Samuel Learning

Struts2+Spring2+Hibernate3.2配置參考

 <!-- Spring-Context Loader -->

    <context-param>

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

        <param-value>classpath*:spring/*.xml</param-value>

    </context-param>

    

     <!-- i18n resource boundle file -->

    <context-param>

        <param-name>javax.servlet.jsp.jstl.fmt.localizationContext</param-name>

        <param-value>i18n/messages</param-value>

    </context-param>

    

    <!-- Character Encoding filter -->

    <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>

    

    <!--Hibernate Open Session in View Filter-->

    <filter>

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

        <filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>

    </filter>

    

    <!-- Struts2 config -->

    <filter>

        <filter-name>struts-cleanup</filter-name>

        <filter-class>org.apache.struts2.dispatcher.ActionContextCleanUp</filter-class>

    </filter>

    <filter>

        <filter-name>struts</filter-name>

        <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>

    </filter>

    

    <filter-mapping>

        <filter-name>encodingFilter</filter-name>

        <url-pattern>*.action</url-pattern>

    </filter-mapping>

    <filter-mapping>

        <filter-name>encodingFilter</filter-name>

        <url-pattern>*.jsp</url-pattern>

    </filter-mapping>

    <filter-mapping>

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

        <url-pattern>*.action</url-pattern>

    </filter-mapping>

   <filter-mapping>

        <filter-name>struts-cleanup</filter-name>

        <url-pattern>/*</url-pattern>

    </filter-mapping>

    <filter-mapping>

        <filter-name>struts</filter-name>

        <url-pattern>/*</url-pattern>

    </filter-mapping>

 

    <!--Spring ApplicationContext Load -->

    <listener>

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

    </listener>

 

    <!-- Spring Introspector Memory leak -->

    <listener>

        <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>

    </listener>

    

    <!-- Support Spring bean in session scope -->

    <listener>

        <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>

    </listener>

對OpenSessionInViewFilter展開： OpenSessionInViewFilter中做了什么事情呢？這里只說結論，具體需要參考Spring源碼 。第一件事情，把Hibernate的Session放入整個web的request周期內，即，web的request結束，session才關閉。第二件事情，獲取到session后，把它的flush mode 設為FlushMode.NEVER，關閉session時，與trasaction中配置做對比，如果transaction不是readonly，就 會把FlushMode.NEVER轉成FlushMode.AUTO，即有了寫權限。否則，就沒有寫權限。參考《使用OpenSessionInView模式時的一個異常問題解決方法》和《Spring+Hibernate中OpenSessionInView模式運用》。

Part 2.數據訪問的Spring配置，3個Bean：

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN 2.0//EN" "http://www.springframework.org/dtd/spring-beans-2.0.dtd">

<beans default-autowire="byName" default-lazy-init="true">

 

    <!-- Data source definition,use Apache DBCP connection pool -->

    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">

        <property name="driverClassName" value="${jdbc.driverClassName}"/>

        <property name="url" value="${jdbc.url}"/>

        <property name="username" value="${jdbc.username}"/>

        <property name="password" value="${jdbc.password}"/>

    </bean>

 

    <!--Hibernate SessionFatory-->

    <bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">

        <property name="dataSource" ref="dataSource"/>

        <property name="annotatedClasses">

            <list>

                <value>com.hscib.pfms.app.model.User</value>

            </list>

        </property>

        <property name="hibernateProperties">

            <props>

                <prop key="hibernate.dialect">${hibernate.dialect}</prop>

                <prop key="hibernate.show_sql">${hibernate.show_sql}</prop>

                <prop key="hibernate.max_fetch_depth">${hibernate.max_fetch_depth}</prop>

                <prop key="hibernate.cache.provider_class">${hibernate.cache.provider_class}</prop>

                <prop key="hibernate.cache.use_query_cache">${hibernate.cache.use_query_cache}</prop>

            </props>

        </property>

    </bean>

    

    <!-- Transaction manager for a single Hibernate SessionFactory -->

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

        <property name="sessionFactory" ref="sessionFactory"/>

    </bean>

</beans>

上面代碼讀過配置文件，配置部分代碼如下：

<!-- Reading configuration file -->

    <bean id="propertyConfigurer"

        class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">

        <property name="locations">

            <list>

                <value>classpath*:config/jdbc.properties</value>

                <value>classpath*:config/hibernate.properties</value>

            </list>

        </property>

    </bean>

關于sessionFactory的配置，如果不用Annotation的話，配置代碼如下：

<!--Hibernate SessionFatory-->

    <bean id="sessionFactory"

    class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">

        <property name="dataSource" ref="dataSource" />

        <property name="mappingDirectoryLocations">

            <list>

                <value>

                    classpath*:/com/staplesnrc/commons/domain/

                </value>

                <value>

                    classpath*:/com/staplesnrc/plugins/security/domain/

                </value>

                <value>

                    classpath*:/com/staplesnrc/plugins/menu/domain/

                </value>

            </list>

        </property>

 

