一、框架概述
spring+Struts2+hibernate(SSH)整合框架是一种非常典型与实用的Web项目MVC架构,其中:
Spring主要通过控制反转(IOC)与依赖注入(DI)控制对象的创建与维护(概念详解可参看博客IOC与DI),与实现面向切片编程(AOP),核心配置文件为:applicationContext.xml。
Struts2是MVC的Controller控制器,主要控制请求与对应业务逻辑、视图的对应关系,核心配置文件为:struts.xml。
Hibernate是持久层框架,主要用于与数据库交互,它的优势在于它把实体类与数据库表建立了映射关系,在进行数据库操作时省去了繁琐的sql语句的构造过程与结果集的配置,使编程者可以以面向对象的思路来方便的进行编程,核心配置文件为:hibernate.cfg.xml与*.hbm.xml。
二、项目包结构
三、实体层(com.mstf.bean)
Javabean的基本构成,包括与数据库表列名对应的私有成员变量,有参与无参的构造方法,成员变量对应的get、set方法,很简单,在此不再赘述。本例中包括User类(用于登录)与Info类(用于增删改查测试)。
四、JUnit测试类(com.mstf.test)
用于测试数据库操作是否正确,以TestUser类为例:
- public class TestUser {
-
- ApplicationContext ac = new FileSystemXmlApplicationContext("classpath:applicationContext.xml");
- SessionFactory sessionFactory = (SessionFactory) ac.getBean("sessionFactory");;
- Session session = sessionFactory.openSession();
- Transaction transaction = session.beginTransaction();
-
- @Test
- public void testInsert() throws Exception{
-
- User user = new User("Alin", "123456", 1, 0);
- session.save(user);
- transaction.commit();
- session.close();
- }
-
- @Test
- public void testDelete() throws Exception{
- User user = new User();
- user.setUser_id(3);
- session.delete(user);
- transaction.commit();
- session.close();
- }
-
- @Test
- public void testUpdate() throws Exception{
- User user = new User("rose", "666666", 1, 0);
- user.setUser_id(2);
- session.update(user);
- transaction.commit();
- session.close();
- }
-
- @Test
- public void testSelect1() throws Exception{
-
- Query query = session.createQuery("from User");
- List<User> users = query.list();
- for (User user : users) {
- System.out.println(user.toString());
- }
- }
-
- @Test
- public void testSelect2() throws Exception{
-
- Query query = session.createQuery("select new User(username,age,priority) from User");
- List<User> users = query.list();
- for (User users2 : users) {
- System.out.println(users2.toString());
- }
- }
- }
五、业务层(com.mstf.service服务接口com.mstf.service.impl实现类)
以UserService与UserServiceImpl为例:
- public interface UserService {
- public User loginServce(User user);
- }
- public class UserServiceImpl implements UserService {
-
-
- private SessionFactory sessionFactory;
-
- @Override
- public User loginServce(User user) {
-
- String sql = "from User where username = ? and password = ?";
- @SuppressWarnings("unchecked")
- List<User> list = sessionFactory.getCurrentSession().createQuery(sql)
- .setString(0, user.getUsername())
- .setString(1, user.getPassword()).list();
- if(list != null && list.size() == 1){
-
- return list.get(0);
- }
- return null;
- }
-
- public SessionFactory getSessionFactory() {
- return sessionFactory;
- }
-
- public void setSessionFactory(SessionFactory sessionFactory) {
- this.sessionFactory = sessionFactory;
- }
- }
六、控制层(com.mstf.action)
以UserAction为例:
- public class UserAction extends ActionSupport implements ModelDriven<User>{
-
-
- private User user;
-
- private UserService userService;
-
- private static final long serialVersionUID = 1L;
-
-
- public String login(){
-
- User returnUser = userService.loginServce(user);
- if(returnUser != null){
-
- HttpServletRequest request = ServletActionContext.getRequest();
-
- request.getSession().setAttribute("User", user);
-
- return SUCCESS;
- }
- return ERROR;
- }
-
- public UserService getUserService(){
- return userService;
- }
- public void setUserService(UserService userService){
- this.userService = userService;
- }
-
- @Override
- public User getModel() {
- user = new User();
- return user;
- }
-
- }
七、Spring配置文件核心代码
-
-
- <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
