MyBatis 本是apache的一个开源项目iBatis, 2010年这个项目由apache software foundation 迁移到了google code，并且改名为MyBatis 。
一、逆向工程生成基础信息
<"1.0" encoding="UTF-8"?> <!DOCTYPE generatorConfiguration PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN" "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd"> <generatorConfiguration> <context id="testTables" targetRuntime="MyBatis3"> <commentGenerator> <> <property name="suppressAllComments" value="true" /> </commentGenerator> <> <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3307/mybatis" userId="root" password="jalja"> </jdbcConnection> <!-- 默认false，把JDBC DECIMAL 和 NUMERIC 类型解析为 Integer，为 true时把JDBC DECIMAL 和 NUMERIC 类型解析为java.math.BigDecimal --> <javaTypeResolver> <property name="forceBigDecimals" value="false" /> </javaTypeResolver> <> <javaModelGenerator targetPackage="com.jalja.springmvc_mybatis.model.pojo" targetProject=".src"> <> <property name="enableSubPackages" value="false" /> <> <property name="trimStrings" value="true" /> </javaModelGenerator> <> <sqlMapGenerator targetPackage="com.jalja.springmvc_mybatis.mapper" targetProject=".src"> <> <property name="enableSubPackages" value="false" /> </sqlMapGenerator> <> <javaClientGenerator type="XMLMAPPER" targetPackage="com.jalja.springmvc_mybatis.mapper" targetProject=".src"> <> <property name="enableSubPackages" value="false" /> </javaClientGenerator> <> <table tableName="items"></table> <table tableName="orders"></table> <table tableName="orderdetail"></table> <table tableName="user"></table> </context> </generatorConfiguration> public static void main(String[] arhs) throws Exception{ List<String> warnings = new ArrayList<String>(); boolean overwrite = true; File configFile = new File("src.main.resources/generator.xml"); ConfigurationParser cp = new ConfigurationParser(warnings); Configuration config = cp.parseConfiguration(configFile); DefaultShellCallback callback = new DefaultShellCallback(overwrite); MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config, callback, warnings); myBatisGenerator.generate(null); }
二、springMVC与Mybatis整合 各个配置文件
1.项目结构
2、各个文件的核心代码
a.web.xml
<"1.0" encoding="UTF-8"?> <web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0"> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <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> <context-param> <param-name>log4jConfigLocation</param-name> <param-value>classpath:log4j.properties</param-value> </context-param> <context-param> <param-name>log4jRefreshInterval</param-name> <param-value>3000</param-value> </context-param> <listener> <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class> </listener> <> <filter> <filter-name>SpringEncodingFilter</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>SpringEncodingFilter</filter-name> <url-pattern>*.do</url-pattern> </filter-mapping> <> <servlet> <servlet-name>springMvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <!-- contextConfigLocation加载 springMvc的配置文件(处理器适配器 ，映射器) 如果不配置默认加载的是 /WEB-INF/servlet名称-servlet.xml(springMvc-servlet.xml) --> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring/springmvc.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>springMvc</servlet-name> <!-- 1、*.do :DispatcherServlet 解析所有 *.do 结尾的访问 2、 / :DispatcherServlet解析所有请求（包括静态资源） 这种配置可以实现restful风格的url 3、/*: 这种配置最终要转发到一个jsp页面 --> <url-pattern>*.do</url-pattern> </servlet-mapping> <!-- springMvc前端控制器 RestFul <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/applicationContext-springmvc.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>springMvc_rest</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> --> <session-config> <session-timeout>30</session-timeout> </session-config> </web-app>
b、config/mybatis/applicationContext-mybatis.xml
