ssm整合swagger（学习笔记——SSM整合（思路、步骤））
导读：2023-01-22...
2023-01-22
一 、SSM整合
1 、Spring + SpringMVC
（1）容器管理对象 ，由DispatcherServlet管理
（2）Spring容器对象 ，由ContextLoaderListener管理
2 、解决组件扫描的冲突问题
（1）SpringMVC只扫描Controller层
（2）Spring扫描排除Controller层
2 、Spring+Mybatis
（1）关于数据源 、事务管理的代码冲突问题
同意交给Spring管理
（2）Spring管理Mybatis核心对象
①SqlSessionFactory
②Mapper代理对象
二 、SSM整合步骤
1 、Spring + SpringMVC
（1）导入jar包
（2）配置文件
①web.xml
a.注册CharacterEncodingFilter ，解决请求乱码问题
b.注册HiddenHttpMethodFilter ，支持PUT&DELETE提交【REST风格】
c.注册DispatcherServlet（前端控制器） ，管理springMVC容器对象
d.注册一个上下文参数（contextConfigLocation） ，设置spring.xml配置文件路径
e.注册ContextLoaderListener ，管理spring容器对象（目的是为了加载spring的配置文件 ，帮我们初始化IOC容器）
<?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">
<!-- d.注册一个上下文参数（contextConfigLocation） ，设置spring.xml配置文件路径-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring.xml</param-value>
</context-param>
<!-- e.注册ContextLoaderListener ，管理spring容器对象-->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- a.注册CharacterEncodingFilter ，解决请求乱码问题-->
<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>
<init-param>
<param-name>forceRequestEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- b.注册HiddenHttpMethodFilter ，支持PUT&DELETE提交【REST风格】-->
<filter>
<filter-name>HiddenHttpMethodFilter</filter-name>
<filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>HiddenHttpMethodFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- c.注册DispatcherServlet（前端控制器） ，管理springMVC容器对象-->
<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>
</web-app>
②springMVC.xml
a.开启组件扫描（只扫描Controller）
b.装配视图解析器
c.装配视图控制器（view-controller）
d.装配"default-servlet-handler" ，解决静态资源加载问题
e.装配"annotation-driven" ，解决后续问题
解决view-controller问题 、解决default-servlet-handler问题 、解决Jackon配置消息转换器问题
<?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">
<!-- a.开启组件扫描（只扫描Controller）-->
<context:component-scan base-package="com.hh" use-default-filters="false">
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!-- b.装配视图解析器-->
<bean class="org.thymeleaf.spring5.view.ThymeleafViewResolver">
<property name="characterEncoding" value="UTF-8"></property>
<property name="templateEngine">
<bean class="org.thymeleaf.spring5.SpringTemplateEngine">
<property name="templateResolver">
<bean class="org.thymeleaf.spring5.templateresolver.SpringResourceTemplateResolver">
<property name="characterEncoding" value="UTF-8"></property>
<property name="prefix" value="WEB-INF/pages/"></property>
<property name="suffix" value=".html"></property>
</bean>
</property>
</bean>
</property>
</bean>
<!-- c.装配视图控制器（view-controller）-->
<mvc:view-controller path="/" view-name="index"></mvc:view-controller>
<!-- d.装配"default-servlet-handler" ，解决静态资源加载问题-->
<mvc:default-servlet-handler></mvc:default-servlet-handler>
<!-- e.装配"annotation-driven" ，解决后续问题-->
<mvc:annotation-driven></mvc:annotation-driven>
</beans>
③spring.xml
开启组件扫描（排除Controller层）
<?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">
<!-- 开启组件扫描-->
<context:component-scan base-package="com.hh">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
</beans>
2 、Spring+Mybatis
（1）导入jar包
①spring的jar包
<!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.3.10</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-orm -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>5.3.10</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>5.3.10</version>
</dependency>
②mybatis的jar包
<!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.10</version>
</dependency>
<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.26</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.6</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.github.pagehelper/pagehelper -->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>5.0.0</version>
