1 整合思路

Spring整合MyBatis，将MyBatis的实例交给Spring进行管理

Spring整合AOP声明式事务管理

Spring整合SpringMVC,无需额外配置操作

启动tomcat，加载Spring的配置文件

2 SSM整合依赖

1. 数据库相关
   1. mysql驱动依赖
   2. mybatis依赖
   3. druid连接池
   4. Spring整合Mybatis依赖
   5. Mybatis分页插件依赖
   6. Mybatis分页插件依赖
2. Spring相关
   1. spring的核心依赖
   2. springAOP依赖
   3. spring整合持久层依赖
   4. spring整合单元测试依赖
   5. spring声明式事务依赖
   6. spring织入依赖aspectjweaver
   7. springmvc相关的依赖
   8. JSON交互依赖jackson-databind
3. 文件上传相关依赖
   1. fileupload 文件上传的依赖
   2. 依赖排除
4. servlet依赖
5. jsp依赖
6. jstl依赖3个
   1. jstl
   2. standard
   3. jstl-api
7. lombok的依赖lombok

<dependencies><!--  mybatis相关的依赖  --><!--  mysql驱动依赖      --><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.47</version></dependency><!--  mybatis依赖      --><dependency><groupId>org.mybatis</groupId><artifactId>mybatis</artifactId><version>3.5.4</version></dependency><!--  druid数据源依赖   --><dependency><groupId>com.alibaba</groupId><artifactId>druid</artifactId><version>1.1.10</version></dependency><!--  Spring整合Mybatis依赖   --><dependency><groupId>org.mybatis</groupId><artifactId>mybatis-spring</artifactId><version>1.3.2</version></dependency><!--  Mybatis分页插件依赖   --><dependency><groupId>com.github.pagehelper</groupId><artifactId>pagehelper</artifactId><version>5.1.10</version></dependency><!--  spring相关的依赖  --><!--  spring的核心依赖  --><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>5.3.6</version></dependency><!--  springAOP依赖  --><dependency><groupId>org.springframework</groupId><artifactId>spring-aspects</artifactId><version>5.3.6</version></dependency><!--  spring整合持久层依赖  --><dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId><version>5.3.6</version></dependency><!--  spring整合单元测试依赖  --><dependency><groupId>org.springframework</groupId><artifactId>spring-test</artifactId><version>5.3.6</version></dependency><!--  spring声明式事务依赖  --><dependency><groupId>org.springframework</groupId><artifactId>spring-tx</artifactId><version>5.3.6</version></dependency><dependency><groupId>org.aspectj</groupId><artifactId>aspectjweaver</artifactId><version>1.9.6</version></dependency><!--  springmvc相关的依赖  --><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>5.3.6</version></dependency><dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-databind</artifactId><version>2.12.2</version></dependency><!--   文件上传相关依赖  --><dependency><groupId>commons-io</groupId><artifactId>commons-io</artifactId><version>2.4</version></dependency><!--   fileupload 文件上传的依赖  --><dependency><groupId>commons-fileupload</groupId><artifactId>commons-fileupload</artifactId><version>1.3.3</version><!-- 依赖排除 --><exclusions><exclusion><groupId>javax.servlet</groupId><artifactId>servlet-api</artifactId></exclusion></exclusions></dependency><!-- servlet依赖 --><dependency><groupId>javax.servlet</groupId><artifactId>javax.servlet-api</artifactId><version>3.1.0</version><scope>provided</scope></dependency><!--jsp依赖 --><dependency><groupId>javax.servlet</groupId><artifactId>jsp-api</artifactId><version>2.0</version><scope>provided</scope></dependency><!-- jstl依赖 --><dependency><groupId>javax.servlet.jsp.jstl</groupId><artifactId>jstl</artifactId><version>1.2</version></dependency><dependency><groupId>taglibs</groupId><artifactId>standard</artifactId><version>1.1.2</version></dependency><dependency><groupId>javax.servlet.jsp.jstl</groupId><artifactId>jstl-api</artifactId><version>1.2</version></dependency><!-- lombok的依赖  --><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><version>1.18.12</version></dependency></dependencies>

3 配置文件

3.1 web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"version="4.0"><!-- 配置spring监听器 通过监听器其加载spring的配置文件  --><listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener><context-param><param-name>contextConfigLocation</param-name><param-value>classpath:spring/applicationContext-*.xml</param-value></context-param><!-- 编码过滤器 --><filter><filter-name>encodingFilter</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>encodingFilter</filter-name><url-pattern>/*</url-pattern></filter-mapping><!-- 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:spring/springmvc.xml</param-value></init-param></servlet><servlet-mapping><servlet-name>dispatcherServlet</servlet-name><url-pattern>/</url-pattern></servlet-mapping></web-app>

3.2 springmvc配置

• 开启Spring的注解扫描
• 开启SpringMVC的注解扫描
• 配置视图解析器
• 配置文件上传解析器

<?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 https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd"><!--  开启Spring的注解扫描   --><context:component-scan base-package="com.ying.controller"/><!--  开启SpringMVC的注解扫描   --><mvc:annotation-driven/><!--  配置视图解析器   --><bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"><property name="prefix" value="/pages/"/><property name="suffix" value=".jsp"/></bean><!--  配置文件上传解析器   --><bean class="org.springframework.web.multipart.commons.CommonsMultipartResolver"><property name="maxUploadSize" value="10000000"/><property name="maxUploadSizePerFile" value="2000000"/><property name="defaultEncoding" value="utf-8"/></bean>
</beans>

3.3 spring-service配置

<?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"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd"><!-- 开启spring注解扫描  扫描service层   --><context:component-scan base-package="com.ying"/>
</beans>

