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基于struts2和hibernate实现登录和注册功能

程序员文章站 2024-04-02 09:56:04
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，...

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：

基于struts2和hibernate实现登录和注册功能

 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" />  
          <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&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。

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