springmvc和mybatis整合關鍵配置
阿新 • • 發佈:2019-02-20
springmvc+mybaits的系統架構:
第一步:整合dao層
mybatis和spring整合,通過spring管理mapper介面。
使用mapper的掃描器自動掃描mapper介面在spring中進行註冊。
第二步:整合service層
通過spring管理 service介面。
使用配置方式將service介面配置在spring配置檔案中。
實現事務控制。
第三步:整合springmvc
由於springmvc是spring的模組,不需要整合。
所需要的jar包:
資料庫驅動包:mysql5.1
mybatis的jar包
mybatis和spring整合包
log4j包
dbcp資料庫連線池包
spring3.2所有jar包
jstl包
mybatis配置檔案 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> <!-- 全域性setting配置,根據需要新增 --> <!-- 配置別名 --> <typeAliases> <!-- 批量掃描別名 --> <package name="cn.itcast.ssm.po"/> </typeAliases> <!-- 配置mapper 由於使用spring和mybatis的整合包進行mapper掃描,這裡不需要配置了。 必須遵循:mapper.xml和mapper.java檔案同名且在一個目錄 --> <!-- <mappers> </mappers> --> </configuration>
db.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/mybatis
jdbc.username=root
jdbc.password=
applicationContext-dao.xml
配置:
資料來源
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/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 "> <!-- 載入db.properties檔案中的內容,db.properties檔案中key命名要有一定的特殊規則 --> <context:property-placeholder location="classpath:db.properties" /> <!-- 配置資料來源 ,dbcp --> <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> <!-- sqlSessionFactory --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <!-- 資料庫連線池 --> <property name="dataSource" ref="dataSource" /> <!-- 載入mybatis的全域性配置檔案 --> <property name="configLocation" value="classpath:mybatis/sqlMapConfig.xml" /> </bean> <!-- mapper掃描器 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!-- 掃描包路徑,如果需要掃描多個包,中間使用半形逗號隔開 --> <property name="basePackage" value="cn.itcast.ssm.mapper"></property> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" /> </bean> </beans>
mybatis mapper介面對映檔案 ItemsMapperCustom.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.ItemsMapperCustom" >
<!-- 定義商品查詢的sql片段,就是商品查詢條件 -->
<sql id="query_items_where">
<!-- 使用動態sql,通過if判斷,滿足條件進行sql拼接 -->
<!-- 商品查詢條件通過ItemsQueryVo包裝物件 中itemsCustom屬性傳遞 -->
<if test="itemsCustom!=null">
<if test="itemsCustom.name!=null and itemsCustom.name!=''">
items.name LIKE '%${itemsCustom.name}%'
</if>
</if>
</sql>
<!-- 商品列表查詢 -->
<!-- parameterType傳入包裝物件(包裝了查詢條件)
resultType建議使用擴充套件物件
-->
<select id="findItemsList" parameterType="cn.itcast.ssm.po.ItemsQueryVo"
resultType="cn.itcast.ssm.po.ItemsCustom">
SELECT items.* FROM items
<where>
<include refid="query_items_where"></include>
</where>
</select>
</mapper>
applicationContext-service.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 ">
<!-- 商品管理的service -->
<bean id="itemsService" class="cn.itcast.ssm.service.impl.ItemsServiceImpl"/>
</beans>
事務控制(applicationContext-transaction.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 ">
<!-- 事務管理器
對mybatis操作資料庫事務控制,spring使用jdbc的事務控制類
-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 資料來源
dataSource在applicationContext-dao.xml中配置了
-->
<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="delete*" propagation="REQUIRED"/>
<tx:method name="insert*" 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="select*" propagation="SUPPORTS" read-only="true"/>
</tx:attributes>
</tx:advice>
<!-- aop -->
<aop:config>
<aop:advisor advice-ref="txAdvice" pointcut="execution(* cn.itcast.ssm.service.impl.*.*(..))"/>
</aop:config>
</beans>
springmvc.xml
建立springmvc.xml檔案,配置處理器對映器、介面卡、檢視解析器
<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 ">
<!-- 可以掃描controller、service、...
這裡讓掃描controller,指定controller的包
-->
<context:component-scan base-package="cn.itcast.ssm.controller"></context:component-scan>
<!--註解對映器 -->
<!-- <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/> -->
<!--註解介面卡 -->
<!-- <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"/> -->
<!-- 使用 mvc:annotation-driven代替上邊註解對映器和註解介面卡配置
mvc:annotation-driven預設載入很多的引數繫結方法,
比如json轉換解析器就預設載入了,如果使用mvc:annotation-driven不用配置上邊的RequestMappingHandlerMapping和RequestMappingHandlerAdapter
實際開發時使用mvc:annotation-driven
-->
<mvc:annotation-driven conversion-service="conversionService"></mvc:annotation-driven>
<!-- 檢視解析器
解析jsp解析,預設使用jstl標籤,classpath下的得有jstl的包
-->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- 配置jsp路徑的字首 -->
<property name="prefix" value="/WEB-INF/jsp/"/>
<!-- 配置jsp路徑的字尾 -->
<property name="suffix" value=".jsp"/>
</bean>
<!-- 自定義引數繫結 -->
<bean id="conversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean">
<!-- 轉換器 -->
<property name="converters">
<list>
<!-- 日期型別轉換 -->
<bean class="cn.itcast.ssm.controller.converter.CustomDateConverter"/>
</list>
</property>
</bean>
</beans>
工程的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" 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_mybatis1208</display-name>
<!-- 載入spring容器 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/classes/spring/applicationContext-*.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- springmvc前端控制器 -->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- contextConfigLocation配置springmvc載入的配置檔案(配置處理器對映器、介面卡等等) 如果不配置contextConfigLocation,預設載入的是/WEB-INF/servlet名稱-serlvet.xml(springmvc-servlet.xml) -->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/springmvc.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<!-- 第一種:*.action,訪問以.action結尾 由DispatcherServlet進行解析 第二種:/,所以訪問的地址都由DispatcherServlet進行解析,對於靜態檔案的解析需要配置不讓DispatcherServlet進行解析
使用此種方式可以實現 RESTful風格的url 第三種:/*,這樣配置不對,使用這種配置,最終要轉發到一個jsp頁面時, 仍然會由DispatcherServlet解析jsp地址,不能根據jsp頁面找到handler,會報錯。 -->
<url-pattern>*.action</url-pattern>
</servlet-mapping>
<!-- post亂碼過慮器 -->
<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>
<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>