I have the following in META-INF
<Context>
<Resource type="javax.sql.DataSource"
name="jdbc/TestDB"
factory="org.apache.tomcat.jdbc.pool.DataSourceFactory"
driverClassName="com.mysql.jdbc.Driver"
url="jdbc:mysql://localhost:3306/"
username="mysql_user"
password="mypassword123"/>
</Context>
In my web.xml I have
<resource-ref>
<description>DB Connection</description>
<res-ref-name>jdbc/TestDB</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
In my Java code I have
Context initContext = new InitialContext();
Context envContext = (Context)initContext.lookup("java:/comp/env");
DataSource datasource = (DataSource)envContext.lookup("jdbc/TestDB");
con = datasource.getConnection();
When Tomcat is starting up I get the following error and I have mysql-connector-java-5.1.20-bin.jar in my libs folder. Any idea why?
INFO: Starting Servlet Engine: Apache Tomcat/7.0.27
05-Jun-2012 23:16:29 org.apache.naming.NamingContext lookup
WARNING: Unexpected exception resolving reference
java.sql.SQLException: com.mysql.jdbc.Driver
at org.apache.tomcat.jdbc.pool.PooledConnection.connectUsingDriver(PooledConnection.java:242)
at org.apache.tomcat.jdbc.pool.PooledConnection.connect(PooledConnection.java:175)
at org.apache.tomcat.jdbc.pool.ConnectionPool.createConnection(ConnectionPool.java:684)
at org.apache.tomcat.jdbc.pool.ConnectionPool.borrowConnection(ConnectionPool.java:616)
at org.apache.tomcat.jdbc.pool.ConnectionPool.init(ConnectionPool.java:479)
at org.apache.tomcat.jdbc.pool.ConnectionPool.<init>(ConnectionPool.java:135)
at org.apache.tomcat.jdbc.pool.DataSourceProxy.pCreatePool(DataSourceProxy.java:114)
at org.apache.tomcat.jdbc.pool.DataSourceProxy.createPool(DataSourceProxy.java:101)
at org.apache.tomcat.jdbc.pool.DataSourceFactory.createDataSource(DataSourceFactory.java:501)
at org.apache.tomcat.jdbc.pool.DataSourceFactory.getObjectInstance(DataSourceFactory.java:224)
at org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:143)
at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304)
at org.apache.naming.NamingContext.lookup(NamingContext.java:843)
at org.apache.naming.NamingContext.lookup(NamingContext.java:154)
at org.apache.naming.NamingContext.lookup(NamingContext.java:831)
at org.apache.naming.NamingContext.lookup(NamingContext.java:168)
at org.apache.catalina.core.NamingContextListener.addResource(NamingContextListener.java:1061)
at org.apache.catalina.core.NamingContextListener.createNamingContext(NamingContextListener.java:671)
at org.apache.catalina.core.NamingContextListener.lifecycleEvent(NamingContextListener.java:270)
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)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1566)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1556)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at org.apache.tomcat.jdbc.pool.PooledConnection.connectUsingDriver(PooledConnection.java:235)
... 29 more
You're missing the JDBC drivers for MySQL.
Download them from MySQL's website: http://dev.mysql.com/downloads/connector/j/
Add the driver to your classpath, to your project, or to Tomcat's HOME\lib directory.
I had this issue on Ubuntu with Tomcat7 installed by the apt-get mechanism. The problem was the dbcp used by Tomcat, more specifically commons-dbcp.jar instead of tomcat-dbcp.jar.
To resolve this, I took catalina*.jar and tomcat-dbcp.jar from a copy of Tomcat7 downloaded from the tomcat site and replaced the files in tomcat's lib folder. (commons-dbcp.jar replaced with tomcat-dbcp.jar).
See this link.
Related
I have various versions of tomcat 6 and 7 running across my production environments, so I am attempting to reproduce this on my dev box by adding servers to Eclipse using the various tomcat versions.
I have a server setup running tomcat 6.0.51. To the server.xml, I am adding the various JNDI resources I need to run my application. Everything works as expected.
