如何创建一个SSH项目

一、Spring和hibernate集成：
web.xml文件中的
<listener>
org.springframework.web.context.ContextLoaderListener
</listener>
加载<context-param>contextConfigLocation</context-param>指定的文件，默认加载applicationContext.xml.可以自定义，我们一般写成applicationContext-*.xml，

1、其中applicationContext-common.xml文件中配置Hibernate的sessonFactory： <!-- 配置SessionFactory -->
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="configLocation">
<value>classpath:hibernate.cfg.xml</value>
</property>
</bean>
缓缶涂梢约釉豩ibernate.cfg.xml配置文件，这就是spirng和Hibernate的集成

............
<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.url">jdbc:mysql://127.0.0.1/spring_struts_hibernate</property>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.connection.password">bjsxt</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="hibernate.show_sql">true</property>
<property name="hibernate.hbm2ddl.auto">update</property>

</session-factory>
</hibernate-configuration>
..............

此后我们就可以在数据库层程序中通过创建sessionFactory，Configuration config = new Configuration().configure();
sessionFactory = config.buildSessionFactory();
Session session = sessionFactory.openSession();
    Transaction tx = null;
    try {
      tx = session.beginTransaction();
      Account account=(Account)session.get(Account.class,new Long(1));进行数据库的操作；
当然数据库层的类如果继承自HibernateDaoSupport（Spring封装的）可以直接操作；
纾簍his.getHibernateTemplate().save(实例对象);
this.getHibernateTemplate().update(实例对象);

此外：这个applicationContext-common.xml文件中我们还用来配置声明式事务，指定哪些类的那些方法使用事务

2、applicationContext-action.xml主要是将Struts和Spring的集成：

3、applicationContext-bean.xml

二、Struts和Spring的集成配置：

web.xml文件中配置:
..........
<servlet>
  <servlet-name>action</servlet-name>
  <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
  <init-param>
    <param-name>config</param-name>
    <param-value>/WEB-INF/struts-config.xml</param-value>
  </init-param>
  <init-param>
    <param-name>debug</param-name>
    <param-value>2</param-value>
  </init-param>
  <init-param>
    <param-name>detail</param-name>
    <param-value>2</param-value>
  </init-param>
  <load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
  <servlet-name>action</servlet-name>
  <url-pattern>*.do</url-pattern>
</servlet-mapping> 
负责管理我们的请求转向给ActionServlet这个大管家来管理，其中<init-param>中配置有config参数，值为/WEB-INF/struts-config.xml，这是告诉我们到哪里加载Struts配置文件，请求处理转向都是在其中配置的；

趕truts-config.xml文件中配置Action
<action>标签中的type属性需要修改为org.springframework.web.struts.DelegatingActionProxy
DelegatingActionProxy代理类主要是获取BeanFactory,然后根据<action>标签中的path属性值，到spring的IoC容器中查找本次请求的Action，

纾?
<action path="/login"
type="org.springframework.web.struts.DelegatingActionProxy"
name="loginForm"
scope="request"
>
<forward name="success" path="/login_success.jsp"></forward>
</action>

赼pplicationContext-action.xml中有如下配置：
<bean name="/login" class="com.bjsxt.usermgr.web.actions.LoginAction" scope="prototype">
    <property name="userManager" ref="userManager"/>
</bean>
在spring中的配置如下：
    <bean name="/login" class="com.bjsxt.usermgr.web.actions.LoginAction">
     <property name="userManager" ref="userManager"/>
    </bean>
*<bean>标签中必须使用name属性，name属性值必须等于struts-config.xml文件中<action>标签中的path属性值
* 必须注入业务逻辑对象
* 建议将<bean>标签中scope设置为prototype,这样就避免了struts Action的线程安全问题 





一、配置jar包,建议不要建user library，分别找到相应的jar包拷贝到Webroot/lib下即可；


Struts_jar包:
*struts_install\struts-1.2.9-bin\lib下，所有jar包；
*jstl_install\jakarta-taglibs-standard-1.1.2\lib下的 jstl.jar和standard.jar

