Struts2和hibernate框架整合实现简单的注册登陆功能

项目结构：

LoginAction.java

package action;
import vo.User;
import vo.UserDAO;
import com.opensymphony.xwork2.ActionSupport;

public class LoginAction extends ActionSupport {
    /**
     * 
     */
    private static final long serialVersionUID = 1L;
    private User user;
    public User getUser() {
        return user;}
    public void setUser(User user) {
        this.user = user;}
    public String execute()throws Exception{
        if((user=new UserDAO().LoginCheck(user.getUsername(), user.getPassword(),user.getRole()))==null){
            return ERROR;
        }
        if(user.getRole()=="1"){
                return "admin";
            }else{
                return SUCCESS;}    
    }
}

RegistAction.java

package action;

import vo.User;
import vo.UserDAO;

import com.opensymphony.xwork2.ActionSupport;

public class RegistAction extends ActionSupport {

    /**
     * 
     */
    private static final long serialVersionUID = 1L;
    private User user=null;
    private String repassword;
    public String getRepassword() {
        return repassword;
    }
    public void setRepassword(String repassword) {
        this.repassword = repassword;
    }
    //UserDAO userDao=new UserDAO();
    @Override
    public String execute() throws Exception {
        User selectUser=new User();
        if((selectUser=new UserDAO().selectRegist(user.getUsername()))==null){
            User u=new User();
            u.setUsername(user.getUsername());
            u.setPassword(user.getPassword());
            new UserDAO().saveRegist(u);
            return "success";
        }else{
            return "error";
        }

    }
    public User getUser() {
        return user;
    }
    public void setUser(User user) {
        this.user = user;
    }
}

LoginAction-validation.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE validators PUBLIC "-//Apache Struts//XWork Validator 1.0.2//EN" "http://struts.apache.org/dtds/xwork-validator-1.0.2.dtd">
    <validators>
        <field name="user.username">
            <field-validator type="requiredstring">
            <param name="trim">true</param>
            <message>用户名不能为空</message>
            </field-validator>
        </field>
        <field name="user.password">
        <field-validator type="regex">
            <param name="expression"><![CDATA[(\w{4,8})]]></param>
            <message>密码长度必须在4~8之间</message>
            </field-validator>
        </field>
    </validators>

RegistAction-validation.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE validators PUBLIC "-//Apache Struts//XWork Validator 1.0.2//EN" "http://struts.apache.org/dtds/xwork-validator-1.0.2.dtd">
    <validators>
        <field name="user.username">
            <field-validator type="requiredstring">
            <param name="trim">true</param>
            <message>用户名不能为空</message>
            </field-validator>
        </field>
        <field name="user.password">
        <field-validator type="regex">
            <param name="expression"><![CDATA[(\w{4,8})]]></param>
            <message>密码长度必须在4~8之间</message>
            </field-validator>
        </field>
        <field name="repassword">
        <field-validator type="fieldexpression">
            <param name="expression"><![CDATA[(repassword==user.password)]]></param>
            <message>两次输入的密码要一致!</message>
        </field-validator>
        </field>
    </validators>

HibernateSessionFactory.java

package util;

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

/**
 * Configures and provides access to Hibernate sessions, tied to the
 * current thread of execution.  Follows the Thread Local Session
 * pattern, see {@link http://hibernate.org/42.html }.
 */
public class HibernateSessionFactory {

    /** 
     * Location of hibernate.cfg.xml file.
     * Location should be on the classpath as Hibernate uses  
     * #resourceAsStream style lookup for its configuration file. 
     * The default classpath location of the hibernate config file is 
     * in the default package. Use #setConfigFile() to update 
     * the location of the configuration file for the current session.   
     */
    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() {
    }

    /**
     * Returns the ThreadLocal Session instance.  Lazy initialize
     * the <code>SessionFactory</code> if needed.
     *
     *  @return Session
     *  @throws HibernateException
     */
    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;
    }

