SSH框架整合

1.所需要的jar包

容易丢失的是struts中的spring插件struts2-spring-plugin-2.2.3.1.jar

struts的Action由spring的对象工厂负责创建时使用的包asm-3.1.jar

2.web.xml配置

<?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">
 <!-- spring 编码过滤 -->
 <filter>
  <filter-name>encodingFilter</filter-name>
  <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
  <init-param>
   <param-name>encoding</param-name>
   <param-value>utf-8</param-value>
  </init-param>
 </filter>
 <filter-mapping>
  <filter-name>encodingFilter</filter-name>
  <url-pattern>/*</url-pattern>
 </filter-mapping>
 <!-- 初始化spring上下文ApplicationContext -->
 <listener>
     <listener-class>
         org.springframework.web.context.ContextLoaderListener
     </listener-class>
 </listener>
 <context-param>
     <param-name>contextConfigLocation</param-name>
     <param-value>/WEB-INF/classes/applicationContext*.xml</param-value>
 </context-param>
27  
 <welcome-file-list>
  <welcome-file>index.jsp</welcome-file>
 </welcome-file-list>
 <login-config>
  <auth-method>BASIC</auth-method>
 </login-config>
  <!--  struts2过滤器 -->
 <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>

3.Hibernate相关

配置hibernate.cfg.xml,如下

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
          "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
          "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
 5 
<!-- Generated by MyEclipse Hibernate Tools.                   -->
<hibernate-configuration>
    <session-factory>
        <property name="show_sql">true</property>
        <property name="format_sql">true</property>
        <property name="dialect">org.hibernate.dialect.MySQLDialect</property>
        <property name="connection.url">jdbc:mysql://localhost:3306/hib</property>
        <property name="connection.username">root</property>
        <property name="connection.password">123456</property>
        <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="myeclipse.connection.profile">com.mysql.jdbc.Driver</property>
        <mapping resource="com/domin/User.hbm.xml"/>
    </session-factory>
</hibernate-configuration>

创建com.domin.User类，添加User.hbm.xml。

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD3.0//EN"
    "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >
<hibernate-mapping>
    <class name="com.domin.User" table="USERS">
        <id name="id"  type="java.lang.Integer">
            <column name="ID"/>
            <generator class="identity"/>
        </id>
        <property name="username" type="string" column="USERNAME"/>    
        <property name="password" type="string" column="PASSWORD"/>    
    </class>
</hibernate-mapping>

4.创建Dao类

(1).BaseDao 使用spring封装的HibernateDaoSupport,把事务管理交给spring

package com.dao;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
public class BaseDao extends HibernateDaoSupport{
 //..目前还没有写什么
 }

(2).UserDao 继承BaseDao 处理基本的数据库操作

package com.dao;
 2 
import java.util.List;
import com.domin.User;
public class UserDao extends BaseDao{                
    public User getUserByUsername(String username){
 7         
            List list=getHibernateTemplate()
            .find("from User where username=?",username);
            if(list.size()==0) return null;
            return (User)list.get(0);
12         
    }
    public User getUser(String username,String password){
            List list=getHibernateTemplate()
            .find("from User where username=? and password=?",username,password);
            if(list.size()==0) return null;
            return (User)list.get(0);
19         
    }
}

5.创建service类 以Dao对象为属性，处理与业务相关的操作

package com.service;

import com.dao.UserDao;
import com.domin.User;

public class UserService {
    private UserDao userDao;

    public UserDao getUserDao() {
        return userDao;
    }

    public void setUserDao(UserDao userDao) {
        this.userDao = userDao;
    }
    //判断用户名是否存在
    public boolean isExists(String username){
        User user=userDao.getUserByUsername(username);
        return user!=null;
    }
    //判断用户名、密码是否正确
    public boolean isExists(String username,String password){
        return userDao.getUser(username, password)!=null;
    }
}

6.Struts中登陆功能的实现，login.jsp如下

<%@ page  language="java" pageEncoding="UTF-8"%>
<%@ page isELIgnored="false" %>
<%@ taglib uri="/struts-tags" prefix="s" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<body>
    <br/>通用错误：
    <s:actionerror/>
    <br/>
    <s:form method="post" action="login!login.action" > 
        用户名<input type="text" name="user.username" />
        ${errors['user.username'][0]}
        <br/>
        密码<input type="password" name="user.password" />
        ${errors['user.password'][0]}
        <br/>
        <input type="submit" value='登陆' />
        <input type="reset" value='重置' />
    </s:form>
</body>
</html>

7.处理的Action

package com.control;
 2 
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;
import com.domin.User;
import com.opensymphony.xwork2.Action;
import com.opensymphony.xwork2.ActionSupport;
import com.service.UserService;
 9 
public class Login extends ActionSupport{
    private User user;
    private UserService userService;
    //省略user,userService的get、set方法
//声明式事务管理
    @Transactional(propagation=Propagation.REQUIRED)
    public String login() throws Exception {
        // TODO Auto-generated method stub
        if(userService.isExists(user.getUsername(),user.getPassword()))
            return "success";
        else{
            addActionError("用户名或密码错误！");
            return Action.INPUT;
        }
    }
}

8.spring的配置文件applicationContext.xml配置dao类，service类以及控制器类Action

spring的配置中整合了hibernate数据库配置和Struts中Action配置

<?xml version="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"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx"
 8     
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
    http://www.springframework.org/schema/tx 
    http://www.springframework.org/schema/tx/spring-tx.xsd
    http://www.springframework.org/schema/aop 
    http://www.springframework.org/schema/aop/spring-aop.xsd
    "
    >
    <bean id="sessionFactory"
        class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
        <property name="configLocation"
            value="classpath:hibernate.cfg.xml">
        </property>
    </bean>
    <bean id='userDao' class="com.dao.UserDao">
        <property name="sessionFactory" ref='sessionFactory'/>
    </bean>
    <bean id='userService' class="com.service.UserService">
        <property name="userDao" ref='userDao'/>
    </bean>
    <bean id='transactionManager' 
    class="org.springframework.orm.hibernate3.HibernateTransactionManager">
        <property name="sessionFactory" ref="sessionFactory"/>
    </bean>
    <tx:annotation-driven transaction-manager="transactionManager"/>
    <aop:aspectj-autoproxy proxy-target-class="true"/>
    <!-- 以下bean对应于一个登陆处理的Action -->
    <bean id="login" class="com.control.Login" scope="prototype">
        <property name="userService" ref='userService'/>
    </bean>
</beans>

以上为Login注入了所需要的userService对象,使用scope="prototype"每次访问Action都新建一个实例，在Action中加入声名式事务管理，可以在Action中对Hibernate事务进行自动化管理。

9.struts.xml

<?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>
<constant name="struts.objectFactory" value="spring"/>
    <package name="default" extends="struts-default">
        <action name='login' class="login">
            <result name='success'>/success.jsp</result>
            <result name='input'>/login.jsp</result>
        </action>
    </package>
</struts>   

其中Action的class属性必须与spring配置文件中bean的id值相同
10.测试结果

http://localhost:8080/ssh/login.jsp

输入tazi 123后 和输入tazi 1234后分别如下左右

  

因为数据库中保存的用户名和密码是tazi/1234