我使用 Hibernate 4 并使用 C3P0 作为其连接提供程序。我目前没有使用 Spring框架。
开发环境
Windows 7
Eclipse Juno
JRE-7
JDK -7
我使用的 jar 是...
hibernate-core-4.1.7.Final.jar
c3p0-0.9.2-pre6.jar
jtds-1.3.0.jar
但在同一个lib路径中也有
hibernate-c3p0-4.1.1.Final.jar
spring-orm-3.2.0.RC1.jar
其他 jars(hibernate-c3p0-4.1.1.Final.jar 和 spring-orm-3.2.0.RC1.jar)是否有可能对此错误产生一些影响(见下文)？
是的，整个 spring 框架 jar 都在路径中，但我只是想 先习惯 hibernate 。我还不知道如何使用Spring。我们暂时把这个问题留在这里。
我可以创建连接并成功查询数据库。 但我收到这个错误
类似的东西
关闭 com.mchange.v2.c3p0.impl.NewPooledConnection@4d0106e5 时，某些资源无法正确关闭
和
WARNING: Failed to destroy resource: com.mchange.v2.c3p0.impl.NewPooledConnection@4d0106e5
我收到的错误非常重复。 它们看起来都是这样的
11월 30, 2012 4:39:59 오후 com.mchange.v2.c3p0.impl.NewPooledConnection logCloseExceptions
INFO: [c3p0] Exceptions occurred while trying to close a PooledConnection's resources normally.
11월 30, 2012 4:39:59 오후 com.mchange.v2.c3p0.impl.NewPooledConnection logCloseExceptions
INFO: [c3p0] NewPooledConnection close Exception.
java.sql.SQLException: I/O Error: Stream 2 attempting to read when no request has been sent
at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2388)
at net.sourceforge.jtds.jdbc.TdsCore.clearResponseQueue(TdsCore.java:736)
at net.sourceforge.jtds.jdbc.JtdsStatement.reset(JtdsStatement.java:722)
at net.sourceforge.jtds.jdbc.JtdsStatement.close(JtdsStatement.java:966)
at com.mchange.v2.c3p0.impl.NewPooledConnection.cleanupUncachedStatements(NewPooledConnection.java:718)
at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:592)
at com.mchange.v2.c3p0.impl.NewPooledConnection.closeMaybeCheckedOut(NewPooledConnection.java:247)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.destroyResource(C3P0PooledConnectionPool.java:607)
at com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask.run(BasicResourcePool.java:1012)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:636)
Caused by: java.io.IOException: Stream 2 attempting to read when no request has been sent
at net.sourceforge.jtds.jdbc.SharedSocket.getNetPacket(SharedSocket.java:755)
at net.sourceforge.jtds.jdbc.ResponseStream.getPacket(ResponseStream.java:477)
at net.sourceforge.jtds.jdbc.ResponseStream.read(ResponseStream.java:114)
at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2282)
... 9 more
11월 30, 2012 4:39:59 오후 com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask run
WARNING: Failed to destroy resource: com.mchange.v2.c3p0.impl.NewPooledConnection@4d0106e5
java.sql.SQLException: Some resources failed to close properly while closing com.mchange.v2.c3p0.impl.NewPooledConnection@4d0106e5
at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:638)
at com.mchange.v2.c3p0.impl.NewPooledConnection.closeMaybeCheckedOut(NewPooledConnection.java:247)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.destroyResource(C3P0PooledConnectionPool.java:607)
at com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask.run(BasicResourcePool.java:1012)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:636)
11월 30, 2012 4:42:17 오후 com.mchange.v2.c3p0.impl.NewPooledConnection logCloseExceptions
INFO: [c3p0] Exceptions occurred while trying to close a PooledConnection's resources normally.
