SSM框架整合
写在前面
在学习了SpringMVC,Spring,Mybatis框架后我们就可以来进行整合了。首先我们要明确,这个整合到底是谁整合谁呢?实际上是通过Spring框架将SpringMVC和Mybatis整合到一起。明确了这个基本概念后,接下来就是整合了。
Spring框架配置
在整合之前,我们要先确保每个单独的框架可以使用。首先我们先导入所有项目所需的jar包:
<properties> <spring.version>5.0.2.RELEASE</spring.version> <slf4j.version>1.6.6</slf4j.version> <log4j.version>1.2.12</log4j.version> <mysql.version>5.1.6</mysql.version> <mybatis.version>3.4.5</mybatis.version> </properties> <dependencies> <!-- spring --> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>1.6.8</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> <scope>compile</scope> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>${mysql.version}</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.5</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>jsp-api</artifactId> <version>2.0</version> <scope>provided</scope> </dependency> <dependency> <groupId>jstl</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <!-- log start --> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>${log4j.version}</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>${slf4j.version}</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>${slf4j.version}</version> </dependency> <!-- log end --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>${mybatis.version}</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.3.0</version> </dependency> <dependency> <groupId>com.mchange</groupId> <artifactId>c3p0</artifactId> <version>0.9.5.2</version> <type>jar</type> <scope>compile</scope> </dependency> </dependencies>
可以看到有很多jar包。
接下来我们先配置Spring框架。
我们要建一个配置文件,如下:
<?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: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.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"> <!-- 开启注解的扫描,希望处理service和dao,controller不需要Spring框架去处理--> <context:component-scan base-package="com.liuge"> <!-- 配置哪些注解不扫描--> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan> </beans>
之后我们把各层结构写好,放一张项目结构图:
对Service层和Dao层都加好注解。
写好之后我们在test中写一个测试类,测试一下Spring框架
@Test public void run1(){ //加载配置文件 ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml"); //获取对象 AccountService as = (AccountService) ac.getBean("accountService"); //调用方法 as.findAll(); }
测试无误,Spring框架配置完成
Spring框架整合SpringMVC
首先我们要在web.xml里配置好SpringMVC的配置:
<web-app> <display-name>Archetype Created Web Application</display-name> <!-- 配置前端控制器 --> <servlet> <servlet-name>dispatcherServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- 加载springmvc.xml配置文件--> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springmvc.xml</param-value> </init-param> <!-- 启动服务器,启动该servlet--> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>dispatcherServlet</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!--解决中文乱码问题 --> <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> </web-app>
配置好后,再配置一下springmvc.xml:
<!-- 开启注解扫描,只扫描Controller注解--> <context:component-scan base-package="com.liuge"> <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan> <!-- 配置视图解析器对象 --> <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/pages/"/> <property name="suffix" value=".jsp"/> </bean> <!-- 过滤静态资源 --> <mvc:resources location="/css/" mapping="/css/**"/> <mvc:resources location="/img/" mapping="/images/**"/> <mvc:resources location="/js/" mapping="/js/**"/> <!-- 开启SpringMVC注解的支持--> <mvc:annotation-driven/>
我们编写一个Controller类然后运行网页试试效果。测试无误后我们开始做整合.
要做整合,我们需要在web.xml中配置:
<!-- 配置Spring的监听器,默认只能加载WEB-INF目录下的applicationContext.xml配置文件--> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- 设置配置文件的路径 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </context-param>
来加载Spring的配置文件.
之后就可以运行试试了。运行网页查看控制台,输出了提示语句即可。
Spring和Mybatis框架整合
我们这里对Mybatis采用注解的方式,不再写xml配置文件了。
之后在Spring的配置文件中配置Mybatis:
<!-- Spring整合Mybatis框架--> <!-- 配置连接池--> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="driverClass" value="com.mysql.jdbc.Driver"/> <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/ssm?serverTimezone=UTC&useUnicode=true&characterEncoding=UTF-8"/> <property name="user" value="root"/> <property name="password" value="abc456"/> </bean> <!-- 配置SqlSessionFactory--> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"/> </bean> <!-- 配置接口(AccountDao)所在的包 --> <bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.liuge.dao"/> </bean> <!-- 配置Spring框架声明式事务管理--> <!-- 配置事务管理器--> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"></property> </bean> <!-- 配置事务通知--> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="find*" read-only="true"/> <tx:method name="*" read-only="false"/> </tx:attributes> </tx:advice> <!-- 配置AOP增强--> <aop:config> <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.liuge.service.impl.*.*(..))"/> </aop:config>
顺带着配置了事务管理。
配置好后,我们测试一下,无误即可。
总结
关于SSM框架的整合到这里也就学的差不多了。接下来准备自己写个小系统试试。等明天8.晚安。
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