    /**
     *  Rebuild hibernate session factory
     *
     */
    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();
        }
    }

    /**
     *  Close the single hibernate session instance.
     *
     *  @throws HibernateException
     */
    public static void closeSession() throws HibernateException {
        Session session = (Session) threadLocal.get();
        threadLocal.set(null);

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

    /**
     *  return session factory
     *
     */
    public static org.hibernate.SessionFactory getSessionFactory() {
        return sessionFactory;
    }
    /**
     *  return hibernate configuration
     *
     */
    public static Configuration getConfiguration() {
        return configuration;
    }

}

AbstractUser.java

package vo;

/**
 * AbstractUser entity provides the base persistence definition of the User
 * entity. @author MyEclipse Persistence Tools
 */

public abstract class AbstractUser implements java.io.Serializable {

    // Fields

    private Integer id;
    private String username;
    private String password;
    private String role;

    // Constructors



    /** default constructor */
    public AbstractUser() {
    }

    /** full constructor */
    public AbstractUser(String username, String password,String role) {
        this.username = username;
        this.password = password;
        this.role=role;
    }

    // Property accessors

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

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

    public String getUsername() {
        return this.username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

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

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

    public void setRole(String role) {
        this.role = role;
    }
}

BaseHibernateDAO.java

package vo;

import org.hibernate.Session;
import util.HibernateSessionFactory;


/**
 * Data access object (DAO) for domain model
 * @author MyEclipse Persistence Tools
 */
public class BaseHibernateDAO implements IBaseHibernateDAO {

    public Session getSession() {
        return HibernateSessionFactory.getSession();
    }

}

IBaseHibernateDAO.java

package vo;

import org.hibernate.Session;


/**
 * Data access interface for domain model
 * @author MyEclipse Persistence Tools
 */
public interface IBaseHibernateDAO {
    public Session getSession();
}

User.java

package vo;

/**
 * User entity. @author MyEclipse Persistence Tools
 */
public class User extends AbstractUser implements java.io.Serializable {

    // Constructors

    /** default constructor */
    public User() {
    }

    /** full constructor */
    public User(String username, String password,String role) {
        super(username, password,role);
    }

}

UserDAO.java

package vo;

import java.util.Iterator;
import java.util.List;

import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import util.HibernateSessionFactory;

/**
 * A data access object (DAO) providing persistence and search support for User
 * entities. Transaction control of the save(), update() and delete() operations
 * can directly support Spring container-managed transactions or they can be
 * augmented to handle user-managed Spring transactions. Each of these methods
 * provides additional information for how to configure it for the desired type
 * of transaction control.
 * 
 * @see vo.User
 * @author MyEclipse Persistence Tools
 */
public class UserDAO extends BaseHibernateDAO {
    private static final Logger log = LoggerFactory.getLogger(UserDAO.class);
    // property constants
    public static final String USERNAME = "username";
    public static final String PASSWORD = "password";

    /**
     * @param username
     * @return 检查用户名是否存在
     */
    public User selectRegist(String username){
        try{
        Session session=getSession();
        Query query=session.createQuery("from User where username=?");
        query.setParameter(1, username);
        List list=query.list();
        User user = null;

         Iterator it=list.iterator();


         while(it.hasNext()){

             user=(User)it.next();
             System.out.println(user.getUsername());

         }
            return user;
        }catch(Exception e){
            e.printStackTrace();
            return null;
        }
    }
    /**
     * @param username
     * @param password
     * @return 登陆检查用户名和密码，确认身份
     */
    public User LoginCheck(String username,String password,String role){
        System.out.println("this is LoginCheck method !");
        log.debug("LoginChecking User instance");
        try {
                Session session = getSession();
                /*Transaction tran = session.beginTransaction();*/
                Query queryObject = session.createQuery("from User where username=? and password=? and role=?");
                System.out.println("pass1");
                queryObject.setString(0, username);
                queryObject.setString(1,password);
                queryObject.setString(2, role);
                List list=queryObject.list();
                /*tran.commit();*/
                System.out.println("pass2");
                User user = null;

