基于maven和SSM（spring+springMVC+mybatis）的实例

1、环境搭建

搭建maven环境，DOC下输入mvn -v查看是否配置成功maven环境。新建mvn工程选择webapp，双击进入

工程结构：

2、自动生成代码

文件结构：

生成方法：
本地路径 D:\generator下新建如下文件，导入图中包（前提是本地搭建好了maven环境，DOC下输入mvn -v查看是否配置成功），在路径D:\generator>下，DOC执行命令：

java -jar mybatis-generator-core-1.3.5.jar -configfile generator.xml -overwrite

![这里写图片描述](http://img.blog.csdn.net/20170808115632628?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvcXFfMjM0ODkzMDM=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast)

图中文件数据：

<?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>      <!-- 数据库驱动包位置 -->      <classPathEntry location="D:\generator\mysql-connector-java-5.1.30.jar" />       <!-- <classPathEntry location="C:\oracle\product\10.2.0\db_1\jdbc\lib\ojdbc14.jar" />-->      <context id="DB2Tables" targetRuntime="MyBatis3">          <commentGenerator>              <property name="suppressAllComments" value="true" />          </commentGenerator>          <!-- 数据库链接URL、用户名、密码 -->           <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/test02?characterEncoding=utf8" userId="root" password="root">           <!--<jdbcConnection driverClass="oracle.jdbc.driver.OracleDriver" connectionURL="jdbc:oracle:thin:@localhost:1521:orcl" userId="msa" password="msa">-->          </jdbcConnection>          <javaTypeResolver>              <property name="forceBigDecimals" value="false" />          </javaTypeResolver>          <!-- 生成模型的包名和位置 -->          <javaModelGenerator targetPackage="andy.model" targetProject="D:\generator\src">              <property name="enableSubPackages" value="true" />              <property name="trimStrings" value="true" />          </javaModelGenerator>          <!-- 生成的映射文件包名和位置 -->          <sqlMapGenerator targetPackage="andy.mapping" targetProject="D:\generator\src">              <property name="enableSubPackages" value="true" />          </sqlMapGenerator>          <!-- 生成DAO的包名和位置 -->          <javaClientGenerator type="XMLMAPPER" targetPackage="andy.dao" targetProject="D:\generator\src">              <property name="enableSubPackages" value="true" />          </javaClientGenerator>          <!-- 要生成那些表(表是已经存在的)(更改tableName和domainObjectName就可以) -->          <table tableName="emps" domainObjectName="Emps" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false" />        <!-- <table tableName="course_info" domainObjectName="CourseInfo" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false" />  -->        <!--<table tableName="course_user_info" domainObjectName="CourseUserInfo" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false" /> -->      </context>  </generatorConfiguration>

注意文件路径必须正确
将生成问加你copy到项目文件中

需要创建表格及模拟导入数据：

DROP TABLE IF EXISTS  emps;  CREATE TABLE emps (id int(10) NOT NULL, name varchar(30) NOT NULL, age int(10) NOT NULL, salary float NOT NULL, PRIMARY KEY (id)) ENGINE=InnoDB DEFAULT CHARSET=utf8;insert into emps(id,name,age,salary) values (1,'zjx',21,100);insert into emps(id,name,age,salary) values (2,'zht',22,110);insert into emps(id,name,age,salary) values (3,'qqq',23,120);insert into emps(id,name,age,salary) values (4,'www',24,130);insert into emps(id,name,age,salary) values (5,'aaa',25,140);insert into emps(id,name,age,salary) values (6,'qzzzqq',26,150)

3、配置文件

工程配置文件结构：

文件说明：
1>jdbc.properties:

driver=com.mysql.jdbc.Driverurl=jdbc:mysql://127.0.0.1:3306/test02?characterEncoding=utf8&zeroDateTimeBehavior=convertToNullusername=rootpassword=root#定义初始连接数  initialSize=0#定义最大连接数 maxActive=20#定义最大空闲  maxIdle=20#定义最小空闲  minIdle=1#定义最长等待时间  maxWait=60000  

