ssh整合之五struts和spring整合

1.首先,我们需要先分析一下,我们的spring容器在web环境中,只需要一份就可以了

另外,就是我们的spring容器,要在我们tomcat启动的时候就创建好了(包括其中的spring的对象),怎么保证我们的spring容器能创建呢?

我们可以配合监听器来创建我们的spring容器,然后我们怎么实现我们的监听器呢?

当ServletContext创建成功,就说明tomcat正常启动了,我们使用监听器监听我们的ServletContext,如果创建成功,加载配置文件,创建spring容器

2.我们先在我们的web.xml中加入我们的监听器

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
  <display-name>ssh_spring</display-name>
 <!--  配置spring的监听器
      加载spring的配置文件,根据配置文件创建我们的spring对象
      默认加载的spring配置文件位置:WEB-INF下的applicationContext.xml 
  -->
  <listener>
      <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <!-- 修改spring默认加载的配置文件的路径 -->
  <context-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:applicationContext.xml</param-value>
  </context-param>
  <filter>
      <filter-name>ssh</filter-name>
      <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
  </filter>
  <filter-mapping>
      <filter-name>ssh</filter-name>
      <url-pattern>/*</url-pattern>
  </filter-mapping>
  
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
</web-app>

3.  在我们的struts中根据容器获取对象

第一种是使用struts的 插件包(这种方式使用的比较少)

第二种是把struts的动作类交给spring进行管理

applicationContext.xml中

<?xml version="1.0" encoding="UTF-8"?>
<!-- spring的配置文件：导入约束 -->
<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.xsd
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/aop 
        http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd
        ">
     
    <!-- 自定义的java对象交给spring进行管理 -->
   <bean id="customerAction" scope="prototype" class="com.itheima.action.CustomerAction">
        <property name="customerService" ref="customerService"></property>
   </bean>
   <bean id="customerService" class="com.itheima.service.impl.CustomerServiceImpl">
           <property name="customerDao" ref="customerDao"></property>
   </bean> 
   <bean id="customerDao" class="com.itheima.dao.impl.CustomerDaoImpl">
           <property name="hibernateTemplate" ref="hibernateTemplate"></property>
   </bean>
   <!--  第三方的jar包中的java对象交给spring进行管理 -->
   <!--  创建一个hibernateTemplate对象 -->
   <bean id="hibernateTemplate" class="org.springframework.orm.hibernate5.HibernateTemplate">
         <!-- 注入sessionFactory -->
         <property name="sessionFactory" ref="sessionFactory"></property>
   </bean>
   <!-- 创建sessionFactory对象 -->
   <!-- 当spring和hibernate整合时,这个sessionFactory的实现类是由spring提供的:LocalSessionFactoryBean,
       创建sessionFactory是根据hibernate的核心配置文件
    -->
   <bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
           <property name="configLocation" value="classpath:hibernate.cfg.xml"></property>
   </bean>  
    <!--配置hibernate的事务管理 -->
   <bean id="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager">
           <property name="sessionFactory" ref="sessionFactory"></property>
   </bean>
   <!-- 配置事务管理通知 -->
   <tx:advice id="txAdvice">
           <tx:attributes>
               <tx:method name="*" propagation="REQUIRED" read-only="false"/>
               <tx:method name="get*" propagation="SUPPORTS" read-only="true"/>
           </tx:attributes>
   </tx:advice>
   <!-- 配置事务的AOP -->
   <aop:config>
           <aop:pointcut expression="execution(* com.itheima.service.impl.*.*(..))" id="pt"/>
           <aop:advisor advice-ref="txAdvice" pointcut-ref="pt"/>
   </aop:config>
</beans>

在struts.xml中配置

<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
    "http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>
    <package name="customer" extends="struts-default" namespace="/customer">
        <!-- 
            1.class: 全限定类名
                反射的请示创建动作类对象
              class：需要修改为容器中动作类的bean的唯一标识
         -->
        <action name="addCustomerUI" class="customerAction" method="addCustomerUI">
            <result name="success">/jsp/customer/add.jsp</result>
        </action>
        <action name="getAllCustomer" class="customerAction" method="getAllCustomer">
            <result name="success">/jsp/customer/list.jsp</result>
        </action>
    </package>
</struts>

我们在CustomerAction中

package com.itheima.action;

import java.util.List;

import com.itheima.entity.Customer;
import com.itheima.service.CustomerService;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;

public class CustomerAction extends ActionSupport implements ModelDriven<Customer> {
    private Customer customer = new Customer();
    
    private CustomerService customerService;
    private List<Customer> customers;
    
    public void setCustomers(List<Customer> customers) {
        this.customers = customers;
    }

    public void setCustomerService(CustomerService customerService) {
        this.customerService = customerService;
    }
    
    public List<Customer> getCustomers() {
        return customers;
    }

    public Customer getModel() {
        return customer;
    }
    
    //进入添加页面
    public String addCustomerUI(){
        return this.SUCCESS;
    }
    //进入列表页面
    public String getAllCustomer(){
        customers = customerService.getAllCustomer();
        return this.SUCCESS;
    } 
    
}

最后.测试我们的结果,访问http://localhost:8080/ssh_spring/

 每天进步一点点,今天就到这儿吧!