11월 30, 2012 4:42:17 오후 com.mchange.v2.c3p0.impl.NewPooledConnection logCloseExceptions
INFO: [c3p0] NewPooledConnection close Exception.
java.sql.SQLException: I/O Error: Stream 2 attempting to read when no request has been sent
at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2388)
at net.sourceforge.jtds.jdbc.TdsCore.clearResponseQueue(TdsCore.java:736)
at net.sourceforge.jtds.jdbc.JtdsStatement.reset(JtdsStatement.java:722)
at net.sourceforge.jtds.jdbc.JtdsStatement.close(JtdsStatement.java:966)
at com.mchange.v2.c3p0.impl.NewPooledConnection.cleanupUncachedStatements(NewPooledConnection.java:718)
at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:592)
at com.mchange.v2.c3p0.impl.NewPooledConnection.closeMaybeCheckedOut(NewPooledConnection.java:247)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.destroyResource(C3P0PooledConnectionPool.java:607)
at com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask.run(BasicResourcePool.java:1012)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:636)
Caused by: java.io.IOException: Stream 2 attempting to read when no request has been sent
at net.sourceforge.jtds.jdbc.SharedSocket.getNetPacket(SharedSocket.java:755)
at net.sourceforge.jtds.jdbc.ResponseStream.getPacket(ResponseStream.java:477)
at net.sourceforge.jtds.jdbc.ResponseStream.read(ResponseStream.java:114)
at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2282)
... 9 more
11월 30, 2012 4:42:17 오후 com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask run
WARNING: Failed to destroy resource: com.mchange.v2.c3p0.impl.NewPooledConnection@40a4d015
java.sql.SQLException: Some resources failed to close properly while closing com.mchange.v2.c3p0.impl.NewPooledConnection@40a4d015
at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:638)
at com.mchange.v2.c3p0.impl.NewPooledConnection.closeMaybeCheckedOut(NewPooledConnection.java:247)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.destroyResource(C3P0PooledConnectionPool.java:607)
at com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask.run(BasicResourcePool.java:1012)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:636)
11월 30, 2012 4:42:17 오후 com.mchange.v2.c3p0.impl.NewPooledConnection logCloseExceptions
INFO: [c3p0] Exceptions occurred while trying to close a PooledConnection's resources normally.
11월 30, 2012 4:42:17 오후 com.mchange.v2.c3p0.impl.NewPooledConnection logCloseExceptions
INFO: [c3p0] NewPooledConnection close Exception.
java.sql.SQLException: I/O Error: Stream 2 attempting to read when no request has been sent
at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2388)
at net.sourceforge.jtds.jdbc.TdsCore.clearResponseQueue(TdsCore.java:736)
at net.sourceforge.jtds.jdbc.JtdsStatement.reset(JtdsStatement.java:722)
at net.sourceforge.jtds.jdbc.JtdsStatement.close(JtdsStatement.java:966)
at com.mchange.v2.c3p0.impl.NewPooledConnection.cleanupUncachedStatements(NewPooledConnection.java:718)
at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:592)
at com.mchange.v2.c3p0.impl.NewPooledConnection.closeMaybeCheckedOut(NewPooledConnection.java:247)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.destroyResource(C3P0PooledConnectionPool.java:607)
at com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask.run(BasicResourcePool.java:1012)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:636)
Caused by: java.io.IOException: Stream 2 attempting to read when no request has been sent
at net.sourceforge.jtds.jdbc.SharedSocket.getNetPacket(SharedSocket.java:755)
at net.sourceforge.jtds.jdbc.ResponseStream.getPacket(ResponseStream.java:477)
at net.sourceforge.jtds.jdbc.ResponseStream.read(ResponseStream.java:114)
at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2282)
... 9 more
11월 30, 2012 4:42:17 오후 com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask run
WARNING: Failed to destroy resource: com.mchange.v2.c3p0.impl.NewPooledConnection@2ee657fa
java.sql.SQLException: Some resources failed to close properly while closing com.mchange.v2.c3p0.impl.NewPooledConnection@2ee657fa
at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:638)
at com.mchange.v2.c3p0.impl.NewPooledConnection.closeMaybeCheckedOut(NewPooledConnection.java:247)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.destroyResource(C3P0PooledConnectionPool.java:607)
at com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask.run(BasicResourcePool.java:1012)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:636)
11월 30, 2012 4:42:18 오후 com.mchange.v2.c3p0.impl.NewPooledConnection logCloseExceptions
INFO: [c3p0] Exceptions occurred while trying to close a PooledConnection's resources normally.
