strust2 和 hibernate的整合------登录的实现

初步认识了struts2，并与hibernate进行整合，完成了一个登录的案例，下面贴源码

 

1.实体类User

public class User {

private Integer id;
private String uname;
private String upass;

...省略set和get方法

}

 

2.实体类的映射文件

 1 <class name="www.change.tm.bean.User" table="USERS">
 2         <id name="id" type="java.lang.Integer">
 3             <column name="ID" />
 4             <generator class="native" />
 5         </id>
 6         <property name="uname" type="java.lang.String">
 7             <column name="UNAME" />
 8         </property>
 9         <property name="upass" type="java.lang.String">
10             <column name="UPASS" />
11         </property>
12     </class>

3.hibernate.cfg.xml

 1 <session-factory>
 2                 <!-- 配置hibernate的基本信息 -->
 3          <property name="connection.username">****</property>
 4          <property name="connection.password">****</property>
 5          <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
 6          <property name="connection.url">jdbc:mysql:///hibernate3</property>
 7          
 8          <!-- hibernate的基本配置 -->
 9          <!-- 数据库方言 -->
10          <property name="dialect">org.hibernate.dialect.MySQLDialect</property>
11     
12          <!-- 是否打印sql -->
13          <property name="show_sql">true</property>
14          <!-- 是否格式化sql -->
15          <property name="format_sql">true</property>
16          <!-- 生成表的策略 -->
17          <property name="hbm2ddl.auto">update</property>
18          
19           <mapping resource="www/change/tm/bean/User.hbm.xml"/>
20           
21     </session-factory>

4.action类

package www.change.tm.action;

import java.util.Map;

import org.apache.struts2.ServletActionContext;

import www.change.tm.bean.User;
import www.change.tm.dao.UserDao;
import www.change.tm.dao.UserDaoImpl;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;




public class Login extends ActionSupport{


    //声明dao对象
    UserDao userdao = new UserDaoImpl();
    
    private String uname;
    private String upass;
    
    
    public String login(){
        
        User user = userdao.login(uname, upass);
        
        
        
        
        if (user != null ) {
            // 存入到session会话中
            ServletActionContext.getRequest().getSession()
                    .setAttribute("user", user);
            
                
                return SUCCESS;
                
            
            
        } else {
            ServletActionContext.getRequest().setAttribute("msg", "用户名或者密码");
            return ERROR;
        }
    }
    
    
    public void setUname(String uname) {
        this.uname = uname;
    }




    public void setUpass(String upass) {
        this.upass = upass;
    }

    
    
    
        
        
        
}

5.dao层

5.1 BaseDao

public interface BaseDao {

　　public Session getSession();

} 

5.2   UserDao

 

public interface UserDao {

    
    /*
     * 登录验证处理
     */
    
    public User login(String uname,String upass);
}

5.3  UserDaoImpl

public class UserDaoImpl extends BaseDaoImpl implements UserDao{

    @Override
    public User login(String uname, String upass) {
        //1.获取session对象
        Session session = getSession();
        
        //2.执行查询 
        Query createQuery = session.createQuery("from User u where u.uname=? and u.upass=?");
        User user = (User)createQuery.setString(0, uname).setString(1, upass).uniqueResult();
        
        /*总的写
        User user =(User) getSession().createQuery("").setString(0, uname).setString(1, upass).uniqueResult();
        */
        
        
        //3.session关闭
        HiberSessionFactory.closeSession();
        
        return user;
    }

}

5.4 BaseDaoImpl

public class BaseDaoImpl implements BaseDao{

    @Override
    public Session getSession() {
        // TODO Auto-generated method stub
        return HibernateControl.getSession();
    }

    

    
}

6.util包里

引入HiberSessionFactory.java文件

  1 package www.change.tm.util;
  2 
  3 import org.hibernate.HibernateException;
  4 import org.hibernate.Session;
  5 import org.hibernate.cfg.Configuration;
  6 import org.hibernate.service.ServiceRegistry;
  7 import org.hibernate.service.ServiceRegistryBuilder;
  8 
  9 /**
 10  * Configures and provides access to Hibernate sessions, tied to the
 11  * current thread of execution.  Follows the Thread Local Session
 12  * pattern, see {@link http://hibernate.org/42.html }.
 13  */
 14 public class HiberSessionFactory {
 15 
 16     /** 
 17      * Location of hibernate.cfg.xml file.
 18      * Location should be on the classpath as Hibernate uses  
 19      * #resourceAsStream style lookup for its configuration file. 
 20      * The default classpath location of the hibernate config file is 
 21      * in the default package. Use #setConfigFile() to update 
 22      * the location of the configuration file for the current session.   
 23      */
 24     private static final ThreadLocal<Session> threadLocal = new ThreadLocal<Session>();
 25     private static org.hibernate.SessionFactory sessionFactory;
 26     
 27     private static Configuration configuration = new Configuration();
 28     private static ServiceRegistry serviceRegistry; 
 29 
 30     static {
 31         try {
 32             System.out.println("@@@@@@@@@@@@@@@@@@@@@@@@@@@");
 33             configuration.configure();
 34             System.out.println("configuration="+configuration);
 35             serviceRegistry = new ServiceRegistryBuilder().applySettings(configuration.getProperties()).buildServiceRegistry();
 36             System.out.println("serviceRegistry="+serviceRegistry);
 37             sessionFactory = configuration.buildSessionFactory(serviceRegistry);
 38             System.out.println();
 39         } catch (Exception e) {
 40             System.err.println("%%%% Error Creating SessionFactory %%%%");
 41             e.printStackTrace();
 42         }
 43     }
 44     private HiberSessionFactory() {
 45     }
 46     
 47     /**
 48      * Returns the ThreadLocal Session instance.  Lazy initialize
 49      * the <code>SessionFactory</code> if needed.
 50      *
 51      *  @return Session
 52      *  @throws HibernateException
 53      */
 54     public static Session getSession() throws HibernateException {
 55         Session session = (Session) threadLocal.get();
 56 
 57         if (session == null || !session.isOpen()) {
 58             if (sessionFactory == null) {
 59                 rebuildSessionFactory();
 60             }
 61             session = (sessionFactory != null) ? sessionFactory.openSession()
 62                     : null;
 63             threadLocal.set(session);
 64         }
 65 
 66         return session;
 67     }
 68 
 69     /**
 70      *  Rebuild hibernate session factory
 71      *
 72      */
 73     public static void rebuildSessionFactory() {
 74         try {
 75             configuration.configure();
 76             serviceRegistry = new ServiceRegistryBuilder().applySettings(configuration.getProperties()).buildServiceRegistry();
 77             sessionFactory = configuration.buildSessionFactory(serviceRegistry);
 78         } catch (Exception e) {
 79             System.err.println("%%%% Error Creating SessionFactory %%%%");
 80             e.printStackTrace();
 81         }
 82     }
 83 
 84     /**
 85      *  Close the single hibernate session instance.
 86      *
 87      *  @throws HibernateException
 88      */
 89     public static void closeSession() throws HibernateException {
 90         Session session = (Session) threadLocal.get();
 91         threadLocal.set(null);
 92 
 93         if (session != null) {
 94             session.close();
 95         }
 96     }
 97 
 98     /**
 99      *  return session factory
100      *
101      */
102     public static org.hibernate.SessionFactory getSessionFactory() {
103         return sessionFactory;
104     }
105     /**
106      *  return hibernate configuration
107      *
108      */
109     public static Configuration getConfiguration() {
110         return configuration;
111     }
112 
113 }

 7.数据库