2>log4j.properties:

#定义LOG输出级别  log4j.rootLogger=INFO,Console,File  #定义日志输出目的地为控制台  log4j.appender.Console=org.apache.log4j.ConsoleAppender  log4j.appender.Console.Target=System.out  #可以灵活地指定日志输出格式，下面一行是指定具体的格式  log4j.appender.Console.layout = org.apache.log4j.PatternLayout  log4j.appender.Console.layout.ConversionPattern=[%c] - %m%n  #文件大小到达指定尺寸的时候产生一个新的文件  log4j.appender.File = org.apache.log4j.RollingFileAppender  #指定输出目录  log4j.appender.File.File = logs/ssm.log  #定义文件最大大小  log4j.appender.File.MaxFileSize = 10MB  # 输出所以日志，如果换成DEBUG表示输出DEBUG以上级别日志  log4j.appender.File.Threshold = ALL  log4j.appender.File.layout = org.apache.log4j.PatternLayout  log4j.appender.File.layout.ConversionPattern =[%p] [%d{yyyy-MM-dd HH\:mm\:ss}][%c]%m%n  

3>applicationContext-dao.xml:

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"    xmlns:context="http://www.springframework.org/schema/context"    xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:task="http://www.springframework.org/schema/task"    xmlns:tx="http://www.springframework.org/schema/tx"    xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd          http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.0.xsd          http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd          http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd          http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">    <!-- 引入配置文件 -->    <bean id="propertyConfigurer"        class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">        <property name="location" value="classpath:jdbc.properties" />    </bean>    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"        destroy-method="close">        <property name="driverClassName" value="${driver}" />        <property name="url" value="${url}" />        <property name="username" value="${username}" />        <property name="password" value="${password}" />        <!-- 连接池最大数量 -->        <property name="maxActive" value="30"></property>        <!-- 连接池最大空闲 -->        <property name="maxIdle" value="5"></property>    </bean>    <!--spring与mybatis整合 -->    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">        <property name="dataSource" ref="dataSource" />        <!-- 自动扫描mapping.xml文件 -->        <!-- <property name="mapperLocations" value="classpath:com/ssm/mapping/*.xml"></property> -->        <!-- 全局配置 -->        <!-- 若不保留mybatis配置文件用上面那条替换这一条 -->        <property name="configLocation" value="classpath:sqlMapConfig.xml" />    </bean>    <!-- DAO接口所在包名，Spring会自动查找其下的类 -->    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">        <!-- 扫描包路径，需要扫描多个包中间用逗号隔开 -->        <property name="basePackage" value="andy.dao" />        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>    </bean></beans>

4>applicationContext-services.xml:

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"    xmlns:context="http://www.springframework.org/schema/context"    xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:task="http://www.springframework.org/schema/task"    xmlns:tx="http://www.springframework.org/schema/tx"    xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd          http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.0.xsd          http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd          http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd          http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">    <!-- 自动扫描 -->    <context:component-scan base-package="andy.service.impl" /></beans>

5>applicationContext-transaction.xml:

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"    xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:task="http://www.springframework.org/schema/task"    xmlns:tx="http://www.springframework.org/schema/tx"    xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd          http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.0.xsd          http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd          http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd          http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">    <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->    <bean id="transactionManager"        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">        <!-- 数据源dataSource在applicationContext-dao.xml中配置了 -->        <property name="dataSource" ref="dataSource" />    </bean>    <!-- 启用事务 -->    <tx:annotation-driven transaction-manager="transactionmanager" /></beans>

6>sqlMapConfig.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>    <mappers>        <!-- 注册empsMapper.xml文件 -->        <mapper resource="andy/mapping/EmpsMapper.xml" />    </mappers></configuration>  

7>spring-mvc.xml:

