Hibernate 登陆实例的基本操作

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Hibernate 登陆实例的基本操作
MySessionFactory.java
public class MySessionFactory {
    private static Session session;
    private static Configuration config = new Configuration();
    private static SessionFactory sessionFactory;
    
    public static Session getSession() throws HibernateException{
        if(session==null || !session.isOpen()){
            if (sessionFactory == null){
                rebuildSessionFactory();
            }
            session=sessionFactory.openSession();
        }
        return session;
    }
    
    private static void rebuildSessionFactory() {
        try {
            config.configure();
            sessionFactory = config.buildSessionFactory();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    
}
MyPlugIn.java
import javax.servlet.ServletException;
import org.apache.struts.action.ActionServlet;
import org.apache.struts.action.PlugIn;
import org.apache.struts.config.ModuleConfig;
public class MyPlugIn implements PlugIn {
    public void destroy() {
        // TODO 自动生成方法存根 
    }
    public void init(ActionServlet servlet, ModuleConfig conf)
            throws ServletException {
        // TODO 自动生成方法存根 
        
        servlet.getServletContext().setAttribute("DBSession", 
MySessionFactory.getSession());
    }
}
在Struts-config中配置
<plug-in className="my.MyPlugIn"></plug-in>
UserOpertor.java:
import java.util.List;
import org.hibernate.Query;
import org.hibernate.Session;
public class UserOpertor {
    
    private Session se=null;
    
    public UserOpertor(){
//      Configuration config=new Configuration().configure(); 
//      SessionFactory sf=config.buildSessionFactory(); 
//      se= sf.openSession(); 
    }
    
    public UserOpertor(Object sessionObj){
        se=(Session)sessionObj;     
    }
    
    
    
    public List getAllUser(){
        Query query= se.createQuery("from User");
        List rtn=query.list();
        return rtn;
    }
    
    public void addUser(User user){
        se.save(user);
        se.beginTransaction().commit();
    }
    
    public void updUser(User user){
        se.update(user);
        se.beginTransaction().commit();
    }
    
    public void delUser(User user){
        se.delete(user);
        se.beginTransaction().commit();
    }
    
}
Action:
public class LoginAction extends Action {
    public ActionForward execute(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response) {
        //1: 
        LoginForm loginForm = (LoginForm) form;
        Object obj= this.servlet.getServletContext().getAttribute("DBSession");
        boolean flag=false;
        //2: 
        UserOpertor op=new UserOpertor(obj);
        ArrayList users=(ArrayList)op.getAllUser();
        for(int i=0;i<users.size();i++){
            User temp=(User) users.get(i);
            if(temp.getUid().equals(loginForm.getUid())&&temp.getPwd().equals
(loginForm.getPwd())){
                flag=true;
                break;
            }           
        }
        //3: 
        if(flag){
            return mapping.findForward("aaa");
        }else{
            return mapping.findForward("bbb");
        }
    }
}
user.java
public class User {
    private String uid;
    private String uname;
    private String pwd;
    public String getPwd() {
        return pwd;
    }
    public void setPwd(String pwd) {
        this.pwd = pwd;
    }
    public String getUid() {
        return uid;
    }
    public void setUid(String uid) {
        this.uid = uid;
    }
    public String getUname() {
        return uname;
    }
    public void setUname(String uname) {
        this.uname = uname;
    }
    
}
modle.xml:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
    <class  name="my.User"  table="UsersInfo" >
        <id name="uid" column="uid" type="string" >
            <generator class="assigned"></generator>
        </id>
        <property name="uname" column="uname" type="string" />
        <property name="pwd" column="pwd" type="string" />
    </class>
</hibernate-mapping>
hibernate.cfg.xml:
<?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">sa</property>
    <property name="connection.url">jdbc:odbc:Test</property>
    <property name="dialect">
        org.hibernate.dialect.SQLServerDialect
    </property>
    <property name="connection.password">111</property>
    <property name="connection.driver_class">
        sun.jdbc.odbc.JdbcOdbcDriver
    </property>
    <property name="show_sql">true</property>
    <mapping resource="model.xml" />
</session-factory>
</hibernate-configuration>