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，并且改名為MyBatis 。
一、逆向工程生成基礎信息
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<?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注釋 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作為包的后綴 --><property name="enableSubPackages" value="false" /><!-- 從數據庫返回的值被清理前后的空格 --><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作為包的后綴 --><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作為包的后綴 --><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
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<?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
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<?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整合后 可以去掉 <package name="com.jalja.spring_mybatis.mapper"/> </mappers>--></configuration> |
c、config/spring/applicationContext-dao.xml
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<?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" class="cn.com.sinobpo.project.wfjb.utils.EncryptablePropertyPlaceholderConfigurer"> <property name="locations"><list><value>classpath:resources/config/jdbc.properties</value></list></property></bean> --><bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" 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><!-- 連接池最大空閑 --><property name="maxIdle"><value>20</value></property><!-- 連接池最小空閑 --><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" class="org.mybatis.spring.SqlSessionFactoryBean"> <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 class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!-- 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" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"><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,并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
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<?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" class="com.jalja.springmvc_mybatis.service.impl.ItemsServiceImpl"></bean></beans> |
e、config/spring/springmvc.xml
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<?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"><!--注解 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以后 --><!-- 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以后 --><!--配置映射器和 適配器 <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/><bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"/> --><!-- 開啟注解 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 class="com.jalja.springmvc_mybatis.controller.UserController"/>--><!-- 注解 配置 基于組建掃描的方式 --><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" class="org.springframework.format.support.FormattingConversionServiceFactoryBean"><property name="converters"><list><!-- 日期類型轉換 --><bean class="com.jalja.springmvc_mybatis.converter.CustomDateConverter"></bean></list></property></bean><!-- 全局異常處理器 --><bean class="com.jalja.springmvc_mybatis.exception.CustomExceptionResolver"/><!-- 文件上傳 --><!-- 支持上傳文件 --> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"><!-- 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 class="com.jalja.springmvc_mybatis.interceptor.LoginInterceptor" /></mvc:interceptor></mvc:interceptors><!-- 視圖映射 jsp解析 默認使用jstl--><bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"><!-- 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
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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
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#在開發環境下的日志級別 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
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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服務器之家網站！
