SSM开发实例（基于spring 3.X）

基于spring 3.X项目开发实例

此示例采用的是：spring MVC+MyBatis+spring的开发架构。

 

1. 导入相关jar包，页面结构如下：

 

后台结构如下图：

 

2. 创建数据表和实体类

public class User {

private Integerid;

private StringuserName;

private Stringpassword;

private Stringtel;

private Stringemail;

//省略get/set

}

 

3. 创建数据访问接口（MyBatis不需要实现类，所以只创建接口即可）

public interface UserMapper {

public List<User> getUserList();

public User getUser(Useruser);

public int insertUser(Useruser);

public int deleteUser(Useruser);

public int updateUser(Useruser);

}

 

4. MyBatis接口映射文件UserMapper.xml

<?xml version="1.0" encoding="UTF-8"?>  

<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"    

"http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="org.project.dao.user.UserMapper">

<!-- getUserList -->

<select id="getUserList" resultType="user" parameterType="user">

select * from user order by id desc

</select>    

 

<!-- getUser -->

<select id="getUser" resultType="user" parameterType="user">

select * from user where username = #{userName} and password = #{password}

    </select>

    

    <!-- insertUser -->

<insert id="insertUser" parameterType="user">

insert into user (username,password,tel,email) values (

#{userName},#{password},#{tel},#{email}

)

</insert>

    

    <!-- deleteUser -->

<delete id="deleteUser" parameterType="user">

delete from user where id = #{id}

</delete>

        

    <!-- updateUser -->

<update id="updateUser" parameterType="user">

update user set password = #{password}, tel = #{tel}, email = #{email}

where id = #{id}

</update>

</mapper>  

 

5. 编写Service接口及实现类

public interface UserService {

/**

 * getUserList

 * @return

 */

public List<User> getUserList();

/**

 * getUser

 * @param user

 * @return user

 */

public User getUser(Useruser);

/**

 * insertUser

 * @param user

 * @return int

 */

public int insertUser(Useruser);

/**

 * deleteUser

 * @param user

 * @return int

 */

public int deleteUser(Useruser);

/**

 * updateUser

 * @param user

 * @return int

 */

public int updateUser(Useruser);

}

 

@Service

public class UserServiceImplimplements UserService {

@Resource

private UserMappermapper;

public int deleteUser(Useruser) {

// TODO Auto-generated method stub

return mapper.deleteUser(user);

}

 

public User getUser(Useruser) {

// TODO Auto-generated method stub

return mapper.getUser(user);

}

 

public List<User> getUserList() {

// TODO Auto-generated method stub

return mapper.getUserList();

}

 

public int insertUser(Useruser) {

// TODO Auto-generated method stub

return mapper.insertUser(user);

}

 

public int updateUser(Useruser) {

// TODO Auto-generated method stub

return mapper.updateUser(user);

}

}

 

6. 编写Controller

@Controller //类似Struts的Action

public class IndexController {

private Loggerloger = Logger.getLogger(IndexController.class);

@Resource

private UserServiceuserService;

@RequestMapping("/index.html")  //请求url地址映射，类似Struts的action-mapping

    public String index() {

loger.debug("IndexController index.userService:" +userService );

        return "index";

    }

@RequestMapping("/register.html")

public String register(){

return "register";

}

@RequestMapping("/exit.html")  //请求url地址映射，类似Struts的action-mapping

    public String exit() {

loger.debug("IndexController exit.");

        return "exit";

    }

@RequestMapping("/login.html")

public String login(){

return "login";

}

@RequestMapping("/loginsuccess.html")  //请求url地址映射，类似Struts的action-mapping

    public ModelAndView  loginsuccess(Useruser) {

loger.debug("IndexController login.username : " +user.getUserName()

+ " --- password:"+user.getPassword());

user =userService.getUser(user);

loger.debug("select username : " +user.getUserName()

+ " --- password:"+user.getPassword());

        return new ModelAndView("loginsuccess");

    }

@RequestMapping("/regsuccess.html")

public ModelAndView regsuccess(Useruser){

 loger.debug("IndexController register.username : " +user.getUserName()

 + "---- password: " +user.getPassword());

  int f =userService.insertUser(user);

  if(f > 0){

   user =userService.getUser(user);

  }

  return new ModelAndView("regsuccess");

}

}

 

7. 编写spring配置文件applicationContext-mybatis.xml

<?xml version="1.0" encoding="UTF-8"?>  

    <beans xmlns="http://www.springframework.org/schema/beans"  

            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  

            xmlns:aop="http://www.springframework.org/schema/aop"  

            xmlns:p="http://www.springframework.org/schema/p"  

            xmlns:tx="http://www.springframework.org/schema/tx"  

            xmlns:context="http://www.springframework.org/schema/context"  

            xsi:schemaLocation="   

                http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.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-3.0.xsd

                http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">  

           

