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Can't connect to MySQL in Java EE/JBoss application

created by Sz Krze in Datasource Configuration - View the full discussion

While deploying my app I'm getting the following errors (I've also included subjectively significant warnings):

03:36:42,113 WARN [org.jboss.resource.connectionmanager.JBossManagedConnectionPool] Throwable while attempting to get a new connection: null: org.jboss.resource.JBossResourceException: Could not create connection; - nested throwable: (org.jboss.resource.JBossResourceException: Failed to register driver for: com.mysql.jdbc.Driver; - nested throwable: (java.lang.ClassNotFoundException: com.mysql.jdbc.Driver from BaseClassLoader@66a8c396{vfs:///D:/MobilnyPodroznik/workspace/.metadata/.plugins/org.jboss.ide.eclipse.as.core/JBoss_6.x_Runtime_Server1345902635716/deploy/MP01.jar}))

(...)

Caused by: org.jboss.resource.JBossResourceException: Failed to register driver for: com.mysql.jdbc.Driver; - nested throwable: (java.lang.ClassNotFoundException: com.mysql.jdbc.Driver from BaseClassLoader@66a8c396{vfs:///D:/MobilnyPodroznik/workspace/.metadata/.plugins/org.jboss.ide.eclipse.as.core/JBoss_6.x_Runtime_Server1345902635716/deploy/MP01.jar})

(..)

Caused by: java.lang.ClassNotFoundException: com.mysql.jdbc.Driver from BaseClassLoader@66a8c396{vfs:///D:/MobilnyPodroznik/workspace/.metadata/.plugins/org.jboss.ide.eclipse.as.core/JBoss_6.x_Runtime_Server1345902635716/deploy/MP01.jar}

03:36:42,122 WARN [org.hibernate.cfg.SettingsFactory] Could not obtain connection to query metadata: org.jboss.util.NestedSQLException: Unable to get managed connection for MP01Local; - nested throwable: (javax.resource.ResourceException: Unable to get managed connection for MP01Local)

(...)

Caused by: javax.resource.ResourceException: Unable to get managed connection for MP01Local

(...)

Caused by: org.jboss.resource.JBossResourceException: Could not create connection; - nested throwable: (org.jboss.resource.JBossResourceException: Failed to register driver for: com.mysql.jdbc.Driver; - nested throwable: (java.lang.ClassNotFoundException: com.mysql.jdbc.Driver from BaseClassLoader@66a8c396{vfs:///D:/MobilnyPodroznik/workspace/.metadata/.plugins/org.jboss.ide.eclipse.as.core/JBoss_6.x_Runtime_Server1345902635716/deploy/MP01.jar}))

(...)

03:36:42,143 WARN [org.jboss.resource.connectionmanager.JBossManagedConnectionPool] Throwable while attempting to get a new connection: null: org.jboss.resource.JBossResourceException: Could not create connection; - nested throwable: (org.jboss.resource.JBossResourceException: Failed to register driver for: com.mysql.jdbc.Driver; - nested throwable: (java.lang.ClassNotFoundException: com.mysql.jdbc.Driver from BaseClassLoader@66a8c396{vfs:///D:/MobilnyPodroznik/workspace/.metadata/.plugins/org.jboss.ide.eclipse.as.core/JBoss_6.x_Runtime_Server1345902635716/deploy/MP01.jar}))

(...)

03:36:42,147 ERROR [org.hibernate.tool.hbm2ddl.SchemaExport] schema export unsuccessful: org.jboss.util.NestedSQLException: Unable to get managed connection for MP01Local; - nested throwable: (javax.resource.ResourceException: Unable to get managed connection for MP01Local)

(...)

Caused by: javax.resource.ResourceException: Unable to get managed connection for MP01Local

(...)

As for the whole console output: http://pastebin.com/de2Br9xL

Basically, it seems as if my JDBC driver is not visible, but I have placed the .jar both in the server's default/lib folder and in project's build path, thus I'm clueless now.

persistence.xml

<?xml version="1.0" encoding="UTF-8"?>

<persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"

version="2.0">

<persistence-unit name="mp" transaction-type="JTA">

<jta-data-source>java:/MP01Local</jta-data-source>

<!--s

-->

</properties>

</persistence-unit>

</persistence>

mysqllocal-ds.xml

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE datasources

PUBLIC "-//JBoss//DTD JBOSS JCA Config 1.5//EN"

"http://www.jboss.org/j2ee/dtd/jboss-ds_1_5.dtd">

<local-tx-datasource>

<jndi-name>MP01Local</jndi-name>

<connection-url>jdbc:mysql://localhost:3306/mp</connection-url>

<driver-class>com.mysql.jdbc.Driver</driver-class>

<user-name>mproot</user-name>

<password>mproot123</password>

</local-tx-datasource>

</datasources>

I have placed the DS XML file in default/deploy path of the JBoss server and mysql-connector-java-5.0.8-bin in default/lib, as indicated in the JBoss manual.

I'm using

- Eclipse, build 20120614-1722,

- JBoss AS 6,

- mysql-connector-java-5.0.8-bin driver.

- As for the MySQL, mysql --version prints out "mysql Ver 14.14 Distrib 5.5.25a, for Win32 (X86)".

My project build path

1. jre6

2. JBoss 6.x Runtime

3. MySQL JDBC Driver 5.0.8, including mysql-connector-java-5.0.8-bin.jar [I have created it in Data Source Explorer)

Any clues? Thanks in advance.

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