Hibernate_jar包：
* HIBERNATE_HONE/lib/*.jar；
* HIBERNATE_HOME/hibernate3.jar核心包；
* MySql JDBC数据库驱动；

Spring_jar包:
*spring-framework-2.0\lib\aspectj下：aspectjrt.jar和aspectjweaver.jar;
*spring-framework-2.0\lib\jakarta-commons下：commons-logging.jar;
*spring-framework-2.0\lib\log4j下:log4j-1.2.14.jar;
*spring-framework-2.0\dist下：spring.jar核心包;

二、找到配置相应的配置文件：
1、struts:
*将struts-config.xml文件拷贝到Webroot/WEB-INF下；  
*将MessageResources.properties拷贝到src下；
*在web.xml文件中得开启支持：
<!-- Standard Action Servlet Configuration (with debugging) -->
<servlet>
<servlet-name>action</servlet-name>
<servlet-class>
org.apache.struts.action.ActionServlet
</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>/WEB-INF/struts-config.xml</param-value>
</init-param>
<init-param>
<param-name>debug</param-name>
<param-value>2</param-value>
</init-param>
<init-param>
<param-name>detail</param-name>
<param-value>2</param-value>
</init-param>
<load-on-startup>2</load-on-startup>
</servlet>


<!-- Standard Action Servlet Mapping -->
<servlet-mapping>
<servlet-name>action</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>

2、hibernate:
*拷贝hibernate.cfg.xml文件到src下；
*拷贝log4j.properties文件到src下；
*在实体类的相同包下创建实体类对应的文件，例如：实体类User，对应创建User.hbm.xml；
*对延迟加载的支持得在web.xml中配置：
<filter>
<filter-name>hibernateFilter</filter-name>
<filter-class>
org.springframework.orm.hibernate3.support.OpenSessionInViewFilter
</filter-class>
</filter>
<filter-mapping>
<filter-name>hibernateFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

 
3、spring:
*拷贝applicationContext.xml文件到src下；
*对Spring的支持在得在web.xml中配置：
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:applicationContext.xml</param-value>
</context-param>

<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
备注：以上代码的具体功能参见文档--->


eb.xml文件：
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<welcome-file-list>
  <welcome-file>index.jsp</welcome-file>
</welcome-file-list>

<!-- Standard Action Servlet Configuration (with debugging) -->
<servlet>
<servlet-name>action</servlet-name>
<servlet-class>
org.apache.struts.action.ActionServlet
</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>/WEB-INF/struts-config.xml</param-value>
</init-param>
<init-param>
<param-name>debug</param-name>
<param-value>2</param-value>
</init-param>
<init-param>
<param-name>detail</param-name>
<param-value>2</param-value>
</init-param>
<load-on-startup>2</load-on-startup>
</servlet>


<!-- Standard Action Servlet Mapping -->
<servlet-mapping>
<servlet-name>action</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>

<!—编码-->
<filter>
<filter-name>CharsetEncodingFilter</filter-name>
<filter-class>
com.bjsxt.drp.web.util.CharsetEncodingFilter
</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>GB18030</param-value>
</init-param>
</filter>

<filter-mapping>
<filter-name>CharsetEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

<!—对spring的支持-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:applicationContext-*.xml</param-value>
</context-param>


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

-->
或者改为servlet如下：
<servlet>
<servlet-name> SpringContextServlet </servlet-name>
<servlet-class>
org.springframework.web.context.ContextLoaderServlet
</servlet-class>
<load-on-startup> 1 </load-on-startup>
</servlet>


<!—对hibernate延迟加载的支持-->
<filter>
<filter-name>hibernateFilter</filter-name>
<filter-class>
org.springframework.orm.hibernate3.support.OpenSessionInViewFilter
</filter-class>
</filter>
<filter-mapping>
<filter-name>hibernateFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>


</web-app>