springmvc教程系列

springmvc史上最好教程（3）

springmvc史上最好教程（1）

一、整合mybatis

為了更好的學習 springmvc和mybatis整合開發的方法，需要將springmvc和mybatis進行整合。

整合目標：控制層采用springmvc、持久層使用mybatis實現。

1.1需求

實現商品查詢列表，從mysql數據庫查詢商品信息。

1.2jar包

包括：spring（包括springmvc）、mybatis、mybatis-spring整合包、數據庫驅動、第三方連接池。

參考：“mybatis與springmvc整合全部jar包”目錄

1.3Dao

目標：

1、spring管理SqlSessionFactory、mapper

詳細參考mybatis教程與spring整合章節。

1.3.1sqlMapConfig.xml

在classpath下創建mybatis/sqlMapConfig.xml

<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE configurationPUBLIC "-//mybatis.org//DTD Config 3.0//EN""http://mybatis.org/dtd/mybatis-3-config.dtd"><configuration><!—使用自動掃描器時，mapper.xml文件如果和mapper.java接口在一個目錄則此處不用定義mappers --><mappers><package name="com.sihai.ssm.mapper" /></mappers></configuration>

1.3.2applicationContext-dao.xml

配置數據源、事務管理，配置SqlSessionFactory、mapper掃描器。

<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/beanshttp://www.springframework.org/schema/beans/spring-beans-3.2.xsdhttp://www.springframework.org/schema/mvchttp://www.springframework.org/schema/mvc/spring-mvc-3.2.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-3.2.xsdhttp://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop-3.2.xsdhttp://www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx-3.2.xsd "><!-- 加載配置文件 --><context:property-placeholder location="classpath:db.properties"/><!-- 數據庫連接池 --><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><!-- 讓spring管理sqlsessionfactory 使用mybatis和spring整合包中的 --><bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"><!-- 數據庫連接池 --><property name="dataSource" ref="dataSource" /><!-- 加載mybatis的全局配置文件 --><property name="configLocation" value="classpath:mybatis/SqlMapConfig.xml" /></bean><!-- mapper掃描器 --><bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"><property name="basePackage" value="com.sihai.springmvc.mapper"></property><property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/></bean></beans>

1.3.3ItemsMapper.xml

<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE mapperPUBLIC "-//mybatis.org//DTD Mapper 3.0//EN""http://mybatis.org/dtd/mybatis-3-mapper.dtd"><mapper namespace="com.sihai.ssm.mapper.ItemsMapper"><!-- sql片段 --><!-- 商品查詢條件 --><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><!-- 查詢商品信息 --><select id="findItemsList" parameterType="queryVo" resultType="items">select * from items<where><include refid="query_items_where"/></where></select></mapper>

1.3.4ItemsMapper.java

public interface ItemsMapper {//商品列表public List<Items> findItemsList(QueryVo queryVo) throws Exception;}

1.4Service

目標：

1、Service由spring管理

2、spring對Service進行事務控制。

1.4.1applicationContext-service.xml

配置service接口。

1.4.2applicationContext-transaction.xml

配置事務管理器。

<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/beanshttp://www.springframework.org/schema/beans/spring-beans-3.2.xsdhttp://www.springframework.org/schema/mvchttp://www.springframework.org/schema/mvc/spring-mvc-3.2.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-3.2.xsdhttp://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop-3.2.xsdhttp://www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx-3.2.xsd "><!-- 事務管理器 --><bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"><!-- 數據源 --><property name="dataSource" ref="dataSource"/></bean><!-- 通知 --><tx:advice id="txAdvice" transaction-manager="transactionManager"><tx:attributes><!-- 傳播行為 --><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(* com.sihai.springmvc.service.impl.*.*(..))"/></aop:config></beans>

1.4.3OrderService

public interface OrderService {//商品查詢列表public List<Items> findItemsList(QueryVo queryVo)throws Exception;}@Autowiredprivate ItemsMapper itemsMapper;@Overridepublic List<Items> findItemsList(QueryVo queryVo) throws Exception {//查詢商品信息return itemsMapper.findItemsList(queryVo);}}

1.5Action

1.5.1springmvc.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/beanshttp://www.springframework.org/schema/beans/spring-beans-3.2.xsdhttp://www.springframework.org/schema/mvchttp://www.springframework.org/schema/mvc/spring-mvc-3.2.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-3.2.xsdhttp://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop-3.2.xsdhttp://www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx-3.2.xsd "><!-- 掃描controller注解,多個包中間使用半角逗號分隔 --><context:component-scan base-package="com.sihai.ssm.controller"/><!--注解映射器 --><bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/><!--注解適配器 --><bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"/><!-- ViewResolver --><beanclass="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>

1.5.2web.xml

加載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><!-- 加載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><!-- 解決post亂碼 --><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不是必須的， 如果不配置contextConfigLocation， springmvc的配置文件默認在：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>

1.5.3OrderController

@Controllerpublic class OrderController {@Autowiredprivate OrderService orderService;@RequestMapping("/queryItem.action")public ModelAndView queryItem() throws Exception {// 商品列表List<Items> itemsList = orderService.findItemsList(null);// 創建modelAndView準備填充數據、設置視圖ModelAndView modelAndView = new ModelAndView();// 填充數據modelAndView.addObject("itemsList", itemsList);// 視圖modelAndView.setViewName("order/itemsList");return modelAndView;}}

1.6測試

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

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