</dependency>
③spring与mybatis整合jar包
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.6</version>
</dependency>
（2）配置文件
①spring.xml
a.开启组件扫描（排除Controller层）
b.加载外部属性文件
c.装配数据源（DruidDataSource）
d.装配事务管理器（DataSourceTransactionManager）
e.开启声明式事务管理注解支持
f.装配SqlSessionFactoryBean ，管理SqlSessionFactory
g.装配MapperScannerConfigurer ，管理Mapper代理对象
<?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:mybatis-spring="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://mybatis.org/schema/mybatis-spring http://mybatis.org/schema/mybatis-spring.xsd">
<!-- a.开启组件扫描（排除Controller层）-->
<context:component-scan base-package="com.hh">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!-- b.加载外部属性文件-->
<context:property-placeholder location="classpath:db.properties"></context:property-placeholder>
<!-- c.装配数据源（DruidDataSource）-->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="driverClassName" value="${db.driverClassName}"></property>
<property name="url" value="${db.url}"></property>
<property name="username" value="${db.username}"></property>
<property name="password" value="${db.password}"></property>
</bean>
<!-- d.装配事务管理器（DataSourceTransactionManager）-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!-- e.开启声明式事务管理注解支持-->
<tx:annotation-driven transaction-manager="transactionManager"></tx:annotation-driven>
<!-- f.装配SqlSessionFactoryBean ，管理SqlSessionFactory-->
<bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 设置数据源-->
<property name="dataSource" ref="dataSource"></property>
<!-- 设置mybatis-config.xml核心配置文件路径-->
<property name="configLocation" value="classpath:mybatis-config.xml"></property>
<!-- 设置类型别名-->
<property name="typeAliasesPackage" value="com.hh.pojo"></property> <!-- 设置映射文件路径--> <property name="mapperLocations" value="classpath:/mapper/*.xml"></property> </bean> <!-- g.装配MapperScannerConfigurer ，管理Mapper代理对象--> <mybatis-spring:scan base-package="com.hh.mapper"></mybatis-spring:scan> </beans>
②springmvc.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">
<!-- a.开启组件扫描（只扫描Controller）-->
<context:component-scan base-package="com.hh" use-default-filters="false">
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!-- b.装配视图解析器-->
<bean class="org.thymeleaf.spring5.view.ThymeleafViewResolver">
<property name="characterEncoding" value="UTF-8"></property>
<property name="templateEngine">
<bean class="org.thymeleaf.spring5.SpringTemplateEngine">
<property name="templateResolver">
<bean class="org.thymeleaf.spring5.templateresolver.SpringResourceTemplateResolver">
<property name="characterEncoding" value="UTF-8"></property>
<property name="prefix" value="WEB-INF/pages/"></property>
<property name="suffix" value=".html"></property>
</bean>
</property>
</bean>
</property>
</bean>
<!-- c.装配视图控制器（view-controller）-->
<mvc:view-controller path="/" view-name="index"></mvc:view-controller>
<!-- d.装配"default-servlet-handler" ，解决静态资源加载问题-->
<mvc:default-servlet-handler></mvc:default-servlet-handler>
<!-- e.装配"annotation-driven" ，解决后续问题-->
<mvc:annotation-driven></mvc:annotation-driven>
</beans>
③mybatis-config.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"https://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<settings>
<!-- 开启自动驼峰式命名映射-->
<setting name="mapUnderscoreToCamelCase" value="true"/>
<!-- 开启延迟加载-->
<setting name="lazyLoadingEnabled" value="true"/>
<!-- 延迟加载的属性-->
<setting name="aggressiveLazyLoading" value="false"/>
<!-- 开启二级缓存-->
<setting name="cacheEnabled" value="true"/>
</settings>
<!-- 添加分页插件-->
<plugins>
<plugin interceptor="com.github.pagehelper.PageInterceptor"></plugin>
</plugins>
</configuration>
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