<?xml version="1.0" encoding="UTF-8"?>  <beans xmlns="http://www.springframework.org/schema/beans"      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"      xmlns:context="http://www.springframework.org/schema/context"      xmlns:mvc="http://www.springframework.org/schema/mvc"      xsi:schemaLocation="http://www.springframework.org/schema/beans                            http://www.springframework.org/schema/beans/spring-beans-4.0.xsd                            http://www.springframework.org/schema/context                            http://www.springframework.org/schema/context/spring-context-4.0.xsd                            http://www.springframework.org/schema/mvc                            http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">    <!-- 自动扫描该包，使SpringMVC认为包下用了@controller注解的类是控制器 -->    <context:component-scan base-package="andy.controller" />    <!-- 处理静态资源 和解放MVC的原有功能-->      <mvc:default-servlet-handler/>      <mvc:annotation-driven>   </mvc:annotation-driven>     <!--避免IE执行AJAX时，返回JSON出现下载文件 -->    <bean id="mappingJacksonHttpMessageConverter"        class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">        <property name="supportedMediaTypes">            <list>                <value>text/html;charset=UTF-8</value>            </list>        </property>    </bean>    <!-- 启动SpringMVC的注解功能，完成请求和注解POJO的映射 -->    <bean        class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">        <property name="messageConverters">            <list>                <ref bean="mappingJacksonHttpMessageConverter" /> <!-- JSON转换器 -->            </list>        </property>    </bean>    <!-- 定义跳转的文件的前后缀 ，视图模式配置 -->    <bean        class="org.springframework.web.servlet.view.InternalResourceViewResolver">        <!-- 这里的配置我的理解是自动给后面action的方法return的字符串加上前缀和后缀，变成一个 可用的url地址 -->        <property name="prefix" value="/WEB-INF/jsp/" />        <property name="suffix" value=".jsp" />    </bean>    <!-- 配置文件上传，如果没有使用文件上传可以不用配置，当然如果不配，那么配置文件中也不必引入上传组件包 -->    <bean id="multipartResolver"        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">        <!-- 默认编码 -->        <property name="defaultEncoding" value="utf-8" />        <!-- 文件大小最大值 -->        <property name="maxUploadSize" value="10485760000" />        <!-- 内存中的最大值 -->        <property name="maxInMemorySize" value="40960" />    </bean></beans>  

4、service接口及类

文件结构：

1>接口IEmpsService

package andy.service;import andy.model.Emps;public interface IEmpsService {      public Emps getEmpsById(int id);  }  

2>实现类EmpsServiceImpl

package andy.service.impl;import javax.annotation.Resource;import org.springframework.stereotype.Service;import andy.dao.EmpsMapper;import andy.model.Emps;import andy.service.IEmpsService;@Service("empsService")  public class EmpsServiceImpl implements IEmpsService {      @Resource      private EmpsMapper empsDao;      @Override    public Emps getEmpsById(int id) {          // TODO Auto-generated method stub          return this.empsDao.selectByPrimaryKey(id);      }    }  

5、controller类

文件结构：

类EmpsController：

package andy.controller;import javax.annotation.Resource;import javax.servlet.http.HttpServletRequest;  import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.servlet.ModelAndView;import org.springframework.stereotype.Controller; import andy.model.Emps;import andy.service.IEmpsService;  @Controller  @RequestMapping("/emps")  // url路径public class EmpsController {      @Resource      private IEmpsService empsService;      @RequestMapping("/getById")  //url路径    public ModelAndView  getById(HttpServletRequest request,ModelAndView model){          int id = Integer.parseInt(request.getParameter("id"));          Emps emps = this.empsService.getEmpsById(id);          model.addObject("emps", emps); //视图模型，向页面传递对象        model.setViewName("empsList");  //指定视图文件，路径在spring-mvc下指定        return model;      }  } 

DEMO下载路径：
https://github.com/duangYiXia/SSM-DEMO/