Struts2+Spring2.5+Hibernate3.3整合开发

Struts2+Spring2.5+Hibernate3.3整合开发

整合开发时Struts 2、 Hibernate、Spring需要的JAR

struts2-core-2.x.x.jar :Struts 2框架的核心类库

Xwork-core-2.x.x.jar :XWork类库，Struts 2在其上构建

ognl-2.6.x.jar :对象图导航语言（Object Graph Navigation Language），struts2框架通过其读写对象的属性

freemarker-2.3.x.jar :Struts 2的UI标签的模板使用FreeMarker编写

commons-fileupload-1.2.x.jar 文件上传组件，2.1.6版本后需要加入此文件

struts2-spring-plugin-2.x.x.jar ：用于struts2集成Spring的插件

hibernate核心安装包下的(下载路径：http://www.hibernate.org/，点击“Hibernate Core”右边的“Downloads”):

hibernate3.jar

lib/bytecode/cglib/hibernate-cglib-repack-2.1_3.jar

lib/required/*.jar

hibernate 注解安装包下的(下载路径：www.hibernate.org，点击“Hibernate Annotations”右边的“Downloads”):

hibernate-annotations.jar

lib/ejb3-persistence.jar、hibernate-commons-annotations.jar

Hibernate针对JPA的实现包(下载路径：www.hibernate.org，点击“Hibernate Entitymanager”右边的“Downloads”):

hibernate-entitymanager.jar

lib/test/log4j.jar、slf4j-log4j12.jar

Spring安装包下的

dist/spring.jar

lib/c3p0/c3p0-0.9.1.2.jar lib/aspectj/aspectjweaver.jar、aspectjrt.jar lib/cglib/cglib-nodep-2.1_3.jar

lib/j2ee/common-annotations.jar lib/log4j/log4j-1.2.15.jar lib/jakarta-commons/commons-logging.jar

MYSQL数据库驱动jar

Spring的配置模版：

<?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:aop="http://www.springframework.org/schema/aop"

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/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd

http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">

</beans>

第一步在Spring中配置数据源：

<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">

<property name="driverClass" value="org.gjt.mm.mysql.Driver"/>

<property name="jdbcUrl" value="jdbc:mysql://localhost:3306/itcast?useUnicode=true&amp;characterEncoding=UTF-8"/>

<property name="user" value="root"/>

<property name="password" value="123456"/>

<!--初始化时获取的连接数，取值应在minPoolSize与maxPoolSize之间。Default: 3 -->

<property name="initialPoolSize" value="1"/>

<!--连接池中保留的最小连接数。-->

<property name="minPoolSize" value="1"/>

<!--连接池中保留的最大连接数。Default: 15 -->

<property name="maxPoolSize" value="300"/>

<!--最大空闲时间,60秒内未使用则连接被丢弃。若为0则永不丢弃。Default: 0 -->

<property name="maxIdleTime" value="60"/>

<!--当连接池中的连接耗尽的时候c3p0一次同时获取的连接数。Default: 3 -->

<property name="acquireIncrement" value="5"/>

<!--每60秒检查所有连接池中的空闲连接。Default: 0 -->

<property name="idleConnectionTestPeriod" value="60"/>

</bean>

第二步集成进hibernate ：

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

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

<property name="mappingResources">

<list>

<value>cn/itcast/bean/buyer.hbm.xml</value>

</list>

</property>

<property name="hibernateProperties">

<value>

hibernate.dialect=org.hibernate.dialect.MySQL5Dialect

hibernate.hbm2ddl.auto=update

hibernate.show_sql=false

hibernate.format_sql=false

</value>

</property>

</bean>

第三步使用Spring容器管理事务服务：

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

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

</bean>

<!--使用基于注解方式配置事务 -->

<tx:annotation-driven transaction-manager="txManager"/>

配置hibernate实体映射文件buyer.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 package="cn.itcast.bean">

<class name=“Buyer" table=“buyer">

<id name="username" length="20"/>

<property name="password" length="20" not-null="true"/>

<property name="gender" not-null="true" length="5">

<type name="org.hibernate.type.EnumType">

<param name="enumClass">cn.itcast.bean.Gender</param>

<!-- 12为java.sql.Types.VARCHAR常量值，即保存枚举的字面值到数据库。如果不指定type参数，保存枚举的索引值(从0开始)到数据库-->

<param name="type">12</param>

</type>

</property>

</class>

</hibernate-mapping>

在web容器中使用Listener实例化spring容器和配置struts2

<!-- 指定spring的配置文件，默认从web根目录寻找配置文件，我们可以通过spring提供的classpath:前缀指定从类路径下寻找 -->

<context-param>

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

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

</context-param>

<!-- 对Spring容器进行实例化 -->

<listener>

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

</listener>

配置struts2

<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>

struts2的配置文件模版struts.xml如下。常量struts.objectFactory=spring明确指出将由Spring负责创建Action实例。

<?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>

<!-- 默认的视图主题 -->

<constant name="struts.ui.theme" value="simple" />

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

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

<global-results>

<result name="message">/WEB-INF/page/message.jsp</result>

</global-results>

<action name="action_*" class="personList" method="{1}">

<result name="list">/WEB-INF/page/persons.jsp</result> </action>

</package>

</struts>

为了能从spring容器中寻找到Action bean，要求action配置的class属性值和spring中bean的名称相同。

使用spring解决struts2乱码问题。

<filter>

<filter-name>encoding</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>encoding</filter-name>

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

</filter-mapping>

使用spring解决hibernate因session关闭导致的延迟加载例外问题。

<filter>

<filter-name>OpenSessionInViewFilter</filter-name>

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

<init-param>

<!-- 指定org.springframework.orm.hibernate3.LocalSessionFactoryBean在spring配置文件中的名称,默认值为sessionFactory.如果LocalSessionFactoryBean在spring中的名称不是sessionFactory,该参数一定要指定,否则会出现找不到sessionFactory的例外 -->

<param-name>sessionFactoryBeanName</param-name>

<param-value>sessionFactory</param-value>

</init-param>

</filter>

<filter-mapping>

<filter-name>OpenSessionInViewFilter</filter-name>

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

</filter-mapping>

struts2的标签

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>

<%@taglib uri="/struts-tags" prefix="s" %>

<s:form action="action_edit" method="post" namespace="/person">

<s:hidden name="person.id"/>

姓名:<s:textfield name="person.name"/><br>

<input type="submit" value="发送"/>

</s:form>

<s:iterator value="persons" >

<s:property value="id"/>, <s:property value="name"/>

<a href='<s:url action="action_editUI" namespace="/person"><s:param name="person.id" value="id"/></s:url>'>修改</a>

</s:iterator>