关闭 tomcat 时报错了，提示可能是内存泄露（附上部分代码）
UserDao 只有一写了一个 findAll 方法，启动的时候，打log，获取数据正常，能找到所有的用户，但关闭时debug 区有错误，提示可能是内存泄露
SqlSessionFactoryUtils
public class SqlSessionFactoryUtils {
private static String RESOURCE = "mybatis-config.xml";
private static SqlSessionFactory sqlSessionFactory;
private static ThreadLocal<SqlSession> threadLocal = new ThreadLocal<SqlSession>();
public static void initSqlSessionFactory() {
InputStream is = null;
try {
is = Resources.getResourceAsStream(RESOURCE);
} catch (IOException e) {
e.printStackTrace();
}
sqlSessionFactory = new SqlSessionFactoryBuilder().build(is);
}
public static SqlSessionFactory getSqlSessionFactory() {
return sqlSessionFactory;
}
public static void close() {
SqlSession session = threadLocal.get();
if (session != null) {
System.out.println(session);
session.close();
threadLocal.set(null);
}
}
}
UserDao
public class UserDao {
private List<User> listUsers;
private SqlSession sqlSession;
public SqlSession getSession() {
sqlSession = SqlSessionFactoryUtils.getSqlSessionFactory().openSession();
return sqlSession;
}
public List<User> findAll() {
try {
listUsers = getSession().selectList("findAll");
} catch (Exception e) {
e.printStackTrace();
} finally {
sqlSession.close();
}
return listUsers;
}
}63
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walkingway
2018-03-12 22:19:17
用了老外的代码后报错减少到了 1 条（之前是3条）前两个错没有了
容器销毁中 12-Mar-2018 22:15:58.466 INFO [main] org.apache.coyote.AbstractProtocol.stop Stopping ProtocolHandler ["http-nio-8080"] 12-Mar-2018 22:15:58.469 INFO [main] org.apache.coyote.AbstractProtocol.stop Stopping ProtocolHandler ["ajp-nio-8009"] 12-Mar-2018 22:15:58.470 INFO [main] org.apache.coyote.AbstractProtocol.destroy Destroying ProtocolHandler ["http-nio-8080"] 12-Mar-2018 22:15:58.472 SEVERE [main] org.apache.catalina.util.LifecycleBase.handleSubClassException Failed to destroy component [Connector[HTTP/1.1-8080]] org.apache.catalina.LifecycleException: Protocol handler destroy failed at org.apache.catalina.connector.Connector.destroyInternal(Connector.java:994) at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:322) at org.apache.catalina.core.StandardService.destroyInternal(StandardService.java:543) at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:322) at org.apache.catalina.core.StandardServer.destroyInternal(StandardServer.java:860) at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:322) at org.apache.catalina.startup.Catalina.stop(Catalina.java:756) at org.apache.catalina.startup.Catalina.start(Catalina.java:717) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:353) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:493) Caused by: java.io.IOException: Thread signal failed at sun.nio.ch.NativeThread.signal(Native Method) at sun.nio.ch.ServerSocketChannelImpl.implCloseSelectableChannel(ServerSocketChannelImpl.java:292) at java.nio.channels.spi.AbstractSelectableChannel.implCloseChannel(AbstractSelectableChannel.java:234) at java.nio.channels.spi.AbstractInterruptibleChannel.close(AbstractInterruptibleChannel.java:115) at sun.nio.ch.ServerSocketAdaptor.close(ServerSocketAdaptor.java:137) at org.apache.tomcat.util.net.NioEndpoint.unbind(NioEndpoint.java:313) at org.apache.tomcat.util.net.AbstractEndpoint.destroy(AbstractEndpoint.java:1164) at org.apache.coyote.AbstractProtocol.destroy(AbstractProtocol.java:611) at org.apache.catalina.connector.Connector.destroyInternal(Connector.java:990) ... 13 more
walkingway
2018-03-11 22:50:30
搜到个老外的解决办法，试过了起作用，老师看看为啥会这样 https://www.ralph-schuster.eu/2014/07/09/solution-to-tomcat-cant-stop-an-abandoned-connection-cleanup-thread/
walkingway
2018-03-11 19:59:28
具体代码我贴到 github 上了 https://github.com/walkingway/issueproject 老师请看下
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