SSH框架的搭建

之前自己跟着大神们，把Spring MVC+Spring+Mybatis框架搭好了，觉得SSM框架挺好用的，方便、快捷开发。但是出来工作后，看到SSH才是必不可少的框架，不仅要会，还要非常熟练，

因为SSH框架是很多系统开发的最基础的框架。但是我以前却忘了巩固基础，今天突然心血来潮，也想自己搭建一个SSH框架来用用，进一步深入了解SSH框架。

首先要下载好搭建SSH框架需要的jar包：

 1.Spring所需jar包 

2.Struts2所需jar包（由于struts2.3.32以前的版本已出现多种漏洞，建议还是用较新的版本，以免日后还要填补漏洞，不断修改jar包）

  

3.Hibernate所需jar包

 将这些jar包都导入到WEB-INF/lib下后就可以开始写配置文件了

（1）首先是web.xml的配置

 1 <!-- 配置Spring的ContextLoaderListener监听器 -->

<listener>

<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>

<!-- session监听器 用于监听session，当session销毁时，把用户名从session列表中移除-->
<listener>
<listener-class>cn.mym.basic.listener.MyHttpSessionListener</listener-class>
</listener>

12 <!-- 配置Spring的OpenSessionInViewFilter过滤器，以解决Hibernate的懒加载异常（LazyInitializationException） -->
<filter>
<filter-name>OpenSessionInViewFilter</filter-name>
<filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>OpenSessionInViewFilter</filter-name>
<url-pattern>*.action</url-pattern>
</filter-mapping>
21 <!-- 配置Struts2的过滤器 -->
<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>

 配置好web.xml后，开始分别配置spring、struts、hibernate

（1）spring的配置applicationContext.xml文件

<?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:context="http://www.springframework.org/schema/context"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
                http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
                http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
    <!-- 自动扫描与装配bean -->
    <context:component-scan base-package="cn.mym"></context:component-scan>
    <!-- Kaptcha验证码 -->
    <bean id="captchaProducer" class="com.google.code.kaptcha.impl.DefaultKaptcha">
        <property name="config">
            <bean class="com.google.code.kaptcha.util.Config">
                <constructor-arg>
                    <props>
                        <prop key="kaptcha.border">yes</prop>
                        <prop key="kaptcha.border.color">150,150,150</prop>
                        <prop key="kaptcha.textproducer.font.color">red</prop>
                        <prop key="kaptcha.textproducer.font.size">22</prop>
                        <prop key="kaptcha.image.width">70</prop>
                        <prop key="kaptcha.image.height">24</prop>
                        <prop key="kaptcha.textproducer.char.string">1234567890</prop>
                        <prop key="kaptcha.textproducer.char.length">4</prop>
                        <prop key="kaptcha.textproducer.font.names">新宋体</prop>
                        <prop key="kaptcha.background.clear.from">white</prop>
                        <prop key="kaptcha.noise.impl">com.google.code.kaptcha.impl.NoNoise</prop>
                        <prop key="kaptcha.obscurificator.impl">com.google.code.kaptcha.impl.ShadowGimpy</prop>
                    </props>
                </constructor-arg>
            </bean>
        </property>
    </bean>
    <!-- 配置SessionFactory（与Hibernate整合） -->
    <!-- 引入配置文件 -->
    <bean id="propertyConfigurer" class="cn.mym.basic.cfg.SpringPropertyPlaceholderConfigurer">
       <property name="locations">  
          <list>  
                <value>classpath:jdbc.properties</value>  
          </list>
        </property>  
    </bean>
    <!--  <context:property-placeholder location="classpath:jdbc.properties" />  -->
    <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean" destroy-method="close">
        <!-- 指定Hibernate的配置文件的位置 -->
        <property name="configLocation" value="classpath:hibernate.cfg.xml"></property>
        <!-- 配置DataSource -->
        <property name="dataSource">
            <bean class="com.mchange.v2.c3p0.ComboPooledDataSource">
                <!-- 数据库连接信息 -->
                <property name="jdbcUrl" value="${jdbcUrl}"></property>
                <property name="driverClass" value="${driverClass}"></property>
                <property name="user" value="${username}"></property>
                <property name="password" value="${password}"></property>
                <!-- 其他一些配置 -->
                <property name="initialPoolSize" value="${initialPoolSize}"></property>
                <property name="minPoolSize" value="${minPoolSize}"></property>
                <property name="maxPoolSize" value="${maxPoolSize}"></property>
                <property name="acquireIncrement" value="${acquireIncrement}"></property>
                <property name="maxStatements" value="${maxStatements}"></property>
                <property name="maxStatementsPerConnection" value="${maxStatementsPerConnection}"></property>
                <property name="maxIdleTime" value="${maxIdleTime}"></property>
            </bean>
        </property>
    </bean>
    <!-- 配置声明式事务，使用基于注解的方式 -->
    <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
        <property name="sessionFactory" ref="sessionFactory"></property>
    </bean>
    <tx:annotation-driven transaction-manager="transactionManager"/>
</beans>