- destroy-method="close">
- <property name="driverClass" value="com.mysql.jdbc.Driver" />
- <property name="jdbcUrl" value="jdbc:mysql:///ssh" />
- <property name="user" value="root" />
- <property name="password" value="" />
-
- <property name="initialPoolSize" value="1" />
-
- <property name="minPoolSize" value="1" />
-
- <property name="maxPoolSize" value="300" />
-
- <property name="maxIdleTime" value="60" />
-
- <property name="acquireIncrement" value="5" />
-
- <property name="idleConnectionTestPeriod" value="60" />
- </bean>
-
-
- <context:component-scan base-package="com.mstf" />
-
-
- <bean id="sessionFactory"
- class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
- <property name="dataSource" ref="dataSource" />
-
- <property name="configLocation" value="classpath:hibernate.cfg.xml"></property>
- </bean>
-
-
-
- <bean id="transactionManager"
- class="org.springframework.orm.hibernate3.HibernateTransactionManager">
- <property name="sessionFactory" ref="sessionFactory" />
- </bean>
-
-
- <tx:advice id="personTransaction" transaction-manager="transactionManager">
- <tx:attributes>
- <tx:method name="get*" read-only="true" propagation="NOT_SUPPORTED" />
- <tx:method name="*" />
- </tx:attributes>
- </tx:advice>
- <aop:config>
- <aop:pointcut expression="execution(* com.mstf.service..*.*(..))"
- id="personPontCut" />
- <aop:advisor advice-ref="personTransaction" pointcut-ref="personPontCut" />
- </aop:config>
-
-
- <bean id="infoServiceImpl" class="com.mstf.service.impl.InfoServiceImpl">
- <property name="sessionFactory" ref="sessionFactory" />
- </bean>
-
-
- <bean id="infoAction" class="com.mstf.action.InfoAction">
- <property name="infoService" ref="infoServiceImpl" />
- </bean>
-
-
- <bean id="userServiceImpl" class="com.mstf.service.impl.UserServiceImpl">
- <property name="sessionFactory" ref="sessionFactory" />
- </bean>
-
-
- <bean id="userAction" class="com.mstf.action.UserAction">
- <property name="userService" ref="userServiceImpl" />
- </bean>
-
- </beans>
八、Hibernate配置文件核心代码
- <hibernate-mapping package="com.mstf.bean">
-
- <class name="Info" table="info">
-
- <id name="id" column="id">
- <generator class="native" />
- </id>
-
- <property name="name" />
- <property name="age" />
- <property name="address" />
- </class>
-
- <class name="User" table="user">
- <id name="user_id" column="user_id">
-
- <generator class="increment" />
- </id>
- <property name="username" column="username"/>
- <property name="password" column="password"/>
- <property name="age" column="age"/>
- <property name="priority" column="priority"/>
- </class>
-
- </hibernate-mapping>
-
- <hibernate-configuration>
- <session-factory>
-
-
- <property name="dialect">
- org.hibernate.dialect.MySQL5Dialect
- </property>
-
- <property name="show_sql">true</property>
-
- <property name="hbm2ddl.auto">update</property>
-
- <mapping resource="com/mstf/bean/Bean.hbm.xml" />
-
- </session-factory>
- </hibernate-configuration>
九、struts2配置文件核心代码
- <struts>
- <package name="default" namespace="/" extends="struts-default">
- <action name="info_*" class="infoAction" method="{1}">
- <result name="list">/userHomepage.jsp</result>
- <result name="addUI">/addUI.jsp</result>
- <result name="updateUI">/updateUI.jsp</result>
- <result name="tolist" type="redirectAction">info_list.action</result>
- </action>
-
- <action name="user_*" class="userAction" method="{1}">
- <result name="success" type="redirectAction">info_list.action</result>
- <result name="error">/error.jsp</result>
- </action>
- </package>
-
- </struts>
十、效果图访问地址:http://localhost:8080/HSS/