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基于struts2和hibernate实现登录和注册功能

作者：王晓东1号　　发布时间：2022-03-23 00:27:43　

标签：struts2,hibernate,登录,注册

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" />  
<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>

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

<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">


<hibernate-mapping>


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


<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);
}

}

来源：http://www.cnblogs.com/Donnnnnn/p/5692182.html

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基于struts2和hibernate实现登录和注册功能

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