11월 30, 2012 4:42:18 오후 com.mchange.v2.c3p0.impl.NewPooledConnection logCloseExceptions
INFO: [c3p0] NewPooledConnection close Exception.
java.sql.SQLException: I/O Error: Stream 2 attempting to read when no request has been sent
at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2388)
at net.sourceforge.jtds.jdbc.TdsCore.clearResponseQueue(TdsCore.java:736)
at net.sourceforge.jtds.jdbc.JtdsStatement.reset(JtdsStatement.java:722)
at net.sourceforge.jtds.jdbc.JtdsStatement.close(JtdsStatement.java:966)
at com.mchange.v2.c3p0.impl.NewPooledConnection.cleanupUncachedStatements(NewPooledConnection.java:718)
at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:592)
at com.mchange.v2.c3p0.impl.NewPooledConnection.closeMaybeCheckedOut(NewPooledConnection.java:247)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.destroyResource(C3P0PooledConnectionPool.java:607)
at com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask.run(BasicResourcePool.java:1012)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:636)
Caused by: java.io.IOException: Stream 2 attempting to read when no request has been sent
at net.sourceforge.jtds.jdbc.SharedSocket.getNetPacket(SharedSocket.java:755)
at net.sourceforge.jtds.jdbc.ResponseStream.getPacket(ResponseStream.java:477)
at net.sourceforge.jtds.jdbc.ResponseStream.read(ResponseStream.java:114)
at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2282)
... 9 more
11월 30, 2012 4:42:18 오후 com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask run
WARNING: Failed to destroy resource: com.mchange.v2.c3p0.impl.NewPooledConnection@51b2f91b
java.sql.SQLException: Some resources failed to close properly while closing com.mchange.v2.c3p0.impl.NewPooledConnection@51b2f91b
at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:638)
at com.mchange.v2.c3p0.impl.NewPooledConnection.closeMaybeCheckedOut(NewPooledConnection.java:247)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.destroyResource(C3P0PooledConnectionPool.java:607)
at com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask.run(BasicResourcePool.java:1012)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:636)
11월 30, 2012 4:42:19 오후 com.mchange.v2.c3p0.impl.NewPooledConnection logCloseExceptions
INFO: [c3p0] Exceptions occurred while trying to close a PooledConnection's resources normally.
11월 30, 2012 4:42:19 오후 com.mchange.v2.c3p0.impl.NewPooledConnection logCloseExceptions
INFO: [c3p0] NewPooledConnection close Exception.
java.sql.SQLException: I/O Error: Stream 2 attempting to read when no request has been sent
at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2388)
at net.sourceforge.jtds.jdbc.TdsCore.clearResponseQueue(TdsCore.java:736)
at net.sourceforge.jtds.jdbc.JtdsStatement.reset(JtdsStatement.java:722)
at net.sourceforge.jtds.jdbc.JtdsStatement.close(JtdsStatement.java:966)
at com.mchange.v2.c3p0.impl.NewPooledConnection.cleanupUncachedStatements(NewPooledConnection.java:718)
at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:592)
at com.mchange.v2.c3p0.impl.NewPooledConnection.closeMaybeCheckedOut(NewPooledConnection.java:247)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.destroyResource(C3P0PooledConnectionPool.java:607)
at com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask.run(BasicResourcePool.java:1012)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:636)
Caused by: java.io.IOException: Stream 2 attempting to read when no request has been sent
at net.sourceforge.jtds.jdbc.SharedSocket.getNetPacket(SharedSocket.java:755)
at net.sourceforge.jtds.jdbc.ResponseStream.getPacket(ResponseStream.java:477)
at net.sourceforge.jtds.jdbc.ResponseStream.read(ResponseStream.java:114)
at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2282)
... 9 more
11월 30, 2012 4:42:19 오후 com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask run
WARNING: Failed to destroy resource: com.mchange.v2.c3p0.impl.NewPooledConnection@7bb39e5e
java.sql.SQLException: Some resources failed to close properly while closing com.mchange.v2.c3p0.impl.NewPooledConnection@7bb39e5e
at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:638)
at com.mchange.v2.c3p0.impl.NewPooledConnection.closeMaybeCheckedOut(NewPooledConnection.java:247)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.destroyResource(C3P0PooledConnectionPool.java:607)
at com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask.run(BasicResourcePool.java:1012)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:636)
11월 30, 2012 4:42:21 오후 com.mchange.v2.c3p0.impl.NewPooledConnection logCloseExceptions
INFO: [c3p0] Exceptions occurred while trying to close a PooledConnection's resources normally.
