Galera estou com um problema em crud jsf que estou fazendo, não estou conseguindo recuperar o EntityManager, retor na sempre null.
Não sei o que acontece, ou se está faltando alguma coisa. Alguém pode ajudar?
private EntityManager getEntityManager(){
FacesContext fc = FacesContext.getCurrentInstance();
ExternalContext ec = fc.getExternalContext();
HttpServletRequest request = (HttpServletRequest) ec.getRequest();
EntityManager manager = (EntityManager) request.getAttribute("EntityManager");
return manager;
}package br.com.scace.managedbeans;
import java.util.List;
import javax.faces.bean.ManagedBean;
import javax.faces.context.ExternalContext;
import javax.faces.context.FacesContext;
import javax.persistence.EntityManager;
import javax.servlet.http.HttpServletRequest;
import br.com.scace.model.User;
import br.com.scace.model.UserRepository;
@ManagedBean
public class UserBean {
private User user = new User();
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
public void adicionaUser(){
EntityManager manager = this.getEntityManager();
UserRepository repository = new UserRepository(manager);
repository.adiciona(this.user);
this.user = new User();
}
public List<User> getUsers(){
EntityManager manager = this.getEntityManager();
UserRepository repository = new UserRepository(manager);
return repository.buscaTodos();
}
private EntityManager getEntityManager(){
FacesContext fc = FacesContext.getCurrentInstance();
ExternalContext ec = fc.getExternalContext();
HttpServletRequest request = (HttpServletRequest) ec.getRequest();
EntityManager manager = (EntityManager) request.getAttribute("EntityManager");
return manager;
}
}package br.com.scace.model;
import java.util.List;
import javax.faces.bean.ManagedProperty;
import javax.persistence.EntityManager;
import javax.persistence.Query;
public class UserRepository {
//@ManagedProperty(value="#{manager}")
private EntityManager manager;
public UserRepository(EntityManager manager){
this.manager = manager;
}
public void adiciona(User user){
this.manager.persist(user);
}
public List<User> buscaTodos(){
Query query = this.manager.createQuery("select x from user x");
return query.getResultList();
}
}package br.com.scace.model;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
@Entity
public class User {
@Id @GeneratedValue
private Long id;
private String nome;
private String usuario;
private String pass;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getNome() {
return nome;
}
public void setNome(String nome) {
this.nome = nome;
}
public String getUsuario() {
return usuario;
}
public void setUsuario(String usuario) {
this.usuario = usuario;
}
public String getPass() {
return pass;
}
public void setPass(String pass) {
this.pass = pass;
}
}package br.com.scace.filters;
import java.io.IOException;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
@WebFilter(servletNames={"Faces Servlet"})
public class JPAFilter implements Filter {
private EntityManagerFactory factory;
@Override
public void init(FilterConfig filterConfig) throws ServletException {
this.factory = Persistence.createEntityManagerFactory("SCACE");
}
@Override
public void destroy() {
this.factory.close();
}
@Override
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
EntityManager manager = this.factory.createEntityManager();
request.setAttribute("EntityManager", manager);
manager.getTransaction().begin();
chain.doFilter(request, response);
try {
manager.getTransaction().commit();
} catch(Exception e) {
manager.getTransaction().rollback();
} finally {
manager.close();
}
}
}<?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="SCACE" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<properties >
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5InnoDBDialect"/>
<property name="hibernate.hbm2ddl.auto" value="update"/>
<property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver"/>
<property name="javax.persistence.jdbc.user" value="root"/>
<property name="javax.persistence.jdbc.password" value=""/>
<property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/scace"/>
</properties>
</persistence-unit>
</persistence>