                 Iterator it=list.iterator();


                 while(it.hasNext()){

                     user=(User)it.next();
                     //System.out.println(user.getUsername());

                 }

                return user;


        } catch (RuntimeException re) {
            log.error("find by property name failed", re);
            throw re;

        }       

    }
    /**
     * @param user
     * 进行注册，向数据库插入数据
     */
    public void saveRegist(User user){
        Session session = null ;
        Transaction tx=null;
        try{
            session = getSession();
            tx=session.beginTransaction();
            session.save(user);
            tx.commit();
        }catch(Exception e){
            e.printStackTrace();
            System.out.println("提交数据出错了");
            if(tx!=null)tx.rollback();
        }finally{
            session.close();
        }

    }
}

User.hbm.xml

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<!-- 
    Mapping file autogenerated by MyEclipse Persistence Tools
-->
<hibernate-mapping>
    <class name="vo.User" table="user" catalog="bookmanage">
        <id name="id" type="java.lang.Integer">
            <column name="Id" />
            <generator class="identity" />
        </id>
        <property name="username" type="java.lang.String">
            <column name="username" not-null="true" />
        </property>
        <property name="password" type="java.lang.String">
            <column name="password" not-null="true" />
        </property>
        <property name="role" type="java.lang.String">
            <column name="role" not-null="true" />
        </property>
    </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://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<!-- Generated by MyEclipse Hibernate Tools.                   -->
<hibernate-configuration>

    <session-factory>
        <property name="dialect">
            org.hibernate.dialect.MySQLDialect
        </property>
        <property name="connection.url">
            jdbc:mysql://localhost:3306/bookManage
        </property>
        <property name="connection.username">root</property>
        <property name="connection.password">1011</property>
        <property name="connection.driver_class">
            com.mysql.jdbc.Driver
        </property>
        <property name="myeclipse.connection.profile">
            bookDriver
        </property>
        <mapping resource="vo/User.hbm.xml" />

    </session-factory>

</hibernate-configuration>

struts.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
<package name="mypackage" extends="struts-default" namespace="/">
<action name="login" class="action.LoginAction">
    <result name="success">/success.jsp</result>
    <result name="error">/error.jsp</result>
    <result name="admin">/admin.jsp</result>
    <result name="input">/index.jsp</result>
</action>
<action name="regist" class="action.RegistAction">
    <result name="success">/success.jsp</result>
    <result name="error">/error.jsp</result>
    <result name="input">/regist.jsp</result>
</action>
</package>
</struts>  

index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@taglib prefix="s" uri="/struts-tags"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>login</title>
  </head>

  <body>
    <s:form action="login" method="post">
    <s:radio list="#{'1':'admin','0':'user' }" name="user.role" label="role" value="0" />
    <s:textfield name="user.username" label="用户名"/>
    <s:password name="user.password" label="密码"/>
    <s:submit value="登陆"/>
    <a name="regist" id="loginRegist" href="regist.jsp">regist</a>
  </s:form>
  </body>
</html>

regist.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@taglib prefix="s" uri="/struts-tags"%>
<html>
  <head>
    <title>regist</title>
  </head>

  <body>
    <s:form action="regist">
    <s:textfield name="user.username" label="用户名"/>
    <s:password name="user.password" label="密码"/>
    <s:password name="repassword" label="确认密码"/>
    <s:submit value="注册"/>
  </s:form>
  </body>
</html>

需要注意的是引入myeclipse自带的struts2和hibernate时，antlr-2.7.7.jar包重复，运行时会报错，本例的用法是直接将struts2的类库导出去，将struts用到的几个jar包铐入工程，放置在/linda/WebRoot/WEB-INF/lib目录下。（如果没有不清楚如何配置struts和hibernate，可以看一下这篇博客：http://blog.csdn.net/weixin_36380516/article/details/53822344）