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ClassNotFoundException com.mysql.cj.jdbc.Driver

I build a jar file and this jar file was placed on the linux server.
This jar file catches files in specific folder and execute an insert query.
But I got this error.
I have no idea how to solve this. I already searched and tried setting classpath and etc.
How can I build a jar with jdbc.driver jar?
is there anyone who knows this?
java.lang.ClassNotFoundException: com.mysql.cj.jdbc.Driver
at java.net.URLClassLoader.findClass(URLClassLoader.java:387)
at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:352)
at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at
com.macrogenusa.cjp.ab1.server.DaoManager.updatePlateRun(DaoManager.java:33)
at UntarFromBoston.update(UntarFromBoston.java:211)
at UntarFromBoston.run(UntarFromBoston.java:43)
at UntarFromBoston.main(UntarFromBoston.java:215)

ClassNotFoundException: com.allen_sauer.gwt.log.client.WrappedClientThrowable

I'm getting class not found exception for com.allen_sauer.gwt.log.client.WrappedClientThrowable while starting my application in tomcat 8.0.36.
Libraries used
- gwt-user-2.8
- gwt-servlet-2.7.0
- spring4gwt-0.0.1
- gwt-log-3.1.2
This class is present in gwt-log but in package com.allen_sauer.gwt.log.shared. My application code is referring to the correct package but still I'm getting this exception:
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:153)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:940)
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1816)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NoClassDefFoundError: com/allen_sauer/gwt/log/client/WrappedClientThrowable
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
at java.lang.Class.getDeclaredMethods(Class.java:1975)
at org.apache.catalina.util.Introspection.getDeclaredMethods(Introspection.java:127)
at org.apache.catalina.startup.WebAnnotationSet.loadMethodsAnnotation(WebAnnotationSet.java:273)
at org.apache.catalina.startup.WebAnnotationSet.loadApplicationServletAnnotations(WebAnnotationSet.java:133)
at org.apache.catalina.startup.WebAnnotationSet.loadApplicationAnnotations(WebAnnotationSet.java:65)
at org.apache.catalina.startup.ContextConfig.applicationAnnotationsConfig(ContextConfig.java:335)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:782)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:306)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:95)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5202)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)
... 10 more
Caused by: java.lang.ClassNotFoundException: com.allen_sauer.gwt.log.client.WrappedClientThrowable
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1333)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1167)
... 24 more
Not sure which library is referring to the old package. Any help is appreciated. Thanks in advance.

Seems like you have a gwt-user and gwt-servlet in different versions.
It would be great if you could post your full "mvn dependency:tree" (or gradle equivalent)
EDIT:
Feels like you are using a somewhat outdated logging library.
https://github.com/fredsa/gwt-log/wiki/GettingStarted
Try adding this guy to your dependencies: compile 'com.allen-sauer.gwt.log:gwt-log:3.3.2

Seems this issue was introduced due to some duplicate compiled classes. I got the application from a different team who have recently converted it to gradle build. When I checked the project structure and gradle scripts, I found many inconsistencies. Basically project was not converted correctly.
After I converted it correctly, this error was gone.
Thanks for the insights, really appreciate it

