我在特定时间在应用程序的后台运行了很多简单的工作。
我得到以下异常：
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was 86,399,991 milliseconds ago. The last packet sent successfully to the server was 86,399,991 milliseconds ago. is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.
at sun.reflect.GeneratedConstructorAccessor225.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:989)
at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3743)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2506)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2677)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2545)
at com.mysql.jdbc.ConnectionImpl.setAutoCommit(ConnectionImpl.java:4842)
at com.mchange.v2.c3p0.impl.NewProxyConnection.setAutoCommit(NewProxyConnection.java:881)
at org.quartz.impl.jdbcjobstore.AttributeRestoringConnectionInvocationHandler.setAutoCommit(AttributeRestoringConnectionInvocationHandler.java:98)
at org.quartz.impl.jdbcjobstore.AttributeRestoringConnectionInvocationHandler.invoke(AttributeRestoringConnectionInvocationHandler.java:66)
at com.sun.proxy.$Proxy189.setAutoCommit(Unknown Source)
at org.quartz.impl.jdbcjobstore.JobStoreSupport.getConnection(JobStoreSupport.java:799)
at org.quartz.impl.jdbcjobstore.JobStoreTX.getNonManagedTXConnection(JobStoreTX.java:71)
at org.quartz.impl.jdbcjobstore.JobStoreSupport.executeInNonManagedTXLock(JobStoreSupport.java:3796)
at org.quartz.impl.jdbcjobstore.JobStoreSupport.retryExecuteInNonManagedTXLock(JobStoreSupport.java:3754)
at org.quartz.impl.jdbcjobstore.JobStoreSupport.triggeredJobComplete(JobStoreSupport.java:3051)
at org.quartz.core.QuartzScheduler.notifyJobStoreJobComplete(QuartzScheduler.java:1804)
at org.quartz.core.JobRunShell.run(JobRunShell.java:269)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:573)
Caused by: java.net.SocketException: Connection timed out (Write failed)
at java.net.SocketOutputStream.socketWrite0(Native Method)
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:111)
at java.net.SocketOutputStream.write(SocketOutputStream.java:155)
at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3725)
... 16 common frames omitted
2017-12-06 04:55:00.095 WARN 12080 --- [eduler_Worker-3] c.m.v2.c3p0.impl.NewPooledConnection : [c3p0] A PooledConnection that has already signalled a Connection error is still in use!
2017-12-06 04:55:00.095 WARN 12080 --- [eduler_Worker-3] c.m.v2.c3p0.impl.NewPooledConnection : [c3p0] Another error has occurred [ java.sql.SQLException: No operations allowed after statement closed. ] which will not be reported to listeners!
java.sql.SQLException: No operations allowed after statement closed.
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:964)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:897)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:886)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:860)
at com.mysql.jdbc.StatementImpl.checkClosed(StatementImpl.java:436)
at com.mysql.jdbc.PreparedStatement.setString(PreparedStatement.java:3869)
at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.setString(NewProxyPreparedStatement.java:963)
at org.quartz.impl.jdbcjobstore.StdJDBCDelegate.deleteFiredTrigger(StdJDBCDelegate.java:2912)
at org.quartz.impl.jdbcjobstore.JobStoreSupport.triggeredJobComplete(JobStoreSupport.java:3128)
at org.quartz.impl.jdbcjobstore.JobStoreSupport$45.executeVoid(JobStoreSupport.java:3055)
at org.quartz.impl.jdbcjobstore.JobStoreSupport$VoidTransactionCallback.execute(JobStoreSupport.java:3715)
at org.quartz.impl.jdbcjobstore.JobStoreSupport$VoidTransactionCallback.execute(JobStoreSupport.java:3713)
at org.quartz.impl.jdbcjobstore.JobStoreSupport.executeInNonManagedTXLock(JobStoreSupport.java:3799)
at org.quartz.impl.jdbcjobstore.JobStoreSupport.retryExecuteInNonManagedTXLock(JobStoreSupport.java:3754)
at org.quartz.impl.jdbcjobstore.JobStoreSupport.triggeredJobComplete(JobStoreSupport.java:3051)
at org.quartz.core.QuartzScheduler.notifyJobStoreJobComplete(QuartzScheduler.java:1804)
at org.quartz.core.JobRunShell.run(JobRunShell.java:269)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:573)
2017-12-06 04:55:00.095 INFO 12080 --- [eduler_Worker-3] c.m.v2.c3p0.stmt.GooGooStatementCache : Problem with checked-in Statement, discarding.
java.sql.SQLException: No operations allowed after statement closed.
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:964)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:897)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:886)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:860)
at com.mysql.jdbc.StatementImpl.checkClosed(StatementImpl.java:436)
at com.mysql.jdbc.PreparedStatement.clearParameters(PreparedStatement.java:1025)
at com.mchange.v2.c3p0.stmt.GooGooStatementCache.refreshStatement(GooGooStatementCache.java:604)
at com.mchange.v2.c3p0.stmt.GooGooStatementCache.checkinStatement(GooGooStatementCache.java:236)
at com.mchange.v2.c3p0.impl.NewPooledConnection.checkinStatement(NewPooledConnection.java:239)
at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.close(NewProxyPreparedStatement.java:1807)
at org.quartz.impl.jdbcjobstore.StdJDBCDelegate.closeStatement(StdJDBCDelegate.java:3287)
at org.quartz.impl.jdbcjobstore.StdJDBCDelegate.deleteFiredTrigger(StdJDBCDelegate.java:2916)
at org.quartz.impl.jdbcjobstore.JobStoreSupport.triggeredJobComplete(JobStoreSupport.java:3128)
at org.quartz.impl.jdbcjobstore.JobStoreSupport$45.executeVoid(JobStoreSupport.java:3055)
at org.quartz.impl.jdbcjobstore.JobStoreSupport$VoidTransactionCallback.execute(JobStoreSupport.java:3715)
at org.quartz.impl.jdbcjobstore.JobStoreSupport$VoidTransactionCallback.execute(JobStoreSupport.java:3713)
at org.quartz.impl.jdbcjobstore.JobStoreSupport.executeInNonManagedTXLock(JobStoreSupport.java:3799)
at org.quartz.impl.jdbcjobstore.JobStoreSupport.retryExecuteInNonManagedTXLock(JobStoreSupport.java:3754)
at org.quartz.impl.jdbcjobstore.JobStoreSupport.triggeredJobComplete(JobStoreSupport.java:3051)
at org.quartz.core.QuartzScheduler.notifyJobStoreJobComplete(QuartzScheduler.java:1804)
at org.quartz.core.JobRunShell.run(JobRunShell.java:269)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:573)
2017-12-06 04:55:00.095 WARN 12080 --- [eduler_Worker-3] c.m.v2.c3p0.impl.NewPooledConnection : [c3p0] A PooledConnection that has already signalled a Connection error is still in use!
