EntityManager jest nullem, dlaczego? : <

/*@PersistenceContext
	private EntityManager em;*/
	
	 private EntityManager entityManager;

	@PersistenceContext
	public void setEntityManager(EntityManager entityManager) {
	        this. entityManager = entityManager;
	    }
	    
	@Path("/create")
	//@Override
	@POST
	@Consumes(MediaType.APPLICATION_JSON)
	public void create(Campaign campaign) {
		Logger log = Logger.getLogger(CampaignDAO.class);
		if(entityManager == null) log.error("NULL EM LELELELELLE");
		//if(campaign==null) log.error("NULL CAMPAIGN ");
		entityManager.persist(campaign);	
	}

<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="megazord">
		<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
		<properties>
			<property name="hibernate.connection.driver_class" value="org.postgresql.Driver" />
			<property name="hibernate.connection.url" value="jdbc:postgresql://127.0.0.1:5432/database" />
			<property name="hibernate.connection.username" value="user" />
			<property name="hibernate.connection.password" value="password" />
			<property name="hibernate.hbm2ddl.auto" value="update" />
			<property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQL82Dialect" />
			<property name="hibernate.id.new_generator_mappings" value="true" />
		</properties>
	</persistence-unit>
</persistence>

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
	<display-name>Aplikacja internetowa</display-name>

	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>/WEB-INF/applicationContext*.xml</param-value>
	</context-param>

	<listener>
		<listener-class>
			org.springframework.web.context.ContextLoaderListener
		</listener-class>
	</listener>
	
	<servlet>
        <servlet-name>jersey</servlet-name>
        <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
		<init-param>
			<param-name>jersey.config.server.provider.packages</param-name>
			<param-value>pl.peksa;org.codehaus.jackson.jaxrs</param-value>
		</init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>jersey</servlet-name>
        <url-pattern>/rest/*</url-pattern>
    </servlet-mapping>
</web-app>

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:tx="http://www.springframework.org/schema/tx"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-3.0.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">

    <context:property-placeholder location="classpath*:database.properties" />

<!-- Database configuration -->

<bean
	class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor">
</bean>
<bean id="campaignDAO" class="pl.peksa.byleco.CampaignDAO"/>
<bean id="dataSource"
	class="org.springframework.jdbc.datasource.DriverManagerDataSource">
	<property name="driverClassName" value="org.postgresql.Driver" />
	<property name="url" value="${db.url}" />
	<property name="username" value="${db.username}" />
	<property name="password" value="${db.password}" />
</bean>

<bean id="entityManagerFactory"
	class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean">
	<property name="persistenceUnitName" value="megazord" />
</bean>

<bean id="txManager" class="org.springframework.orm.jpa.JpaTransactionManager">
	<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>

<tx:annotation-driven transaction-manager="txManager" />
</beans>