        <property name="hibernateProperties">

            <props>

                <prop key="hibernate.dialect">

                    ${hibernate.dialect}

                </prop>

                <prop key="hibernate.show_sql">

                    ${hibernate.show_sql}

                </prop>

                <prop key="hibernate.max_fetch_depth">

                    ${hibernate.max_fetch_depth}

                </prop>

                <prop key="hibernate.cache.use_query_cache">

                    ${hibernate.cache.use_query_cache}

                </prop>

                <prop key="hibernate.cache.provider_class">

                    ${hibernate.cache.provider_class}

                </prop>

            </props>

        </property>

    </bean>

Part 3. 事務管理的配置：

<!-- Enable @Transactional support -->

<tx:annotation-driven />

 

<!-- Enable @AspectJ support -->

<aop:aspectj-autoproxy />

 

<aop:config proxy-target-class="true">

        <aop:advisor

            pointcut="execution(* com.hscib.pfms.app..*Manager.*(..))"

            advice-ref="txAdvice" />

        <aop:advisor

            pointcut="execution(* com.hscib.pfms.core.dao.*Dao.*(..))"

            advice-ref="txAdvice" />

</aop:config>

 

<!-- Basic Transaction definition,refered by aop -->

<tx:advice id="txAdvice">

        <tx:attributes>

            <tx:method name="get*" read-only="true" />

            <tx:method name="find*" read-only="true" />

            <tx:method name="*" />

        </tx:attributes>

</tx:advice>

上面采用了aspectJ的配置方式，如果用舊的Spring1.2的配置，相關代碼配置如下：

<bean id="baseTxService"

        class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean"

        abstract="true">

        <property name="transactionManager" ref="transactionManager" />

        <property name="proxyTargetClass" value="true"/>

        <property name="transactionAttributes">

        <props>

        <prop key="get*">PROPAGATION_REQUIRED,readOnly</prop>

        <prop key="find*">PROPAGATION_REQUIRED,readOnly</prop>

        <prop key="save*">PROPAGATION_REQUIRED</prop>

        <prop key="update*">PROPAGATION_REQUIRED</prop>

        <prop key="remove*">PROPAGATION_REQUIRED</prop>

        </props>

        </property>

        </bean>

 同樣，下面列出具體Bean的兩種配置，首先支持AspectJ的配置

<bean id="userManager" class="com.hscib.pfms.app.manager.demo.UserManager"/>

下面是Spring1.2的配置

<bean id="userManager" parent="baseTxService">

        <property name="target">

            <bean class="com.hscib.pfms.app.manager.demo.UserManager" />

        </property>

</bean>

Part3 Struts的配置，struts.xml內容

<?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>

    <!-- Constants -->

    <constant name="struts.objectFactory" value="spring" />

    <constant name="struts.i18n.encoding" value="UTF-8" />

    <constant name="struts.custom.i18n.resources" value="i18n/messages" />

 

    <!-- Include Struts defaults -->

    <include file="struts-default.xml" />

 

    <package name="default" extends="struts-default">

        

    </package>

 

    <package name="demo" extends="struts-default" namespace="/demo">

 

        <action name="save" class="userAction" method="save">

            <result type="redirect-action">list</result>

        </action>

 

        <action name="list" class="userAction" method="list">

            <result>/pages/demo/user.jsp</result>

        </action>

        

        <action name="delete" class="userAction" method="delete">

            <result type="redirect-action">list</result>

        </action>

         

        <action name="edit" class="userAction" method="edit">

            <result>/pages/demo/user.jsp</result>

        </action>

    </package>

</struts>

注意：struts.objectFactory采用了Spring的Bean方式創建Action.

下面列出Spring方式配置的Action的配置文件的樣子：

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN 2.0//EN" "http://www.springframework.org/dtd/spring-beans-2.0.dtd">

<beans default-autowire="byName" default-lazy-init="true">

    <bean id="userAction" class="com.hscib.pfms.app.web.demo.UserAction" scope="prototype">

        <property name="userManager" ref="userManager"/>

    </bean>

</beans>

事實上Struts的配置文件有很多種，可以參考官方文檔。

posted on 2007-05-08 17:17 MingIsMe 閱讀(1093) 評論(0)  編輯  收藏 所屬分類: 06 J2EE