ssm整合流程

ssm整合

为了更好的学习 springmvc和mybatis整合开发的方法，需要将springmvc和mybatis进行整合。

整合目标：控制层采用springmvc、持久层使用mybatis实现。

1.需求

实现商品查询列表，从mysql数据库查询商品信息。

2.jar包

包括：spring（包括springmvc）、mybatis、mybatis-spring整合包、数据库驱动、第三方连接池。

参考：“mybatis与springmvc整合全部jar包”目录

3.Dao

目标：

1、spring管理SqlSessionFactory、mapper

详细参考mybatis教程与spring整合章节。

3.1.db.properties

jdbc.driver=com.mysql.jdbc.Driver

jdbc.url=jdbc:mysql://localhost:3306/mybatis

jdbc.username=XXXX

jdbc.password=XXXX

3.2.log4j.properties

# Global logging configuration，建议开发环境中要用debug

log4j.rootLogger=DEBUG, stdout

# Console output...

log4j.appender.stdout=org.apache.log4j.ConsoleAppender

log4j.appender.stdout.layout=org.apache.log4j.PatternLayout

log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

3.3.sqlMapConfig.xml

在classpath下创建mybatis/sqlMapConfig.xml

<?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>

<!—使用自动扫描器时，mapper.xml文件如果和mapper.java接口在一个目录则此处不用定义mappers -->

<mappers>

<package name="cn.itcast.ssm.mapper" />

</mappers>

</configuration>

3.4.applicationContext-dao.xml

配置数据源、事务管理，配置SqlSessionFactory、mapper扫描器。

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

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

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

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

xsi:schemaLocation="http://www.springframework.org/schema/beans

http://www.springframework.org/schema/beans/spring-beans-3.2.xsd

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

http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd

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

http://www.springframework.org/schema/context/spring-context-3.2.xsd

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

http://www.springframework.org/schema/aop/spring-aop-3.2.xsd

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

http://www.springframework.org/schema/tx/spring-tx-3.2.xsd ">

<!-- 加载配置文件 -->

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

<!-- 数据库连接池 -->

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

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

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

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

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

<property name="maxActive" value="30"/>

<property name="maxIdle" value="5"/>

</bean>

<!-- 让spring管理sqlsessionfactory 使用mybatis和spring整合包中的 -->

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

<!-- 数据库连接池 -->

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

<!-- 加载mybatis的全局配置文件 -->

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

</bean>

<!-- mapper扫描器 -->

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

 <property name="basePackage" value="cn.itcast.springmvc.mapper"></property>

<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>

</bean>

</beans>

3.5.ItemsMapper.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="cn.itcast.ssm.mapper.ItemsMapper">

<!-- sql片段 -->

<!-- 商品查询条件 -->

<sql id="query_items_where">

<if test="items!=null">

<if test="items.name!=null and items.name!=''">

and items.name like '%${items.name}%'

</if>

</if>

</sql>

    

<!-- 查询商品信息 -->

<select id="findItemsList" parameterType="queryVo" resultType="items">

select * from items

<where>

<include refid="query_items_where"/>

</where>

</select>

</mapper>

3.6.ItemsMapper.java

public interface ItemsMapper {

//商品列表

public List<Items> findItemsList(QueryVo queryVo) throws Exception;