（1）struts的配置struts.xml文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
    <!-- 设定为开发模式 -->
    <constant name="struts.devMode" value="false" />
    <!-- 指定action的后缀 -->
    <constant name="struts.action.extension" value="action" />
    <!-- 指定主题为simple -->
    <constant name="struts.ui.theme" value="simple" />

    <package name="default" namespace="/" extends="struts-default,jasperreports-default">
        <!-- 全局的result配置 -->
        <!-- 配置拦截器 -->
        <interceptors>
            <!-- 声明拦截器 -->
            <interceptor name="checkPrivilege" class="cn.mym.basic.interceptor.CheckPrivilegeInterceptor"></interceptor>
            <!-- 声明拦截器栈 -->
            <interceptor-stack name="myStack">
                <interceptor-ref name="checkPrivilege" />
                <interceptor-ref name="defaultStack" />
            </interceptor-stack>
        </interceptors>  
        <!-- 默认本包中的所有action都要经过myStack这个拦截器栈 -->
        <default-interceptor-ref name="myStack"></default-interceptor-ref>       
        <!-- 全局的result配置 -->
        <global-results>
            <result name="loginUI">/WEB-INF/jsp/loginLogoutAction/loginUI.jsp</result>
            <result name="index">/WEB-INF/jsp/indexAction/index.jsp</result>
            <result name="privilegeError">/privilegeError.jsp</result>
            <result name="error" >/error.jsp</result>
        </global-results>  
        <!-- 全局错误跳转 -->
        <global-exception-mappings>
            <exception-mapping exception="java.lang.NullPointerException" result="error" />
            <exception-mapping exception="java.lang.Exception" result="error" />
        </global-exception-mappings>

        <!-- Struts2与Spring整合后，class属性中写的是bean的名称 -->
        <action name="testAction" class="testAction">
            <result name="success">/test.jsp</result>
        </action>
        <!-- 岗位管理 -->
        <action name="roleAction_*" class="roleAction" method="{1}">
            <result name="list">/WEB-INF/jsp/roleAction/list.jsp</result>
            <result name="saveUI">/WEB-INF/jsp/roleAction/saveUI.jsp</result>
            <result name="setPrivilegeUI">/WEB-INF/jsp/roleAction/setPrivilegeUI.jsp</result>
            <result name="toList" type="redirectAction">roleAction_list</result>
        </action>

</package>

</struts>

(3)hibernate的配置hibernate.cfg.xml

<!DOCTYPE hibernate-configuration PUBLIC
    "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
<session-factory>
    <!-- 数据库信息 -->
    <property name="dialect">
        org.hibernate.dialect.MySQL5InnoDBDialect
    </property>
    <!-- 其他配置 -->
    <property name="show_sql">true</property>
    <property name="hbm2ddl.auto">update</property>
    <!-- 开启二级缓存.  -->
    <property name="hibernate.cache.use_second_level_cache">
        true
    </property>
    <!-- 指定二级缓存提供商  EhCacheProvider:此类仅仅是一个缓存的加载类.  -->
    <property name="hibernate.cache.provider_class">
        org.hibernate.cache.EhCacheProvider
    </property>
    <!-- 启用查询缓存 -->
    <property name="cache.use_query_cache">true</property>
    <!-- 声明映射文件 -->
    <!-- 基本模块 -->
    <mapping resource="cn/mym/basic/domain/User.hbm.xml" />
    <!-- 招生及收费管理系统模块 -->
    <mapping resource="cn/mym/scms/domain/Secondary.hbm.xml" />
    <mapping resource="cn/mym/scms/domain/SecondaryCheck.hbm.xml" />
    <class-cache usage="read-write"
        class="cn.mym.basic.domain.CodeType" />
</session-factory>
</hibernate-configuration>

session监听类

public class MyHttpSessionListener implements HttpSessionListener{

    public void sessionCreated(HttpSessionEvent se) {//创建session       
    }
    @SuppressWarnings("unchecked")//当session销毁时，移除登录名
    public void sessionDestroyed(HttpSessionEvent se) {
        User user = (User) se.getSession().getAttribute("user");
        Map<String,Object> userMap = (Map<String, Object>) se.getSession().getServletContext().getAttribute("userMap");
        if(user!=null){
            if(userMap.get(user.getLoginName())!=null){
                userMap.remove(user.getLoginName());
            }
        }
    }
}

引入配置jdbc配置文件jdbc.properties的SpringPropertyPlaceholderConfigurer类

public class SpringPropertyPlaceholderConfigurer extends PropertyPlaceholderConfigurer {
protected void processProperties(ConfigurableListableBeanFactory beanFactoryToProcess, Properties props)
throws BeansException
{
String password = (String)props.get("password");
if (password != null)
props.setProperty("password", SecurityUtils.decryptAES(password));

super.processProperties(beanFactoryToProcess, props);
}
}