基于struts2和hibernate实现登录和注册功能

发布时间：2020-09-06 16:01:38 来源：脚本之家阅读：180 作者：王晓东1号栏目：编程语言

本文实例为大家分享了struts2和hibernate实现登录和注册功能，供大家参考，具体内容如下

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

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);
  }
  
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持亿速云。

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基于struts2和hibernate实现登录和注册功能

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