I am now setting up a tomcat 7.0.50 server instance in Eclispe and I add the exact same JNDI resouces. But this time I receive the following error:
Jun 02, 2017 9:23:42 AM org.apache.catalina.mbeans.GlobalResourcesLifecycleListener createMBeans
SEVERE: Exception processing Global JNDI Resources
javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: oracle.jdbc.pool.OracleDataSourceFactory]
at org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:84)
at javax.naming.spi.NamingManager.getObjectInstance(Unknown Source)
at org.apache.naming.NamingContext.lookup(NamingContext.java:843)
at org.apache.naming.NamingContext.lookup(NamingContext.java:154)
at org.apache.naming.NamingContextBindingsEnumeration.nextElementInternal(NamingContextBindingsEnumeration.java:119)
at org.apache.naming.NamingContextBindingsEnumeration.next(NamingContextBindingsEnumeration.java:73)
at org.apache.naming.NamingContextBindingsEnumeration.next(NamingContextBindingsEnumeration.java:36)
at org.apache.catalina.mbeans.GlobalResourcesLifecycleListener.createMBeans(GlobalResourcesLifecycleListener.java:140)
at org.apache.catalina.mbeans.GlobalResourcesLifecycleListener.createMBeans(GlobalResourcesLifecycleListener.java:112)
at org.apache.catalina.mbeans.GlobalResourcesLifecycleListener.lifecycleEvent(GlobalResourcesLifecycleListener.java:84)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:402)
at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:347)
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:725)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.startup.Catalina.start(Catalina.java:690)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:322)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:456)
Caused by: java.lang.ClassNotFoundException: oracle.jdbc.pool.OracleDataSourceFactory
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:82)
... 22 more
The resource definition, in both server.xml files looks like
<Resource auth="Container"
connectionCacheName="..."
connectionCacheProperties="..."
connectionCachingEnabled="true"
driverClassName="oracle.jdbc.OracleDriver"
factory="oracle.jdbc.pool.OracleDataSourceFactory"
name="..."
password="..."
type="oracle.jdbc.pool.OracleDataSource"
url="jdbc:oracle:thin:#//***.***.***.***:1534/..." user="..." />
The jar file being used is the ojdbc.jar file and is located in the WEB-INF/lib folder inside the application folder.
So I am confused, why would this work in tc 6.0.51 but not in tc 7.0.50? What am I doing wrong?
I have reviewed a lot of "ClassNotFound" exceptions here on SO including this one which describes a very similar situation, but has no good answer.
I am not attempting to deploy, I am simply trying to run this app within Eclipse to debug an issue and I want to be sure I am reproducing the issue under the exact same conditions.
EDIT
Following Krishna's comment, I downloaded the suggested jar file and did actually move it from the webapp's WEB-INF/lib folder to the tc 7.0.50 install /lib folder.
Now the error has changed to:
Jun 02, 2017 11:46:17 AM org.apache.catalina.mbeans.GlobalResourcesLifecycleListener createMBeans
SEVERE: Exception processing Global JNDI Resources
javax.naming.NamingException: Could not create resource factory instance [Root exception is java.lang.ClassCastException: oracle.jdbc.pool.OracleConnectionPoolDataSource cannot be cast to javax.naming.spi.ObjectFactory]
at org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:105)
at javax.naming.spi.NamingManager.getObjectInstance(Unknown Source)
at org.apache.naming.NamingContext.lookup(NamingContext.java:843)
at org.apache.naming.NamingContext.lookup(NamingContext.java:154)
at org.apache.naming.NamingContextBindingsEnumeration.nextElementInternal(NamingContextBindingsEnumeration.java:119)
at org.apache.naming.NamingContextBindingsEnumeration.next(NamingContextBindingsEnumeration.java:73)
at org.apache.naming.NamingContextBindingsEnumeration.next(NamingContextBindingsEnumeration.java:36)
at org.apache.catalina.mbeans.GlobalResourcesLifecycleListener.createMBeans(GlobalResourcesLifecycleListener.java:140)
at org.apache.catalina.mbeans.GlobalResourcesLifecycleListener.createMBeans(GlobalResourcesLifecycleListener.java:112)
at org.apache.catalina.mbeans.GlobalResourcesLifecycleListener.lifecycleEvent(GlobalResourcesLifecycleListener.java:84)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:402)
at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:347)
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:725)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.startup.Catalina.start(Catalina.java:690)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:322)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:456)
Caused by: java.lang.ClassCastException: oracle.jdbc.pool.OracleConnectionPoolDataSource cannot be cast to javax.naming.spi.ObjectFactory
at org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:101)
... 22 more
Reading this apache tomcat users mailing list I added the specified type of "javax.sql.DataSource", but to no avail.
