SSH框架的登录实例

来源：互联网发布：网络安全工程师考试编辑：程序博客网时间：2024/06/02 18:20

这个例子详细地讲叙了如何通过搭建SSH实现用户登录，通过此例子可以了解springMVC基本的控制流程和思想。开发环境：MyEclipse2014，MySql，struts 2.1,spring 3.1, hibernate 3.2

第一步：新建web project工程SSH_TEST。

第二步：导入struts 2框架，此步骤请参考本人以前的文章http://blog.csdn.net/moon__stone888888/article/details/51779256或http://blog.csdn.net/moon__stone888888/article/details/51803997

第三步：导入spring框架，此步骤请参考本人以前的文章http://blog.csdn.net/moon__stone888888/article/details/51779256

第四步：新建数据库logindemo，在此数据库中新建一个表user，字段分别为id（int），username(varchar)，password（varchar），配置MySql数据库连接，请参考本人以前的文章：http://blog.csdn.net/moon__stone888888/article/details/51782390

第五步：导入hibernate框架，此步骤请参考本人以前的文章：http://blog.csdn.net/moon__stone888888/article/details/51779256或http://blog.csdn.net/moon__stone888888/article/details/51823886

第六步：使用hibernate自动生成永久的java文件

在src目录下新建com.ssh.user包，邮件logindemo数据库下user表，选择Hibernate ReverseEngineering。弹出一个对话框，此处请参考http://blog.csdn.net/moon__stone888888/article/details/51823886文章的第五步，稍有不同的是，在第一个对话框中勾选“JavaData Access Object(DAO)”

完成对话框的设置，在com.ssh.user下面生成了四个文件，AbstractUser.java,User.jva,User.hbm.xml，UserDAO.java。同时可以看到hibernate.cfg.xml文件里有了User.hbm.xml的映射。

第七步：在src下新建com.ssh.dao的包和com.ssh.dao.impl的包，将UserDAO.java移到com.ssh.dao.impl下，在com.ssh.dao包下建一个接口文件,IUserDAO.java。

UserDAO.java的内容：

packagecom.ssh.dao.impl;

importjava.util.List;

importorg.apache.commons.logging.Log;

importorg.apache.commons.logging.LogFactory;

importorg.hibernate.LockMode;

importorg.springframework.context.ApplicationContext;

importorg.springframework.orm.hibernate3.support.HibernateDaoSupport;

importcom.ssh.dao.IUserDAO;

importcom.ssh.user.User;

/**

* A data access object (DAO) providingpersistence and search support for User

* entities. Transaction control of the save(),update() and delete() operations

* can directly support Springcontainer-managed transactions or they can be

* augmented to handle user-managed Springtransactions. Each of these methods

* provides additional information for how toconfigure it for the desired type

* of transaction control.

* @see com.ssh.user.User

* @author MyEclipse Persistence Tools

publicclass UserDAO extends HibernateDaoSupport implements IUserDAO {

private static final Log log =LogFactory.getLog(UserDAO.class);

// property constants

public static final String USERNAME ="username";

public static final String PASSWORD ="password";

protected void initDao() {

// do nothing

}

/* (non-Javadoc)

* @seecom.ssh.dao.impl.IUserDAO#save(com.ssh.user.User)

@Override

public void save(UsertransientInstance) {

log.debug("saving Userinstance");

try {

getHibernateTemplate().save(transientInstance);

log.debug("savesuccessful");

} catch (RuntimeException re){

log.error("savefailed", re);

throw re;

}

public void delete(UserpersistentInstance) {

log.debug("deleting Userinstance");

try {

getHibernateTemplate().delete(persistentInstance);

log.debug("deletesuccessful");

} catch (RuntimeException re){

log.error("deletefailed", re);

throw re;

}

/* (non-Javadoc)

* @seecom.ssh.dao.impl.IUserDAO#findById(java.lang.Integer)

@Override

public User findById(java.lang.Integerid) {

log.debug("getting Userinstance with id: " + id);

try {

User instance =(User) getHibernateTemplate().get(

"com.ssh.user.User",id);

return instance;

} catch (RuntimeException re){

log.error("getfailed", re);

throw re;

}

public List findByExample(Userinstance) {

log.debug("finding Userinstance by example");

try {

List results =getHibernateTemplate().findByExample(instance);

log.debug("findby example successful, result size: "

+results.size());

return results;

} catch (RuntimeException re){

log.error("findby example failed", re);

throw re;

}

public List findByProperty(StringpropertyName, Object value) {

log.debug("finding Userinstance with property: " + propertyName

+ ",value: " + value);

try {

String queryString ="from User as model where model."

