struts2+spring+mybatis 整合小案例

Posted 2021-04-16 泉城IT圈子

最近学习ssm框架,模仿别人做了一个小案例 
当然途中也遇到了蛮多的问题.借此机会.记录一下自己的过程

struts2+spring+mybatis的整合过程

1.说明:

• 个人采用的是deepin操作系统(深度linux)+Intellij Idea(相对与myeclipse我还是更喜欢idea 可能因为更智能)+tomcat7.

• 当然在windows下没什么不同,具体操作过程很相似.

2.案例环境搭建 
注:项目结构图 

2.1准备工作

     - 新建idea项目     - 在web/web-inf下新建classes目录和lib     - 导入jar包到lib目录下     - 为module添加dependences     - 具体操作步骤参见我的博客blog.csdn.net/jsu_9207/ar…

2.2 配置xml文件

<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="xmlns.jcp.org/xml/ns/java…"         xmlns:xsi="www.w3.org/2001/XMLSch…"         xsi:schemaLocation="xmlns.jcp.org/xml/ns/java… xmlns.jcp.org/xml/ns/java…"         version="3.1">    <!--spring 配置-->    <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 配置-->    <filter>        <filter-name>struts2</filter-name>        <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>    </filter>    <filter-mapping>        <filter-name>struts2</filter-name>        <url-pattern>/*</url-pattern>    </filter-mapping> </web-app>

2.3 实体类编写

public class User {    private int id;    private String name;    private int age;    //省略geter和setter方法以及 构造方法

2.4 userMapper.xml编写

<?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="com.engle.vo.UserMapper">    <insert id="insertOne" parameterType="user">        INSERT INTO user(name,age) VALUES (#{name},#{age})    </insert>    <select id="selectOne" parameterType="int" resultType="user">        SELECT * FROM user WHERE id=#{id}    </select> </mapper>

2.5 dao层编写(userdao和userdaoimpl)

public interface UserDao {    User SelectOne(int id); } public class UserDaoImpl extends SqlSessionDaoSupport implements UserDao {    public User SelectOne(int id) {        String statement = "com.engle.vo.UserMapper.selectOne";       return getSqlSession().selectOne(statement,1);    } }

2.6 utils层

public class MybatisUtils {    public static UserDao getUserDao(){        ApplicationContext context = new ClassPathXmlApplicationContext("ApplicationContext.xml");        return (UserDao) context.getBean("userDao");    } }

2.7 service层(service及其实现)

public interface UserService {    User selectOne(); } public class UserServiceImpl implements UserService {    private UserDao userDao;    public void setUserDao(UserDao userDao) {        this.userDao = userDao;    }    public User selectOne() {        User user = userDao.SelectOne(1);        return user;    } }

2.8 action层

public class UserAction {    private User user;    private UserService service;    public User getUser() {        return user;    }    public void setUser(User user) {        this.user = user;    }    public UserService getService() {        return service;    }    public void setService(UserService service) {        this.service = service;    }    public String getOneUser() throws Exception {        user = service.selectOne();        System.out.println(user);        return "success";    } }

2.9 applicationContext.xml配置

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="www.springframework.org/schema/bean…"       xmlns:xsi="www.w3.org/2001/XMLSch…"       xmlns:aop="www.springframework.org/schema/aop"       xmlns:tx="www.springframework.org/schema/tx"       xsi:schemaLocation="        www.springframework.org/schema/bean…        www.springframework.org/schema/bean…        www.springframework.org/schema/tx        www.springframework.org/schema/tx/s…        www.springframework.org/schema/aop        www.springframework.org/schema/aop/…">    <!--配置通知-->    <tx:advice id="txAdvice" transaction-manager="txManager">        <tx:attributes>            <tx:method name="select*" read-only="true"/>            <tx:method name="insert*" propagation="REQUIRED"/>            <tx:method name="update*" propagation="REQUIRED"/>            <tx:method name="delete*" propagation="REQUIRED"/>        </tx:attributes>    </tx:advice>    <!--切入点-->    <aop:config>        <aop:pointcut id="pointcut" expression="execution(* com.engle.dao.impl.UserDaoImpl.*(..))"/>        <aop:advisor advice-ref="txAdvice" pointcut-ref="pointcut"/>    </aop:config>    <!--数据源配置-->     <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">         <property name="driverClassName" value="com.mysql.jdbc.Driver"/>         <property name="url" value="jdbc:mysql://localhost:3306/spring"/>         <property name="username" value="root"/>         <property name="password" value="root"/>     </bean>    <!--配置sessionFacfory-->    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">        <!--加载dataSource-->        <property name="dataSource" ref="dataSource"/>        <!--加载usermapper.xml-->        <property name="configLocation" value="classpath:mybatis-config.xml"/>    </bean>    <!--userDao容器-->    <bean id="userDao" class="com.engle.dao.impl.UserDaoImpl">        <property name="sqlSessionFactory" ref="sqlSessionFactory"/>    </bean>    <!--userService容器-->    <bean id="userService" class="com.engle.service.impl.UserServiceImpl">        <property name="userDao" ref="userDao"/>    </bean>    <!--userAction容器-->    <bean id="userAction" class="com.engle.action.UserAction">        <property name="service" ref="userService"/>    </bean>    <!--配置事务管理器-->    <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">        <property name="dataSource" ref="dataSource"/>    </bean> </beans>

2.10 mybatis-config.xml配置

<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE configuration  PUBLIC "-//mybatis.org//DTD Config 3.0//EN"  "mybatis.org/dtd/mybatis…"> <configuration>        <typeAliases>                <typeAlias type="com.engle.vo.User" alias="user"/>        </typeAliases>        <mappers>                <mapper resource="com/engle/vo/UserMapper.xml"/>        </mappers> </configuration>

2.11 struts.xml配置

<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE struts PUBLIC        "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"        "struts.apache.org/dtds/struts…"> <struts>    <package name="default" namespace="/" extends="struts-default">        <action name="support" class="userAction" method="getOneUser">            <result>/user.jsp</result>        </action>    </package> </struts>

2.12 user.jsp编写

<%@ page contentType="text/html;charset=UTF-8" language="java" %> <%@taglib prefix="s" uri="/struts-tags" %> <html> <head>    <title>user page</title> </head> <body align="center"> <s:property  value="user.toString()"/> </body> </html>

3.运行结果( 请求 http://localhost:8080/project-name/support)

User{id=1, name=’zhansan’, age=’14’}