}

4.Service

目标：

1、Service由spring管理

2、 spring对Service进行事务控制。

4.1.applicationContext-service.xml

配置service接口。

4.2.applicationContext-transaction.xml

配置事务管理器。

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

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

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

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

xsi:schemaLocation="http://www.springframework.org/schema/beans

http://www.springframework.org/schema/beans/spring-beans-3.2.xsd

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

http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd

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

http://www.springframework.org/schema/context/spring-context-3.2.xsd

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

http://www.springframework.org/schema/aop/spring-aop-3.2.xsd

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

http://www.springframework.org/schema/tx/spring-tx-3.2.xsd ">

<!-- 事务管理器 -->

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

<!-- 数据源 -->

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

</bean>

<!-- 通知 -->

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

  <tx:attributes>

     <!-- 传播行为 -->

    <tx:method name="save*" propagation="REQUIRED"/>

    <tx:method name="insert*" propagation="REQUIRED"/>

    <tx:method name="delete*" propagation="REQUIRED"/>

    <tx:method name="update*" propagation="REQUIRED"/>

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

    <tx:method name="get*" propagation="SUPPORTS" read-only="true"/>

  </tx:attributes>

</tx:advice>

<!-- 切面 -->

<aop:config>

  <aop:advisor advice-ref="txAdvice"

  pointcut="execution(* cn.itcast.springmvc.service.impl.*.*(..))"/>

</aop:config>

</beans>

4.3.OrderService

public interface OrderService {

//商品查询列表

public List<Items> findItemsList(QueryVo queryVo)throws Exception;

}

@Autowired

private ItemsMapper itemsMapper;

@Override

public List<Items> findItemsList(QueryVo queryVo) throws Exception {

//查询商品信息

return itemsMapper.findItemsList(queryVo);

}

}

5.Action

5.1.springmvc.xml

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

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

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

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

xsi:schemaLocation="http://www.springframework.org/schema/beans

http://www.springframework.org/schema/beans/spring-beans-3.2.xsd

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

http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd

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

http://www.springframework.org/schema/context/spring-context-3.2.xsd

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

http://www.springframework.org/schema/aop/spring-aop-3.2.xsd

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

http://www.springframework.org/schema/tx/spring-tx-3.2.xsd ">

<!-- 扫描controller注解,多个包中间使用半角逗号分隔 -->

<context:component-scan base-package="cn.itcast.ssm.controller"/>

<!--注解映射器 -->

<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/>

<!--注解适配器 -->

<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"/>

<!-- ViewResolver -->

<bean

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

<property name="viewClass"

value="org.springframework.web.servlet.view.JstlView" />

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

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

</bean>

</beans>

5.2.web.xml

加载spring容器，配置springmvc前置控制器。

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

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

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

xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"

id="WebApp_ID" version="2.5">

<display-name>springmvc</display-name>

<!-- 加载spring容器 -->

<context-param>

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

<param-value>/WEB-INF/classes/spring/applicationContext.xml,/WEB-INF/classes/spring/applicationContext-*.xml</param-value>

</context-param>

<listener>

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

</listener>

<!-- 解决post乱码 -->

<filter>

<filter-name>CharacterEncodingFilter</filter-name>

<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>

<init-param>

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

<param-value>utf-8</param-value>

</init-param>

</filter>

<filter-mapping>

<filter-name>CharacterEncodingFilter</filter-name>

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

</filter-mapping>

<!-- springmvc的前端控制器 -->

<servlet>

<servlet-name>springmvc</servlet-name>

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

<!-- contextConfigLocation不是必须的， 如果不配置contextConfigLocation， springmvc的配置文件默认在：WEB-INF/servlet的name+"-servlet.xml" -->

<init-param>

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

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

</init-param>

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

</servlet>

<servlet-mapping>

<servlet-name>springmvc</servlet-name>

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

</servlet-mapping>

<welcome-file-list>

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

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

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

<welcome-file>default.html</welcome-file>

<welcome-file>default.htm</welcome-file>

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

</welcome-file-list>

</web-app>

5.3.OrderController

@Controller

public class OrderController {

@Autowired

private OrderService orderService;

@RequestMapping("/queryItem.action")

public ModelAndView queryItem() throws Exception {

// 商品列表

List<Items> itemsList = orderService.findItemsList(null);

// 创建modelAndView准备填充数据、设置视图

ModelAndView modelAndView = new ModelAndView();

// 填充数据

modelAndView.addObject("itemsList", itemsList);

// 视图

modelAndView.setViewName("order/itemsList");

return modelAndView;

}

}

6.测试

http://localhost:8080/springmvc_mybatis/queryItem.action