环境: Eclipse mars.2 + jdk1.8 + SpringMvc4.0.0+Spring4.0.0+Mybatis3.2.7整合开发
导入jar包:
mysql数据库驱动包
c3p0包
Mybatis
mybatis-3.2.7.jar
lib/*.jar
Spring
libs/*.jar(包含了springmvc的jar包)
Mybatis与Spring整合额外需要的包 mybatis-spring-1.2.2.jar
建好项目结构包
com.zns.blog.controller
com.zns.blog.service
com.zns.blog.mapper
com.zns.blog.domain
假设数据库有一张用户表 就2个字段 主键 和 账号
新建User类
package com.zns.blog.domain; public class User { private int UserID; private String UserAccount; public int getUserID() { return UserID; } public void setUserID(int userID) { UserID = userID; } public String getUserAccount() { return UserAccount; } public void setUserAccount(String userAccount) { UserAccount = userAccount; } }
新建UserMapper接口
package com.zns.blog.mapper; import com.zns.blog.domain.User; public interface UserMapper { public User getByID(int id) throws Exception; }
新建UserMapper.xml
<?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"> <mapper namespace="com.zns.blog.mapper.UserMapper"> <select id="getByID" parameterType="int" resultType="com.zns.blog.domain.User"> select * from User where UserID=#{UserID} </select> </mapper>
src下增加jdbc.properties文件
jdbc.driver = com.mysql.jdbc.Driver
jdbc.url = jdbc:mysql://localhost:3306/mydb
jdbc.user = root
jdbc.password =123456
新建一个config资源文件夹
然后在config下新增spring和mybatis文件夹
在mybatis下新建mybatis-config.xml
<?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> <!-- 由于使用mybatis与spring的整合包进行扫描 不需要配置mapper了 前提是mapper.xml和mapper.java接口同名并在同一个目录 --> <!-- 返回resultType为map时,如果数据为空的字段,则该字段会省略不显示, 可以通过添加该配置,返回null --> <settings> <setting name="callSettersOnNulls" value="true"/> </settings> </configuration>
在spring下新建applicationContext.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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" 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/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"> <!-- 配置连接池: --> <!-- 引入外部属性文件 --> <context:property-placeholder location="classpath:jdbc.properties"/> <!-- 配置C3P0连接池: --> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="driverClass" value="${jdbc.driver}"/> <property name="jdbcUrl" value="${jdbc.url}"/> <property name="user" value="${jdbc.user}"/> <property name="password" value="${jdbc.password}"/> </bean> <!-- spring和MyBatis整合,不需要mybatis的配置映射文件 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <!-- 加载mybatis全局配置文件 --> <property name="configLocation" value="classpath:mybatis/mybatis-config.xml"></property> </bean> <!-- 配置mapper扫描器 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!-- 扫描com.zns.blog.mapper这个包以及它的子包下的所有映射接口类,多个包逗号隔开 --> <property name="basePackage" value="com.zns.blog.mapper" /> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" /> </bean> <!-- 配置Spring的事务管理器 与mabatis整合是用jdbc事务 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> <!-- 拦截器方式配置事物 --> <!-- <tx:advice id="transactionAdvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="add*" propagation="REQUIRED" /> <tx:method name="update*" propagation="REQUIRED" /> <tx:method name="delete*" propagation="REQUIRED" /> <tx:method name="get*" propagation="SUPPORTS" /> <tx:method name="*" propagation="SUPPORTS" /> </tx:attributes> </tx:advice> <aop:config> <aop:pointcut id="transactionPointcut" expression="execution(* com.zns.blog.service.*.*(..))" /> <aop:advisor pointcut-ref="transactionPointcut" advice-ref="transactionAdvice" /> </aop:config> --> <!-- 配置servicce --> </beans>
在spring下新建springmvc.xml
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" 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/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd "> <!-- 扫描指定包 --> <context:component-scan base-package="com.zns.blog.controller"></context:component-scan> <context:component-scan base-package="com.zns.blog.service"></context:component-scan> <!--注解映射器 --> <!-- <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/> --> <!--注解适配器 --> <!-- <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"/> --> <!-- 使用这个可以代替上边的注解映射器和适配器 --> <mvc:annotation-driven></mvc:annotation-driven> <!-- 视图解析器 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> </bean> <!-- 静态资源访问 --> <mvc:resources mapping="/**" location="/" /> </beans>
web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1"> <!-- springmvc前端控制器 --> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring/springmvc.xml</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> <url-pattern>*.action</url-pattern> </servlet-mapping> <!-- springmvc前端控制器 restful风格 --> <servlet> <servlet-name>springmvc_rest</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring/springmvc.xml</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>springmvc_rest</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!-- 配置Spring的核心监听器 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring/applicationContext.xml</param-value> </context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <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>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>characterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> </web-app>
新建UserService
package com.zns.blog.service; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import com.zns.blog.domain.User; import com.zns.blog.mapper.UserMapper; @Service public class UserService { @Autowired private UserMapper userMapper; public User getByID(int id) throws Exception{ return userMapper.getByID(id); } }
新建一个UserController
package com.zns.blog.controller; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.servlet.ModelAndView; import com.zns.blog.domain.User; import com.zns.blog.service.UserService; @Controller @RequestMapping("User") public class UserController { @Autowired private UserService userService; @RequestMapping("Detail") public ModelAndView Detail() throws Exception { User user = userService.getByID(1); System.out.println(user); ModelAndView modelAndView = new ModelAndView(); //相当于加入到request域 modelAndView.addObject("userInfo", user); modelAndView.setViewName("/xxx.jsp"); return modelAndView; } }
启动测试访问/项目名/User/Detail 可以看到打印的用户信息 基本整合完毕