整合目标 | 控制层采用 spring mvc、持久层使用 mybatis 实现
一、整合需要的jar包
spring(包括spring mvc)包、mybatis包、mybatis-spring整合包、数据库驱动包、第三方连接池包
二、整合思路
-
dao 层
- SqlMapConfig.xml,空文件即可,但需要文件头
-
- applicationContext-dao.xml
- a. 数据库连接池
- b. SqlSessionFactory对象,需要spring和mybatis整合包下的。
- c. 配置mapper文件扫描器。
-
service 层
- applicationContext-service.xml包扫描器,扫描@service注解的类。
- applicationContext-trans.xml配置事务。
-
controller 层
-
- Springmvc.xml
- a. 包扫描器,扫描@Controller注解的类。
- b. 配置注解驱动(代替配置处理器映射器和处理器适配器)
- c. 配置视图解析器
-
-
web.xml 文件
- 配置spring容器随项目启动而启动。
- 配置前端控制器。
- 配置过滤器,解决post方式提交乱码问题。
三、整合步骤
1、创建动态web工程并导入必需的jar包
2、加入配置文件
创建资源文件夹config,在其下创建mybatis和spring文件夹, 用来存放配置文件
- SqlMapConfig.xml
使用逆向工程来生成Mapper相关代码,不需要配置别名。在config/mybatis下创建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>
</configuration>
- applicationContext-dao.xml
配置数据源、配置SqlSessionFactory、mapper扫描器。
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.0.xsd http://www.springframework.org/schema/util
http://www.springframework.org/schema/util/spring-util-4.0.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="10" />
<property name="maxIdle" value="5" />
</bean>
<!-- 配置SqlSessionFactory -->
<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>
<!-- 配置Mapper扫描 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 配置Mapper扫描包 -->
<property name="basePackage" value="cn.itcast.ssm.mapper" />
</bean>
</beans>
- db.properties
配置数据库相关信息
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/springmvc?characterEncoding=utf-8
jdbc.username=root
jdbc.password=root
- applicationContext-service.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop-4.0.xsdhttp://www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/utilhttp://www.springframework.org/schema/util/spring-util-4.0.xsd">
<!-- 配置service扫描 -->
<context:component-scan base-package="cn.itcast.ssm.service" />
</beans>
- applicationContext-trans.xml (配置事务)
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop-4.0.xsdhttp://www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/utilhttp://www.springframework.org/schema/util/spring-util-4.0.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:method name="query*" propagation="SUPPORTS" read-only="true" />
</tx:attributes>
</tx:advice>
<!-- 切面 -->
<aop:config>
<aop:advisor advice-ref="txAdvice"
pointcut="execution(* cn.itcast.ssm.service.*.*(..))" />
</aop:config>
</beans>
- springmvc.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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/mvchttp://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
http://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-4.0.xsd">
<!-- 配置controller扫描包 -->
<context:component-scan base-package="cn.itcast.ssm.controller" />
<!-- 注解驱动 -->
<mvc:annotation-driven />
<!-- Example: prefix="/WEB-INF/jsp/", suffix=".jsp", viewname="test" ->
"/WEB-INF/jsp/test.jsp" -->
<!-- 配置视图解析器 -->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- 配置逻辑视图的前缀 -->
<property name="prefix" value="/WEB-INF/jsp/" />
<!-- 配置逻辑视图的后缀 -->
<property name="suffix" value=".jsp" />
</bean>
</beans>
- web.xml
<?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"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaeehttp://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID" version="2.5">
<display-name>springmvc-web</display-name>
<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>
<!-- 配置spring -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/applicationContext*.xml</param-value>
</context-param>
<!-- 使用监听器加载Spring配置文件 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 配置SrpingMVC的前端控制器 -->
<servlet>
<servlet-name>springmvc-web</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/springmvc.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>springmvc-web</servlet-name>
<!-- 配置所有以action结尾的请求进入SpringMVC -->
<url-pattern>*.action</url-pattern>
</servlet-mapping>
</web-app>
-
导入静态页面与资源
配置完工程目录如下:
仅供参考
-
demo 示例
-
需求
- 实现商品查询列表,从mysql数据库查询商品信息。
-
dao 层开发
- 使用 mybatis 逆向工程生成代码,参考 逆向工程
-
service 层开发
- 接口
public interface ItemService { /** * 查询商品列表 * @return */ List<Item> queryItemList(); }
- 实现类
@Service public class ItemServiceImpl implements ItemService { @Autowired private ItemMapper itemMapper; @Override public List<Item> queryItemList() { // 从数据库查询商品数据 List<Item> list = this.itemMapper.selectByExample(null); return list; } }
-
controller 层开发
@Controller public class ItemController { @Autowired private ItemService itemService; /** * 显示商品列表 * @return */ @RequestMapping("/itemList") public ModelAndView queryItemList() { // 获取商品数据 List<Item> list = this.itemService.queryItemList(); ModelAndView modelAndView = new ModelAndView(); // 把商品数据放到模型中 modelAndView.addObject("itemList", list); // 设置逻辑视图 modelAndView.setViewName("itemList"); return modelAndView; } }
測試
浏览器访问:http://127.0.0.1:8080/springmvc-web/itemList.action
-