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:
总结: 使用maven可以让我们不用担心找不到jar包。maven同时也为我们规定好了一些目录结构,方便我们的开发,但是maven的强大远不如此。让我们一起来学习吧!希望以上这些可以帮到需要帮助的朋友!