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POSpring JPA and persistence.xml
 

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    <p>I'm trying to set up a Spring JPA Hibernate simple example WAR for deployment to Glassfish. I see some examples use a persistence.xml file, and other examples do not. Some examples use a dataSource, and some do not. So far my understanding is that a dataSource is not needed if I have:</p> <pre><code>&lt;persistence-unit name="educationPU" transaction-type="JTA"&gt; &lt;provider&gt;org.hibernate.ejb.HibernatePersistence&lt;/provider&gt; &lt;class&gt;com.coe.jpa.StudentProfile&lt;/class&gt; &lt;properties&gt; &lt;property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver" /&gt; &lt;property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/COE" /&gt; &lt;property name="hibernate.connection.username" value="root" /&gt; &lt;property name="show_sql" value="true" /&gt; &lt;property name="dialect" value="org.hibernate.dialect.MySQLDialect" /&gt; &lt;/properties&gt; &lt;/persistence-unit&gt; </code></pre> <p>I can deploy fine, but my EntityManager is not getting injected by Spring.</p> <p>My applicationContext.xml:</p> <pre><code>&lt;bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean"&gt; &lt;property name="persistenceUnitName" value="educationPU" /&gt; &lt;/bean&gt; &lt;bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager"&gt; &lt;property name="entityManagerFactory" ref="entityManagerFactory" /&gt; &lt;/bean&gt; &lt;bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" /&gt; &lt;tx:annotation-driven transaction-manager="transactionManager" /&gt; &lt;bean id="StudentProfileDAO" class="com.coe.jpa.StudentProfileDAO"&gt; &lt;property name="entityManagerFactory" ref="entityManagerFactory" /&gt; &lt;/bean&gt; &lt;bean id="studentService" class="com.coe.services.StudentService"&gt; &lt;/bean&gt; </code></pre> <p>My class with the EntityManager:</p> <pre><code>public class StudentService { private String saveMessage; private String showModal; private String modalHeader; private StudentProfile studentProfile; private String lastName; private String firstName; @PersistenceContext(unitName="educationPU") private EntityManager em; @Transactional public String save() { System.out.println("*** em: " + this.em); //em is null this.studentProfile= new StudentProfile(); this.saveMessage = "saved"; this.showModal = "true"; this.modalHeader= "Information Saved"; return "successs"; } </code></pre> <p>My web.xml:</p> <pre><code> &lt;listener&gt; &lt;listener-class&gt;org.springframework.web.context.ContextLoaderListener&lt;/listener-class&gt; </code></pre> <p></p> <p>Are there any pieces I am missing to have Spring inject "em" in to StudentService?</p>
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