基于struts2和hibernate的登录和注册功能——完整实例

时间：2021-04-06 06:37:56

1、该项目使用MySQL数据库，数据库名为test，表名info，如图所示：

基于struts2和hibernate的登录和注册功能——完整实例

2、配置web.xml（Struts2使用）

<?xml version="1.0" encoding="UTF-8"?>

<web-app version="2.5"

    xmlns="http://java.sun.com/xml/ns/javaee"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee

    http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

    <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>

  <welcome-file-list>

    <welcome-file>index.jsp</welcome-file>

  </welcome-file-list>

</web-app>

3、编写视图组件（JSP页面）

(1)登录页面　login.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"

    pageEncoding="UTF-8"%>

<%@ taglib prefix="s" uri="/struts-tags" %>

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

<title><s:text name="基于SH的登录注册系统" /></title>

</head>

<body bgcolor="#CCCCFF">

    <s:form action="login" method="post">

        <br><br><br><br><br><br>

        <table border="1" align="center" bgcolor="AABBCCDD">

            <tr>

                <td>

                    <s:textfield name="userName" label="用户名字" size="16" />

                </td>

            </tr>

            <tr>

                <td>

                    <s:password name="password" label="用户密码" size="18" />

                </td>

            </tr>

            <tr>

                <td colspan="2" align="center">

                    <s:submit value="登录" />

                </td>

            </tr>

            <tr>

                <td colspan="2" align="center">

                    <s:a href="http://localhost:8080/hibernate01/register.jsp">注册</s:a>

                </td>

            </tr>

        </table>

    </s:form>

</body>

</html>

(2)登陆成功页面　success.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"

    pageEncoding="UTF-8"%>

<%@ taglib prefix="s" uri="/struts-tags" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

<title>Insert title here</title>

</head>

<body bgcolor="#CCCCFF">

    <hr>

    <table>

        <tr>

            <td>

                欢迎<s:property value="userName"/>,登陆成功！

            </td>

        </tr>

    </table>

    <hr>

</body>

</html>

(3)注册页面　register.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"

    pageEncoding="UTF-8"%>

<%@ taglib prefix="s" uri="/struts-tags" %>

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

<title>Insert title here</title>

</head>

<body bgcolor="#CCCCFF">

    <s:form action="register" method="post">

        <br><br><br><br><br><br>

        <table border="1" align="center" bgcolor="AABBCCDD">

            <tr>

                <td>

                    <s:textfield name="userName" label="用户名字" size="16" />

                </td>

            </tr>

            <tr>

                <td>

                    <s:password name="password1" label="用户密码" size="18" />

                </td>

            </tr>

            <tr>

                <td>

                    <s:password name="password2" label="再次输入密码" size="18" />

                </td>

            </tr>

            <tr>

                <td colspan="2" align="center">

                    <input type="submit" value="提交" />&nbsp;&nbsp;

                    <input type="reset" value="清空" />

                </td>

            </tr>

            <tr>

                <td colspan="2" align="center">

                    <s:a href="http://localhost:8080/hibernate01/login.jsp">返回</s:a>

                </td>

            </tr>

        </table>

    </s:form>

</body>

</html>

4、业务控制器Action

(1)登录页面对应的业务控制器LoginAction.java

其中，重写valiadate()方法，进行手工验证

package loginRegisterAction;

import java.util.List;

import loginRegisterDao.LoginRegisterInfo;

import PO.UserInfoPO;

import com.opensymphony.xwork2.ActionSupport;

public class LoginAction extends ActionSupport{

    private String userName;

    private String password;

    private String message="error";

    private List list;

    public String getUserName() {

        return userName;

    }

    public void setUserName(String userName) {

        this.userName = userName;

    }

    public String getPassword() {

        return password;

    }

    public void setPassword(String password) {

        this.password = password;

    }

    public void validate(){

        if(this.getUserName()==null||this.getUserName().length()==0){

            addFieldError("userName", "用户名不能为空!");

        }else{

            LoginRegisterInfo info= new LoginRegisterInfo();

            list=info.queryInfo("userName", this.getUserName());

            if(list.size()==0){

                addFieldError("userName", "该用户尚未注册");

