一 ?EJB服務端

1 整體結構

2 代碼

PersonManager.java

public interface PersonManager {public void addPerson(String name); }
PersonManagerBean.java

import javax.ejb.Remote; import javax.ejb.Stateless; import javax.persistence.EntityManager; import javax.persistence.PersistenceContext;@Stateless @Remote public class PersonManagerBean implements PersonManager {@PersistenceContext(unitName = "test") // 注意 與 persistence.xml中persistence-unit的name相同private EntityManager em;public void addPerson(String name) {Person p = new Person();p.setId(10);p.setName("張三"); em.persist(p);}}

Person.java實體

@Entity 表示為一個實體

@Table表示該實體映射到數據庫中表的名字

@Id主鍵

@Transient 數據庫忽略該屬性

import java.io.Serializable;import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.Id; import javax.persistence.Table; import javax.persistence.Transient;@Entity @Table(name="t_person") public class Person implements Serializable{private static final long serialVersionUID = -6384496304647032095L;@Idprivate int id;@Transientprivate String address;private String name;public int getId() {return id;}public void setId(int id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}}

persistence.xml

<?xml version="1.0" encoding="UTF-8"?> <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/persistencehttp://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" version="1.0"><persistence-unit name="test" transaction-type="JTA"><jta-data-source>java:/MySqlDS</jta-data-source><properties><property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5Dialect" /><property name="hibernate.hbm2ddl.auto" value="update"/></properties></persistence-unit></persistence>
二 客戶端

1 整體結構

2 代碼

jndi.properties 文件,?client 文件夾,ejbServer文件夾 參考前面博客

EjbClient.java

import javax.naming.InitialContext; import javax.naming.NamingException;import ebj.learning.PersonManager;public class EjbClient {public static void main(String[] args) throws NamingException {InitialContext context = new InitialContext();PersonManager ejb = (PersonManager)context.lookup("PersonManagerBean/remote");ejb.addPerson("張三");}}
運行main方法進行測試

三 結果

總結

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