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读取Oracle数据库中LONG RAW字段会抛出异常

我使用Spring Boot + MyBatis + druid1.0.23读取表中的Long RAW字段时出现异常,然后我又使用Spring里的SingleConnectionDataSource能正常读取,日志记录的异常信息如下:

org.springframework.jdbc.UncategorizedSQLException: Error attempting to get column 'ZP' from result set. 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 at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:84) at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81) at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81) at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:75) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:447) at com.sun.proxy.$Proxy66.selectList(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:231) at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:128) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:68) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:53) at com.sun.proxy.$Proxy71.selectByExampleWithBLOBs(Unknown Source) at com.bolu.gat.controller.CzrkController.image(CzrkController.java:143) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:832) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:743) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:961) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:895) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:967) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:858) at javax.servlet.http.HttpServlet.service(HttpServlet.java:624) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:843) at javax.servlet.http.HttpServlet.service(HttpServlet.java:731) 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 com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:123) 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.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 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.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:87) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 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.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 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:121) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.springframework.boot.context.web.ErrorPageFilter.doFilter(ErrorPageFilter.java:120) at org.springframework.boot.context.web.ErrorPageFilter.access$000(ErrorPageFilter.java:61) at org.springframework.boot.context.web.ErrorPageFilter$1.doFilterInternal(ErrorPageFilter.java:95) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.springframework.boot.context.web.ErrorPageFilter.doFilter(ErrorPageFilter.java:113) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:436) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Unknown Source) Caused by: java.sql.SQLException: 流已被关闭 at oracle.jdbc.driver.LongRawAccessor.getBytes(LongRawAccessor.java:162) at oracle.jdbc.driver.OracleResultSetImpl.getBytes(OracleResultSetImpl.java:722) at oracle.jdbc.driver.OracleResultSet.getBytes(OracleResultSet.java:398) at com.alibaba.druid.filter.FilterChainImpl.resultSet_getBytes(FilterChainImpl.java:885) at com.alibaba.druid.filter.FilterAdapter.resultSet_getBytes(FilterAdapter.java:1521) at com.alibaba.druid.filter.FilterChainImpl.resultSet_getBytes(FilterChainImpl.java:883) at com.alibaba.druid.filter.stat.StatFilter.resultSet_getBytes(StatFilter.java:953) at com.alibaba.druid.filter.FilterChainImpl.resultSet_getBytes(FilterChainImpl.java:883) at com.alibaba.druid.proxy.jdbc.ResultSetProxyImpl.getBytes(ResultSetProxyImpl.java:341) at com.alibaba.druid.pool.DruidPooledResultSet.getBytes(DruidPooledResultSet.java:339) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.ibatis.logging.jdbc.ResultSetLogger.invoke(ResultSetLogger.java:68) at com.sun.proxy.$Proxy107.getBytes(Unknown Source) at org.apache.ibatis.type.ByteArrayTypeHandler.getNullableResult(ByteArrayTypeHandler.java:37) at org.apache.ibatis.type.ByteArrayTypeHandler.getNullableResult(ByteArrayTypeHandler.java:26) at org.apache.ibatis.type.BaseTypeHandler.getResult(BaseTypeHandler.java:66) at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.getPropertyMappingValue(DefaultResultSetHandler.java:452) at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.applyPropertyMappings(DefaultResultSetHandler.java:425) at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.getRowValue(DefaultResultSetHandler.java:387) at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleRowValuesForSimpleResultMap(DefaultResultSetHandler.java:339) at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleRowValues(DefaultResultSetHandler.java:314) at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleResultSet(DefaultResultSetHandler.java:287) at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleResultSets(DefaultResultSetHandler.java:183) at org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:64) at org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:79) at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:63) at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:325) at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:109) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:83) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.ibatis.plugin.Invocation.proceed(Invocation.java:49) at com.github.pagehelper.SqlUtil._processPage(SqlUtil.java:401) at com.github.pagehelper.SqlUtil.processPage(SqlUtil.java:374) at com.github.pagehelper.PageHelper.intercept(PageHelper.java:255) at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:61) at com.sun.proxy.$Proxy104.query(Unknown Source) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:148) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:141) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:434) ... 70 more

原提问者GitHub用户scofield-hello

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山海行 2023-07-05 21:36:15 257 0
3 条回答
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  • 北京阿里云ACE会长

    在Oracle数据库中,LONG RAW是一种数据类型,用于存储二进制数据。在读取LONG RAW字段时,可能会抛出异常,这是因为LONG RAW字段的数据量较大,而JDBC驱动程序默认情况下不支持读取过大的数据。

    为了解决这个问题,可以使用Oracle提供的getBinaryStream()方法来读取LONG RAW字段。这个方法可以返回一个InputStream对象,通过这个对象可以逐个字节地读取LONG RAW字段的内容。

    2023-07-30 09:39:18
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  • 值得去的地方都没有捷径

    根据您提供的异常信息,看起来问题出在读取Oracle数据库中的Long RAW字段时,流已经关闭了。这可能是因为某种原因导致流在读取之前就被关闭了。

    一种解决此问题的方法是在读取之前确保流是打开的。您可以尝试在查询之前添加以下代码来保持流的打开状态:

    ((OracleResultSet) resultSet).defineColumnType(columnIndex, OracleTypes.BLOB);
    

    这将强制将结果集中的指定列定义为BLOB类型,从而避免流被关闭。

    另外,如果您使用的是Oracle 12c或更高版本,可以考虑将Long RAW字段更改为BLOB类型。Long RAW是一种过时的数据类型,它在最新的Oracle版本中已经不推荐使用。使用BLOB类型可能会更容易处理和读取二进制数据。

    另外,您还可以尝试更新您使用的数据库驱动程序,以确保使用的是最新版本。有时,更新驱动程序可以解决一些已知的问题和错误。

    希望以上信息对您有帮助。如果您还有其他问题,请随时提问。

    2023-07-11 17:13:23
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  • 看起来比较奇怪哦,但因为我没有Oracle环境,不好做测试。你帮忙试试DBCP是否存在同样问题

    原回答者GitHub用户wenshao

    2023-07-06 12:16:40
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