11월 30, 2012 4:42:21 오후 com.mchange.v2.c3p0.impl.NewPooledConnection logCloseExceptions
INFO: [c3p0] NewPooledConnection close Exception.
java.sql.SQLException: I/O Error: Stream 2 attempting to read when no request has been sent
at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2388)
at net.sourceforge.jtds.jdbc.TdsCore.clearResponseQueue(TdsCore.java:736)
at net.sourceforge.jtds.jdbc.JtdsStatement.reset(JtdsStatement.java:722)
at net.sourceforge.jtds.jdbc.JtdsStatement.close(JtdsStatement.java:966)
at com.mchange.v2.c3p0.impl.NewPooledConnection.cleanupUncachedStatements(NewPooledConnection.java:718)
at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:592)
at com.mchange.v2.c3p0.impl.NewPooledConnection.closeMaybeCheckedOut(NewPooledConnection.java:247)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.destroyResource(C3P0PooledConnectionPool.java:607)
at com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask.run(BasicResourcePool.java:1012)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:636)
Caused by: java.io.IOException: Stream 2 attempting to read when no request has been sent
at net.sourceforge.jtds.jdbc.SharedSocket.getNetPacket(SharedSocket.java:755)
at net.sourceforge.jtds.jdbc.ResponseStream.getPacket(ResponseStream.java:477)
at net.sourceforge.jtds.jdbc.ResponseStream.read(ResponseStream.java:114)
at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2282)
... 9 more
11월 30, 2012 4:42:21 오후 com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask run
WARNING: Failed to destroy resource: com.mchange.v2.c3p0.impl.NewPooledConnection@155767ad
java.sql.SQLException: Some resources failed to close properly while closing com.mchange.v2.c3p0.impl.NewPooledConnection@155767ad
at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:638)
at com.mchange.v2.c3p0.impl.NewPooledConnection.closeMaybeCheckedOut(NewPooledConnection.java:247)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.destroyResource(C3P0PooledConnectionPool.java:607)
at com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask.run(BasicResourcePool.java:1012)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:636)
11월 30, 2012 4:42:22 오후 com.mchange.v2.c3p0.impl.NewPooledConnection logCloseExceptions
INFO: [c3p0] Exceptions occurred while trying to close a PooledConnection's resources normally.
11월 30, 2012 4:42:22 오후 com.mchange.v2.c3p0.impl.NewPooledConnection logCloseExceptions
INFO: [c3p0] NewPooledConnection close Exception.
java.sql.SQLException: I/O Error: Stream 2 attempting to read when no request has been sent
at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2388)
at net.sourceforge.jtds.jdbc.TdsCore.clearResponseQueue(TdsCore.java:736)
at net.sourceforge.jtds.jdbc.JtdsStatement.reset(JtdsStatement.java:722)
at net.sourceforge.jtds.jdbc.JtdsStatement.close(JtdsStatement.java:966)
at com.mchange.v2.c3p0.impl.NewPooledConnection.cleanupUncachedStatements(NewPooledConnection.java:718)
at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:592)
at com.mchange.v2.c3p0.impl.NewPooledConnection.closeMaybeCheckedOut(NewPooledConnection.java:247)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.destroyResource(C3P0PooledConnectionPool.java:607)
at com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask.run(BasicResourcePool.java:1012)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:636)
Caused by: java.io.IOException: Stream 2 attempting to read when no request has been sent
at net.sourceforge.jtds.jdbc.SharedSocket.getNetPacket(SharedSocket.java:755)
at net.sourceforge.jtds.jdbc.ResponseStream.getPacket(ResponseStream.java:477)
at net.sourceforge.jtds.jdbc.ResponseStream.read(ResponseStream.java:114)
at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2282)
... 9 more
11월 30, 2012 4:42:22 오후 com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask run
WARNING: Failed to destroy resource: com.mchange.v2.c3p0.impl.NewPooledConnection@299bdc58
java.sql.SQLException: Some resources failed to close properly while closing com.mchange.v2.c3p0.impl.NewPooledConnection@299bdc58
at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:638)
at com.mchange.v2.c3p0.impl.NewPooledConnection.closeMaybeCheckedOut(NewPooledConnection.java:247)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.destroyResource(C3P0PooledConnectionPool.java:607)
at com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask.run(BasicResourcePool.java:1012)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:636)
11월 30, 2012 4:42:22 오후 com.mchange.v2.c3p0.impl.NewPooledConnection logCloseExceptions
INFO: [c3p0] Exceptions occurred while trying to close a PooledConnection's resources normally.
