HikariPool-1 – 连接不可用，请求超时后
我正在使用HikariCP 2.4.7连接池。 在启动应用程序之后一切都很好但是在一段时间之后没有调用getConnection()我在尝试getConnection()时遇到了这个错误：
java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 42734ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:555) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:188) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:147) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:99) at pl.airly.database.ComplexOperations.getSensorDataFromArea(ComplexOperations.java:310) at pl.airly.database.ComplexOperations.getMeasurementsInAreaWithinTimeFrame(ComplexOperations.java:201) at pl.airly.ResponseGenerator.getResponseAdequateToRequest(ResponseGenerator.java:139) at sun.reflect.GeneratedMethodAccessor24.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:114) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861) at javax.servlet.http.HttpServlet.service(HttpServlet.java:622) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:87) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:108) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:522) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:1110) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:785) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1425) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:745)
在启动期间我正在初始化HikariDataSource ：
hikariDataSource = new HikariDataSource(); hikariDataSource.setDriverClassName("org.postgresql.Driver"); hikariDataSource.setUsername(DATABASE_USER_NAME); hikariDataSource.setPassword(DATABASE_PASSWORD); hikariDataSource.setJdbcUrl(DATABASE_URL); hikariDataSource.setLeakDetectionThreshold(5000);
然后我就像这样使用它：
try(java.sql.Connection conn = Connection.hikariDataSource.getConnection()) { Record1 record1 = DSL.using(conn).select(SENSOR.ID) //jOOQ .from(SENSOR) .where(SENSOR.ID.equal(1)) .limit(1) .fetchOne(); Debug.println(record1.getValue(0).toString()); } catch (SQLException e) { e.printStackTrace(); }
我究竟做错了什么？ 如何解决这个问题？
编辑：
添加它可以解决问题：
hikariDataSource.setIdleTimeout(60000); hikariDataSource.setConnectionTimeout(60000); hikariDataSource.setValidationTimeout(3000); hikariDataSource.setLoginTimeout(5); hikariDataSource.setMaxLifetime(60000);
在HikariCP之前，它可能与服务器关闭连接有关，但我不确定。 任何评论都将不胜感激。
我首先要说的是，我不是Java程序员，你也可以尝试关闭jOOQ DSL：
try(java.sql.Connection conn = Connection.hikariDataSource.getConnection()) { try (Record1 record1 = DSL.using(conn).select(SENSOR.ID)) { .from(SENSOR) .where(SENSOR.ID.equal(1)) .limit(1) .fetchOne(); Debug.println(record1.getValue(0).toString()); } catch (Exception e) { e.printStackTrace(); } } catch (SQLException e) { e.printStackTrace(); }