            }else{

                UserInfoPO ui=new UserInfoPO();

                for(int i=0;i<list.size();i++){

                    ui=(UserInfoPO) list.get(i);

                    if(this.getUserName().equals(ui.getUserName())){

                        if(ui.getPassword().equals(this.getPassword())){

                            message=SUCCESS;

                        }else{

                            addFieldError("password", "登录密码不正确");

                        }

                    }

                }

            }

        }

    }

    public String execute() throws Exception{

        return message;

    }

}

(2)注册页面对应的业务控制器RegisterAction.java

package loginRegisterAction;

import java.util.List;

import loginRegisterDao.LoginRegisterInfo;

import PO.UserInfoPO;

import com.opensymphony.xwork2.ActionSupport;

public class RegisterAction extends ActionSupport {

    private String userName;

    private String password1;

    private String password2;

    private String mess=ERROR;    //ERROR等同于"error"

    private List list;

    public String getUserName() {

        return userName;

    }

    public void setUserName(String userName) {

        this.userName = userName;

    }

    public String getPassword1() {

        return password1;

    }

    public void setPassword1(String password1) {

        this.password1 = password1;

    }

    public String getPassword2() {

        return password2;

    }

    public void setPassword2(String password2) {

        this.password2 = password2;

    }

    public void validate(){

        if(this.getUserName()==null||this.getUserName().length()==0){

            addFieldError("userName", "用户名不能为空！");

        }else{

            LoginRegisterInfo info= new LoginRegisterInfo();

            list=info.queryInfo("userName", this.getUserName());

            UserInfoPO ui=new UserInfoPO();

            for(int i=0;i<list.size();i++){

                ui=(UserInfoPO) list.get(i);

                if(ui.getUserName().equals(this.getUserName())){

                    addFieldError("userName", "用户名已存在！");

                }

            }

        }

        if(this.getPassword1()==null||this.getPassword1().length()==0){

            addFieldError("password1", "登录密码不许为空！");

        }else if(this.getPassword2()==null||this.getPassword2().length()==0){

            addFieldError("password2", "重复密码不许为空！");

        }else if(!this.getPassword1().equals(this.getPassword2())){

            addFieldError("password2", "两次密码不一致！");

        }

    }

    public UserInfoPO userInfo(){

        UserInfoPO info=new UserInfoPO();

        info.setUserName(this.getUserName());

        info.setPassword(this.getPassword1());

        return info;

    }

    public String execute() throws Exception{

        LoginRegisterInfo lr=new LoginRegisterInfo();

        String ri=lr.saveInfo(userInfo());

        if(ri.equals("success")){

            mess=SUCCESS;

        }

        return mess;

    }

}

5、在struts.xml中配置Action

<!DOCTYPE struts PUBLIC

    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"

    "http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>

    <package name="default" extends="struts-default">

        <action name="register" class="loginRegisterAction.RegisterAction">

            <result name="success">/login.jsp</result>

            <result name="input">/register.jsp</result>

            <result name="error">/register.jsp</result>

        </action>

        <action name="login" class="loginRegisterAction.LoginAction">

            <result name="success">/success.jsp</result>

            <result name="input">/login.jsp</result>

            <result name="error">/login.jsp</result>

        </action>

    </package>

</struts>

6、Hibernate的配置文件

使用Hibernate需要通过Hibernate的配置文件加载数据库驱动以及与数据建立连接，配置文件为hibernate.cfg.xml

<!DOCTYPE hibernate-configuration PUBLIC

"-//Hibernate/Hibernate Configuration DTD 3.0//EN"

"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">

<hibernate-configuration>

    <session-factory>

        <property name="connection.driver_class">com.mysql.jdbc.Driver</property>

        <property name="connection.url">jdbc:mysql://localhost:3306/test?useUnicode=true&amp;characterEncoding=utf-8</property>