Other suggestions?
Edit 2
Removing the factory="oracle.jdbc.pool.OracleDataSourceFactory" from the resource configuration did help the issue, but then is my connected to the database still a pooled connection?
I am facing issue in connecting to databse!!!
I have added the ojdbc14.jar but somehow it is not capturing the jar.
SEVERE: Servlet.service() for servlet [MyJaxApp] in context with path [/develop-without-web.xml] threw exception [org.glassfish.jersey.server.ContainerException: java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver] with root cause
java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1702)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1547)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at MyResource.fun(MyResource.java:33)
I am trying to run a Spring MVC application in my local machine through Tomcat, but I am seeing:
NoClassDefFoundError: javax/validation/ValidatorFactory
I have validation-api-1.0.0.GA.jar in webapp's lib folder. I am using Tomcat 7. Any guidance would be appreciated.
org.springframework.beans.factory.BeanDefinitionStoreException: Unexpected exception parsing XML document from ServletContext resource [/WEB-INF/dispatcher-servlet.xml]; nested exception is java.lang.NoClassDefFoundError: javax/validation/ValidatorFactory
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:412)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:334)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:302)
at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:174)
at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:209)
at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:180)
at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:124)
at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:93)
at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:130)
at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:537)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:451)
at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:276)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:197)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:47)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4887)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5381)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.NoClassDefFoundError: javax/validation/ValidatorFactory
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1629)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1559)
at org.springframework.web.servlet.config.AnnotationDrivenBeanDefinitionParser.getValidator(AnnotationDrivenBeanDefinitionParser.java:159)
at org.springframework.web.servlet.config.AnnotationDrivenBeanDefinitionParser.parse(AnnotationDrivenBeanDefinitionParser.java:106)
at org.springframework.beans.factory.xml.NamespaceHandlerSupport.parse(NamespaceHandlerSupport.java:73)
at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1438)
at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1428)
at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:184)
at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.doRegisterBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:140)
at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.registerBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:111)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.registerBeanDefinitions(XmlBeanDefinitionReader.java:493)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:390)
... 23 more
Caused by: java.lang.ClassNotFoundException: javax.validation.ValidatorFactory
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
Complete set of jar files I am using is
antlr-2.7.6.jar
antlr-runtime-3.0.jar
aopalliance-1.0.jar
asm-3.3.1.jar
aspectjrt.jar
aspectjweaver-1.6.6.jar
cglib-2.2.2.jar
commons-beanutils-1.8.0.jar
commons-collections-3.2.1.jar
commons-digester-2.0.jar
commons-lang-2.3.jar
commons-logging-1.1.1.jar
displaytag-1.2.jar
dom.jar
dom4j.jar
hibernate-validator-4.2.0.Final.jar
hibernate-validator-annotation-processor-4.2.0.Final.jar
jackson-all-1.8.10.jar
jaxp-api.jar
jaxp-ri.jar
jaxrpc.jar
jdom.jar
jstl-1.2.jar
log4j-1.2.15.jar
ojdbc6.jar
org.springframework.aop-3.0.5.RELEASE.jar
org.springframework.asm-3.0.5.RELEASE.jar
org.springframework.aspects-3.0.5.RELEASE.jar
org.springframework.beans-3.0.5.RELEASE.jar
org.springframework.context-3.0.5.RELEASE.jar
org.springframework.context.support-3.0.5.RELEASE.jar
org.springframework.core-3.0.5.RELEASE.jar
org.springframework.expression-3.0.5.RELEASE.jar
org.springframework.jdbc-3.0.5.RELEASE.jar
org.springframework.transaction-3.0.5.RELEASE.jar
org.springframework.web-3.0.5.RELEASE.jar
org.springframework.web.servlet-3.0.5.RELEASE.jar
org.springframework.web.struts-3.0.5.RELEASE.jar
sax.jar
SecurityFilter.jar
slf4j-api-1.6.4.jar
slf4j-log4j12-1.6.4.jar
tiles-api-2.2.2.jar
tiles-core-2.2.2.jar
tiles-extras-2.2.2.jar
tiles-jsp-2.2.2.jar
tiles-servlet-2.2.2.jar
tiles-servlet-wildcard-2.2.2.jar
tiles-template-2.2.2.jar
validation-api-1.0.0.GA.jar
You have the necessary jar file you need in hibernate-validator. This jar includes the javax.validation.ValidatorFactoryvalidation-api. So if you are including validation-api explicitly, you might have dependency conflicts. If not, you might just be having class reloading issues. Try cleaning your tomcat and restarting your IDE.
