Can't get glassfish to connect to mysql - mysql

Question

SEVERE: Local Exception Stack: Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DatabaseExceptionInternal Exception: java.sql.SQLException: Error in allocating a connection. Cause: Connection could not be allocated because: java.net.ConnectException : Error connecting to server localhost on port 1527 with message Connection refused.Error Code: 0
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0" 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">
<persistence-unit name="HelloWorld">
<class>model.HelloWorld</class>
<properties>
<property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver" />
<property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/database" />
<property name="javax.persistence.jdbc.user" value="root" />
<property name="javax.persistence.jdbc.password" value="password" />
</properties>
</persistence-unit>
</persistence>
I have the connector install on glassfish, with successful pings I just can't the servlet and entitymanager to get the query to the mysql server. Any help would be good, also tutorials as well.

Answer 1

If you are using a Glassfish-initiated JDBC connection (I think you are since you say you sucessfully pinged the datasource), then you don't want to define the properties as you have them in the persistence.xml. You'll want to just specify a data-source by JNDI name.
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0" 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">
<persistence-unit name="HelloWorld">
<non-jta-data-source>jdbc/myds</non-jta-data-source>
<class>model.HelloWorld</class>
<properties>
</properties>
</persistence-unit>
</persistence>