Struts 2+Hibernate实现完整登录注册（带验证）

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Struts 2+Hibernate实现完整登录注册

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环境

MyEclipse 2014
数据库：SQL sever 2016
Tomcat：apache-tomcat-8.0.46
JDK：1.6
Sturts版本：2.1
Hibernate版本：4.1

前期准备

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创建项目以后，为项目添加Sturts和Hibernate能力

连接数据库并生成POJO类：Hibernate框架连接SQL sever 2016完整详细步骤

还有一个一定会出错的地方，因为Hibernate和Struts 2 中有相同的包（版本不同）会引起冲突，所以要把Struts 2 中的antlr-2.7.2.jar移除，具体操作可以看这篇：java.lang.NoSuchMethodError: antlr.collections.AST.getLine()I最终解决方案

登录功能

1.先编写对数据库进行操作的DAO类UserInfoDao.java

public class UserInfoDao {    private Session session;    private Transaction t;    public void getCurrentSession(){        session=HibernateSessionFactory.getSession();    }    public void closeSession(){        if(session!=null){            HibernateSessionFactory.closeSession();        }    }    /**     * 登录函数：验证用户名和密码     * @param vo     * @return true 存在     * @return false 不存在     */    public boolean loginByUserInfo(UserInfo vo){        getCurrentSession();        t=session.beginTransaction();        String userAccount = vo.getUserAccount();        String userPassword = vo.getUserPassword();        Query query = session.createQuery("from UserInfo where userAccount='"+userAccount+"' and userPassword='"+userPassword+"'");        List list=query.list();        closeSession();        if(list!=null)            return true;        return false;    }}

2.LoginAction.java

package org.action;import java.util.Map;import org.dao.UserInfoDao;import org.vo.UserInfo;import com.opensymphony.xwork2.ActionContext;import com.opensymphony.xwork2.ActionSupport;public class LoginAction extends ActionSupport{    private UserInfo userInfo;    private String message;  //用于显示验证错误信息    /**     *  处理用户请求的 execute 方法     *  因为此函数在 validate()后执行，所以可以保证用户名和密码正确     *  @return SUCCESS      */    public String execute() throws Exception{        Map<String,Object> session = ActionContext.getContext().getSession();        session.put("userInfo", userInfo);        return SUCCESS;    }    /**     *  验证用户名和密码     *  先判断是否为空，再验证     */    public void validate(){        if(userInfo.getUserAccount()==null || userInfo.getUserAccount().equals(""))            this.addFieldError("userAccount", "用户名不能为空");        else if(userInfo.getUserPassword()==null || userInfo.getUserPassword().equals(""))            this.addFieldError("userPassword", "密码不能为空");        else {            UserInfoDao dao = new UserInfoDao();            if(dao.loginByUserInfo(userInfo)==false)                this.addFieldError("userAccount", "用户名或密码错误");        }    }    //自动生成的getter和setter    public UserInfo getUserInfo() {        return userInfo;    }    public void setUserInfo(UserInfo userInfo) {        this.userInfo = userInfo;    }    public String getMessage() {        return message;    }    public void setMessage(String message) {        this.message = message;    }}

3.登录界面login.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%><%@taglib prefix="s" uri="/struts-tags" %><html>  <head>  <title>login.jsp</title>  </head>  <body>    <s:form action="loginAction" method="post" theme="simple">        <s:fielderror><s:property value="message"/></s:fielderror><br>        用户名：<s:textfield name="userInfo.userAccount"/><br>        密码：<s:password name="userInfo.userPassword"/><br>        <s:submit value="登录"/><s:reset value="重置"/>    </s:form>  </body></html>

登录成功界面success.jsp：

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%><%@taglib prefix="s" uri="/struts-tags" %><html>  <head>  <title>success.jsp</title>  </head>  <body>    <s:set name="userInfo" value="#session['userInfo']"/>    <s:property value="#userInfo.userAccount"/>,你好！  </body></html>

4.修改struts.xml文件

<?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="default" extends="struts-default">    <!-- 用户登录 -->    <action name="loginAction" class="org.action.LoginAction">        <result name="success">/success.jsp</result>        <result name="input">/login.jsp</result>    </action>    <!-- ... -->    </package></struts>