        <property name="connection.username">root</property>

        <property name="connection.password"></property>

        <!-- 指定数据库的方言 -->

        <property name="dialect">org.hibernate.dialect.MySQL5Dialect</property>

        <!-- 加入映射文件 -->

        <mapping resource="PO/UserInfoPO.hbm.xml"/>

    </session-factory>

</hibernate-configuration>

7、加载上面Hibernate配置文件的类(HIbernateSessionFactory.java)

package addHibernateFile;

import org.hibernate.Session;

import org.hibernate.SessionFactory;

import org.hibernate.cfg.Configuration;

public class HibernateSessionFactory {

    private SessionFactory sessionFactory;

    public HibernateSessionFactory(){

    }

    public SessionFactory config(){

        try{

            Configuration configuration= new Configuration();

            Configuration configure=configuration.configure("hibernate.cfg.xml");

            return configure.buildSessionFactory();

        }catch(Exception e){

        e.getMessage();

        return null;

        }

    }

    public Session getSession(){

        sessionFactory=config();

        return sessionFactory.openSession();

    }

}

8、PO对象以及对应的映射文件(在同一个包下)

(1)PO对象的类UserInfoPO.Java

package PO;

/*

 * PO对象(持久化对象)的类，与数据库相对应

 */

public class UserInfoPO {

    private int id;

    private String userName;

    private String password;

    public int getId() {

        return id;

    }

    public void setId(int id) {

        this.id = id;

    }

    public String getUserName() {

        return userName;

    }

    public void setUserName(String userName) {

        this.userName = userName;

    }

    public String getPassword() {

        return password;

    }

    public void setPassword(String password) {

        this.password = password;

    }

}

(2) PO对应的映射文件UserInfoPO.hbm.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">

<!-- 映射文件的根元素 -->

<hibernate-mapping>

    <!-- 配置PO对象与数据库中表的对应关系使用class元素，name配置PO对象对应的类，

         table配置该PO对象在数据库中对应的表名，catalog配置表对应的数据库名 -->

    <class name="PO.UserInfoPO" table="info" catalog="test">

        <!-- id元素配置PO对象与数据库中表的对应id字段，name配置PO对象对应的属性，type指定类型

             generator元素将主键自动加入序列 -->

        <id name="id" type="int">

            <column name="id"/>

            <generator class="assigned" />

        </id>

        <property name="userName" type="string">

            <column name="userName" length="30" not-null="true" />

        </property>

        <property name="password" type="string">

            <column name="password" length="30" not-null="true" />

        </property>

    </class>

</hibernate-mapping>

9、完成登录和注册业务功能

将登录和注册业务功能封装到类LoginRegisterInfo(JavaBean)中

数据库操作类LoginRegisterInfo.java:

package loginRegisterDao;

/*

 * 登录和注册业务功能，封装到这个JavaBean

 */

import java.util.List;

import javax.swing.JOptionPane;

import org.hibernate.Query;

import org.hibernate.Session;

import org.hibernate.Transaction;

import PO.UserInfoPO;

import addHibernateFile.HibernateSessionFactory;

public class LoginRegisterInfo {

    private Session session;

    private Transaction transaction;

    private Query query;

    HibernateSessionFactory getSession;

    public LoginRegisterInfo(){

    }

    public String saveInfo(UserInfoPO info){

        String mess="error";

        getSession=new HibernateSessionFactory();

        session=getSession.getSession();

        try{

            transaction=session.beginTransaction();

            session.save(info);

            transaction.commit();

            mess="success";

            return mess;

        }catch(Exception e){

            message("RegisterInfo.error:"+e);

            e.printStackTrace();

            return null;

        }

    }

    public List queryInfo(String type,Object value){

        getSession=new HibernateSessionFactory();

        session=getSession.getSession();

        try{

            String hqlsql="from UserInfoPO as u where u.userName=?";

            query=session.createQuery(hqlsql);

            query.setParameter(0, value);

            List list=query.list();

            transaction=session.beginTransaction();

            transaction.commit();

            return list;

        }catch(Exception e){

            message("LoginRegisterInfo类中有异常，异常为：:"+e);

            e.printStackTrace();

            return null;

            }

    }

    public void message(String mess){

        int type=JOptionPane.YES_NO_OPTION;

        String title="提示信息";

        JOptionPane.showMessageDialog(null, mess,title,type);

    }

}

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