使用maven整合spring+springmvc+mybatis
开发环境：
1. jdk1.8
2. eclipse4.7.0 (Oxygen)
3. mysql 5.7
在pom.xml文件中，引入我们需要的jar包:(按需引入jar包)
<properties>
<!-- 自定义的spring的版本号 -->
<spring.version>4.3.18.RELEASE</spring.version>
<!-- 自定义的mybaits的版本号 -->
<mybatis.version>3.4.5</mybatis.version>
<!-- 自定义的mybaits-spring的版本号 -->
<mybatis.spring.version>1.3.1</mybatis.spring.version>
</properties> <dependencies>
<!-- springMVC的jar包，由于springMVC依赖 springBeans,springContext,springCore 所以这些jar包会被导入进来-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
<scope>compile</scope>
</dependency>
<!-- spring-tx 事务 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
<scope>compile</scope>
</dependency>
<!-- spring-jdbc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
<scope>compile</scope>
</dependency>
<!-- aspectjweaver aop 依赖该jar包-->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.8.13</version>
</dependency> <!-- servlet的jar包 -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>4.0.1</version>
<scope>provided</scope> <!-- 编译时，不会被打包 -->
</dependency>
<!-- servlet.jsp-api -->
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>2.3.1</version>
<scope>provided</scope>
</dependency>
<!-- javax.servlet.jsp.jstl-api -->
<dependency>
<groupId>javax.servlet.jsp.jstl</groupId>
<artifactId>javax.servlet.jsp.jstl-api</artifactId>
<version>1.2.2</version>
</dependency>
<!-- taglibs-standard-impl jstl的实现 -->
<dependency>
<groupId>org.apache.taglibs</groupId>
<artifactId>taglibs-standard-impl</artifactId>
<version>1.2.5</version>
</dependency> <!-- mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
<scope>compile</scope>
</dependency>
<!-- mybatis-spring -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>${mybatis.spring.version}</version>
<scope>compile</scope>
</dependency>
<!--druid 连接池 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.10</version>
<scope>compile</scope>
</dependency>
<!-- mysql的连接驱动 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.46</version>
</dependency> <!--log4j/log4j -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency> </dependencies>
在Maven dependencies中可以看到jar包，说明引入成功了
定义目录结构:
配置文件：
db.properties
jdbc_driverClassName=com.mysql.jdbc.Driver
jdbc_url=jdbc:mysql://localhost:3306/db_ssm
jdbc_username=root
jdbc_password=123456
mybatis-config.xml
<!--mybatis的总配置文件! -->
<settings>
<!-- 配置mybatis的日志 -->
<setting name="logImpl" value="LOG4J"/>
<!--开启延迟加载 -->
<setting name="lazyLoadingEnabled" value="true"/>
<!--设置不要积极去加载 -->
<setting name="aggressiveLazyLoading" value="false"/>
<!--延迟加载的触发方法 -->
<setting name="lazyLoadTriggerMethods" value="clone"/>
</settings>
<!-- 别名 -->
<typeAliases>
<package name="com.login.dao"/>
</typeAliases>
applicationContext-dao.xml
<!--
spring 整合 mybatis 的配置
配置数据库连接池
配置sqlSessionFactory
配置扫描器
配置扫描所有的service类
-->
<!-- 加载db.properties文件 -->
<context:property-placeholder location="classpath:db.properties"/> <!-- 配置数据库连接池 -->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="driverClassName" value="${jdbc_driverClassName}"></property>
<property name="url" value="${jdbc_url}"></property>
<property name="username" value="${jdbc_username}"></property>
<property name="password" value="${jdbc_password}"></property>
</bean> <!-- 配置sqlSessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 数据库连接池 -->
<property name="dataSource" ref="dataSource"></property>
<!-- mapper文件 -->
<property name="mapperLocations">
<!--加载所有的mapper文件 -->
<list>
<value>classpath:mappers/*.xml</value>
</list>
</property>
<!-- mybatis的配置文件 -->
<property name="configLocation" value="classpath:mybatis/mybatis-config.xml"></property>
</bean> <!-- 配置mapper扫描器 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.login.dao"></property>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
</bean>
<!--扫描所有的service -->
<context:component-scan base-package="com.login.service"></context:component-scan>
applicationContext-tx.xml
<!-- 配置spring的事务
mybatis采用的是spring中的jdbc中的事务管理（配置事务管理器）
事务增强
aop切面
-->
<!--事务管理 -->
<bean id="tx" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 这里的DataSource是引用的applicationContext dao文件中的 -->
<property name="dataSource" ref="dataSource"></property>
</bean> <!-- 增强 -->
<tx:advice id="tx_advice" transaction-manager="tx" >
<tx:attributes>
<!-- 事务传播规则 -->
<tx:method name="save*" propagation="REQUIRED"/>
<tx:method name="add*" propagation="REQUIRED"/>
<tx:method name="delete*" propagation="REQUIRED"/>
<tx:method name="update*" propagation="REQUIRED"/>
<tx:method name="do*" propagation="REQUIRED"/> <tx:method name="get*" propagation="SUPPORTS" read-only="true"/>
<tx:method name="list*" propagation="SUPPORTS" read-only="true"/>
<tx:method name="find*" propagation="SUPPORTS" read-only="true"/>
<tx:method name="query*" propagation="SUPPORTS" read-only="true"/>
<tx:method name="count*" propagation="SUPPORTS" read-only="true"/>
</tx:attributes>
</tx:advice> <!-- Aop 切面
proxy-target-class="false" 是默认的 =====》 默认使用jdk动态代理 基于接口
proxy-target-class="true" =============》使用cglib动态代理 基于类
--> <aop:config proxy-target-class="false">
<aop:advisor advice-ref="tx_advice" pointcut="execution(* com.login.service.*Service.*(..) )"/>
</aop:config>
springmvc.xml
<!--
springmvc的配置文件
扫描handler对象
配置注解的处理器映射器和处理器适配器
配置内部资源视图解析器
处理不了的静态资源交给tomcat
--> <context:component-scan base-package="com.login.web.controller"></context:component-scan> <mvc:annotation-driven></mvc:annotation-driven> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/"></property> <property name="suffix" value=".jsp"></property> </bean> <mvc:default-servlet-handler/>
web.xml
<!-- 配置编码 -->
<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>
<init-param>
<param-name>forceResponseEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>characterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping> <!-- web IOC容器 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/applicationContext-*.xml</param-value>
</context-param>
<!-- 加载监听器 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener> <!-- 配置spring mvc的前端控制器 -->
<servlet>
<servlet-name>spring-mvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 本地的上下文配置 加载springmvc的配置文件 -->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/spring-mvc.xml</param-value>
</init-param>
<!-- 启动容器的时候加载 -->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring-mvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
配置完成后，写一个简单的用户登录操作:
@Controller
public class UserController { @Autowired
private IUserService service; @RequestMapping(path="/login")
public String login(String username,String password,Model m) { User user = service.login(username, password); m.addAttribute("user", user); return "success"; } }
@Service
public class UserServiceImpl implements IUserService { @Autowired
private UserMapper mapper; @Override
public User login(String username, String password) { //参数验证是否为空 //参数判断--》账号，密码是否正确 return mapper.getUserByUsername(username);
} }
<mapper namespace="com.login.dao.UserMapper">
<select id="getUserByUsername" resultType="com.login.entity.User">
SELECT * FROM user WHERE username = #{username}
</select>
</mapper>
然后启动tomcat: