我tomcat服务器启动后就报这个错误，看起来好像是线程问题，那位知道帮个忙。

15:45:03,252  WARN ThreadPoolAsynchronousRunner:608 - com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@78af54 -- APPARENT DEADLOCK!!! Creating emergency threads for unassigned pending tasks!
15:45:03,255  WARN ThreadPoolAsynchronousRunner:624 - com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@78af54 -- APPARENT DEADLOCK!!! Complete Status: 
Managed Threads: 3
Active Threads: 3
Active Tasks: 
com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@1b32d8c (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0)
com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@737577 (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1)
com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@24dbf6 (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#2)
Pending Tasks: 
com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@1e51ea2
com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@13e3e73
com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@1761ed1
com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@1e15625
com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@ded085
com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@4be5da
Pool thread stack traces:
Thread[com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0,5,main]
java.net.SocketInputStream.socketRead0(Native Method)
java.net.SocketInputStream.read(SocketInputStream.java:129)
com.mysql.jdbc.util.ReadAheadInputStream.fill(ReadAheadInputStream.java:114)
com.mysql.jdbc.util.ReadAheadInputStream.readFromUnderlyingStreamIfNecessary(ReadAheadInputStream.java:161)
com.mysql.jdbc.util.ReadAheadInputStream.read(ReadAheadInputStream.java:189)
com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:2499)
com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2952)
com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2941)
com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3489)
com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:919)
com.mysql.jdbc.MysqlIO.secureAuth411(MysqlIO.java:4004)
com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1284)
com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2312)
com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2122)
com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:774)
com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:49)
sun.reflect.GeneratedConstructorAccessor57.newInstance(Unknown Source)
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
java.lang.reflect.Constructor.newInstance(Constructor.java:513)
com.mysql.jdbc.Util.handleNewInstance(Util.java:409)
com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:375)
com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:289)
com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:135)
com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)
com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171)
com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:137)
com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1014)
com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32)
com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1810)
com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)
Thread[com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#2,5,main]
java.net.SocketInputStream.socketRead0(Native Method)
java.net.SocketInputStream.read(SocketInputStream.java:129)
com.mysql.jdbc.util.ReadAheadInputStream.fill(ReadAheadInputStream.java:114)
com.mysql.jdbc.util.ReadAheadInputStream.readFromUnderlyingStreamIfNecessary(ReadAheadInputStream.java:161)
com.mysql.jdbc.util.ReadAheadInputStream.read(ReadAheadInputStream.java:189)
com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:2499)
com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2952)
com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2941)
com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3489)
com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:919)
com.mysql.jdbc.MysqlIO.secureAuth411(MysqlIO.java:4004)
com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1284)
com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2312)
com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2122)
com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:774)
com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:49)
sun.reflect.GeneratedConstructorAccessor57.newInstance(Unknown Source)
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
java.lang.reflect.Constructor.newInstance(Constructor.java:513)
com.mysql.jdbc.Util.handleNewInstance(Util.java:409)
com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:375)
com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:289)
com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:135)
com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)
com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171)
com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:137)
com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1014)
com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32)
com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1810)
com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)
Thread[com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1,5,main]
java.net.SocketInputStream.socketRead0(Native Method)
java.net.SocketInputStream.read(SocketInputStream.java:129)
com.mysql.jdbc.util.ReadAheadInputStream.fill(ReadAheadInputStream.java:114)
com.mysql.jdbc.util.ReadAheadInputStream.readFromUnderlyingStreamIfNecessary(ReadAheadInputStream.java:161)
com.mysql.jdbc.util.ReadAheadInputStream.read(ReadAheadInputStream.java:189)
com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:2499)
com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2952)
com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2941)
com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3489)
com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:919)
com.mysql.jdbc.MysqlIO.secureAuth411(MysqlIO.java:4004)
com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1284)
com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2312)
com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2122)
com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:774)
com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:49)
sun.reflect.GeneratedConstructorAccessor57.newInstance(Unknown Source)
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
java.lang.reflect.Constructor.newInstance(Constructor.java:513)
com.mysql.jdbc.Util.handleNewInstance(Util.java:409)
com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:375)
com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:289)
com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:135)
com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)
com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171)
com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:137)
com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1014)
com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32)
com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1810)
com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)