我是JAVA中的多线程新手，我遇到了问题。我得到一个例外，说
java.lang.InterruptedException：sleep interrupted
这是因为与db的连接丢失了。我对那里出了什么问题毫无头绪。它似乎在线程被中断后，它们被重新初始化但是没有开始......
以下是我的运行方法
public void run() {
LOG.info("Started");
running = true;
while (running) {
Lock readLock = readWriteLock.readLock();
readLock.lock();
long loopDelay;
try {
loopDelay = executor.execute();
if (loopDelay > 0) {
Thread.sleep(loopDelay);
}
} catch (Exception e) {
LOG.info("Executor Interrupted", e);
break;
} finally {
readLock.unlock();
}
}
LOG.info("Stopped");
}
可能的解决方案：在浏览david建议的链接之后，我觉得这里的问题与David提到的相同，即“线程在休眠时无法处理中断。”所以为了解决这个问题，我应该以更好的方式处理Interrrupted Exception，即david的暗示。
以下是我的堆栈跟踪..有人可以帮助我理解问题
2012-02-03 10:38:09,260 150696427 [taskDiscoveryCallExecutorThread] INFO (TaskExecutorThread.java:89) - Executor Interrupted
java.lang.InterruptedException: sleep interrupted
at java.lang.Thread.sleep(Native Method)
at com.xyz.abc.backgroundtask.impl.TaskExecutorThread.run(TaskExecutorThread.java:86)
2012-02-03 10:38:09,261 150696428 [taskDiscoveryCallExecutorThread] INFO (TaskExecutorThread.java:95) - Stopped
2012-02-03 10:38:09,261 150696428 [main] INFO (TaskExecutorThread.java:69) - shutdown
2012-02-03 10:38:09,262 150696429 [taskRuleExecutorThread] ERROR (JDBCExceptionReporter.java:101) - Cannot get a connection, general error
2012-02-03 10:38:09,262 150696429 [taskRuleExecutorThread] ERROR (JDBCExceptionReporter.java:101) - Cannot get a connection, general error
2012-02-03 10:38:09,294 150696461 [taskRuleExecutorThread] DEBUG (EventScope.java:107) - Destroy scope for customer c02c5ac7-8dee-42aa-b344-ff7f7f6894f5
2012-02-03 10:38:09,294 150696461 [taskRuleExecutorThread] ERROR (TaskExecutor.java:205) - Catch exception
org.springframework.jdbc.UncategorizedSQLException: Hibernate operation: Cannot open connection; uncategorized SQLException for SQL [???]; SQL state [null]; error code [0]; Cannot get a connection, general error; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot get a connection, general error
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:83)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80)
at org.springframework.orm.hibernate3.HibernateAccessor.convertJdbcAccessException(HibernateAccessor.java:424)
at org.springframework.orm.hibernate3.HibernateAccessor.convertHibernateAccessException(HibernateAccessor.java:410)
at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:411)
at org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374)
at org.springframework.orm.hibernate3.HibernateTemplate.findByCriteria(HibernateTemplate.java:1046)
at org.springframework.orm.hibernate3.HibernateTemplate.findByCriteria(HibernateTemplate.java:1039)
at com.xyz.abc.web.dao.RuleDao.loadActive(RuleDao.java:53)
at com.xyz.abc.web.service.RuleServiceImpl.createRulesByTemplate(RuleServiceImpl.java:39)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
at $Proxy60.createRulesByTemplate(Unknown Source)
at com.xyz.abc.rules.RulesInvoker.checkIsInitialized(RulesInvoker.java:97)
at com.xyz.abc.rules.RulesInvoker.invokeForEvent(RulesInvoker.java:73)
at com.xyz.abc.mdp.RabbitMqMessageProcessor.processMessage(RabbitMqMessageProcessor.java:53)
at sun.reflect.GeneratedMethodAccessor101.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:186)
at com.xyz.abc.backgroundtask.impl.TaskExecutor.invokeMethod(TaskExecutor.java:156)
at com.xyz.abc.backgroundtask.impl.TaskExecutor.invokeBean(TaskExecutor.java:139)
at com.xyz.abc.backgroundtask.impl.TaskExecutor.doExecute(TaskExecutor.java:116)
at com.xyz.abc.backgroundtask.impl.TaskExecutor.executeTask(TaskExecutor.java:104)
at com.xyz.abc.backgroundtask.impl.TaskExecutor.access$200(TaskExecutor.java:39)
at com.xyz.abc.backgroundtask.impl.TaskExecutor$1.doInTransaction(TaskExecutor.java:85)
at com.xyz.abc.backgroundtask.impl.TaskExecutor$1.doInTransaction(TaskExecutor.java:79)