<"1.0" encoding="UTF-8" ?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> <!-- 各个属性 properties： setting（全局配置参数配置）：mybatis运行时可以调整一些运行参数 例如：开启二级缓存、开启延迟加载 typeAliases(类型别名): 在mapper.xml中定义parameterType 参数类型 resultType 返回类型时 需要指定类型的路径 不方便开发，我们开一针对 这些类型给其指定别名 typeHandler(类型处理器):在mybatis 中是通过typeHandler 完成 jdbc类型与java类型的转化 ，mybatis 提供的处理器已可满足 开发需求 objectFactory(对象工厂)： plugins(插件): environments(环境集合属性对象): environment（环境子属性对象）: transactionManager(事务管理): dataSource(数据源): mappers(映射器): --> <> <> <settings> <> <setting name="lazyLoadingEnabled" value="true"/> <> <setting name="aggressiveLazyLoading" value="false"/> <> <setting name="cacheEnabled" value="true"/> </settings> <typeAliases> <> <> <> <package name="com.jalja.springmvc_mybatis.model.pojo"/> <package name="com.jalja.springmvc_mybatis.model.custom"/> <package name="com.jalja.springmvc_mybatis.model.vo"/> </typeAliases> <> <> <!-- 和spring整合后 可以去掉 <package name="com.jalja.spring_mybatis.mapper"/> </mappers>--> </configuration>
c、config/spring/applicationContext-dao.xml
<"1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:cache="http://www.springframework.org/schema/cache" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-3.2.xsd"> <> <context:property-placeholder location="classpath:jdbc.properties"/> <!-- 对JDBC配置进行解密 <bean id="propertyConfigurer"> <property name="locations"> <list> <value>classpath:resources/config/jdbc.properties</value> </list> </property> </bean> --> <bean id="dataSource" destroy-method="close"> <property name="driverClassName"> <value>${jdbc_driverClassName}</value> </property> <property name="url"> <value>${jdbc_url}</value> </property> <property name="username"> <value>${jdbc_username}</value> </property> <property name="password"> <value>${jdbc_password}</value> </property> <> <property name="maxActive"> <value>20</value> </property> <> <property name="initialSize"> <value>1</value> </property> <> <property name="maxWait"> <value>60000</value> </property> <> <property name="maxIdle"> <value>20</value> </property> <> <property name="minIdle"> <value>3</value> </property> <> <property name="removeAbandoned"> <value>true</value> </property> <> <property name="removeAbandonedTimeout"> <value>180</value> </property> <> <property name="connectionProperties"> <value>clientEncoding=UTF-8</value> </property> </bean> <> <bean id="sqlSessionFactory"> <property name="dataSource" ref="dataSource"/> <property name="configLocation" value="classpath:mybatis/applicationContext-mybatis.xml"/> </bean> <> <bean> <> <property name="basePackage" value="com.jalja.springmvc_mybatis.mapper"/> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/> </bean> <> <bean id="transactionManager"> <property name="dataSource" ref="dataSource"></property> </bean> <> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="update*" propagation="REQUIRED"/> <tx:method name="save*" propagation="REQUIRED"/> <tx:method name="delete*" propagation="REQUIRED"/> <tx:method name="get*" propagation="SUPPORTS" read-only="true"/> <tx:method name="find*" propagation="SUPPORTS" read-only="true"/> </tx:attributes> </tx:advice> <> <aop:config> <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.jalja.springmvc_mybatis.service.impl.*.*(..))"/> </aop:config> </beans>
d、config/spring/applicationContext-service.xml
<"1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:cache="http://www.springframework.org/schema/cache" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-3.2.xsd"> <bean id="itemsService"></bean> </beans>
e、config/spring/springmvc.xml
