I am creating a web application for WildFly, which will connect to a MySQL database through JPA (Hibernate). For now, I am just trying to get WildFly to start up and load the MySQL driver in standalone mode. I am using this page as a guide: http://wildfly.org/news/2014/02/06/GlassFish-to-WildFly-migration/
I am running WildFly and MySQL locally on a Windows system:
Attempts to use the recommended console commands did not succeed, so I have manually edited to WildFly configuration files to look like those in the examples on the page linked above. First, I created the module directory and placed in it the MySQL connector JAR and module.xml file:
Directory of C:\wildfly-9.0.0.Final\modules\system\layers\base\com\mysql\main 07/06/2015 09:54 AM <DIR> . 07/06/2015 09:54 AM <DIR> .. 07/06/2015 10:12 AM 334 module.xml 07/01/2015 02:38 PM 968,668 mysql-connector-java-5.1.35.jar
The above connector jar was copied from my local Maven repository, which Maven obtained through the following dependency:
<dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.35</version> </dependency>
The module.xml file was manually edited as follows, to resemble the example I found on wildfly.org:
<?xml version="1.0" encoding="UTF-8"?> <module xmlns="urn:jboss:module:1.1" name="com.mysql"> <resources> <resource-root path="mysql-connector-java-5.1.35-bin.jar"/> </resources> <dependencies> <module name="javax.api"/> <module name="javax.transaction.api"/> </dependencies> </module>
Finally, I added the driver and datasource to the datasources section of standalone.xml:
<datasource jndi-name="java:/MySQLDS" pool-name="MyDS" enabled="true" use-java-context="true"> <connection-url>jdbc:mysql://localhost:3306/mydb</connection-url> <driver>mysql</driver> <security> <user-name>root</user-name> <password>secret</password> </security> </datasource> <drivers> <driver name="h2" module="com.h2database.h2"> <xa-datasource-class>org.h2.jdbcx.JdbcDataSource</xa-datasource-class> </driver> <driver name="mysql" module="com.mysql"> <driver-class>com.mysql.jdbc.Driver</driver-class> </driver> </drivers>
Upon starting WildFly in standalone mode, by running %WILDFLY_HOME%\bin\standalone.bat, the following is the first error listed in %WILDFLY_HOME%\standalone\logs\server.log:
2015-07-06 10:25:47,321 ERROR [org.jboss.as.controller.management-operation] (ServerService Thread Pool -- 33) WFLYCTL0013: Operation ("add") failed - address: ([ ("subsystem" => "datasources"), ("jdbc-driver" => "mysql") ]) - failure description: "WFLYJCA0041: Failed to load module for driver [com.mysql]"
Similar issues that I have seen posted on Stack Overflow and other question/answer sites usually point to an oversight such as a typo in config files or a misnamed file. However, I've been over this over and over and cannot see any such mistake, and the same error has occurred even after upgrading from Java SE 7 and WildFly 8.2 and re-creating the configuration files from scratch. Any assistance would be greatly appreciated.
In my case it was a matter of having the wrong user:group for the directories and files under ../com/mysql/main
I changed it to wildlfy and everything worked as expected.
There was a typo in module.xml. The name of the connector JAR listed in module.xml did not match the actual JAR file in modules\system\layers\base\com\mysql\main.
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