访问http://localhost:8080/Ex5/login.jsp，可以判断输入是否合法，且可以验证用户名和密码，并在上面给出错误信息

注册功能

1.在UserInfoDao.java中添加实现注册的函数

package org.dao;import java.util.List;import org.hibernate.Query;import org.hibernate.Session;import org.hibernate.Transaction;import org.util.HibernateSessionFactory;import org.vo.UserInfo;public class UserInfoDao {    private Session session;    private Transaction t;    public void getCurrentSession(){        session=HibernateSessionFactory.getSession();    }    public void closeSession(){        if(session!=null){            HibernateSessionFactory.closeSession();        }    }    /**     * 登录函数：验证用户名和密码     * @param vo     * @return true 存在     * @return false 不存在     */    public boolean loginByUserInfo(UserInfo vo){        getCurrentSession();        t=session.beginTransaction();        String userAccount = vo.getUserAccount();        String userPassword = vo.getUserPassword();        Query query = session.createQuery("from UserInfo where userAccount='"+userAccount+"' and userPassword='"+userPassword+"'");        List list=query.list();        closeSession();        if(list!=null)            return true;        return false;    }    /**     * 注册函数：先查询表中是否已经存在相同的用户名，再进行插入操作     * @param vo     * @return true 注册成功     * @return false 注册失败     */    public boolean registerByUserInfo(UserInfo vo){        getCurrentSession();        t=session.beginTransaction();        String userAccount = vo.getUserAccount();        Query query = session.createQuery("from UserInfo where userAccount='"+userAccount+"'");        List list = query.list();        if(list.size()>0){//如果表中已经有相同的用户名            closeSession();            return false;        }else{            session.save(vo);            t.commit();            closeSession();            return true;        }    }}

2.RegisterAction.java实现判断输入是否合法以及数据库中是否已存在相同的用户名

package org.action;import java.util.Map;import org.dao.UserInfoDao;import org.vo.UserInfo;import com.opensymphony.xwork2.ActionContext;import com.opensymphony.xwork2.ActionSupport;public class RegisterAction extends ActionSupport{    private String userAccount;    private String userPassword;    private String rePassword;    private String message;  //用于显示验证错误信息    /**     *  处理用户请求的 execute 方法     *  因为此函数在 validate()后执行，所以可以保证用户名和密码正确     *  @return SUCCESS      */    public String execute() throws Exception{        Map<String,Object> session = ActionContext.getContext().getSession();        UserInfo vo = new UserInfo();        vo.setUserAccount(userAccount);        vo.setUserPassword(userPassword);        session.put("userInfo", vo);        return SUCCESS;    }    /**     *  先验证用户名和密码是否为空     *  再验证进行插入操作     */    public void validate(){        if(userAccount==null||userAccount.equals("")){            this.addFieldError("userAccount", "用户名不能为空");        }else if(userPassword==null||userPassword.equals("")){            this.addFieldError("userPassword", "密码不能为空");        }else if(userPassword.equals(rePassword)==false){            this.addFieldError("rePassword", "两次密码必须一致");        }else{            UserInfoDao dao = new UserInfoDao();            UserInfo vo = new UserInfo();            vo.setUserAccount(userAccount);            vo.setUserPassword(userPassword);            if(dao.registerByUserInfo(vo)==false){                this.addFieldError("userAccount", "对不起！该用户名已被注册");            }        }    }    //自动生成的getter和setter    public String getUserAccount() {        return userAccount;    }    public void setUserAccount(String userAccount) {        this.userAccount = userAccount;    }    public String getUserPassword() {        return userPassword;    }    public void setUserPassword(String userPassword) {        this.userPassword = userPassword;    }    public String getRePassword() {        return rePassword;    }    public void setRePassword(String rePassword) {        this.rePassword = rePassword;    }    public String getMessage() {        return message;    }    public void setMessage(String message) {        this.message = message;    }}

3.注册界面register.java

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%><%@taglib prefix="s" uri="/struts-tags" %><html>  <head>  <title>register.jsp</title>  </head>  <body>    <s:form action="registerAction" method="post" theme="simple">    <s:fielderror><s:property value="message"/></s:fielderror><br>        用户名:<s:textfield name="userAccount" /><br>        密码:<s:password name="userPassword" /><br>        重复密码:<s:password name="rePassword"/><br>        <s:submit value="提交"/><s:reset value="重置"/>    </s:form>  </body></html>

4.在struts.xml文件中添加用户注册的action配置

<?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="default" extends="struts-default">    <!-- 用户登录 -->    <action name="loginAction" class="org.action.LoginAction">        <result name="success">/success.jsp</result>        <result name="input">/login.jsp</result>    </action>    <!-- 用户注册 -->    <action name="registerAction" class="org.action.RegisterAction">        <result name="success">/success.jsp</result>        <result name="input">/register.jsp</result>    </action>    </package></struts>

访问http://localhost:8080/Ex5/register.jsp即可实现注册

其他：

最终的struts.xml

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web.xml

<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">  <display-name>Ex5</display-name>  <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></web-app>

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