Spring+hibernate集成方式（二）

       第二種集成方案原理：將Struts的Action交給Spring創建，這樣，業務邏輯對象將會被注入，這樣就避免了以來查找。其中代理Action的作用取得BeanFactory，然後到ioc容器中將本次請求對應的Action取出

       當客戶端發送請求時，仍然由web.xml轉到ActionServlet，在這裏，struts-config.xml都將其轉到DelegatingAction中，將取得具體Action對象的操作交給Spring框架來實現。在applicationContext中，由url字符串的不同，將具體的ActionBean創建好。我們在代理Action中，拿到Beanfactory,然後，根據需求取得相應的Action即可。

      部分代碼實現：

web.xml

<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>

  </servlet>

  <!-- Standard Action Servlet Mapping -->

  <servlet-mapping>

    <servlet-name>action</servlet-name>

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

  </servlet-mapping>

  

  <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>

struts-config.xml

<struts-config>

    <form-beans>

        <form-bean name="loginForm" type="com.bjpowernode.usermgr.web.forms.LoginActionForm"/>

    </form-beans>

    <action-mappings>

        <action path="/login"

                type="org.springframework.web.struts.DelegatingActionProxy"

                name="loginForm"

                scope="request"

        >

            <forward name="success" path="/login_success.jsp"/>

        </action>

    </action-mappings>

    <message-resources parameter="MessageResources" />

</struts-config>

LoginActionForm.java

publicclass LoginActionForm extends ActionForm {

    private String username;

    private String password;

    public String getUsername() {

        returnusername;

    }

    publicvoid setUsername(String username) {

        this.username = username;

    }

    public String getPassword() {

        returnpassword;

    }

    publicvoid setPassword(String password) {

        this.password = password;

    }

}

LoginAction.java

publicclass LoginAction extends Action {

    private UserManager userManager;

    @Override

    public ActionForward execute(ActionMapping mapping, ActionForm form,

            HttpServletRequest request, HttpServletResponse response)

            throws Exception {

        LoginActionForm laf = (LoginActionForm)form;

        String username = laf.getUsername();

        String password = laf.getPassword();

        userManager.login(username, password);

        return mapping.findForward("success");

    }

    publicvoid setUserManager(UserManager userManager) {

        this.userManager = userManager;

    }

}

applicationContext.xml

<bean name="/login" class="com.bjpowernode.usermgr.web.actions.LoginAction" scope="prototype">
  <property name="userManager" ref="userManager"/>
 </bean>

<bean id="userManager" class="com.bjpowernode.usermgr.manager.UserManagerImpl"/>