MyBatis 本是apache的一個開源項目iBatis, 2010年這個項目由apache software foundation 遷移到了google code，並且改名為MyBatis 。
一、逆向工程生成基礎信息
<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE generatorConfigurationPUBLIC "-//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><!-- 是否去除自動生成的註釋true：是： false:否--><property name="suppressAllComments" value="true" /></commentGenerator><!--數據庫連接的信息：驅動類、連接地址、用戶名、密碼--><jdbcConnection driverClass="com.mysql.jdbc.Driver"connectionURL="jdbc:mysql://localhost:3307/mybatis" userId="root"password="jalja"></jdbcConnection><!-- 默認false，把JDBC DECIMAL 和NUMERIC 類型解析為Integer，為true時把JDBC DECIMAL 和NUMERIC 類型解析為java.math.BigDecimal --><javaTypeResolver><property name="forceBigDecimals" value="false" /></javaTypeResolver><!-- targetProject:生成PO類的位置--><javaModelGenerator targetPackage="com.jalja.springmvc_mybatis.model.pojo"targetProject="./src"><!-- enableSubPackages:是否讓schema作為包的後綴--><property name="enableSubPackages" value="false" /><!-- 從數據庫返回的值被清理前後的空格--><property name="trimStrings" value="true" /></javaModelGenerator><!-- targetProject:mapper映射文件生成的位置--><sqlMapGenerator targetPackage="com.jalja.springmvc_mybatis.mapper" targetProject="./src"><!-- enableSubPackages:是否讓schema作為包的後綴--><property name="enableSubPackages" value="false" /></sqlMapGenerator><!-- targetPackage：mapper接口生成的位置--><javaClientGenerator type="XMLMAPPER"targetPackage="com.jalja.springmvc_mybatis.mapper" targetProject="./src"><!-- enableSubPackages:是否讓schema作為包的後綴--><property name="enableSubPackages" value="false" /></javaClientGenerator><!-- 指定數據庫表--><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與Mybatis整合各個配置文件
1.項目結構
2、各個文件的核心代碼
a.web.xml
<?xml version="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/javaeehttp://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> <!-- post請求亂碼--><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> <!-- springMvc前端控制器--> <servlet> <servlet-name>springMvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <!-- contextConfigLocation加載springMvc的配置文件(處理器適配器，映射器) 如果不配置默認加載的是/WEB-INF/servlet名稱-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 結尾的訪問2、 / :DispatcherServlet解析所有請求（包括靜態資源） 這種配置可以實現restful風格的url3、/*: 這種配置最終要轉發到一個jsp頁面--><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
<?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> <!-- 各個屬性properties：setting（全局配置參數配置）：mybatis運行時可以調整一些運行參數例如：開啟二級緩存、開啟延遲加載typeAliases(類型別名): 在mapper.xml中定義parameterType 參數類型resultType 返回類型時需要指定類型的路徑不方便開發，我們開一針對這些類型給其指定別名typeHandler(類型處理器):在mybatis 中是通過typeHandler 完成jdbc類型與java類型的轉化，mybatis 提供的處理器已可滿足開發需求objectFactory(對象工廠)：plugins(插件):environments(環境集合屬性對象):environment（環境子屬性對象）:transactionManager(事務管理):dataSource(數據源):mappers(映射器): --><!-- 對事務的管理和連接池的配置--> <!-- 延遲加載--><settings><!-- 打開延遲加載--><setting name="lazyLoadingEnabled" value="true"/><!-- 積極加載改為消極加載--><setting name="aggressiveLazyLoading" value="false"/><!-- 開啟二級緩存--><setting name="cacheEnabled" value="true"/></settings><typeAliases><!-- 針對單個別名定義--><!-- <typeAlias type="com.jalja.myBatis.model.User" alias="user"/> --><!--批量別名的定義mybatis 自動掃描包中的類別名就是類名（首字母大小寫都可以） --><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><!--加載映射文件--><!-- <mappers> <mapper resource="com/jalja/spring_mybatis/mapper/UserMapper.xml"/> --><!-- 和spring整合後可以去掉<package name="com.jalja.spring_mybatis.mapper"/> </mappers>--></configuration>
c、config/spring/applicationContext-dao.xml
<?xml version="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.xsdhttp://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-3.2.xsd"><!-- 引入jdbc配置文件--><context:property-placeholder location="classpath:jdbc.properties"/> <!-- 對JDBC配置進行解密<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><!-- 連接池最大使用連接數--><property name="maxActive"><value>20</value></property><!-- 初始化連接大小--><property name="initialSize"><value>1</value></property><!-- 獲取連接最大等待時間--><property name="maxWait"><value>60000</value></property><!-- 連接池最大空閒--><property name="maxIdle"><value>20</value></property><!-- 連接池最小空閒--><property name="minIdle"><value>3</value></property><!-- 自動清除無用連接--><property name="removeAbandoned"><value>true</value></property><!-- 清除無用連接的等待時間--><property name="removeAbandonedTimeout"><value>180</value></property><!