基于struts2+hibernate开发的登录模块

最新推荐文章于 2021-02-04 21:37:00 发布

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#java web #struts2.0 #hibernate

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本文介绍如何基于Struts2.0和Hibernate框架开发一个登录模块。首先创建名为testsh的Web项目，然后通过MyEclipse安装Struts2和Hibernate Facet。接着配置jsp文件如login.jsp、success.jsp和false.jsp。最后，在web.xml中进行Struts配置，并展示了TUser.java中的关键代码。

今天可以学习struts+hibernate框架的开发，有点小激动。

一、建立新的web project----testsh 。

二、搭建框架：右键项目—MyEclipse—Project Facets—install Apache Struts(2.x) Facet / install Hibernate Facet

三、和前面的项目一样，需要建立的 jsp文件：login.jsp、success.jsp、false.jsp 。

项目目录结构：

四、web.xml配置文件（配置struts，搭建框架后自动生成）：

  <welcome-file-list>
    <welcome-file>login.jsp</welcome-file>
  </welcome-file-list>
  <filter>
    <filter-name>struts2</filter-name>
    <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
  </filter>
  <filter-mapping>
    <filter-name>struts2</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

五、hibernate.cfg.xml配置文件（搭建框架后自动生成）

<session-factory>
	<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
	<property name="connection.url">jdbc:mysql://127.0.0.1:3306/test</property>
	<property name="connection.username">root</property>
	<property name="connection.password">Admin123</property>
	<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
	<property name="myeclipse.connection.profile">mybase</property>


	<mapping resource="com/ssh/TUser.hbm.xml" />

</session-factory>

六、src目ssh包下的内容（都为搭建框架后自动生成）：

TUser.java中核心代码：

package com.ssh;

public class TUser implements java.io.Serializable {

	private Integer id;
	private String mame;
	private String password;

	public TUser() {
	}

	public TUser(String mame, String password) {
		this.mame = mame;
		this.password = password;
	}

	public Integer getId() {
		return this.id;
	}

	public void setId(Integer id) {
		this.id = id;
	}

	public String getMame() {
		return this.mame;
	}

	public void setMame(String mame) {
		this.mame = mame;
	}

	public String getPassword() {
		return this.password;
	}

	public void setPassword(String password) {
		this.password = password;
	}

}

TUser.hbm.xml配置文件：

<hibernate-mapping>
    <class name="com.ssh.TUser" table="t_user" catalog="test">
        <id name="id" type="java.lang.Integer">
            <column name="id" />
            <generator class="identity" />
        </id>
        <property name="mame" type="java.lang.String">
            <column name="mame" length="20" not-null="true" />
        </property>
        <property name="password" type="java.lang.String">
            <column name="password" length="20" not-null="true" />
        </property>
    </class>
</hibernate-mapping>

HibernateSessionFactory.java中的核心代码：

package com.ssh.entity;

import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;
import org.hibernate.service.ServiceRegistryBuilder;

public class HibernateSessionFactory {

    private static final ThreadLocal<Session> threadLocal = new ThreadLocal<Session>();
    private static org.hibernate.SessionFactory sessionFactory;	
    private static Configuration configuration = new Configuration();
    private static ServiceRegistry serviceRegistry; 

    static {
    	try {
	     configuration.configure();
	     serviceRegistry = new ServiceRegistryBuilder()

			.applySettings(configuration.getProperties()).buildServiceRegistry();
	     sessionFactory = configuration.buildSessionFactory(serviceRegistry);
	} catch (Exception e) {
		System.err.println("%%%% Error Creating SessionFactory %%%%");
		e.printStackTrace();
	}
    }
    private HibernateSessionFactory() {
    }
	
    public static Session getSession() throws HibernateException {
        Session session = (Session) threadLocal.get();

		if (session == null || !session.isOpen()) {
			if (sessionFactory == null) {
				rebuildSessionFactory();
			}
			session = (sessionFactory != null) ? sessionFactory.openSession()
					: null;
			threadLocal.set(session);
		}

        return session;
    }

    public static void rebuildSessionFactory() {
	try {
		configuration.configure();
		serviceRegistry = new ServiceRegistryBuilder()

                         .applySettings(configuration.getProperties()).buildServiceRegistry();
		sessionFactory = configuration.buildSessionFactory(serviceRegistry);
	} catch (Exception e) {
		System.err.println("%%%% Error Creating SessionFactory %%%%");
		e.printStackTrace();
		}
	}

    public static void closeSession() throws HibernateException {
        Session session = (Session) threadLocal.get();
        threadLocal.set(null);

        if (session != null) {
            session.close();
        }
    }

     public static org.hibernate.SessionFactory getSessionFactory() {
		return sessionFactory;
     }

     public static Configuration getConfiguration() {
		return configuration;
     }

}

七、在src目录下，新建com.action.LoginAction.java 和 com.service.LoginService.java

核心代码：

package com.action;

import com.service.LoginService;
import com.ssh.TUser;

public class LoginAction {
	private String name;
	private String password;
	
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	
	public String  execute(){
		LoginService loginser = new LoginService();
		TUser u = loginser.login(name, password);
		if(u!=null){
			return "SUCCESS";
		}else{
			return "ERROR";
		}
	}
}

package com.service;

import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;

import com.ssh.TUser;
import com.ssh.entity.HibernateSessionFactory;

public class LoginService {
	TUser user = null;
	//HibernateSessionFactory hf = null;
	
	public TUser login(String name,String password){
		Session session = HibernateSessionFactory.getSession();
		Transaction ts = session.beginTransaction();
		String hql = "from TUser as u where u.mame=? and u.password=?";
		Query query = session.createQuery(hql);
		query.setParameter(0, name);
		query.setParameter(1, password);
		user = (TUser)query.uniqueResult();
		ts.commit();
		return user;
	}
}

八、配置struts.xml文件：

<struts>
	<package name="testsh" extends="struts-default">
		<action name="loginss" class="com.action.LoginAction">
			<result name="SUCCESS">success.jsp</result>
			<result name="ERROR">false.jsp</result>
		</action>
	</package>
</struts>

九、运行结果：