3.4 spring-tx配置

<?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:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/txhttps://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop https://www.springframework.org/schema/aop/spring-aop.xsd"><import resource="classpath:spring/applicationContext-dao.xml"/><!-- 配置事务管理器 --><bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"><!-- 加载数据源 --><property name="dataSource"  ref="dataSource"/></bean><!-- 开启AOP事务扫描 -->
<!--    <tx:annotation-driven transaction-manager="transactionManager"/> --><!-- 基于XML配置  --><!-- 配置增强类 --><tx:advice id="myAdvice" transaction-manager="transactionManager"><tx:attributes><tx:method name="select*" isolation="DEFAULT" propagation="SUPPORTS" timeout="-1"/><tx:method name="find*" isolation="DEFAULT" propagation="SUPPORTS" timeout="-1"/><tx:method name="get*" isolation="DEFAULT" propagation="SUPPORTS" timeout="-1"/><tx:method name="query*" isolation="DEFAULT" propagation="SUPPORTS" timeout="-1"/><tx:method name="*" isolation="DEFAULT" propagation="REQUIRED" timeout="-1"/></tx:attributes></tx:advice><!-- 配置切面--><aop:config><aop:pointcut id="pc" expression="execution(* com.ying.service..*.*(..))"/><aop:advisor advice-ref="myAdvice" pointcut-ref="pc"/></aop:config>
</beans>

3.5 spring-dao配置

<?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"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd"><!-- SM整合的配置   --><!-- 引入外部的配置   --><context:property-placeholder location="classpath:mybatis/db.properties"/><!-- 数据源配置   --><bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"><property name="driverClassName" value="${jdbc.driver}"/><property name="url" value="${jdbc.url}"/><property name="username" value="${jdbc.username}"/><property name="password" value="${jdbc.password}"/></bean><!-- 配置SqlSessionFactoryBean  --><bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"><!-- 加载数据源  --><property name="dataSource" ref="dataSource"/><!-- 加载mybatis配置 --><property name="configLocation" value="classpath:mybatis/mybatis-config.xml"/></bean><!-- 配置Mapper扫描  --><bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"><property name="basePackage" value="com.ying.mapper"/></bean></beans>

3.6 mybatis配置

<?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><!-- 配置Mybatis的日志   --><settings><setting name="logImpl" value="STDOUT_LOGGING"/></settings><!--  设置类型别名    --><typeAliases><package name="com.ying.pojo"/></typeAliases><!-- 配置分页插件   --><plugins><!-- 添加分页拦截器查询   --><plugin interceptor="com.github.pagehelper.PageInterceptor"></plugin></plugins>
</configuration>

3.7 数据源配置

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql:///test
jdbc.username=root
jdbc.password=123456

4 Mapper层

4.1 Mapper接口

public interface EmpMapper {List<Emp> getAll();
}

4.2 Mapper映射文件

<mapper namespace="com.ying.mapper.EmpMapper"><select id="getAll" resultType="EmP">select * from emp</select>
</mapper>

5 Service层

@Service
public class EmpServiceImpl implements EmpService {@Autowiredprivate EmpMapper empMapper;@Overridepublic List<Emp> getAll() {return empMapper.getAll();}
}

6 Controller层

@Controller
@RequestMapping("/emp")
public class EmpController {@Autowiredprivate EmpService empService;@RequestMapping("/getAll")public String getAll(Model model){List<Emp> empList = empService.getAll();//empList.forEach(System.out::println);model.addAttribute("empList",empList);return  "empList";}    
}

7 前端JSP

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<html>
<head><title>Title</title>
</head>
<body><table width="80%" align="center" border="1px" cellpadding="10px" cellspacing="0px" bgcolor="#f5f5dc"><tr><th>员工编号</th><th>员工图片</th><th>员工姓名</th><th>员工经理</th><th>员工职位</th><th>入职日期</th><th>员工工资</th><th>员工奖金</th><th>部门编号</th><th>操作</th></tr><c:forEach items="${empList}" var="emp"><tr><td>${emp.empno}</td><td><img src="/${emp.image}" width="100px" height="100px" /></td><td>${emp.ename}</td><td>${emp.mgr}</td><td>${emp.job}</td><td><fmt:formatDate value="${emp.hiredate}" pattern="yyyy-MM-dd"></fmt:formatDate> </td><td>${emp.sal}</td><td>${emp.comm}</td><td>${emp.deptno}</td><td><a href="/emp/del/${emp.empno}">删除</a><a>修改</a></td></tr></c:forEach></table>
</body>
</html>

8 整合测试

8.1 声明式事务测试

• 在service层编写更新(增删改)操作，然后编写异常代码。测试事务是否生效

8.2 整合后注解扫描问题

此时项目中有两个工厂

• DispatcherServlet 启动的springMVC工厂==负责生产Controller及springMVC自己的系统组件
• ContextLoaderListener 启动的spring工厂==负责生产其他所有组件
• springMVC的工厂会被设置为spring工厂的子工厂，可以随意获取spring工厂中的组件

两个工厂不能有彼此侵入，即，生产的组件不能有重合。

SpringMVC工厂

<!--  use-default-filters ：表示是否使用默认的注解扫描过滤，默认为true，表示使用，包名是什么就扫描哪个包  
-->
<context:component-scan base-package="com.ying" use-default-filters="false"><!--  指定要扫描的类上的注解   --><context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>

Spring工厂

<context:component-scan base-package="com.ying" use-default-filters="true" ><!--  使用默认的注解扫描过滤，但是排除Controller上的注解   --><context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>

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