SSM整合
整合思路
Spring的IOC特性，所以应该是将别的框架整合到Spring中
前置
准备pom文件（可以分步导入，这里是一次性导入）
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.company</groupId>
<artifactId>ssm</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<name>ssm Maven Webapp</name>
<!-- FIXME change it to the project's website -->
<url>http://www.example.com</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<spring.version>5.0.2.RELEASE</spring.version>
<mysql.version>5.1.6</mysql.version>
<slf4j.version>1.6.6</slf4j.version>
<log4j.version>1.2.12</log4j.version>
<mybatis.version>3.4.5</mybatis.version>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<!--这一个就将spring依赖的核心jar包导得差不多了-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<!--spring整合junit测试-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>
<!--spring管理数据库相关，传递依赖spring-tx-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<!--解析切入AOP表达式等-->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.9.2</version>
</dependency>
<!--标准标签库-->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!--jsp-api会依赖导入servlet-api-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jsp-api</artifactId>
<version>2.0</version>
</dependency>
<!-- log start -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${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 -->
<!--MyBatis-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<!--spring整合MyBatis-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.1</version>
</dependency>
<!--连接池-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.9</version>
</dependency>
<!--数据库连接驱动-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
</dependencies>
<build>
<finalName>ssm</finalName>
<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
<plugins>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>3.1.0</version>
</plugin>
<!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.22.1</version>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>3.2.2</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.5.2</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.8.2</version>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
jdbcConfig.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.username=root
jdbc.password=yourPassword
jdbc.url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=UTF-8
第一步：
配置Spring框架
applicationContext.xml
<!--配置spring注解扫描-->
<context:component-scan base-package="com.company">
<!--Controller的部分交给SpringMVC去扫描-->
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
导好spring的包然后在applicationContext.xml中配置注解扫描，就算是配置好Spring框架了，动手测试一下，写个Service，配上@Service("accountService")注解，findAll方法打印一句话验证有运行就可以了
@Test
public void testService(){
ApplicationContext ac=new ClassPathXmlApplicationContext("classpath:applicationContext.xml");
AccountService accountService = ac.getBean("accountService", AccountService.class);
accountService.findAll();
}
第二步：
配置SpringMVC框架
导入spring-mvcweb包
web.xml
<!--配置springMVC的前端控制器-->
<servlet>
<servlet-name>dispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springMvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!--配置编码过滤器，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>
springMvc.xml
<!--springMvc的注解扫描,此处有一个巨坑，use-default-filters默认值为true,会扫描所有注入的注解
如果只配置<context:include-filter>则还是表示啥都扫描，会导致事务管理器被SpringMVC管理，而不是Spring
SpringMVC的容器是Spring的子容器，子容器可以访问父容器，父容器不可以访问子容器，有点类似于继承
从软件层面上来说，Spring MVC是展示层可以调用业务层，业务层不能调用展示层。
参考博客：https://www.cnblogs.com/Esummer/p/11791468.html
结果就导致事务控制失败。
<context:include-filter>和use-default-filters="false"配合使用才能达到“只扫描。。。”的目的
-->
<context:component-scan base-package="com.company" use-default-filters="false">
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"></context:include-filter>
</context:component-scan>
<!--配置视图解析器-->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/pages/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
<!--配置放行静态资源,可配置多个-->
<mvc:resources mapping="/js/**" location="/js/"></mvc:resources>
<!--开启springMVC注解的支持-->
<mvc:annotation-driven/>
这时候就可以写一个Controller类打上Controller注解，并配置好@RequestMapping访问路径，就可以配置tomcat访问一下试试，看SpringMVC是否工作正常
第三步：
整合Spring和SpringMVC框架
web.xml添加内容，我的applicationContext.xml在resources目录下
<!--整合Spring，使用ServletContextListener,此时只会加载/WEB-INF/applicationContext.xml文件-->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!--Spring配置文件在其他地方需要配置-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
整合完毕，此时可以在Controller代码里注入Service对象，并调用Service中的方法。启动Tomcat访问Controller中的方法，看Service中的方法是否也被调用了。
第四步：
配置MyBatis框架
确定MyBatis的包导入后
SqlMapConfig.xml,当和Spring框架整合完毕，这个配置文件就不再需要了
<?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>
<!--加载jdbc配置文件-->
<properties resource="jdbcConfig.properties"></properties>
<!--为实体类起别名-->
<typeAliases>
<package name="com.company.entity"></package>
</typeAliases>
<!--配置环境-->
<environments default="mysql">
<environment id="mysql">
<transactionManager type="JDBC"></transactionManager>
<dataSource type="POOLED">
<property name="driver" value="${jdbc.driver}"></property>
<property name="url" value="${jdbc.url}"></property>
<property name="username" value="${jdbc.username}"></property>
<property name="password" value="${jdbc.password}"></property>
</dataSource>
</environment>
</environments>
<!--设置接口扫描包-->
<mappers>
<package name="com.company.dao"></package>
</mappers>
</configuration>
我习惯XML配置映射的方式写Sql，也可以用注解的方式。在resources文件夹创建与Dao接口所在包相同结构的文件夹，并创建同名的xml文件
com/company/dao/AccountDao.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="com.company.dao.AccountDao">
<select id="findAll" resultType="account">
SELECT * FROM account
</select>
<update id="save" parameterType="account">
INSERT INTO account (name,money) VALUES (#{name},#{money})
</update>
</mapper>
测试一把
@Test
public void testMyBatis() throws IOException {
InputStream in = Resources.getResourceAsStream("sqlMapConfig.xml");
SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(in);
SqlSession sqlSession = factory.openSession();
AccountDao accountDao = sqlSession.getMapper(AccountDao.class);
// List<Account> list = accountDao.findAll();
// for (Account account : list) {
// System.out.println(account);
// }
Account account=new Account();
account.setName("ddd");
account.setMoney(666d);
accountDao.save(account);
//注意此处需要手动commit
sqlSession.commit();
in.close();
sqlSession.close();
}
第五步：
Spring整合MyBatis框架
确认mybatis-spring包有正常导入
applicationContext.xml添加内容，整合部分
<!--引入jdbc配置文件-->
<context:property-placeholder location="classpath:jdbcConfig.properties"/>
<!--整合MyBaties↓-->
<!--1.准备连接池-->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="driverClassName" value="${jdbc.driver}"></property>
<property name="url" value="${jdbc.url}"></property>
<property name="username" value="${jdbc.username}"></property>
<property name="password" value="${jdbc.password}"></property>
</bean>
<!--2.配置MyBatis的SQLSession工厂-->
<bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<!--配置实体类别名，多个包在value值中使用“;”进行分隔-->
<property name="typeAliasesPackage" value="com.company.entity"></property>
</bean>
<!--3.配置myBatis扫描的包-->
<bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.company.dao"></property>
</bean>
<!--整合MyBaties↑-->
applicationContext.xml添加内容，事务管理部分
<!--事务控制↓-->
<!--事务管理器-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!--切入点配置-->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<!--关于事务属性配置可以参考https://www.cnblogs.com/zou-rong/p/12047768.html-->
<tx:method name="*" propagation="REQUIRED" read-only="false"/>
<tx:method name="find*" propagation="SUPPORTS" read-only="true" />
</tx:attributes>
</tx:advice>
<!--配置事务管理器和切入点增强方法-->
<aop:config>
<aop:pointcut id="pt1" expression="execution(* com.company.service.impl.*.*(..))"></aop:pointcut>
<aop:advisor advice-ref="txAdvice" pointcut-ref="pt1"></aop:advisor>
</aop:config>
<!--事务控制↑-->
此时可以在Dao接口上加上@Repository注解，然后在Service中调用dao的方法，在index.jsp中写一个表单提交，看看是否能保存成功，再在保存后添加一个异常int i=10/0；重新测试能否回滚。
都没有问题就可以删除SqlMapConfig.xml文件了
到此SSM整合完毕。----------------------------------------------------------------------------------------------------------------------
下面贴出完整的整合配置文件
web.xml
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd" >
<web-app>
<display-name>Archetype Created Web Application</display-name>
<!--整合Spring，使用ServletContextListener,此时只会加载/WEB-INF/applicationContext.xml文件-->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!--Spring配置文件在其他地方需要配置-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<!--配置springMVC的前端控制器-->
<servlet>
<servlet-name>dispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springMvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!--配置编码过滤器，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>
applicationContext.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:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
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/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">
<!--引入jdbc配置文件-->
<context:property-placeholder location="classpath:jdbcConfig.properties"/>
<!--配置spring注解扫描-->
<context:component-scan base-package="com.company">
<!--Controller的部分交给SpringMVC去扫描-->
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!--整合MyBaties↓-->
<!--1.准备连接池-->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="driverClassName" value="${jdbc.driver}"></property>
<property name="url" value="${jdbc.url}"></property>
<property name="username" value="${jdbc.username}"></property>
<property name="password" value="${jdbc.password}"></property>
</bean>
<!--2.配置MyBatis的SQLSession工厂-->
<bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<!--配置实体类别名，多个包在value值中使用“;”进行分隔-->
<property name="typeAliasesPackage" value="com.company.entity"></property>
</bean>
<!--3.配置myBatis扫描的包-->
<bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.company.dao"></property>
</bean>
<!--整合MyBaties↑-->
<!--事务控制↓-->
<!--事务管理器-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!--切入点配置-->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="*" propagation="REQUIRED" read-only="false"/>
<tx:method name="find*" propagation="SUPPORTS" read-only="true" />
</tx:attributes>
</tx:advice>
<!--配置事务管理器和切入点增强方法-->
<aop:config>
<aop:pointcut id="pt1" expression="execution(* com.company.service.impl.*.*(..))"></aop:pointcut>
<aop:advisor advice-ref="txAdvice" pointcut-ref="pt1"></aop:advisor>
</aop:config>
<!--事务控制↑-->
</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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
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/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd"><!--springMvc的注解扫描,此处有一个巨坑，use-default-filters默认值为true,会扫描所有注入的注解
如果只配置<context:include-filter>则还是表示啥都扫描，会导致事务管理器被SpringMVC管理，而不是Spring
SpringMVC的容器是Spring的子容器，子容器可以访问父容器，父容器不可以访问子容器，有点类似于继承
从软件层面上来说，Spring MVC是展示层可以调用业务层，业务层不能调用展示层。
参考博客：https://www.cnblogs.com/Esummer/p/11791468.html
结果就导致事务控制失败。
<context:include-filter>和use-default-filters="false"配合使用才能达到“只扫描。。。”的目的
-->
<context:component-scan base-package="com.company" use-default-filters="false">
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"></context:include-filter>
</context:component-scan>
<!--配置视图解析器-->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/pages/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
<!--配置放行静态资源-->
<mvc:resources mapping="/js/**" location="/js/"></mvc:resources>
<!--开启springMVC注解的支持-->
<mvc:annotation-driven/>
</beans>
pom.xml和jdbcConfig.properties都在最开始给出，此处不再赘述，不足之处还请各位看官不吝赐教。