+propertyName + "= ?";

returngetHibernateTemplate().find(queryString, value);

} catch (RuntimeException re){

log.error("findby property name failed", re);

throw re;

}

/* (non-Javadoc)

* @seecom.ssh.dao.impl.IUserDAO#findByUsername(java.lang.Object)

@Override

public List findByUsername(Objectusername) {

returnfindByProperty(USERNAME, username);

}

public List findByPassword(Objectpassword) {

returnfindByProperty(PASSWORD, password);

}

public List findAll() {

log.debug("finding allUser instances");

try {

String queryString ="from User";

returngetHibernateTemplate().find(queryString);

} catch (RuntimeException re){

log.error("findall failed", re);

throw re;

}

public User merge(UserdetachedInstance) {

log.debug("merging Userinstance");

try {

User result = (User)getHibernateTemplate().merge(detachedInstance);

log.debug("mergesuccessful");

return result;

} catch (RuntimeException re){

log.error("mergefailed", re);

throw re;

}

public void attachDirty(User instance){

log.debug("attachingdirty User instance");

try {

getHibernateTemplate().saveOrUpdate(instance);

log.debug("attachsuccessful");

} catch (RuntimeException re){

log.error("attachfailed", re);

throw re;

}

public void attachClean(User instance){

log.debug("attachingclean User instance");

try {

getHibernateTemplate().lock(instance,LockMode.NONE);

log.debug("attachsuccessful");

} catch (RuntimeException re){

log.error("attachfailed", re);

throw re;

}

public static IUserDAOgetFromApplicationContext(ApplicationContext ctx) {

return (IUserDAO)ctx.getBean("UserDAO");

}

IUserDAO.java的内容：

package com.ssh.dao;

import java.util.List;

import com.ssh.user.User;

public interface IUserDAO {

public abstract voidsave(User transientInstance);

public abstract UserfindById(java.lang.Integer id);

public abstract ListfindByUsername(Object username);

public abstract ListfindByPassword(Object password);

public abstract voiddelete(User persistentInstance);

}

第八步：在src下新建包com.ssh.service和com.ssh.service.impl，这里是spring的结构，实现业务逻辑。

在com.ssh.service下新建接口文件IUserService.java，在com.ssh.service.impl新建实现文件UserService.java。

IUserService.java接口的内容：

package com.ssh.service;

import com.ssh.user.User;

public interface IUserService {

public User getUserById(Integer id);

public User getUserByUsername(Stringusername);

public User getUserByPassword(Stringpassword);

public void addUser(User user);

public void DeleteUser(User user);

public void DeleteUserByUsername(Stringusername);

public void UpdateByUsername(Stringusername, String password_updated);

}

UserService.java实现类的内容：

package com.ssh.service.impl;

import java.util.List;

import com.ssh.dao.IUserDAO;

import com.ssh.service.IUserService;

import com.ssh.user.User;

import org.hibernate.Transaction;

import org.hibernate.SessionFactory;

import org.hibernate.cfg.Configuration;

import org.hibernate.Session;

public class UserService implements IUserService {

privateIUserDAO userDAO;

publicvoid addUser(User user) {

SessionFactory sf = newConfiguration().configure().buildSessionFactory();

Sessionsession = sf.openSession();

Transactiontx = session.beginTransaction();

//userDAO.save(user);

session.save(user);

tx.commit();

session.clear();

}

publicvoid DeleteUser(User user) {

SessionFactory sf = new Configuration().configure().buildSessionFactory();

Sessionsession = sf.openSession();

Transactiontx = session.beginTransaction();

//userDAO.delete(user);

session.delete(user);

tx.commit();

session.clear();

}

publicvoid DeleteUserByUsername(String username) {

int i;

List list =userDAO.findByUsername(username);

if (list.size() == 0)

return;

SessionFactory sf = newConfiguration().configure().buildSessionFactory();

Sessionsession = sf.openSession();

Transactiontx = session.beginTransaction();

try{

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

{

Useruser = (User)list.get(i);

session.delete(user);

}

//userDAO.delete(user);

//session.save(user);

tx.commit();

}

catch(RuntimeException re) {

tx.rollback();

throwre;

}finally {

session.clear();

}

publicvoid UpdateByUsername(String username, String password_updated) {

int i;

List list = userDAO.findByUsername(username);

if (list.size() == 0)

return;

