创建一个web项目

添加JAR

commons-dbcp2-2.9.0.jar
commons-logging-1.2.jar
commons-pool2-2.11.1.jar
log4j-1.2.17.jar
log4j-1.2.17-javadoc.jar
mybatis-3.5.8.jar
mybatis-spring-2.0.6.jar
mysql-connector-java-8.0.27.jar
spring-aop-5.3.14.jar
spring-beans-5.3.14.jar
spring-context-5.3.14.jar
spring-context-support-5.3.14.jar
spring-core-5.3.14.jar
spring-expression-5.3.14.jar
spring-jdbc-5.3.14.jar
spring-tx-5.3.14.jar
spring-web-5.3.14.jar

创建相关User表

Mybatis的Conf.xml可以不配置，全部交给Spring去管理

在src中创建applicationContext.xml

创建mapper，并写一个userMapper.xml

web.xml中引入applicationContext.xml

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<!-- web项目中引入Spring -->
  <!-- needed for ContextLoaderListener -->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:applicationContext.xml</param-value>
	</context-param>

	<!-- Bootstraps the root web application context before servlet initialization -->
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>

整合SM

整合SS

加入jar

spring-webmvc-5.3.14.jar

配置web.xml

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<!-- 整合SpringMVC -->
	<!-- The front controller of this Spring Web application, responsible for handling all application requests -->
	<servlet>
		<servlet-name>springDispatcherServlet</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>classpath:applicationContext-controller.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>

	<!-- Map all requests to the DispatcherServlet for handling -->
	<servlet-mapping>
		<servlet-name>springDispatcherServlet</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>

编写SpringMVC配置文件

applicationContext-controller.xml

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<!-- 配置视图解析器 -->
	<bean
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/views/"></property>
		<property name="suffix" value=".jsp"></property>
	</bean>
	<!-- 配置注解驱动 -->
	<mvc:annotation-driven></mvc:annotation-driven>