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{@Overridepublic 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{@Overridepublic Session getSession() {// TODO Auto-generated method stubreturn 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

转载于:https://www.cnblogs.com/zx-n/p/5277984.html

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