SessionFactory sf = newConfiguration().configure().buildSessionFactory();

Sessionsession = sf.openSession();

Transactiontx = session.beginTransaction();

try{

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

{

Useruser = (User)list.get(i);

user.setPassword(password_updated);

session.update(user);

}

//userDAO.delete(user);

//session.save(user);

tx.commit();

}

catch(RuntimeException re) {

tx.rollback();

throwre;

}finally {

session.clear();

}

publicUser getUserById(Integer id) {

returnuserDAO.findById(id);

}

publicUser getUserByUsername(String username) {

Listlist = userDAO.findByUsername(username);

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

return null;

} else{

return (User) list.get(0);

}

publicUser getUserByPassword(String password) {

List list = userDAO.findByPassword(password);

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

return null;

}else {

return (User) list.get(0);

}

publicIUserDAO getUserDAO() {

returnuserDAO;

}

publicvoid setUserDAO(IUserDAO userDAO) {

this.userDAO = userDAO;

}

在src下新建包com.ssh.struts.action，新建一个类文件BaseAction.java

BaseAction.java的内容为：

packagecom.ssh.struts.action;

importorg.springframework.web.context.WebApplicationContext;

importorg.springframework.web.context.support.WebApplicationContextUtils;

import com.ssh.service.IUserService;

importcom.ssh.user.User;

public classBaseAction {

private int fid = 20;

private String username;

private String password;

private IUserService userService;

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 setUserService(IUserServiceuserService) {

this.userService = userService;

}

public String execute() {

if("suo".equals(this.username) &&"123".equals(this.password))

return "success";

else

return "fail";

}

Useruser = new User();

//user.setUsername(this.username);

//user.setPassword(this.password);

//this.userService.addUser(user);

//this.userService.DeleteUser(user);

//this.userService.UpdateByUsername(this.username,this.password);

user= this.userService.getUserByUsername(this.username);

if (user != null)

{

if (this.password.equals(user.getPassword()))

return"success";

}

return"fail";

}

Spring的配置文件applicationContext.xml：

<?xmlversion="1.0"encoding="UTF-8"?>

<beans

xmlns="http://www.springframework.org/schema/beans"

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

xmlns:p="http://www.springframework.org/schema/p"

xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-3.1.xsd">

<beanid="sessionFactory"

class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">

<propertyname="configLocation"

value="classpath:hibernate.cfg.xml">

</property>

</bean>

<beanid="transactionManager"class="org.springframework.orm.hibernate3.HibernateTransactionManager">

<propertyname="sessionFactory">

<reflocal="sessionFactory"/>

</property>

</bean>

<beanid="userDAO"class="com.ssh.dao.impl.UserDAO">

<propertyname="sessionFactory">

<refbean="sessionFactory"/>

</property>

</bean>

<beanid="userService"class="com.ssh.service.impl.UserService">

<propertyname="userDAO"ref="userDAO"/>

</bean>

<beanname="baseActionBean"class="com.ssh.struts.action.BaseAction"scope="prototype">

<propertyname="userService"ref="userService"/>

</bean>

</beans>

Structs的配置文件struts.xml:

<?xmlversion="1.0"encoding="UTF-8"?>

<!DOCTYPE struts PUBLIC"-//Apache Software Foundation//DTD StrutsConfiguration 2.1//EN""http://struts.apache.org/dtds/struts-2.1.dtd">

<packagename="test"namespace="/test"extends="struts-default">

<actionname="login"class="baseActionBean">

<resultname="success">/WEB-INF/result/success.jsp</result>

<resultname="fail">/WEB-INF/result/fail.jsp</result>

</action>

</package>

</struts>

Web.xml配置文件：

<?xmlversion="1.0"encoding="UTF-8"?>

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns="http://xmlns.jcp.org/xml/ns/javaee"xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaeehttp://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"id="WebApp_ID"version="3.1">

<display-name>SSHTEST</display-name>

<welcome-file-list>

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

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

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

<welcome-file>default.html</welcome-file>

<welcome-file>default.htm</welcome-file>

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

</welcome-file-list>

<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>

<filter-name>hibernateFilter</filter-name>

<filter-class>

org.springframework.orm.hibernate3.support.OpenSessionInViewFilter

</filter-class>

</filter>

<filter-mapping>

<filter-name>hibernateFilter</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

</listener>

<context-param>

<param-name>contextConfigLocation</param-name>

<param-value>classpath:applicationContext.xml</param-value>

</context-param>

</web-app>

0 0