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一、逆向工程生成基礎信息
<?xml version="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> <!-- 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
<?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/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> <!-- 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url 3、/*: 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整合后 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.xsd
http://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
<?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.xsd http://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
<?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.xsd http://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
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
#在開發環境下的日志級別 要設置成debug，生成環境設置成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 p_w_picpathsPath="E:\\develop\\upload\\p_w_picpaths\\";
String newFileName=UUID.randomUUID()+uploadFileName.substring(uploadFileName.lastIndexOf("."),uploadFileName.length());
File newFile=new File(p_w_picpathsPath+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;
}
}
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