Spring resource not found - 3.2

We have a project which is using Spring with 3.0 xsd running on tomcat 7. I tried to change the xsd to Spring 3.2 as we have been using spring jars for spring 3.2.4 and 'exclude-mapping' cannot be used with spring 3.0 xsd.
After this change, application stops working, though it does not throw any errors while starting/stopping the server or adding and removing the application.
After the change any request to the application fails with error 404.
Here are the Jars we are using:
beandoc-0.7.0.jar
commons-fileupload-1.2.2.jar
commons-io-1.3.2.jar
commons-logging-1.2-javadoc.jar
commons-logging-1.2.jar
jstl.jar
log4j-1.2.14.jar
ojdbc6.jar
slf4j-api-1.5.6.jar
slf4j-log4j12-1.5.6.jar
spring-beandoc-0.7.1.jar
spring-beans-3.2.4.RELEASE.jar
spring-context-3.2.4.RELEASE.jar
spring-context-support-3.2.4.RELEASE.jar
spring-core-3.2.4.RELEASE.jar
spring-dao-2.0.8.jar
spring-expression-3.2.4.RELEASE.jar
spring-jdbc-3.2.4.RELEASE.jar
spring-web-3.2.4.RELEASE.jar
spring-webmvc-3.2.4.RELEASE.jar
spring-webmvc-portlet-3.2.4.RELEASE.jar
standard.jar
When we try to clean the server, it results in the below exception:
SEVERE: Exception starting Context with name [/COETOOLSACCL]
org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/COETOOLSACCL]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:153)
at org.apache.catalina.core.StandardContext.reload(StandardContext.java:4119)
at org.apache.catalina.loader.WebappLoader.backgroundProcess(WebappLoader.java:425)
at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1341)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1542)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1552)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1552)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1520)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NoClassDefFoundError: org/springframework/web/context/support/ServletRequestHandledEvent
at java.lang.Class.getDeclaredFields0(Native Method)
at java.lang.Class.privateGetDeclaredFields(Unknown Source)
at java.lang.Class.getDeclaredFields(Unknown Source)
at org.apache.catalina.util.Introspection.getDeclaredFields(Introspection.java:106)
at org.apache.catalina.startup.WebAnnotationSet.loadFieldsAnnotation(WebAnnotationSet.java:270)
at org.apache.catalina.startup.WebAnnotationSet.loadApplicationServletAnnotations(WebAnnotationSet.java:139)
at org.apache.catalina.startup.WebAnnotationSet.loadApplicationAnnotations(WebAnnotationSet.java:65)
at org.apache.catalina.startup.ContextConfig.applicationAnnotationsConfig(ContextConfig.java:416)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:890)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:387)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5503)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)
... 8 more
Caused by: java.lang.ClassNotFoundException: org.springframework.web.context.support.ServletRequestHandledEvent
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1891)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1734)
... 22 more
This exception prevails regardless of the xsd versions and with 3.0 application runs normal despite we get this error while cleaning the server.
Please help.

Java .war deployment issues on jboss-as-7.1.1.Final

I am working on a dynamic web project (StudentManagement.war) which relies on an EJB (StudentManagementEJB.jar) for database interfacing. The EJB project has been added to the web project's class path. On deployment, however, the following exceptions are thrown:
22:23:21,275 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-4) MSC00001: Failed to start service jboss.deployment.unit."StudentManagement.war".POST_MODULE: org.jboss.msc.service.StartException in service jboss.deployment.unit."StudentManagement.war".POST_MODULE: Failed to process phase POST_MODULE of deployment "StudentManagement.war"
at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:119) [jboss-as-server-7.1.1.Final.jar:7.1.1.Final]
at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]
at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [rt.jar:1.7.0_45]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [rt.jar:1.7.0_45]
at java.lang.Thread.run(Unknown Source) [rt.jar:1.7.0_45]
Caused by: java.lang.RuntimeException: Error getting reflective information for class student.management.ManageStudentServlet with ClassLoader ModuleClassLoader for Module "deployment.StudentManagement.war:main" from Service Module Loader
at org.jboss.as.server.deployment.reflect.DeploymentReflectionIndex.getClassIndex(DeploymentReflectionIndex.java:70) [jboss-as-server-7.1.1.Final.jar:7.1.1.Final]
at org.jboss.as.ee.metadata.MethodAnnotationAggregator.runtimeAnnotationInformation(MethodAnnotationAggregator.java:58)
at org.jboss.as.ee.component.deployers.InterceptorAnnotationProcessor.handleAnnotations(InterceptorAnnotationProcessor.java:85)
at org.jboss.as.ee.component.deployers.InterceptorAnnotationProcessor.processComponentConfig(InterceptorAnnotationProcessor.java:70)
at org.jboss.as.ee.component.deployers.InterceptorAnnotationProcessor.deploy(InterceptorAnnotationProcessor.java:55)
at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:113) [jboss-as-server-7.1.1.Final.jar:7.1.1.Final]
... 5 more
Caused by: java.lang.NoClassDefFoundError: Lstudent/management/ManageStudentSessionBeanLocal;
at java.lang.Class.getDeclaredFields0(Native Method) [rt.jar:1.7.0_45]
at java.lang.Class.privateGetDeclaredFields(Unknown Source) [rt.jar:1.7.0_45]
at java.lang.Class.getDeclaredFields(Unknown Source) [rt.jar:1.7.0_45]
at org.jboss.as.server.deployment.reflect.ClassReflectionIndex.<init>(ClassReflectionIndex.java:57) [jboss-as-server-7.1.1.Final.jar:7.1.1.Final]
at org.jboss.as.server.deployment.reflect.DeploymentReflectionIndex.getClassIndex(DeploymentReflectionIndex.java:66) [jboss-as-server-7.1.1.Final.jar:7.1.1.Final]
... 10 more
Caused by: java.lang.ClassNotFoundException: student.management.ManageStudentSessionBeanLocal from [Module "deployment.StudentManagement.war:main" from Service Module Loader]
at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:190)
at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:468)
at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:456)
at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398)
at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:120)
... 15 more
This shows that the web module cannot find classes defined within the bean. I've changed my default: %JBOSS_HOME%\standalone\deployments\StudentManagement.war\META-INF\MANIFEST.MF to:
Manifest-Version: 1.0
Class-Path: file:/C:/Utils/jboss-as-7.1.1.Final/jboss-as-7.1.1.Final/standalone/deployments/StudentManagementEJB.jar
In spite of this the exception persists. There are two spaces between Class-Path: and the URI and a space after the end of the URI(../standalone) followed by a new line character.
Is there something wrong in my syntax?
I am using java ee 7, jboss-as-7.1.1.Final and Win 7 x64.

