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一、逆向工程生成基础信息
<?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> <!-- 是否去除自动生成的注释 true：是 ： false:否 --> <property name="suppressAllComments" value="true" /> </commentGenerator> <!--数据库连接的信息：驱动类、连接地址、用户名、密码 --> <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> <!-- targetProject:生成PO类的位置 --> <javaModelGenerator targetPackage="com.jalja.springmvc_mybatis.model.pojo" targetProject=".\src"> <!-- enableSubPackages:是否让schema作为包的后缀 --> <property name="enableSubPackages" value="false" /> <!-- 从数据库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:是否让schema作为包的后缀 --> <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:是否让schema作为包的后缀 --> <property name="enableSubPackages" value="false" /> </javaClientGenerator> <!-- 指定数据库表 --> <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
<?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请求乱码 --> <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
<?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): --> <!-- 对事务的管理和连接池的配置 --> <!-- 延迟加载 --> <settings> <!-- 打开延迟加载 --> <setting name="lazyLoadingEnabled" value="true"/> <!-- 积极加载改为消极加载 --> <setting name="aggressiveLazyLoading" value="false"/> <!-- 开启二级缓存 --> <setting name="cacheEnabled" value="true"/> </settings> <typeAliases> <!-- 针对单个别名定义 --> <!-- <typeAlias type="com.jalja.myBatis.model.User" alias="user"/> --> <!--批量别名的定义 mybatis 自动扫描包中的类 别名就是类名（首字母大小写都可以） --> <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> <!--加载映射文件 --> <!-- <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"/>
<!-- 对JDBC配置进行解密
<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>
<!-- 连接池最大使用连接数 -->
<property name="maxActive">
<value>20</value>
</property>
<!-- 初始化连接大小 -->
<property name="initialSize">
<value>1</value>
</property>
<!-- 获取连接最大等待时间 -->
<property name="maxWait">
<value>60000</value>
</property>
<!-- 连接池最大空闲 -->
<property name="maxIdle">
<value>20</value>
</property>
<!-- 连接池最小空闲 -->
<property name="minIdle">
<value>3</value>
</property>
<!-- 自动清除无用连接 -->
<property name="removeAbandoned">
<value>true</value>
</property>
<!-- 清除无用连接的等待时间 -->
<property name="removeAbandonedTimeout">
<value>180</value>
</property>
<!-- 连接属性 -->
<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扫描器 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 扫描包路径 如果需要扫描多个包 ，中间使用半角逗号隔开 -->
<property name="basePackage" value="com.jalja.springmvc_mybatis.mapper"/>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
</bean>
<!--声明式 事务管理 使用jdbc的事务管理 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!-- 配置事务通知-->
<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>
<!-- 配置事务的切点,并把事务切点和事务属性不关联起来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 处理器 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 --> <!-- 适配器 org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter springmvc3.1以前--> <!-- 适配器 org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter springmvc3.1以后 --> <!--配置映射器和 适配器 <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/> <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"/> --> <!-- 开启注解 映射器和 适配器 这种方式默认加载了很多参数绑定的方法 例如 json转换解析器--> <mvc:annotation-driven/> <!-- 配置 Handler <bean class="com.jalja.springmvc_mybatis.controller.UserController"/>--> <!-- 注解 配置 基于组建扫描的方式 --> <context:component-scan base-package="com.jalja.springmvc_mybatis.controller" /> <!-- 配置自定义参数解析器 --> <mvc:annotation-driven conversion-service="conversionService"/> <bean id="conversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean"> <property name="converters"> <list> <!-- 日期类型转换 --> <bean class="com.jalja.springmvc_mybatis.converter.CustomDateConverter"></bean> </list> </property> </bean> <!-- 全局异常处理器 --> <bean class="com.jalja.springmvc_mybatis.exception.CustomExceptionResolver"/> <!-- 文件上传 --> <!-- 支持上传文件 --> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <!-- 文件大小 5M --> <property name="maxUploadSize" value="5242880"/> </bean> <!-- 使用 restFul 风格 编程 照成 的 静态资源 访问 问题 --> <!-- <mvc:resources mapping="/js/**" location="/resources/js/"/> --> <!-- springMVC拦截器的配置 --> <mvc:interceptors> <mvc:interceptor> <mvc:mapping path="/**" /> <bean class="com.jalja.springmvc_mybatis.interceptor.LoginInterceptor" /> </mvc:interceptor> </mvc:interceptors> <!-- 视图映射 jsp解析 默认使用jstl--> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <!-- 默认使用 --> <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 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);//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;
}
}
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