11월 30, 2012 4:42:22 오후 com.mchange.v2.c3p0.impl.NewPooledConnection logCloseExceptions
INFO: [c3p0] NewPooledConnection close Exception.
java.sql.SQLException: I/O Error: Stream 2 attempting to read when no request has been sent
at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2388)
at net.sourceforge.jtds.jdbc.TdsCore.clearResponseQueue(TdsCore.java:736)
at net.sourceforge.jtds.jdbc.JtdsStatement.reset(JtdsStatement.java:722)
at net.sourceforge.jtds.jdbc.JtdsStatement.close(JtdsStatement.java:966)
at com.mchange.v2.c3p0.impl.NewPooledConnection.cleanupUncachedStatements(NewPooledConnection.java:718)
at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:592)
at com.mchange.v2.c3p0.impl.NewPooledConnection.closeMaybeCheckedOut(NewPooledConnection.java:247)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.destroyResource(C3P0PooledConnectionPool.java:607)
at com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask.run(BasicResourcePool.java:1012)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:636)
Caused by: java.io.IOException: Stream 2 attempting to read when no request has been sent
at net.sourceforge.jtds.jdbc.SharedSocket.getNetPacket(SharedSocket.java:755)
at net.sourceforge.jtds.jdbc.ResponseStream.getPacket(ResponseStream.java:477)
at net.sourceforge.jtds.jdbc.ResponseStream.read(ResponseStream.java:114)
at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2282)
... 9 more
11월 30, 2012 4:42:22 오후 com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask run
WARNING: Failed to destroy resource: com.mchange.v2.c3p0.impl.NewPooledConnection@550a9854
java.sql.SQLException: Some resources failed to close properly while closing com.mchange.v2.c3p0.impl.NewPooledConnection@550a9854
at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:638)
at com.mchange.v2.c3p0.impl.NewPooledConnection.closeMaybeCheckedOut(NewPooledConnection.java:247)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.destroyResource(C3P0PooledConnectionPool.java:607)
at com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask.run(BasicResourcePool.java:1012)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:636)
11월 30, 2012 4:42:22 오후 com.mchange.v2.c3p0.impl.NewPooledConnection logCloseExceptions
INFO: [c3p0] Exceptions occurred while trying to close a PooledConnection's resources normally.
11월 30, 2012 4:42:22 오후 com.mchange.v2.c3p0.impl.NewPooledConnection logCloseExceptions
INFO: [c3p0] NewPooledConnection close Exception.
java.sql.SQLException: I/O Error: Stream 2 attempting to read when no request has been sent
at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2388)
at net.sourceforge.jtds.jdbc.TdsCore.clearResponseQueue(TdsCore.java:736)
at net.sourceforge.jtds.jdbc.JtdsStatement.reset(JtdsStatement.java:722)
at net.sourceforge.jtds.jdbc.JtdsStatement.close(JtdsStatement.java:966)
at com.mchange.v2.c3p0.impl.NewPooledConnection.cleanupUncachedStatements(NewPooledConnection.java:718)
at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:592)
at com.mchange.v2.c3p0.impl.NewPooledConnection.closeMaybeCheckedOut(NewPooledConnection.java:247)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.destroyResource(C3P0PooledConnectionPool.java:607)
at com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask.run(BasicResourcePool.java:1012)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:636)
Caused by: java.io.IOException: Stream 2 attempting to read when no request has been sent
at net.sourceforge.jtds.jdbc.SharedSocket.getNetPacket(SharedSocket.java:755)
at net.sourceforge.jtds.jdbc.ResponseStream.getPacket(ResponseStream.java:477)
at net.sourceforge.jtds.jdbc.ResponseStream.read(ResponseStream.java:114)
at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2282)
... 9 more
11월 30, 2012 4:42:22 오후 com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask run