It turns out that the StudentManagementEJB.jar file is not copied into the /lib directory upon deployment. Aside from adding it to the Class-Path, it must also be copied to
%JBOSS_HOME%\standalone\deployments\<ProjectName>.war\WEB-INF\lib
directory(if the project is deployed as .war). In this case ProjectName is StudentManagement.

Do not reference to the deployments-folder (standalone/deployments). The deployed applications are not really deployed there, but copied from there to the data-directory, or they are not even in the deployments-folder, if you use other forms of deployment, e.g. jboss-cli.bat
There are some ways you can solve this.
1) Don't package the EJB separately, but include it into the WAR (the easiest).
2) Create an EAR and package the WAR and EJB-JAR together into the EAR (the classic).
3) Create a module from the interface-classes and reference from EJB.jar and WAR to the module. See e.g. "Dependencies:" in https://docs.jboss.org/author/display/AS71/Class+Loading+in+AS7
4) Reference in the WARs MANIFEST to the EJB-deployment like:
Dependencies:deployment.StudentManagementEJB.jar
From https://docs.jboss.org/author/display/AS71/Class+Loading+in+AS7:
Module names for top level deployments follow the format
deployment.myarchive.war while sub deployments are named like
deployment.myear.ear.mywar.war.
This means that it is possible for a deployment to import classes from
another deployment using the other deployments module name, the
details of how to add an explicit module dependency are explained
below.

org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/CollegeWebsite]] [duplicate]

This question already has answers here:
How to fix java.lang.UnsupportedClassVersionError: Unsupported major.minor version
(51 answers)
Closed 10 years ago.
org.apache.catalina.core.ContainerBase addChildInternal
SEVERE: ContainerBase.addChild: start:
org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/CollegeWebsite]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:895)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:871)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:615)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:962)
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1603)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:469)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:332)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:597)
at java.lang.Thread.run(Thread.java:637)
Caused by: java.lang.UnsupportedClassVersionError: com/Servlets/AddCourse : Unsupported major.minor version 51.0 (unable to load class com.Servlets.AddCourse)
at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2893)
at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1170)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1678)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1556)
at org.apache.catalina.startup.WebAnnotationSet.loadClass(WebAnnotationSet.java:480)
at org.apache.catalina.startup.WebAnnotationSet.loadApplicationServletAnnotations(WebAnnotationSet.java:130)
at org.apache.catalina.startup.WebAnnotationSet.loadApplicationAnnotations(WebAnnotationSet.java:66)
at org.apache.catalina.startup.ContextConfig.applicationAnnotationsConfig(ContextConfig.java:381)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:858)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:345)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5161)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
... 11 more
How can I overcome this error? My project was deployed on Eclipse easily but it can't deploy when I deploy it directly through Tomcat server.

You have a version conflict, please verify whether compiled version and JVM of Tomcat version are same.
you can do it by examining tomcat startup .bat , looking for JAVA_HOME

This error happens because of your Jre version of Eclipse and Tomcat are mismatched ..either change eclipse one to tomcat one or ViceVersa..
Both should be same ..Java version mismatched ..Check it