        <!-- Properties文件读取配置，base的properties -->  

        <context:property-placeholder location="classpath:jdbc.properties"/> 

           

        <!-- JNDI获取数据源(使用dbcp连接池) -->  

        <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close" scope="singleton">

    <property name="driverClassName" value="${driverClassName}"/>

    <property name="url" value="${url}"/>

    <property name="username" value="${uname}"/>

    <property name="password" value="${password}"/>

  </bean> 

 

        <!-- enable transaction demarcation with annotations -->  

        <tx:annotation-driven /> 

        

        <!-- (事务管理)transaction manager, use JtaTransactionManager for globaltx -->  

        <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">  

            <property name="dataSource" ref="dataSource" />  

        </bean> 

         

        <!-- define the SqlSessionFactory, notice that configLocation is not needed when you use MapperFactoryBean -->  

        <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">  

            <property name="dataSource" ref="dataSource" />  

            <property name="configLocation" value="classpath:mybatis-config.xml" />  

        </bean> 

<!-- scan for mappers and let them beautowired 

MapperScannerConfigurer Mybatis-Spring会自动为我们注册Mapper对应的MapperFactoryBean对象-->  

<!-- Mapper接口所在包名，Spring会自动查找其下的Mapper -->

        <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">  

            <property name="basePackage" value="org.project.dao" />  

        </bean> 

            

    </beans>  

 

8. spring配置文件springmvc-servlet.xml修改如下：

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xmlns:p="http://www.springframework.org/schema/p"

    xmlns:context="http://www.springframework.org/schema/context"

    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">

<!-- 使spring扫描包下的所有类，让标注spring注解的类生效-->

<context:component-scan base-package="org.project"/>

<!-- 对转向页面的路径解析。prefix：前缀，suffix：后缀-->

<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">

<property name="prefix" value="/WEB-INF/pages/"/>

<property name="suffix" value=".jsp"/>

</bean>

</beans>

 

9. JDBC属性文件 jdbc.properties【注：log4j的配置文件自己去找。】

driverClassName=com.mysql.jdbc.Driver

url=jdbc:mysql://localhost:3306/springmvcdb?useUnicode=true&characterEncoding=UTF-8

uname=root

password=123456

minIdle=10

maxIdle=50

initialSize=5

maxActive=100

maxWait=100

removeAbandonedTimeout=180

removeAbandoned=true

 

10. 修改web.xml配置文件：

<?xml version="1.0" encoding="UTF-8"?>

<web-app version="2.5" 

xmlns="http://java.sun.com/xml/ns/javaee" 

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 

xsi:schemaLocation="http://java.sun.com/xml/ns/javaee

http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

<!-- 指定Spring Bean的配置文件所在目录。默认配置在WEB-INF目录下-->

<context-param>

<param-name>contextConfigLocation</param-name>

<param-value>classpath:applicationContext-*.xml</param-value>

</context-param>

<!-- spring字符编码过滤器start-->

<filter>

<!--① Spring 编码过滤器-->

    <filter-name>encodingFilter</filter-name>

    <filter-class>

        org.springframework.web.filter.CharacterEncodingFilter

    </filter-class>

    <!--② 编码方式  -->

    <init-param> 

        <param-name>encoding</param-name>

        <param-value>UTF-8</param-value>

    </init-param>

    <!--③ 强制进行编码转换-->

    <init-param>

        <param-name>forceEncoding</param-name>

        <param-value>true</param-value>

    </init-param>

    </filter>

    <!-- ② 过滤器的匹配URL -->

    <filter-mapping> 

        <filter-name>encodingFilter</filter-name>

        <url-pattern>/*</url-pattern>

    </filter-mapping>

<!-- spring字符编码过滤器end-->

 

<!-- ====================================== -->

<!-- Spring MVC配置-->

<servlet>

<servlet-name>spring</servlet-name>

<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

<init-param>

<param-name>contextConfigLocation</param-name>

<param-value>classpath:spring-servlet.xml</param-value>

</init-param>

<load-on-startup>1</load-on-startup>

</servlet>

<servlet-mapping>

<servlet-name>spring</servlet-name>

<url-pattern>/</url-pattern>

</servlet-mapping>

 

<!-- ====================================== -->

<!-- Spring配置 -->

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

</listener>

 

<!-- log4j配置start -->

<context-param>

<param-name>log4jConfigLocation</param-name>

<param-value>classpath:log4j.properties</param-value>

</context-param>

<!-- Spring 加载Log4j 的监听-->

<listener>

<listener-class>

org.springframework.web.util.Log4jConfigListener

</listener-class>

</listener>

<!-- log4j配置end -->

  <welcome-file-list>

    <welcome-file>index.jsp</welcome-file>

  </welcome-file-list>

</web-app>

 