2017-12-06 04:55:00.095 WARN 12080 --- [eduler_Worker-3] c.m.v2.c3p0.impl.NewPooledConnection : [c3p0] Another error has occurred [ com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operations allowed after connection closed. ] which will not be reported to listeners!
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operations allowed after connection closed.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
at com.mysql.jdbc.Util.getInstance(Util.java:408)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:918)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:897)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:886)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:860)
at com.mysql.jdbc.ConnectionImpl.throwConnectionClosedException(ConnectionImpl.java:1246)
at com.mysql.jdbc.ConnectionImpl.checkClosed(ConnectionImpl.java:1241)
at com.mysql.jdbc.ConnectionImpl.rollback(ConnectionImpl.java:4564)
at com.mchange.v2.c3p0.impl.NewProxyConnection.rollback(NewProxyConnection.java:855)
at sun.reflect.GeneratedMethodAccessor646.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.quartz.impl.jdbcjobstore.AttributeRestoringConnectionInvocationHandler.invoke(AttributeRestoringConnectionInvocationHandler.java:73)
at com.sun.proxy.$Proxy189.rollback(Unknown Source)
at org.quartz.impl.jdbcjobstore.JobStoreSupport.rollbackConnection(JobStoreSupport.java:3662)
at org.quartz.impl.jdbcjobstore.JobStoreSupport.executeInNonManagedTXLock(JobStoreSupport.java:3821)
at org.quartz.impl.jdbcjobstore.JobStoreSupport.retryExecuteInNonManagedTXLock(JobStoreSupport.java:3754)
at org.quartz.impl.jdbcjobstore.JobStoreSupport.triggeredJobComplete(JobStoreSupport.java:3051)
at org.quartz.core.QuartzScheduler.notifyJobStoreJobComplete(QuartzScheduler.java:1804)
at org.quartz.core.JobRunShell.run(JobRunShell.java:269)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:573)
我用Google搜索并避免连接， 我添加了mysql同步作业，该作业在系统中运行了7个小时但仍然出现此异常。
我的石英属性如下：
org.quartz:
threadPool:
class: org.quartz.simpl.SimpleThreadPool
threadCount: 10
scheduler:
batchTriggerAcquisitionMaxCount: 10
skipUpdateCheck: true
dbFailureRetryInterval: 1000
idleWaitTime: 5000
instanceId: AUTO
jobStore:
class: org.quartz.impl.jdbcjobstore.JobStoreTX
tablePrefix: qrtz_
driverDelegateClass: org.quartz.impl.jdbcjobstore.StdJDBCDelegate
dataSource: quartzDataSource
isClustered: false
dataSource:
quartzDataSource:
driver: com.mysql.jdbc.Driver
validationQuery: "SELECT 1"
validateOnCheckout: true
idleConnectionValidationSeconds: 900
当我使用spring boot时，我的DB配置bean属性设置为
HikariConfig config = new HikariConfig();
config.setDataSourceClassName(dataSourcePropertyResolver.getProperty("dataSourceClassName"));
if (StringUtils.isEmpty(dataSourcePropertyResolver.getProperty("url"))) {
config.addDataSourceProperty("databaseName", dataSourcePropertyResolver.getProperty("databaseName"));
config.addDataSourceProperty("serverName", dataSourcePropertyResolver.getProperty("serverName"));
} else {
config.addDataSourceProperty("url", dataSourcePropertyResolver.getProperty("url"));
}
config.addDataSourceProperty("user", dataSourcePropertyResolver.getProperty("username"));
config.addDataSourceProperty("password", dataSourcePropertyResolver.getProperty("password"));
config.setMaximumPoolSize(MAX_POOL_SIZE);
config.setConnectionInitSql("SELECT 1");
config.setConnectionTestQuery("SELECT 1");
if ("com.mysql.jdbc.jdbc2.optional.MysqlDataSource"
.equals(dataSourcePropertyResolver.getProperty("dataSourceClassName"))) {
config.addDataSourceProperty("cachePrepStmts",
dataSourcePropertyResolver.getProperty("cachePrepStmts", "true"));
config.addDataSourceProperty("prepStmtCacheSize",
dataSourcePropertyResolver.getProperty("prepStmtCacheSize", "250"));
config.addDataSourceProperty("prepStmtCacheSqlLimit",
dataSourcePropertyResolver.getProperty("prepStmtCacheSqlLimit", "2048"));
}
if (metricRegistry != null) {
config.setMetricRegistry(metricRegistry);
}
return new HikariDataSource(config);
我的配置有什么问题吗？ 我怎样才能摆脱这个错误？ 它不常发生。