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POEntityManager is null. Using Seam and JBOSS
 

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  1. POEntityManager is null. Using Seam and JBOSS
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    <p>I am making a web application using JBOSS and Seam but I am trying to use entityManager in one of my classes but it is null. I have it connected to an outside database and printed out the entityManager in the class and it just said null. when i try to open the webpage that uses the class I get a null pointer exception and the webpage says could not instantiate Seam component. I've spent hours on the internet trying to figure out what's wrong but i have been unsuccessful. Any help would be appreciated. Here is the code for the class:</p> <pre><code>package edu.uwrf.iss.flowershop.session; import java.util.ArrayList; import java.util.List; import javax.ejb.Remove; import javax.ejb.Stateful; import javax.persistence.EntityManager; import javax.persistence.Query; import org.jboss.aop.util.logging.SystemOutLoggerPlugin; import org.jboss.seam.ScopeType; import org.jboss.seam.annotations.Destroy; import org.jboss.seam.annotations.In; import org.jboss.seam.annotations.Name; import org.jboss.seam.annotations.Scope; import edu.uwrf.iss.flowershop.entity.FlowerStoreEmployee; @Stateful @Scope(ScopeType.SESSION) @Name("employeePort") public class EmployeeBean implements EmployeePortal { //These are the variables to store the employee information String empID; String first; String last; String ssn; String phone; String pay; String vehicle; String house; String street; String city; String state; String zip; @In (create=true) private EntityManager entityManager; //this is the employee list List&lt;FlowerStoreEmployee&gt; employeeList; //Constructor public EmployeeBean(){ employeeList = new ArrayList&lt;FlowerStoreEmployee&gt;(); loadEmployeeList(); } @SuppressWarnings("unchecked") public void loadEmployeeList(){ employeeList = new ArrayList&lt;FlowerStoreEmployee&gt;(); entityManager.isOpen(); Query query = entityManager.createQuery("SELECT e FROM FlowerStoreVehicle e"); employeeList.addAll((List&lt;FlowerStoreEmployee&gt;)query.getResultList()); } //Getters and Setters public List&lt;FlowerStoreEmployee&gt; getEmployeeList() { return employeeList; } public void setEmployeeList(List&lt;FlowerStoreEmployee&gt; employeeList) { this.employeeList = employeeList; } //used by the add button on the addEmp.xhtml page public String addEmployee(){ int id = Integer.parseInt(empID); int soc = Integer.parseInt(ssn); int paid =Integer.parseInt(pay); int vehID = Integer.parseInt(vehicle); int houseID = Integer.parseInt(house); Integer zCode = Integer.parseInt(zip); FlowerStoreEmployee n = new FlowerStoreEmployee(); n.setNameFirst(first); n.setNameLast(last); n.setPay(pay); n.setPhone(phone); n.setSsn(ssn); employeeList.add(n); entityManager.persist(n); return "/employee.xhtml"; } //used by the remove button on the remEmp.xhtml page public String remEmployee(){ int searchID = Integer.parseInt(empID); int emp = 0; int i = 0; FlowerStoreEmployee e; while (emp!= searchID &amp;&amp; i&lt;employeeList.size()){ e = employeeList.get(i); emp = e.getEmployeeId(); } employeeList.remove(i); return "/employee.xhtml"; } //clears the variables used to temporarily store the information entered on the forms public void clearTemps(){ this.empID = null; this.first = null; this.last = null; this.ssn = null; this.phone=null; this.pay = null; this.vehicle = null; this.house = null; this.street=null; this.city=null; this.state=null; this.zip=null; } public String createEmp() { clearTemps(); System.out.println("words"); return "FlowerStore/addEmp.xhtml"; } //Setters and getters public String getEmpID() { return empID; } public void setEmpID(String empID) { this.empID = empID; } public String getFirst() { return first; } public void setFirst(String first) { this.first = first; } public String getLast() { return last; } public void setLast(String last) { this.last = last; } public String getSsn() { return ssn; } public void setSsn(String ssn) { this.ssn = ssn; } public String getPhone() { return phone; } public void setPhone(String phone) { this.phone = phone; } public String getPay() { return pay; } public void setPay(String pay) { this.pay = pay; } public String getVehicle() { return vehicle; } public void setVehicle(String vehicle) { this.vehicle = vehicle; } public String getHouse() { return house; } public void setHouse(String house) { this.house = house; } public String getStreet() { return street; } public void setStreet(String street) { this.street = street; } public String getCity() { return city; } public void setCity(String city) { this.city = city; } public String getState() { return state; } public void setState(String state) { this.state = state; } public String getZip() { return zip; } public void setZip(String zip) { this.zip = zip; } /* Seam/Hibernate methods */ @Remove public void remove() { } @Destroy public void destroy() { } } </code></pre> <p>if any additional info is needed please let me know.</p>
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