在JBoss下发布EJB3.0实现增删改查

persistence.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0"
xmlns:persistence="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 persistence_1_0.xsd ">

<persistence-unit name="genlot" transaction-type="JTA">
	<jta-data-source>java:GenlotDS</jta-data-source>
	<properties>
	   <property name="hibernate.show_sql" value="true"></property>
	   <property name="hibernate.format_sql" value="true"></property>
	</properties>
</persistence-unit>
</persistence>
jndi.properties文件
java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory
java.naming.provider.url=jnp://localhost:1099
java.naming.factory.url.pkgs=org.jnp.interfaces

实体Bean

package com.genlot.loms.ejb3.entity;

import java.util.Date;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;

@Entity
@Table(name = "ss_user")
public class User implements java.io.Serializable{
	
	private static final long serialVersionUID = -8692000975878306489L;

	private Integer id;
	
	private String name;
	private String password;
	private String sex;
	private Date birthday;
	private String address;
	
	@Id
	@GeneratedValue(strategy = GenerationType.IDENTITY)
	@Column(name = "id", nullable = false, length = 20)
	public Integer getId() {
		return id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	
	@Column(name = "name", nullable = false, length = 19)
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	@Column(name = "password", nullable = false, length = 19)
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	@Column(name = "sex", nullable = false, length = 19)
	public String getSex() {
		return sex;
	}
	public void setSex(String sex) {
		this.sex = sex;
	}
	@Column(name="birthday" )
	public Date getBirthday() {
		return birthday;
	}
	public void setBirthday(Date birthday) {
		this.birthday = birthday;
	}
	@Column(name = "address", nullable = false, length = 19)
	public String getAddress() {
		return address;
	}
	public void setAddress(String address) {
		this.address = address;
	}
}

package com.genlot.loms.ejb3.bussiness;

import java.util.List;

import com.genlot.loms.ejb3.entity.User;

public interface UserBussiness {
	public void save (User user);
	
	public void update (User user);
	
	public void delete (Integer userId);
	
	public User getUser(Integer userId);
	
	public List<User> findUserAll();
}


package com.genlot.loms.ejb3.bussiness.impl;

import java.util.List;

import javax.ejb.Remote;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;

import com.genlot.loms.ejb3.bussiness.UserBussiness;
import com.genlot.loms.ejb3.entity.User;

@Stateless
@Remote(UserBussiness.class)
public class UserBussinessImpl implements UserBussiness {
	
	@PersistenceContext(unitName="genlot") EntityManager em;

	public void save(User user) {
		em.persist(user);
	}

	public void update(User user) {
		em.merge(user);
	}

	public void delete(Integer userId) {
		em.remove(em.getReference(User.class, userId));
	}

	public User getUser(Integer userId) {
		return em.find(User.class, userId);
	}

	@SuppressWarnings("unchecked")
	public List<User> findUserAll() {
		return em.createQuery(" from User where 1 = 1").getResultList();
	}

}