-- 連接屬性--><property name="connectionProperties"><value>clientEncoding=UTF-8</value></property></bean><!-- spring和MyBatis完美整合--> <bean id="sqlSessionFactory"> <property name="dataSource" ref="dataSource"/> <property name="configLocation" value="classpath:mybatis/applicationContext-mybatis.xml"/></bean> <!--使用mapper 代理的方式mapper掃描器--><bean> <!-- 掃描包路徑如果需要掃描多個包，中間使用半角逗號隔開--><property name="basePackage" value="com.jalja.springmvc_mybatis.mapper"/> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/> </bean> <!--聲明式事務管理使用jdbc的事務管理--><bean id="transactionManager"><property name="dataSource" ref="dataSource"></property></bean><!-- 配置事務通知--><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><!-- 配置事務的切點,並把事務切點和事務屬性不關聯起來AOP --><aop:config><aop:advisor advice-ref="txAdvice" pointcut="execution(* com.jalja.springmvc_mybatis.service.impl.*.*(..))"/></aop:config></beans> d、config/spring/applicationContext-service.xml
<?xml version="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.xsdhttp://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
<?xml version="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.xsdhttp://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-3.2.xsd"><!--註解處理器映射器--><!-- 映射器org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping springmvc3.1以前--> <!-- 映射器org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping springmvc3.1以後--><!-- 適配器org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter springmvc3.1以前--> <!-- 適配器org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter springmvc3.1以後--><!--配置映射器和適配器<bean/><bean/> --><!-- 開啟註解映射器和適配器這種方式默認加載了很多參數綁定的方法例如json轉換解析器--><mvc:annotation-driven/><!-- 配置Handler<bean/>--><!-- 註解配置基於組建掃描的方式--><context:component-scan base-package="com.jalja.springmvc_mybatis.controller" /><!-- 配置自定義參數解析器--><mvc:annotation-driven conversion-service="conversionService"/><bean id="conversionService"><property name="converters"><list><!-- 日期類型轉換--><bean></bean></list></property></bean><!-- 全局異常處理器--><bean/><!-- 文件上傳--><!-- 支持上傳文件--> <bean id="multipartResolver"><!-- 文件大小5M --><property name="maxUploadSize" value="5242880"/></bean> <!-- 使用restFul 風格編程照成的靜態資源訪問問題--><!-- <mvc:resources mapping="/js/**" location="/resources/js/"/> --><!-- springMVC攔截器的配置--><mvc:interceptors><mvc:interceptor><mvc:mapping path="/**" /><bean /></mvc:interceptor></mvc:interceptors><!-- 視圖映射jsp解析默認使用jstl--><bean><!-- 默認使用--><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.Driverjdbc_url=jdbc:mysql://localhost:3306/mybatis?useUnicode=true&characterEncoding=UTF-8jdbc_username=rootjdbc_password=111111
g、config/log4j.properties
#在開發環境下的日誌級別要設置成debug，生成環境設置成info 或errorlog4j.rootLogger=debug, stdoutlog4j.logger.org.apache.ibatis=debuglog4j.appender.stdout=org.apache.log4j.ConsoleAppenderlog4j.appender.stdout.layout=org.apache.log4j.PatternLayoutlog4j.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參數轉換器springMvc提供了很多參數轉換器*/@Controller@RequestMapping("/items") //窄化請求映射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請求方式//@RequestParam 將請求參數與形式參數進行綁定required:指定屬性必須傳入值defaultValue:設置默認值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();//獲取上傳的文件名if(itemsPic!=null && uploadFileName!=null && !uploadFileName.equals("")){String imagesPath="E://develop//upload//images//";String newFileName=UUID.randomUUID()+uploadFileName.substring(uploadFileName.lastIndexOf("."),uploadFileName.length());File newFile=new File(imagesPath+newFileName);itemsPic.transferTo(newFile);//將內存中的數據寫入磁盤itemsCustom.setPic(newFileName);}itemsService.updateItemsById(id, itemsCustom);return "redirect:findItemsList.do"; //重定向}//JSON的使用@ResponseBody：將對像轉json輸出@RequestBody:將請求參數轉java對象@RequestMapping(value="/jsonRequest")public @ResponseBody ItemsCustom jsonRequest(@RequestBody ItemsCustom itemsCustom) throws Exception{return itemsCustom;}//RestFul 風格編程/restFulRequest/{id}：表示將這個位置的參數傳到@PathVariable 指定的名稱中@RequestMapping(value="/restFulRequest/{id}")public @ResponseBody ItemsCustom restFulRequest(@PathVariable("id") Integer id) throws Exception{ItemsCustom itemsCustom=itemsService.findItemsById(id);return itemsCustom;}}以上所述是小編給大家介紹的SpringMVC整合mybatis實例代碼，希望對大家有所幫助，如果大家想了解更多資訊敬請關注武林網網站！