八：SSM框架整合
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目录
在老期的项目中，一般都是使用ssm项目做开发的，虽然现在的主流开发是springboot来做开发，但是ssm的基本整合还是需要掌握的。
整合SSM框架要做哪些事情：
- SpringMVC: pom
- web.xml
- 前端调度器servlet
- 编码过滤器filter
- 支持rest的过滤器
- springmvc.xml
- 扫描controller包
- 添加
- 视图解析器
- 静态资源解析
- 添加控制器类...
- Spring:
- web.xml
- 监听器（在启动web容器时加载）
- spring.xml
- 扫描所有除了controller包的其他包
- 声明式事
- MyBatis
- 需要和spring整合
- 将sqlSessionFactory 配置为spring的bean
- 数据源 配置为spring的bean
- 全局配置文件
- 所有mapper映射文件
- 将mapper接口的包交给spring
- 将sqlSessionFactory 配置为spring的bean
- 加入全局配置文件
1、导入pom文件
<?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>cn.tulingxueyuan</groupId>
<artifactId>ssm</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<SPRING.VERSION>5.2.6.RELEASE</SPRING.VERSION>
<ASPECTJWEAVER.VERSION>1.9.5</ASPECTJWEAVER.VERSION>
</properties>
<dependencies>
<!--springmvc-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${SPRING.VERSION}</version>
</dependency>
<!--spring-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${SPRING.VERSION}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>${ASPECTJWEAVER.VERSION}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>${SPRING.VERSION}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${SPRING.VERSION}</version>
</dependency>
<!--spring-mybatis 适配器-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.5</version>
</dependency>
<!--mybatis核心依赖-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.5</version>
</dependency>
<!--连接池-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.21</version>
</dependency>
<!--mysql 对应版本的连接器驱动-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.47</version>
</dependency>
<!-- log start -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.30</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.2.3</version>
</dependency>
<!-- log end -->
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-core -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.10.3</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.10.3</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-annotations -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.10.3</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>
2、编写各个框架的配置文件
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_3_1.xsd"
version="3.1">
<!--spring 基于web应用的启动-->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!--全局参数：spring配置文件-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-core.xml</param-value>
</context-param>
<!--前端调度器servlet-->
<servlet>
<servlet-name>dispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!--设置配置文件的路径-->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-mvc.xml</param-value>
</init-param>
<!--设置启动即加载-->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!--编码过滤器filter-->
<filter>
<filter-name>characterEncoding</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<!--设置编码格式-->
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<!---->
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>characterEncoding</filter-name>
<servlet-name>dispatcherServlet</servlet-name>
</filter-mapping>
<!--支持rest的过滤器-->
<filter>
<filter-name>hiddenHttpMethod</filter-name>
<filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>hiddenHttpMethod</filter-name>
<servlet-name>dispatcherServlet</servlet-name>
</filter-mapping>
</web-app>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 https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!--springmvc只扫描控制器-->
<context:component-scan base-package="cn.tulingxueyuan" use-default-filters="false">
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!--静态资源的扫描-->
<mvc:default-servlet-handler></mvc:default-servlet-handler>
<!--动态资源的扫描-->
<mvc:annotation-driven></mvc:annotation-driven>
<!--配置视图管理器-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/page/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
</beans>spring-core.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" xmlns:mybatis="http://mybatis.org/schema/mybatis-spring"
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/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop https://www.springframework.org/schema/aop/spring-aop.xsd http://mybatis.org/schema/mybatis-spring http://mybatis.org/schema/mybatis-spring.xsd">
<!--扫描所有除了controller包的其他包-->
<context:component-scan base-package="cn.tulingxueyuan">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!--引入外部属性资源文件-->
<context:property-placeholder location="classpath:db.properties"></context:property-placeholder>
<!--创建Druid数据源-->
<bean class="com.alibaba.druid.pool.DruidDataSource" id="dataSource">
<property name="username" value="${mysql.username}"></property>
<property name="password" value="${mysql.password}"></property>
<property name="url" value="${mysql.url}"></property>
<property name="driverClassName" value="${mysql.driverClassName}"></property>
</bean>
<!--声明式事-->
<bean class="org.springframework.jdbc.datasource.DataSourceTransactionManager" id="transactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!--基于驱动-->
<tx:annotation-driven transaction-manager="transactionManager"></tx:annotation-driven>
<!--用于声明事务切入的所有方法-->
<aop:config>
<aop:pointcut id="transactionCut" expression="execution(* cn.tulingxueyuan.service.impl.*.*(..))"/>
</aop:config>
<!--用来明确切点匹配到的方法哪些方法需要使用事务-->
<tx:advice id="advice" transaction-manager="transactionManager">
<tx:attributes>
<!--可以使用通配符-->
<tx:method name="add*"/>
<tx:method name="update*"/>
<tx:method name="delete*"/>
<tx:method name="get*" read-only="true" propagation="SUPPORTS"></tx:method>
<tx:method name="query*" read-only="true"></tx:method>
</tx:attributes>
</tx:advice>
<!--SqlSessionFactory-->
<bean class="org.mybatis.spring.SqlSessionFactoryBean" id="sqlSessionFactory">
<!-- 指定spring中的数据源 -->
<property name="dataSource" ref="dataSource"></property>
<property name="configLocation" value="classpath:mybatis-config.xml"></property>
<property name="mapperLocations" value="classpath:cn/tulingxueyuan/mapper/*.xml"></property>
</bean>
<!--将mapper接口交给spring管理-->
<mybatis:scan base-package="cn.tulingxueyuan.mapper"></mybatis:scan>
</beans>mybatis-config.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">
<!--就是DOCTYPE后面对应的根节点-->
<configuration>
<!--mybatis的设置选项 可以改变mybatis运行时行为-->
<settings>
<setting name="mapUnderscoreToCamelCase" value="true"/>
</settings>
<!--类型别名可为 Java 类型设置一个缩写名字。 它仅用于 XML 配置，意在降低冗余的全限定类名书写-->
<typeAliases>
<package name="cn.tulingxueyuan.pojo"/>
</typeAliases>
</configuration>db.properties
mysql.username = root
mysql.password=123456
mysql.url=jdbc:mysql://localhost:3306/mybatis
mysql.driverClassName=com.mysql.jdbc.Driver生成 pojo\\mapper接口\\mapper映射文件
TestController.java
@RestController
public class EmpController {
@Autowired
IEmpService empService;
@RequestMapping("test")
public List<Emp> test(){
List<Emp> emps = empService.selectEmp();
return emps;
}
}
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