1.导入jar
<properties><spring.vsesion>5.2.15.RELEASE</spring.vsesion></properties><dependencies><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>3.8.1</version><scope>test</scope></dependency><!-- mybatis --><dependency><groupId>org.mybatis</groupId><artifactId>mybatis</artifactId><version>3.5.9</version></dependency><!-- mysql --><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>8.0.25</version></dependency><!-- spring整合mybatis--><dependency><groupId>org.mybatis</groupId><artifactId>mybatis-spring</artifactId><version>2.0.7</version></dependency><!-- springmvc --><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>${spring.vsesion}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId><version>${spring.vsesion}</version></dependency><!-- lombok --><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><version>1.18.30</version></dependency><!-- servlet --><dependency><groupId>javax.servlet</groupId><artifactId>javax.servlet-api</artifactId><version>4.0.1</version></dependency><!-- jackson --><dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-databind</artifactId><version>2.18.1</version></dependency><!-- druid连接池 存放连接数据库对象的池子--><dependency><groupId>com.alibaba</groupId><artifactId>druid</artifactId><version>1.2.23</version></dependency><dependency><groupId>jstl</groupId><artifactId>jstl</artifactId><version>1.2</version></dependency><!-- 文件上传依赖--><dependency><groupId>commons-fileupload</groupId><artifactId>commons-fileupload</artifactId><version>1.5</version></dependency><!--在commons-fileupload基础上阿里oss--><dependency><groupId>com.aliyun.oss</groupId><artifactId>aliyun-sdk-oss</artifactId><version>3.17.4</version></dependency></dependencies>2.配置spring.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--><context:component-scan base-package="com.aaa"/><mvc:annotation-driven/><mvc:default-servlet-handler/><bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"><property name="prefix" value="/views/"/><property name="suffix" value=".jsp"/></bean><bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"><!-- 最大上传大小 单位byte 5M=5*1024*1024--><property name="maxUploadSize" value="5242880"/><!-- 设置上传编码--><property name="defaultEncoding" value="utf-8"/></bean><!-- 整合mybatis-->
<!-- 数据源--><bean id="ds" class="com.alibaba.druid.pool.DruidDataSource"><property name="driverClassName" value="com.mysql.cj.jdbc.Driver"/><property name="url" value="jdbc:mysql://localhost:3306/day1216"/><property name="username" value="root"/><property name="password" value="123456"/>
<!-- 最大连接个数--><property name="maxActive" value="10"/>
<!-- 连接池初始个数--><property name="initialSize" value="5"/>
<!-- 最大等待时长--><property name="maxWait" value="5000"/></bean>
<!--配置spring和mybatis的整合类--><bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 指定数据源--><property name="dataSource" ref="ds"/>
<!-- 指定映射文件的路径--><property name="mapperLocations" value="classpath:/mapper/*.xml"/></bean><!-- 为dao接口生成代理实现类，并且该类对象交予spring管理 自动注入给其他层的对象 --><bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 为哪些包下的接口生成代理实现类--><property name="basePackage" value="com.aaa.mapper"/></bean>
</beans>3.配置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">
<!-- 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>
<!-- 设置请求的编码--><init-param><param-name>forceRequestEncoding</param-name><param-value>true</param-value></init-param>
<!-- 设置响应的编码--><init-param><param-name>forceResponseEncoding</param-name><param-value>true</param-value></init-param></filter><filter-mapping><filter-name>encodingFilter</filter-name><url-pattern>/*</url-pattern></filter-mapping><servlet><servlet-name>spring</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><init-param><param-name>contextConfigLocation</param-name><param-value>classpath:spring.xml</param-value></init-param>
<!-- 当启动tomcat时加载spring的配置文件如果不写，当第一次访问接口时加载--><load-on-startup>1</load-on-startup>
</servlet><servlet-mapping><servlet-name>spring</servlet-name><url-pattern>/</url-pattern></servlet-mapping>
</web-app>