11. MyBatis的主配置文件mybatis-config.xml文件

<?xml version="1.0" encoding="UTF-8"?>  

    <!DOCTYPE configuration   

        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"   

        "http://mybatis.org/dtd/mybatis-3-config.dtd">  

    <configuration>  

        <settings>  

            <!-- changes from the defaults -->  

            <setting name="lazyLoadingEnabled" value="false" />  

        </settings>  

       <typeAliases>  

           <!--这里给实体类取别名，方便在mapper配置文件中使用--> 

           <package name="org.project.pojo"/>

       </typeAliases>  

   </configuration>  

 

12. register.jsp

<body> 

    This is  register JSP page. <br>  

   <form action="regsuccess.html" method="post">

     username:<input type="text" name="userName"/><br/>

     password:<input type="text" name="password"/><br/>

     tel: <input type="text" name="tel"/><br/>

     email: <input type="text" name="email"/><br/>

     <input type="submit" value="submit"/><br/>

    </form>

  </body>

 

13. regsuccess.jsp

<body>

    register success! <br>

       <span>

       username：${user.userName}

       password：${user.password}

       tel：${user.tel}

       email： ${user.email}</span>

       <A HREF="login.html">登录</A> <br/>       

  </body>

 

14. login.jsp与loginsuccess.jsp

<body>

    This is my WEB-INF login JSP page. <br>

    <form action="loginsuccess.html" method="post">

     username: <input type="text" name="userName"/><br/>

     password:  <input type="text" name="password"/><br/>

     <input type="submit" value="submit"/><br/>

    </form>

  </body>

<body>

    This is my WEB-INF login JSP page. <br>

    <A HREF="exit.html">退出页面</A> <br/>

    <span>welcome：${user.userName}</span>

  </body>

 

15. 附：Hibernate集成时的配置文件

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 

xmlns:aop="http://www.springframework.org/schema/aop"

xmlns:tx="http://www.springframework.org/schema/tx"

xmlns:context="http://www.springframework.org/schema/context"

xsi:schemaLocation="

http://www.springframework.org/schema/beans

http://www.springframework.org/schema/beans/spring-beans-3.0.xsd

http://www.springframework.org/schema/tx

http://www.springframework.org/schema/tx/spring-tx-3.0.xsd

http://www.springframework.org/schema/aop

http://www.springframework.org/schema/aop/spring-aop-3.0.xsd

  http://www.springframework.org/schema/context   

   http://www.springframework.org/schema/context/spring-context-3.0.xsd

">

<context:component-scan  base-package="com.sxt"/>   

<!-- 支持aop注解-->

<aop:aspectj-autoproxy />

<bean id="dataSource"  

            class="org.apache.commons.dbcp.BasicDataSource">  

            <property name="driverClassName"  

                value="com.mysql.jdbc.Driver">  

            </property>  

            <property name="url" value="jdbc:mysql://localhost:3306/myhib"></property>  

            <property name="username" value="root"></property>  

            <property name="password" value="123456"></property>

    </bean>  

   <bean id="sessionFactory"         class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">  

           <property name="dataSource">  

               <ref bean="dataSource" />  

           </property>

           <property name="hibernateProperties">  

               <props>  

                <!-- key的名字前面都要加hibernate. -->

                   <prop key="hibernate.dialect">  

                       org.hibernate.dialect.MySQLDialect  

                   </prop>  

                   <prop key="hibernate.show_sql">true</prop>

                   <prop key="hibernate.hbm2ddl.auto">update</prop>

               </props>

           </property>

<property name="packagesToScan">

<value>com.sxt.po</value>

</property>

   </bean>  

<bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate" >

<property name="sessionFactory" ref="sessionFactory"></property>

</bean>

 

<!--配置一个JdbcTemplate实例-->  

<bean id="jdbcTemplate"  class="org.springframework.jdbc.core.JdbcTemplate">   

     <property name="dataSource" ref="dataSource"/>   

</bean>  

<!-- 配置事务管理 -->

<bean id="txManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager" >

<property name="sessionFactory" ref="sessionFactory"></property>

</bean>

<tx:annotation-driven transaction-manager="txManager" />

<aop:config> 

<aop:pointcut expression="execution(public * com.sxt.service.impl.*.*(..))" id="businessService"/> 

<aop:advisor advice-ref="txAdvice" pointcut-ref="businessService" /> 

</aop:config> 

<tx:advice id="txAdvice" transaction-manager="txManager" > 

<tx:attributes> 

<tx:method name="find*"  read-only="true" propagation="NOT_SUPPORTED"  /> 

<!-- get开头的方法不需要在事务中运行 。

有些情况是没有必要使用事务的，比如获取数据。开启事务本身对性能是有一定的影响的--> 

<tx:method name="*"/>    <!--其他方法在实务中运行 --> 

</tx:attributes> 

</tx:advice> 

</beans>

 

16. 运行，测试。