add to pom.xml
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>
😤 I encountered the problem when I launched my tests for the first time.
The problem comes from an incompatibility between the test dependency and the validation dependency.
📝 My pom.xml:
<dependency>
<groupId>jakarta.validation</groupId>
<artifactId>jakarta.validation-api</artifactId>
<version>3.0.2</version>
</dependency>
😀 I solved the problem, I replaced jakarta.validation-api for spring-boot-starter-validation.
📝 My pom.xml:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>
I had the same problem.
For 2 months i was trying to find solution.
There was a error i made.
I copied hibernate validator jar and pasted it in java installation directory.
Now i was using maven which also downloaded the validator jar.
There where two jars present and so the error arise.
The problem was solved accidentally when i reinstalled java in my system.
For me it was a conflict with jakarta.validation version 3.0.1. Rolling it back to 2.0.2 fixed it.
Include jakarta.validation-api within your project jar file , and that will force Tomcat to use it. in pom.xml add scope provided as follows:
<dependency>
<groupId>jakarta.validation</groupId>
<artifactId>jakarta.validation-api</artifactId>
<version>3.0.2</version>
<scope>provided</scope>
</dependency>
good luck.
I want to implement connection pooling on my Tomcat server. Here is my context.xml file (placed under WebContent/META-INF/context.xml:
<Context path="/evappserver" reloadable="true">
<Resource
name="jdbc/evapp"
auth="Container"
type="javax.sql.DataSource"
factory="org.apache.tomcat.jdbc.pool.DataSourceFactory"
initialSize="34"
maxActive="377"
maxIdle="233"
minIdle="89"
timeBetweenEvictionRunsMillis="34000"
minEvictableIdleTimeMillis="55000"
validationQuery="SELECT 1"
validationInterval="34"
testOnBorrow="true"
removeAbandoned="true"
removeAbandonedTimeout="55"
username="root"
password=""
driverClassName="com.mysql.jdbc.Driver"
url="jdbc:mysql://localhost:3306/evapp?allowMultiQueries=true"
/>
</Context>
I have a maven project so the mysql jdbc driver is imported via the pom.xml file, like this:
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.6</version>
</dependency>
Here is my java code which throws the exception:
Context initContext = new InitialContext();
Context envContext = (Context) initContext.lookup("java:/comp/env");
dataSource = (DataSource) envContext.lookup("jdbc/evapp"); //here is the exception
Here is the exception:
May 13, 2014 10:39:58 AM org.apache.naming.NamingContext lookup
WARNING: Unexpected exception resolving reference
java.sql.SQLException: com.mysql.jdbc.Driver
at org.apache.tomcat.jdbc.pool.PooledConnection.connectUsingDriver(PooledConnection.java:254)
at org.apache.tomcat.jdbc.pool.PooledConnection.connect(PooledConnection.java:182)
at org.apache.tomcat.jdbc.pool.ConnectionPool.createConnection(ConnectionPool.java:702)
at org.apache.tomcat.jdbc.pool.ConnectionPool.borrowConnection(ConnectionPool.java:634)
at org.apache.tomcat.jdbc.pool.ConnectionPool.init(ConnectionPool.java:488)
at org.apache.tomcat.jdbc.pool.ConnectionPool.<init>(ConnectionPool.java:144)
at org.apache.tomcat.jdbc.pool.DataSourceProxy.pCreatePool(DataSourceProxy.java:116)
at org.apache.tomcat.jdbc.pool.DataSourceProxy.createPool(DataSourceProxy.java:103)
at org.apache.tomcat.jdbc.pool.DataSourceFactory.createDataSource(DataSourceFactory.java:539)
at org.apache.tomcat.jdbc.pool.DataSourceFactory.getObjectInstance(DataSourceFactory.java:237)
at org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:143)
at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:321)
at org.apache.naming.NamingContext.lookup(NamingContext.java:843)
at org.apache.naming.NamingContext.lookup(NamingContext.java:154)
at org.apache.naming.NamingContext.lookup(NamingContext.java:831)
at org.apache.naming.NamingContext.lookup(NamingContext.java:168)
at com.evappserver.dblayer.DBType.<init>(DBType.java:62)
at com.evappserver.dblayer.MySqlDB.<init>(MySqlDB.java:16)
at com.evappserver.logiclayer.BaseLogic.getMainDbConnection(BaseLogic.java:19)
at com.evappserver.logiclayer.PasswordLoginLogic.doLogin(PasswordLoginLogic.java:27)
at com.evappserver.servlets.PasswordLoginServlet.doGet(PasswordLoginServlet.java:37)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
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:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$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:722)
Caused by: java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:266)
at org.apache.tomcat.jdbc.pool.PooledConnection.connectUsingDriver(PooledConnection.java:246)
... 38 more
Is there something wrong with this configuration?
