这些天我正在经历休眠，然后我试图开发一个集成struts2 + Hibernate + Spring的应用程序..我有两种方法来初始化hibernate会话工厂..一种是我们当时为struts2加载过滤器调度程序，我们应该加载休眠会话工厂，例如如下所示..
网页.xml...
<web-app version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<filter>
<filter-name>controller</filter-name>
<filter-class>mypack.Struts2Dispatcher</filter-class>
</filter>
<filter-mapping>
<filter-name>controller</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping></web-app>
Struts2Dispatcher 文件..
import javax.servlet.*;
import org.apache.struts2.dispatcher.FilterDispatcher;
import org.hibernate.HibernateException;
public class Struts2Dispatcher extends FilterDispatcher
{
@Override
public void init(FilterConfig filterConfig) throws ServletException
{
super.init(filterConfig);
try
{
HibernateUtil.createSessionFactory();
System.out.print("-------application initializing successfully-----");
}
catch (HibernateException e)
{
throw new ServletException(e);
}
}
}
和休眠实用程序..
package mypack;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import org.hibernate.Session;
public class HibernateUtil
{
private static SessionFactory sessionFactory;
public static void createSessionFactory()
{
sessionFactory = new Configuration().configure().buildSessionFactory();
}
public static Session getSession()
{
return sessionFactory.openSession();
}
}
配置文件..
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<!-- Generated by MyEclipse Hibernate Tools. -->
<hibernate-configuration>
<session-factory>
<property name="connection.username">system</property>
<property name="connection.url">jdbc:oracle:thin:@localhost:1521:xe</property>
<property name="hibernate.dialect">org.hibernate.dialect.Oracle9Dialect</property>
<property name="connection.password">manager</property>
<property name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
<property name="show_sql">true</property>
<mapping resource="Employee.hbm.xml"/>
</session-factory>
</hibernate-configuration>
映射文件..
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="mypack.Employee">
<id name="eid" column="emp_id" type="int">
<generator class="increment"/></id>
<property name="name" column="emp_name"/>
<property name="job"/>
<property name="salary" type="int"/>
</class>
</hibernate-mapping>
应用程序 context.xml 文件
<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">
<bean id="MyIOCObject" class="mypack.LoginAction"/>
</beans>
struts.xml 文件..
<struts>
<package name="pack" extends="struts-default">
<action name="login" class="MyIOCObject" method="insert">
<result name="success">/welcome.jsp</result>
<result name="failure">/relogin.jsp</result>
</action>
</package>
</struts>
登录Action java类
package mypack;
import org.hibernate.*;
import org.hibernate.cfg.Configuration;
public class LoginAction
{
private String name,job;
private int salary;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String insert()
{
try
{
Session ses=HibernateUtil.getSession();
Employee emp=new Employee(name,job,salary);
Transaction tx=ses.beginTransaction();
ses.save(emp);
tx.commit();
ses.close();
return "success";
}catch(Exception e)
{
System.out.println(e);
return "failure";
}
}
public String getJob() {
return job;
}
public void setJob(String job) {
this.job = job;
}
public int getSalary() {
return salary;
}
public void setSalary(int salary) {
this.salary = salary;
}
}
主要员工 pojo
package mypack;
public class Employee
{
private int eid,salary;
private String name,job;
public Employee()
{
super();
}
public Employee(String name, String job,int salary)
{
super();
this.salary = salary;
this.name = name;
this.job = job;
}
public int getEid() {
return eid;
}
public void setEid(int eid) {
this.eid = eid;
}
public int getSalary() {
return salary;
}
public void setSalary(int salary) {
this.salary = salary;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getJob() {
return job;
}
public void setJob(String job) {
this.job = job;
}
}
主要测试程序..
package mypack;
import java.util.Scanner;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import org.hibernate.classic.Session;
public class TestProgram
{
public static void main(String[] args)
{
try
{
Configuration cfg=new Configuration();
cfg.configure();
SessionFactory sesfac=cfg.buildSessionFactory();
Session ses=sesfac.openSession();
System.out.println("Session created , fetching objects...");
Scanner in=new Scanner(System.in);
System.out.println("Enter Employee id :- ");
int id=in.nextInt();
Employee e=(Employee)ses.load(Employee.class,id);
System.out.println("Following Object is fetched");
System.out.println(e.getEid()+"\t"+e.getName()+"\t"+e.getSalary()+"\t"+e.getJob());
ses.close();
}catch (Exception e)
{
System.out.println(e);
}
}
}
我正在讨论的另一种方法是在链接上另一种集成方法现在请告诉我哪种方法最好，还有比这两种方法更好的方法吗？
请发布更新的代码，以便我可以掌握这个概念，请指教..!!