Cannot open connection

org.hibernate.exception.JDBCConnectionException: Cannot open connection

at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:97)

at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)

at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:52)

at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:449)

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:1577)

at org.hibernate.loader.Loader.doQuery(Loader.java:696)

at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:259)

at org.hibernate.loader.Loader.doList(Loader.java:2232)

at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2129)

at org.hibernate.loader.Loader.list(Loader.java:2124)

at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:401)

at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:363)

at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:196)

at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1149)

at org.hibernate.impl.QueryImpl.list(QueryImpl.java:102)

at org.house.utils.BaseDao.SelectAll(BaseDao.java:142)

at org.house.Dao.impl.StreetdaoImpl.street(StreetdaoImpl.java:17)

at org.house.servlet.showList.doPost(showList.java:91)

at org.house.servlet.showList.doGet(showList.java:72)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)

at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)

at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002)

at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)

at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)

at java.lang.Thread.run(Thread.java:744)

Caused by: java.sql.SQLRecoverableException: IO 错误: The Network Adapter could not establish the connection

at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:478)

at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:547)

at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:225)

at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:29)

at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:556)

at java.sql.DriverManager.getConnection(DriverManager.java:571)

at java.sql.DriverManager.getConnection(DriverManager.java:187)

at org.hibernate.connection.DriverManagerConnectionProvider.getConnection(DriverManagerConnectionProvider.java:133)

at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:446)

... 34 more

Caused by: oracle.net.ns.NetException: The Network Adapter could not establish the connection

at oracle.net.nt.ConnStrategy.execute(ConnStrategy.java:372)

at oracle.net.resolver.AddrResolution.resolveAndExecute(AddrResolution.java:419)

at oracle.net.ns.NSProtocol.establishConnection(NSProtocol.java:873)

at oracle.net.ns.NSProtocol.connect(NSProtocol.java:258)

at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:1577)

at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:353)

... 42 more

Caused by: java.net.ConnectException: Connection refused: connect

at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)

at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85)

at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)

at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)

at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)

at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)

at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)

at java.net.Socket.connect(Socket.java:579)

at oracle.net.nt.TcpNTAdapter.connect(TcpNTAdapter.java:206)

at oracle.net.nt.ConnOption.connect(ConnOption.java:120)

at oracle.net.nt.ConnStrategy.execute(ConnStrategy.java:350)

... 47 more

错误分析：

原因是服务没开，把服务开开就好了