at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:130)
at com.xyz.abc.backgroundtask.impl.TaskExecutor.execute(TaskExecutor.java:79)
at com.xyz.abc.backgroundtask.impl.TaskExecutorThread.run(TaskExecutorThread.java:84)
Caused by: org.apache.commons.dbcp.SQLNestedException: Cannot get a connection, general error
at org.apache.commons.dbcp.PoolingDataSource.getConnection(PoolingDataSource.java:118)
at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:1044)
at org.springframework.orm.hibernate3.LocalDataSourceConnectionProvider.getConnection(LocalDataSourceConnectionProvider.java:81)
at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:446)
at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:167)
at org.hibernate.jdbc.AbstractBatcher.prepareQueryStatement(AbstractBatcher.java:161)
at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1596)
at org.hibernate.loader.Loader.doQuery(Loader.java:717)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:270)
at org.hibernate.loader.Loader.doList(Loader.java:2294)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2172)
at org.hibernate.loader.Loader.list(Loader.java:2167)
at org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:119)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1706)
at org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:347)
at org.springframework.orm.hibernate3.HibernateTemplate$36.doInHibernate(HibernateTemplate.java:1056)
at org.springframework.orm.hibernate3.HibernateTemplate$36.doInHibernate(HibernateTemplate.java:1)
at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:406)
... 33 more
Caused by: java.lang.InterruptedException
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:485)
at org.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:1104)
at org.apache.commons.dbcp.PoolingDataSource.getConnection(PoolingDataSource.java:106)
... 50 more
2012-02-03 10:38:09,399 150696566 [taskRuleExecutorThread] INFO (TaskExecutor.java:93) - org.springframework.transaction.UnexpectedRollbackException: Transaction rolled back because it has been marked as rollback-only
2012-02-03 10:38:09,399 150696566 [taskRuleExecutorThread] INFO (TaskExecutorThread.java:89) - Executor Interrupted
java.lang.InterruptedException: sleep interrupted
at java.lang.Thread.sleep(Native Method)
at com.xyz.abc.backgroundtask.impl.TaskExecutorThread.run(TaskExecutorThread.java:86)
2012-02-03 10:38:09,399 150696566 [taskRuleExecutorThread] INFO (TaskExecutorThread.java:95) - Stopped
2012-02-03 10:38:09,400 150696567 [main] INFO (TaskExecutorThread.java:69) - shutdown
2012-02-03 10:38:09,400 150696567 [taskParatureExecutorThread] INFO (TaskExecutorThread.java:89) - Executor Interrupted
java.lang.InterruptedException: sleep interrupted
at java.lang.Thread.sleep(Native Method)
at com.xyz.abc.backgroundtask.impl.TaskExecutorThread.run(TaskExecutorThread.java:86)
2012-02-03 10:38:09,400 150696567 [taskParatureExecutorThread] INFO
(TaskExecutorThread.java:95) - Stopped
2012-02-03 10:38:09,400 150696567 [main] INFO (TaskExecutorThread.java:69) - shutdown
答案 0 :(得分：16)
线程在休眠时无法处理中断。因此，当线程退出休眠状态然后处理中断时，您需要捕获异常。该方法在this answer中得到了很好的解释。通常它看起来像这样：
try
{
Thread.sleep(whatever);
}
catch (InterruptedException e)
{
Thread.currentThread().interrupt(); // restore interrupted status
}
答案 1 :(得分：1)
你在代码中某处抛出一个被中断的异常可能是为了表明一个线程应该停止吗？你能提供这种方法的代码：
com.xyz.abc.backgroundtask.impl.TaskExecutorThread.run
答案 2 :(得分：0)
让我们理解您的代码：
while (true) {
// Your logic code
}
它是做什么的？没什么，它只会不断旋转CPU。我们可以终止吗？不在Java中。仅当您按下 Ctrl-C 时，整个 JVM停止时，它才会停止。除非线程本身退出，否则Java中无法终止线程。这是我们必须牢记的原则，其他所有内容都将显而易见。
那么，当我们需要停止一个线程时，我们该如何停止呢？
这是用Java设计的方式。我们可以从外部设置每个线程中都有一个标志。并且线程可能偶尔检查它并停止执行。自愿！方法如下：
Thread loop = new Thread(
new Runnable() {
@Override
public void run() {
while (true) {
if (Thread.interrupted()) {
break;
}
// Your logic code
}
}
}
);
loop.start();