SpringMVC与mybatis整合

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 imagesPath="E:\\develop\\upload\\images\\";
            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;
    }
}