I think you should include the driver for MySQL in your tomcat /lib folder instead of deploying it along with your web application. This way the server will find the proper classes to instantiate your connection pool and everything should go fine.
check if the classpath of your project contains the file mysql-connector-java-5.1.6.jar. Did maven run without problems?
I had this same problem. For a reason unknown to me, putting the mysql-connector-java*.jar in WEB-INF/lib no longer works in Ubuntu LTS 14.04
I solved it by copying this file (and this file alone) to /usr/share/tomcat7/lib and restarted tomcat7 as a service service tomcat7 restart and everything sprang to life.
Best of luck
I am getting a null pointer exception when trying to set up datasource in spring's tc server. Which is basically a Tomcat at its core. Here is the exception I am getting.
org.apache.naming.NamingContext lookup
WARNING: Unexpected exception resolving reference
java.lang.NullPointerException
at java.util.Hashtable.put(Hashtable.java:394)
at java.util.Properties.setProperty(Properties.java:143)
at org.apache.tomcat.jdbc.pool.DataSourceFactory.parsePoolProperties(DataSourceFactory.java:38 0)
at org.apache.tomcat.jdbc.pool.DataSourceFactory.createDataSource(DataSourceFactory.java:439)
at org.apache.tomcat.jdbc.pool.DataSourceFactory.getObjectInstance(DataSourceFactory.java:204)
at org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:140)
at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304)
at org.apache.naming.NamingContext.lookup(NamingContext.java:793)
at org.apache.naming.NamingContext.lookup(NamingContext.java:140)
at org.apache.naming.NamingContext.lookup(NamingContext.java:781)
at org.apache.naming.NamingContext.lookup(NamingContext.java:153)
at org.apache.catalina.core.NamingContextListener.addResource(NamingContextListener.java:1024)
at org.apache.catalina.core.NamingContextListener.createNamingContext(NamingContextListener.ja va:633)
at org.apache.catalina.core.NamingContextListener.lifecycleEvent(NamingContextListener.java:23 7)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4339)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:848)
at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:724)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:493)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1211)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:314)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:741)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:516)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:587)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:290)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:415)
org.apache.catalina.core.NamingContextListener addResource
WARNING: Failed to register in JMX: javax.naming.NamingException
org.apache.catalina.core.StandardContext listenerStart
My server.xml has the following
<GlobalNamingResources>
<Resource auth="Container" description="User database that can be updated and saved" factory="org.apache.catalina.users.MemoryUserDatabaseFactory" name="UserDatabase" pathname="conf/tomcat-users.xml" type="org.apache.catalina.UserDatabase"/>
<Resource auth="Container" driverClassName="com.ibm.db2.jcc.DB2Driver" name="jdbc/temp" password="XXXX" type="javax.sql.DataSource" url="jdbc:db2://localhost:50007/temp" username="XXXX"/>
</GlobalNamingResources>
And web.xml has
<resource-ref>
<description>
</description>
<res-ref-name>jdbc/temp</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
Look at this page:
http://numberformat.wordpress.com/2009/09/07/db2-datasource-configuration-in-tomcat-6/