WARNING: Failed to destroy resource: com.mchange.v2.c3p0.impl.NewPooledConnection@67a80f8e
java.sql.SQLException: Some resources failed to close properly while closing com.mchange.v2.c3p0.impl.NewPooledConnection@67a80f8e
at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:638)
at com.mchange.v2.c3p0.impl.NewPooledConnection.closeMaybeCheckedOut(NewPooledConnection.java:247)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.destroyResource(C3P0PooledConnectionPool.java:607)
at com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask.run(BasicResourcePool.java:1012)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:636)
提前致谢。 如果我可以改进写问题的几点，请告诉我:)
编辑 哎呀我忘了粘贴我的配置。来了
<hibernate-configuration>
<session-factory>
<!-- Database connection settings -->
<property name="connection.driver_class">net.sourceforge.jtds.jdbc.Driver</property>
<!-- -->
<!-- JDBC connection pool (use the built-in) -->
<property name="connection.pool_size">5</property>
<!-- connection pooling -->
<property name="connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property>
<!--
<property name="connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property>
-->
<property name="hibernate.c3p0.acquire_increment" >1</property>
<property name="hibernate.c3p0.idle_test_period">30</property>
<property name="hibernate.c3p0.min_size">1</property>
<property name="hibernate.c3p0.max_size">2</property>
<property name="hibernate.c3p0.max_statements">50</property>
<property name="hibernate.c3p0.timeout">60</property>
<!--
<property name="hibernate.c3p0.acquireRetryAttempts">1</property>
<property name="hibernate.c3p0.acquireRetryDelay">250</property>
-->
<!-- SQL dialect -->
<!--
<property name="dialect">org.hibernate.dialect.SQLServerDialect</property>
-->
<!-- Enable Hibernate's automatic session context management -->
<property name="current_session_context_class">thread</property>
<!-- Disable the second-level cache -->
<property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>
<!-- Echo all executed SQL to stdout -->
<property name="show_sql">true</property>
<!-- Drop and re-create the database schema on startup -->
<!-- <property name="hbm2ddl.auto">update</property> -->
<!-- Mapping files -->
<mapping resource="standard.hbm.xml"/>
<mapping resource="revisionedFile.hbm.xml"/>
<mapping resource="keyword.hbm.xml"/>
<mapping resource="device.hbm.xml"/>
<mapping resource="reference.hbm.xml"/>
<mapping resource="commonSpecification.hbm.xml"/>
<mapping resource="item.hbm.xml"/>
<mapping resource="superItem.hbm.xml"/>
<mapping resource="defaultURLResource.hbm.xml" />
<mapping resource="test.hbm.xml"/>
<!-- Enver Listeners -->
<listener class="org.hibernate.envers.event.AuditEventListener" type="post-insert"/>
<listener class="org.hibernate.envers.event.AuditEventListener" type="post-update"/>
<listener class="org.hibernate.envers.event.AuditEventListener" type="post-delete"/>
<listener class="org.hibernate.envers.event.AuditEventListener" type="pre-collection-update"/>
<listener class="org.hibernate.envers.event.AuditEventListener" type="pre-collection-remove"/>
<listener class="org.hibernate.envers.event.AuditEventListener" type="post-collection-recreate"/>
</session-factory>
</hibernate-configuration>
最佳答案
我不知道为什么你会看到这些异常，但它们是 c3p0 正在清理本应由用户关闭但实际上没有关闭的语句的异常。解决该问题的一种方法(可以解决问题或为您提供有关问题发生位置的更清晰的信息)是确保您的客户端应用程序在使用语句后立即关闭语句。当您 checkin 连接时(或者在本例中，当从池中删除 PooledConnection 时)，c3p0 会小心地为您清理未关闭的语句，但是如果发生异常，它们将在资源期间报告为异常。清理，即在 close() 期间。这就是你所看到的。
在 PooledConnection 被销毁时，如何/为什么有未缓存的语句需要关闭，这有点神秘。池不应该在 checkout 时尝试 close() PooledConnection，如果它已 checkin ，则语句应该在 checkin 时被清理。我将向记录器 com.mchange.v2.c3p0.impl.NewPooledConnection 添加更多日志记录(在 FINER/DEBUG 级别)到 c3p0 的下一个预版本，这可能有助于跟踪此问题。如果有机会请务必看一下。
关于Hibernate 4 + C3P0 连接池返回错误，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/13641065/