticeListPage(NoticeController.java:69) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:436) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:424) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549) at javax.servlet.http.HttpServlet.service(HttpServlet.java:620) at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.logging.log4j.core.web.Log4jServletFilter.doFilter(Log4jServletFilter.java:66) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:313) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745)
但是我没有使用CTE查询的语句可以正常执行，不会报错，下面是cte的查询语句和普通的查询语句
With NoticeCTE As(
Select
*
from (
Select
noticeKey,
title,
content
From Notice
Order by noticeKey desc
)
), NoticeReadCTE As(
Select
distinct nc.noticeKey, 1 readState
From NoticeCTE nc, notice_Reader nr
Where nc.noticeKey = nr.noticeKey
And nr.readerCode = #{readerCode}
)
Select
nc.*, readState
From NoticeCTE nc
left join NoticeReadCTE rc on nc.noticeKey = rc.noticeKey
order by nc.noticeKey desc
以下是普通的查询语句
Select
noticeKey,
title,
content
From Notice
Where noticeKey = #{noticeKey}
将long类型改成clob，以后上述的sql语句就可以正常执行了。之所以会出现上述原因是因为：
1、cte会自动创建临时表
2、而含有long类型字段不能通过create table b as select * from a方式创建表
3、同时long数据类型已经过时，不建议使用，建议使用clob数据类型
另外还发现在使用map传递参数给mybaits中的CTE查询语句时必须明确指定参数的数据类型，否则会报以下错误
; uncategorized SQLException for SQL []; SQL state [99999]; error code [17004]; 无效的列类型: 1111; nested exception is java.sql.SQLException: 无效的列类型: 1111] with root cause java.sql.SQLException: 无效的列类型: 1111 at oracle.jdbc.driver.OracleStatement.getInternalType(OracleStatement.java:3900) at oracle.jdbc.driver.OraclePreparedStatement.setNullCritical(OraclePreparedStatement.java:4406) at oracle.jdbc.driver.OraclePreparedStatement.setNull(OraclePreparedStatement.java:4388) at oracle.jdbc.driver.OraclePreparedStatementWrapper.setNull(OraclePreparedStatementWrapper.java:1281) at org.apache.ibatis.type.BaseTypeHandler.setParameter(BaseTypeHandler.java:43) at org.apache.ibatis.scripting.defaults.DefaultParameterHandler.setParameters(DefaultParameterHandler.java:81) at com.moral.frame.dao.PaginationInterceptor.setParameters(PaginationInterceptor.java:210) at com.moral.frame.dao.PaginationInterceptor.count(PaginationInterceptor.java:166) at com.moral.frame.dao.PaginationInterceptor.query(PaginationInterceptor.java:135) at com.moral.frame.dao.PaginationInterceptor.intercept(PaginationInterceptor.java:78) at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:60) at com.sun.proxy.$Proxy72.query(Unknown Source) at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:60) at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:267) at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:137) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:96) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:77) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:108) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:358) at com.sun.proxy.$Proxy14.selectList(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:205) at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:117) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:63) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:52) at com.sun.proxy.$Proxy54.getReceiveNoticeList(Unknown Source) at com.moral.notice.service.impl.NoticeServiceImpl.getReceiveNoticeList(NoticeServiceImpl.java:162) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:196) at com.sun.proxy.$Proxy58.getReceiveNoticeList(Unknown Source) at com.moral.notice.view.NoticeController.getNoticeListPage(NoticeController.java:80) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:436) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:424) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549) at javax.servlet.http.HttpServlet.service(HttpServlet.java:620) at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.logging.log4j.core.web.Log4jServletFilter.doFilter(Log4jServletFilter.java:66) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:313) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745)
正确的mybaitis的sql语句配置为
With NoticeCTE As(
Select
*
from (
Select
noticeKey,
title,
content
From Notice
<where>
<trim suffixOverrides="and">
<if test="arrDivisionKey != null ">
and divisionKey in (
<foreach collection="arrDivisionKey" item="divisionKey" index="index" separator=" , " >
#{divisionKey, jdbcType=VARCHAR}
</foreach>
)
</if>
<if test="readerCode != null and readerCode != ''">
And createCode != #{readerCode, jdbcType=VARCHAR}
</if>
</trim>
</where>
Order by noticeKey desc
)
<where>
<trim suffixOverrides="and">
<if test="noticeCount != null and noticeCount > 0">
and rowNum <= #{noticeCount, jdbcType=NUMBERIC}
</if>
</trim>
</where>
), NoticeReadCTE As(
Select
distinct nc.noticeKey, 1 readState
From NoticeCTE nc, mor_notice_Reader nr
Where nc.noticeKey = nr.noticeKey
And nr.readerCode = #{readerCode, jdbcType=VARCHAR}
)
Select
nc.*, readState
From NoticeCTE nc
left join NoticeReadCTE rc on nc.noticeKey = rc.noticeKey
order by nc.noticeKey desc
出现错误的原因是传入的参数为Map<String, Object>类型，mybatis无法确定参数的实际类型，因此需要手工指定。