maven搭建 struts2+spring+hibernate
本次主要讲解使用maven搭建struts2+spring+hibernate框架。用的struts的版本是2.3.8，spring的版本是3.0.5（由于本人引用的依赖是struts2-spring-plugin，它本身依赖与spring3.0.5以及struts2.3.8，故本人使用了默认依赖，当然如果你想换spring版本的话可以使用maven的exclusion属性去掉spring的依赖，然后再加入你自己想使用的spring版本依赖。但本人不敢保证struts2-spring-plugin与你想使用的spring版本兼容，你可以自己试一下，若可以兼容@我一下，大家共同进步，谢谢），c3p0用的是0.9.1.2，下面开始项目搭建
首先还是先创建一个maven项目，并且编辑pom将要引用的jar包依赖引入。编辑后的pom文件如下
Xml代码
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.qijian</groupId>
<artifactId>SSH</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>SSH Maven Webapp</name>
<url>http://maven.apache.org</url>
<!-- 构件的版本 -->
<properties>
<junit.version>3.8.1</junit.version>
<logback.version>1.1.2</logback.version>
<struts.version>2.3.8</struts.version>
<spring.version>3.0.5.RELEASE</spring.version>
<hibernate.annotations.version>3.5.6-Final</hibernate.annotations.version>
<aspectj.version>1.8.1</aspectj.version>
<c3p0.version>0.9.1.2</c3p0.version>
<mysql.version>5.1.31</mysql.version>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>${logback.version}</version>
</dependency>
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-spring-plugin</artifactId>
<version>${struts.version}</version>
</dependency>
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-json-plugin</artifactId>
<version>${struts.version}</version>
</dependency>
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-convention-plugin</artifactId>
<version>${struts.version}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>${aspectj.version}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>${aspectj.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- 用c3p0连接池去管理数据库连接 -->
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>${c3p0.version}</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-annotations</artifactId>
<version>${hibernate.annotations.version}</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
</dependencies>
<build>
<finalName>SSH</finalName>
</build>
</project>
然后就是配置SSH了，首先编辑web.xml，配置struts2的过滤器
Xml代码
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
<init-param>
<param-name>struts.devMode</param-name>
<param-value>true</param-value>
</init-param>
<init-param>
<param-name>actionPackages</param-name>
<param-value>com.qijian.action</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
其中struts.devMode参数是将struts2的模式调为开发模式以便于调试（其实就是将错误信息打印到页面）；参数actionPackages是指定你的controller的物理位置，注意在你创建controller的时候，其所在的包路径不能有用"controller"以单个词语的形式出现（例如：con.qijian.controller，这个就不行），否则的话会导致请求无法处理，会和struts2起冲突（具体冲突原因不明，未来得及看struts2的源代码）。其整个web.xml文件的源代码如下：
Xml代码
<?xml version="1.0" encoding="UTF-8"?>
<web-app 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_3_0.xsd"
version="3.0" metadata-complete="true">
<display-name>SSH</display-name>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
classpath*:spring*.xml
</param-value>
</context-param>
<filter>
<filter-name>characterEncodingFilter</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>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>characterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
<init-param>
<param-name>struts.devMode</param-name>
<param-value>true</param-value>
</init-param>
<init-param>
<param-name>actionPackages</param-name>
<param-value>com.dou.action</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
参数contextConfigLocation是指定了spring配置文件的位置，跟“maven搭建 springmvc+mybatis应用”一致，本人也将所有配置文件放在了src/main/resources目下,org.springframework.web.context.ContextLoaderListener是在启动web容器时装配spring配置信息。
下面是spring的配置，主要就是启动了注解，其代码如下
Xml代码
<?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:mvc="http://www.springframework.org/schema/mvc"
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-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
<!--扫描项目目录启用注解-->
<context:component-scan base-package="com.qijian"/>
</beans>
然后是hibernate的配置，主要是引入属性文件，配置数据源，配置事物管理，其代码如下：
Xml代码
<?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:mvc="http://www.springframework.org/schema/mvc" 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-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
<!-- 引入数据库属性文件 -->
<context:property-placeholder location="classpath*:config.properties" />
<!--c3p0数据库连接池 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close">
<property name="driverClass" value="${driverClassName}" />
<property name="jdbcUrl" value="${jdbc_url}" />
<property name="user" value="${jdbc_username}" />
<property name="password" value="${jdbc_password}" />
<property name="initialPoolSize" value="1" />
<property name="minPoolSize" value="0" />
<property name="maxPoolSize" value="50" />
<property name="acquireIncrement" value="5" />
<property name="maxIdleTime" value="10" />
<property name="maxStatements" value="0" />
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hiberante.format_sql">true</prop>
<!-- 延迟加载 -->
<prop key="hibernate.cglib.use_reflection_optimizer">true</prop>
<!--是否允许Hibernate用JDBC的可滚动的结果集,对分页时的设置非常有帮助 -->
<prop key="hibernate.jdbc.use_scrollable_resultset">false</prop>
</props>
</property>
<property name="dataSource">
<ref bean="dataSource" />
</property>
<property name="packagesToScan">
<list>
<value>com.dou.dao.po</value>
</list>
</property>
<!-- 设置数据源是否使用事务包装 -->
<property name="useTransactionAwareDataSource">
<value>true</value>
</property>
</bean>
<!-- hibernate事物开始 -->
<bean id="hibernateTransactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory">
<ref local="sessionFactory" />
</property>
</bean>
<!-- 注解式事物 -->
<!-- <tx:annotation-driven transaction-manager="hibernateTransactionManager"/> -->
<!--声明性事物 -->
<tx:advice id="txAdvice" transaction-manager="hibernateTransactionManager">
<tx:attributes>
<tx:method name="store*" propagation="REQUIRED" />
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="save*" propagation="REQUIRED" />
<tx:method name="update*" propagation="REQUIRED" />
<tx:method name="delete*" propagation="REQUIRED" />
</tx:attributes>
</tx:advice>
<aop:config>
<aop:pointcut id="allServiceMethod"
expression="execution(* com.qijian.service.impl.*.*(..))" />
<aop:advisor pointcut-ref="allServiceMethod" advice-ref="txAdvice" />
</aop:config>
<!-- hibernate事物结束 -->
</beans>
这里的事物用的是spring为hibernate提供的HibernateTransactionManager，当然你也可以用spring 的DataSourceTransactionManager管理事物，详情请看“maven搭建 springmvc+mybatis应用”一文。
最后还有一个数据库连接信息的properties文件，主要是连接数据库的用户名密码等，代码如下：
Properties代码
driverClassName=com.mysql.jdbc.Driver
jdbc_url=jdbc:mysql://127.0.0.1:3306/mybatis?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull
jdbc_username=root
jdbc_password=king
到此基本配置就差不多了，然后就可以编写代码跑程序了，祝大家一切顺利