三个JAVA文件完成你的MVC应用

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只需要你三个JAVA类和两个配置文件，就可以完成你的MVC应用，我们就做一个示例吧。

本文以一个登录为例。

第一个JAVA文件

/**============================================================
* 版权： Antbee 版权所有 (c) 2002 - 2006
* 文件： com.antbee.sysmanage.login.action.UserAction
* 所含类: UserAction
* 修改记录：
* 日期                作者                内容
* =============================================================
* 2006-8-28            和巍雅             建立文件
* ============================================================*/

package com.antbee.sysmanage.login.action;

import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.DispatchAction;
import org.apache.struts.validator.DynaValidatorForm;
import com.antbee.hibernate.model.AirlineUserInformation;
import com.antbee.sysmanage.login.dao.UserDAO;

/**
* <p>
* </p>
*
* <p>
* Copyright: 版权所有 (c) 2002 - 2006
* </p>
* <p>
* Company: antbee
* </p>
*
* @author @家军
* @version 1.0
*/

public class UserAction extends DispatchAction {
    // 依赖注入
    private UserDAO userDAO;

    public UserDAO getUserDAO() {
        return userDAO;
    }

    public void setUserDAO(UserDAO userDAO) {
        this.userDAO = userDAO;
    }

    /**
     *
     * 用户登录
     *
     * @param
     * @return
     * @throws
     */
    public ActionForward Login(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        HttpSession session = request.getSession();
        DynaValidatorForm LoginActionForm = (DynaValidatorForm) form;
        AirlineUserInformation User = (AirlineUserInformation) LoginActionForm
                .get("User");
        if (User != null) {
            String MDpwd = CommonTools.encrypt(User.getPassword());
            if (userDAO.Login(User.getLoginName(), MDpwd)) {
                // 成功登录
                // 加载一些session
                AirlineUserInformation LegalUser = userDAO.GetUser(User
                        .getLoginName());
                String LoginName = LegalUser.getLoginName();
                String UserName = LegalUser.getUserName();
                String UserId = LegalUser.getUserId().toString();
                String UserType = LegalUser.getUserType().toString();
                String DeptId = LegalUser.getAirlineDepartmentInformation()
                        .getDepartmentId().toString();
                String DeptName = LegalUser.getAirlineDepartmentInformation().getDepartmentName();
                String RoleId = LegalUser.getSysRoleInfo().getRoleId()
                        .toString();
                session.setAttribute("LoginName", LoginName);// 登录名
                session.setAttribute("UserName", UserName);// 用户姓名
                session.setAttribute("UserId", UserId);// 用户ID
                session.setAttribute("DeptId", DeptId);// 部门ID
                session.setAttribute("DeptName", DeptName);// 部门DeptName
                session.setAttribute("UserType", UserType);// 用户类别
                session.setAttribute("RoleId", RoleId);// 角色ID
                return mapping.findForward("Comein");
            }
        }
        request.setAttribute("UserMsg", "User.LawLess");
        return mapping.findForward("Fail");
    }

    /**
     *
     * 用户退出
     *
     * @param
     * @return
     * @throws
     */
    public ActionForward LogOut(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        HttpSession session = request.getSession();
        session.removeAttribute("LoginName");// 登录名
        session.removeAttribute("UserName");// 用户姓名
        session.removeAttribute("UserId");// 用户ID
        session.removeAttribute("DeptId");// 部门ID
        session.removeAttribute("UserType");// 用户类别
        session.removeAttribute("RoleId");// 角色ID
        session.invalidate();// 控件无效
        return mapping.findForward("LogOut");
    }

第二个JAVA文件：

第三个JAVA文件;

两个配置文件，
第一个struts-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd">

<struts-config>
    <data-sources />
    
    <form-beans>
        <form-bean name="LoginActionForm"
            type="org.apache.struts.validator.DynaValidatorForm">
            <form-property name="User"
                type="com.antbee.hibernate.model.AirlineUserInformation" />
        </form-bean>
    </form-beans>
    
    <global-exceptions>
        <exception key="error.required"
            type="org.springframework.dao.DataAccessException"
            path="/dataAccessFailure.jsp" />
    </global-exceptions>
    
    <global-forwards>
        
        <forward name="LoginGo" path="/User.do?method=LogOut"></forward>
        
        <forward name="Fail" path="/jsp/common/failed.jsp"></forward>
    </global-forwards>
    
    <action-mappings>
        <action path="/User"
            type="org.springframework.web.struts.DelegatingActionProxy"
            name="LoginActionForm" scope="request" parameter="method"
            validate="false">
            <forward name="UserMenu" path="/jsp/leftMenu.jsp" />
            <forward name="Comein" path="/jsp/index.jsp" />
            <forward name="LogOut" path="/login.jsp" />
        </action>
    </action-mappings>
    
    <message-resources parameter="resources.ApplicationResources" />
    
    <plug-in
        className="org.springframework.web.struts.ContextLoaderPlugIn">
        <set-property property="contextConfigLocation"
            value="classpath:applicationContext.xml" />
    </plug-in>
    
    <plug-in className="org.apache.struts.validator.ValidatorPlugIn">
        <set-property property="pathnames"
            value="/WEB-INF/validator-rules.xml, /WEB-INF/validation.xml" />
    </plug-in>
</struts-config>

第二个XML文件：
applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">

<beans>

    
    <bean id="SessionFactory"
        class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
        <property name="configLocation">
            <value>classpath:hibernate.cfg.xml</value>
        </property>
        <property name="hibernateProperties">
            <props>
                <prop key="connection.provider_class">
                    org.hibernate.connection.ProxoolConnectionProvider
                </prop>
                <prop key="hibernate.dialect">
                    org.hibernate.dialect.Oracle9Dialect
                </prop>
            </props>
        </property>
    </bean>
    

    
    <bean id="TransactionManager"
        class="org.springframework.orm.hibernate3.HibernateTransactionManager"
        abstract="false" singleton="true" lazy-init="default"
        autowire="default" dependency-check="default">
        <property name="sessionFactory">
            <ref bean="SessionFactory" />
        </property>
    </bean>
    
    
    <bean id="BaseTransactionProxy"
        class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean"
        abstract="true">
        <property name="transactionManager">
            <ref bean="TransactionManager" />
        </property>
        <property name="proxyTargetClass">
            <value>true</value>
        </property>
        <property name="transactionAttributes">
            <props>
                <prop key="save*">PROPAGATION_REQUIRED</prop>
                <prop key="remove*">PROPAGATION_REQUIRED</prop>
                <prop key="*">PROPAGATION_REQUIRED</prop>
            </props>
        </property>
    </bean>
    

    
    <bean id="userDAO"
        class="com.antbee.sysmanage.login.dao.hibernate.UserDAOImpl">
        <property name="sessionFactory">
            <ref local="SessionFactory" />
        </property>
    </bean>
    <bean id="userDAOProxy" parent="BaseTransactionProxy"
        class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
        <property name="target">
            <ref local="userDAO" />
        </property>
    </bean>
    


    
    <bean name="/User"
        class="com.antbee.sysmanage.login.action.UserAction" singleton="false">
        <property name="userDAO">
            <ref bean="userDAOProxy" />
        </property>
    </bean>
    

</beans>

其它的POJO使用myeclise插件就会自动生成。

呵呵是不是开发很简单呢，能够节省你多少的工作量呀，如果有兴趣的同志可以共同探讨。

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