使用IDEA搭建SSM框架的详细教程(spring + springMVC +MyBatis)

<!--导入依赖-->
<dependencies>
 <!--Junit-->
 <dependency>
 <groupId>junit</groupId>
 <artifactId>junit</artifactId>
 <version>4.12</version>
 </dependency>

 <!--数据库驱动-->
 <dependency>
 <groupId>mysql</groupId>
 <artifactId>mysql-connector-java</artifactId>
 <version>8.0.15</version>
 </dependency>

 <!-- 数据库连接池 -->
 <dependency>
 <groupId>com.mchange</groupId>
 <artifactId>c3p0</artifactId>
 <version>0.9.5.2</version>
 </dependency>

 <!--Servlet - JSP -->
 <dependency>
 <groupId>javax.servlet</groupId>
 <artifactId>servlet-api</artifactId>
 <version>2.5</version>
 </dependency>
 <dependency>
 <groupId>javax.servlet.jsp</groupId>
 <artifactId>jsp-api</artifactId>
 <version>2.2</version>
 </dependency>
 <dependency>
 <groupId>javax.servlet</groupId>
 <artifactId>jstl</artifactId>
 <version>1.2</version>
 </dependency>

 <!--Mybatis-->
 <dependency>
 <groupId>org.mybatis</groupId>
 <artifactId>mybatis</artifactId>
 <version>3.5.2</version>
 </dependency>
 <dependency>
 <groupId>org.mybatis</groupId>
 <artifactId>mybatis-spring</artifactId>
 <version>2.0.2</version>
 </dependency>

 <!--Spring-->
 <dependency>
 <groupId>org.springframework</groupId>
 <artifactId>spring-webmvc</artifactId>
 <version>5.1.9.RELEASE</version>
 </dependency>

 <dependency>
 <groupId>org.springframework</groupId>
 <artifactId>spring-jdbc</artifactId>
 <version>5.1.9.RELEASE</version>
 </dependency>

 <!--lombok-->
 <dependency>
 <groupId>org.projectlombok</groupId>
 <artifactId>lombok</artifactId>
 <version>1.18.10</version>
 </dependency>
</dependencies>

<!--静态资源导出问题-->
<build>
 <resources>
 <resource>
  <directory>src/main/java</directory>
  <includes>
  <include>**/*.properties</include>
  <include>**/*.xml</include>
  </includes>
  <filtering>false</filtering>
 </resource>
 <resource>
  <directory>src/main/resources</directory>
  <includes>
  <include>**/*.properties</include>
  <include>**/*.xml</include>
  </includes>
  <filtering>false</filtering>
 </resource>
 </resources>
</build>

<?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">
<configuration>
 
 <!--设置运行日志-->
 <settings>
 <setting name="logImpl" value="STDOUT_LOGGING"/>
 </settings>
 
 <!--取别名-->
 <typeAliases>
 <package name="com.pojo"/>
 </typeAliases>
 
 <!--绑定mapper，根据自己的项目设置-->
 <mappers>
 <mapper resource="com/dao/Mapper.xml"/>
 </mappers>

</configuration>

jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/数据库名?useSSL=true&useUnicode=true&characterEncoding=utf8
jdbc.username=数据库用户名
jdbc.password=数据库密码

<?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">

 <!-- 配置整合mybatis -->
 <!-- 1.关联数据库文件 -->
 <context:property-placeholder location="classpath:database.properties"/>

 <!-- 2.数据库连接池 -->
 <!--数据库连接池
 dbcp 半自动化操作 不能自动连接
 c3p0 自动化操作（自动的加载配置文件 并且设置到对象里面）
 -->
 <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
 <!-- 配置连接池属性 -->
 <property name="driverClass" value="${jdbc.driver}"/>
 <property name="jdbcUrl" value="${jdbc.url}"/>
 <property name="user" value="${jdbc.username}"/>
 <property name="password" value="${jdbc.password}"/>

 <!-- c3p0连接池的私有属性 -->
 <property name="maxPoolSize" value="30"/>
 <property name="minPoolSize" value="10"/>
 <!-- 关闭连接后不自动commit -->
 <property name="autoCommitOnClose" value="false"/>
 <!-- 获取连接超时时间 -->
 <property name="checkoutTimeout" value="10000"/>
 <!-- 当获取连接失败重试次数 -->
 <property name="acquireRetryAttempts" value="2"/>
 </bean>

 <!-- 3.配置SqlSessionFactory对象 -->
 <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
 <!-- 注入数据库连接池 -->
 <property name="dataSource" ref="dataSource"/>
 <!-- 配置MyBaties全局配置文件:MyBatis-config.xml -->
 <property name="configLocation" value="classpath:MyBatis-config.xml"/>
 </bean>

 <!-- 4.配置扫描Dao接口包，动态实现Dao接口注入到spring容器中 -->
 <!--解释 ：https://www.cnblogs.com/jpfss/p/7799806.html-->
 <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
 <!-- 注入sqlSessionFactory -->
 <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
 <!-- 给出需要扫描Dao接口包 -->
 <property name="basePackage" value="com.dao"/>
 </bean>

</beans>

<?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
 http://www.springframework.org/schema/context/spring-context.xsd">

 <!-- 扫描service相关的bean -->
 <context:component-scan base-package="com.service" />

 <!--ServiceImpl注入到IOC容器中，此处需要修改成自己的-->
 <bean id="ServiceImpl" class="com.service.ServiceImpl">
 <property name="Mapper" ref="Mapper"/>
 </bean>

 <!-- 配置事务管理器 -->
 <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
 <!-- 注入数据库连接池 -->
 <property name="dataSource" ref="dataSource" />
 </bean>

</beans>

<?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">

 <!--DispatcherServlet-->
 <servlet>
 <servlet-name>DispatcherServlet</servlet-name>
 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
 <init-param>
  <param-name>contextConfigLocation</param-name>
  <!--一定要注意:我们这里加载的是总的配置文件，之前被这里坑了！-->
  <param-value>classpath:applicationContext.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>

 <!--encodingFilter-->
 <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>

 <!--Session过期时间-->
 <session-config>
 <session-timeout>15</session-timeout>
 </session-config>
</web-app>

<?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
 http://www.springframework.org/schema/context/spring-context.xsd
 http://www.springframework.org/schema/mvc
 https://www.springframework.org/schema/mvc/spring-mvc.xsd">

 <!-- 配置SpringMVC -->
 <!-- 1.开启SpringMVC注解驱动 -->
 <mvc:annotation-driven />
 <!-- 2.静态资源默认servlet配置-->
 <mvc:default-servlet-handler/>

 <!-- 3.配置jsp 显示ViewResolver视图解析器 -->
 <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
 <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
 <!--此处注意路径问题,/WEB-INF/jsp/-->
 <property name="prefix" value="/WEB-INF/jsp/" />
 <property name="suffix" value=".jsp" />
 </bean>

 <!-- 4.扫描web相关的bean -->
 <context:component-scan base-package="com.controller" />
</beans>

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://www.springframework.org/schema/beans
 http://www.springframework.org/schema/beans/spring-beans.xsd">

 <!--将Spring其他配置文件整合到一个总的配置文件，用的时候使用这个配置文件-->
 <import resource="classpath:Spring-service.xml"/>
 <import resource="classpath:Spring-dao.xml"/>
 <import resource="classpath:Spring-mvc.xml"/>

</beans>

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
 PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
 "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<!--绑定对应的接口-->
<mapper namespace="com.dao.Mapper">
 <!--此处写对应的SQL操作-->
</mapper>