<"1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:cache="http://www.springframework.org/schema/cache" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-3.2.xsd"> <> <> <> <> <> <!--配置映射器和 适配器 <bean/> <bean/> --> <> <mvc:annotation-driven/> <!-- 配置 Handler <bean/>--> <> <context:component-scan base-package="com.jalja.springmvc_mybatis.controller" /> <> <mvc:annotation-driven conversion-service="conversionService"/> <bean id="conversionService"> <property name="converters"> <list> <> <bean></bean> </list> </property> </bean> <> <bean/> <> <> <bean id="multipartResolver"> <> <property name="maxUploadSize" value="5242880"/> </bean> <> <> <> <mvc:interceptors> <mvc:interceptor> <mvc:mapping path="/**" /> <bean /> </mvc:interceptor> </mvc:interceptors> <> <bean> <> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/> <property name="prefix" value="/WEB-INF/jsp/" /> <property name="suffix" value=".jsp" /> </bean> </beans>
f、config/jdbc.properties
jdbc_driverClassName=com.mysql.jdbc.Driver jdbc_url=jdbc:mysql://localhost:3306/mybatis?useUnicode=true&characterEncoding=UTF-8 jdbc_username=root jdbc_password=111111
g、config/log4j.properties
#在开发环境下的日志级别 要设置成debug，生成环境设置成info 或error log4j.rootLogger=debug, stdout log4j.logger.org.apache.ibatis=debug log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n
h、com/jalja/springmvc_mybatis/controller/ItemsController.java
package com.jalja.springmvc_mybatis.controller; import java.io.File; import java.util.List; import java.util.UUID; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.multipart.MultipartFile; import com.jalja.springmvc_mybatis.exception.CustomException; import com.jalja.springmvc_mybatis.model.custom.ItemsCustom; import com.jalja.springmvc_mybatis.service.ItemsService; /** * 商品 * @author PC003 *conterver参数转换器 springMvc提供了很多参数转换器 */ @Controller @RequestMapping("/items") //窄化请求映射 public class ItemsController { @Autowired ItemsService itemsService; @RequestMapping(value="/findItemsList") public String findItemsList(Model model) throws Exception{ List<ItemsCustom> itemsList=itemsService.findItemsList(null); System.out.println(itemsList); model.addAttribute("itemsList", itemsList); return "itemsList"; } @RequestMapping(value="/editItems", method={RequestMethod.POST,RequestMethod.GET}) //限制Http请求方式 //@RequestParam 将请求参数 与 形式参数进行绑定 required:指定属性必须传入值 defaultValue:设置默认值 public String editItems(Model model, @RequestParam(value="id",required=true,defaultValue="0") Integer itemsId) throws Exception{ ItemsCustom itemsCustom=itemsService.findItemsById(itemsId); if(itemsCustom==null){ throw new CustomException("商品不存在"); } model.addAttribute("itemsCustom", itemsCustom); return "editItems"; } @RequestMapping(value="/updateItems") public String editItemsSubmit(Integer id,ItemsCustom itemsCustom,MultipartFile itemsPic) throws Exception{ String uploadFileName=itemsPic.getOriginalFilename();//获取上传的文件名 if(itemsPic!=null && uploadFileName!=null && !uploadFileName.equals("")){ String imagesPath="E:developuploadimages"; String newFileName=UUID.randomUUID()+uploadFileName.substring(uploadFileName.lastIndexOf("."),uploadFileName.length()); File newFile=new File(imagesPath+newFileName); itemsPic.transferTo(newFile);//将内存中的数据写入磁盘 itemsCustom.setPic(newFileName); } itemsService.updateItemsById(id, itemsCustom); return "redirect:findItemsList.do"; //重定向 } //JSON的使用 @ResponseBody：将对像转json输出 @RequestBody:将请求参数转 java对象 @RequestMapping(value="/jsonRequest") public @ResponseBody ItemsCustom jsonRequest(@RequestBody ItemsCustom itemsCustom) throws Exception{ return itemsCustom; } //RestFul 风格 编程 /restFulRequest/{id}：表示将这个位置的参数传到 @PathVariable 指定的名称中 @RequestMapping(value="/restFulRequest/{id}") public @ResponseBody ItemsCustom restFulRequest(@PathVariable("id") Integer id) throws Exception{ ItemsCustom itemsCustom=itemsService.findItemsById(id); return itemsCustom; } }
以上所述是小编给大家介绍的SpringMVC整合mybatis实例代码，希望对大家有所帮助，如果大家想了解更多资讯敬请关注查字典教程网！
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