Spring/MyBatis JDBC Verbindung verweigert

Question

Unsicher, was das Problem hier ist. Ich habe dieselbe WAR-Datei auf zwei verschiedenen Rechnern, meinem Desktop und einem Testserver, beide mit der gleichen Version von Tomcat (9) und jdk (1.8.0_121), implementiert. Es funktioniert auf meinem Desktop (Windows 10 x64) aber wirft diesen Fehler auf dem Testserver (Ubuntu 16.04).

Ich habe den Datenbankserver gepingt, damit ich weiß, dass er erreicht werden kann. Ich habe sogar einen Krieg für ein anderes Projekt gemacht, das auf dieselbe Datenbank zugreift und es gab kein Problem, das sich verband.

Was könnte dieses Problem verursachen?

ERROR - [2017-06-12 10:01:53,898]: c.c.m.c.AuthenticationController:174 login 
org.mybatis.spring.MyBatisSystemException: nested exception is 
org.apache.ibatis.exceptions.PersistenceException: 
### Error querying database. Cause: 
org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Network error 
IOException: Connection refused (Connection refused) 
### The error may exist in com/company/model/user/User.xml 
### The error may involve com.company.model.user.UserMapper.getUserByUsernamePassword 
### The error occurred while executing a query 
### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Network error IOException: Connection refused (Connection refused) 
at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:79) ~[mybatis-spring-1.3.0.jar:1.3.0] 
at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:447) ~[mybatis-spring-1.3.0.jar:1.3.0] 
at com.sun.proxy.$Proxy613.selectOne(Unknown Source) ~[na:na] 
at org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:167) ~[mybatis-spring-1.3.0.jar:1.3.0] 
at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:75) ~[mybatis-3.4.0.jar:3.4.0] 
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:53) ~[mybatis-3.4.0.jar:3.4.0] 
at com.sun.proxy.$Proxy786.getUserByUsernamePassword(Unknown Source) ~[na:na] 
at com.company.model.user.DefaultUserService.getUserByUsernamePassword(DefaultUserService.java:33) ~[aps_maven-1.0.jar:na] 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_131] 
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_131] 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_131] 
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_131] 
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317) ~[spring-aop-4.0.0.RELEASE.jar:4.0.0.RELEASE] 
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) ~[spring-aop-4.0.0.RELEASE.jar:4.0.0.RELEASE] 
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) ~[spring-aop-4.0.0.RELEASE.jar:4.0.0.RELEASE] 
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:98) ~[spring-tx-4.0.0.RELEASE.jar:4.0.0.RELEASE] 
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:262) ~[spring-tx-4.0.0.RELEASE.jar:4.0.0.RELEASE] 
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:95) ~[spring-tx-4.0.0.RELEASE.jar:4.0.0.RELEASE] 
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.0.0.RELEASE.jar:4.0.0.RELEASE] 
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) ~[spring-aop-4.0.0.RELEASE.jar:4.0.0.RELEASE] 
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.0.0.RELEASE.jar:4.0.0.RELEASE] 
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207) ~[spring-aop-4.0.0.RELEASE.jar:4.0.0.RELEASE] 
at com.sun.proxy.$Proxy789.getUserByUsernamePassword(Unknown Source) ~[na:na] 
at com.company.mediabuilder.controller.AuthenticationController.login(AuthenticationController.java:129) ~[classes/:na] 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_131] 
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_131] 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_131] 
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_131] 
at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:214) [spring-web-4.0.0.RELEASE.jar:4.0.0.RELEASE] 
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132) [spring-web-4.0.0.RELEASE.jar:4.0.0.RELEASE] 
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104) [spring-webmvc-4.0.0.RELEASE.jar:4.0.0.RELEASE] 
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:748) [spring-webmvc-4.0.0.RELEASE.jar:4.0.0.RELEASE] 
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:689) [spring-webmvc-4.0.0.RELEASE.jar:4.0.0.RELEASE] 
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83) [spring-webmvc-4.0.0.RELEASE.jar:4.0.0.RELEASE] 
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:945) [spring-webmvc-4.0.0.RELEASE.jar:4.0.0.RELEASE] 
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:876) [spring-webmvc-4.0.0.RELEASE.jar:4.0.0.RELEASE] 
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:931) [spring-webmvc-4.0.0.RELEASE.jar:4.0.0.RELEASE] 
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:833) [spring-webmvc-4.0.0.RELEASE.jar:4.0.0.RELEASE] 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:661) [servlet-api.jar:na] 
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:807) [spring-webmvc-4.0.0.RELEASE.jar:4.0.0.RELEASE] 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742) [servlet-api.jar:na] 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) [catalina.jar:9.0.0.M21] 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [catalina.jar:9.0.0.M21] 
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) [tomcat-websocket.jar:9.0.0.M21] 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [catalina.jar:9.0.0.M21] 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [catalina.jar:9.0.0.M21] 
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) [spring-web-4.0.0.RELEASE.jar:4.0.0.RELEASE] 
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108) [spring-web-4.0.0.RELEASE.jar:4.0.0.RELEASE] 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [catalina.jar:9.0.0.M21] 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [catalina.jar:9.0.0.M21] 
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) [catalina.jar:9.0.0.M21] 
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [catalina.jar:9.0.0.M21] 
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:475) [catalina.jar:9.0.0.M21] 
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) [catalina.jar:9.0.0.M21] 
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80) [catalina.jar:9.0.0.M21] 
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624) [catalina.jar:9.0.0.M21] 
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) [catalina.jar:9.0.0.M21] 
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) [catalina.jar:9.0.0.M21] 
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:498) [tomcat-coyote.jar:9.0.0.M21] 
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-coyote.jar:9.0.0.M21] 
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:796) [tomcat-coyote.jar:9.0.0.M21] 
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1366) [tomcat-coyote.jar:9.0.0.M21] 
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-coyote.jar:9.0.0.M21] 
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_131] 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_131] 
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-util.jar:9.0.0.M21] 
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_131] 
Caused by: org.apache.ibatis.exceptions.PersistenceException: 

Lassen Sie mich wissen, ob es irgendwelche anderen Konfigurationsdateien sind Sie mich schließen möchten. Da ich die Quelle des Fehlers nicht lokalisieren kann, war ich nicht sicher, was relevant war.

Grüße.

Answer 1

Um mein Problem zu lösen, habe ich es funktioniert, indem Sie alle Abhängigkeiten in meiner pom.xml-Datei entfernen. Ich baute dann mein Projekt jedes Mal, nach Fehlern suchen und das Hinzufügen anschließend jede Abhängigkeit in zurück

Es stellte sich heraus, dass ich eine Abhängigkeit fehlte.

<dependency> 
    <groupId>org.springframework</groupId> 
    <artifactId>spring-aspects</artifactId> 
    <version>${spring.version}</version> 
</dependency>