工程目录结构

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mybatis逆向工程

逆向工程配置文件

generatorConfig.xml文件

<?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">
        <!-- 是否去掉注释 -->
        <commentGenerator>
            <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="驱动类"
            connectionURL="连接地址" userId="用户名"
            password="密码">
        </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POJO类的位置 -->
        <javaModelGenerator targetPackage="生成POJO类的位置"
            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="生成mapper映射文件的位置"
            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="mapper接口生成的位置" 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 -->
        <!-- tableName:表名
        domainObjectName：生成java对象的类名
         -->
        <table tableName="user" 
                domainObjectName="User"
                enableUpdateByExample="false"
                enableDeleteByExample="false">
        </table>
        <table tableName="app_version" 
                domainObjectName="AppVersion"
                enableUpdateByExample="false"
                enableDeleteByExample="false">
        </table>
        <table tableName="app_info" 
                domainObjectName="AppInfo"
                enableUpdateByExample="false"
                enableDeleteByExample="false">
        </table>
        <table tableName="app_category" 
                domainObjectName="AppCategory"
                enableUpdateByExample="false"
                enableDeleteByExample="false">
        </table>
    </context>
</generatorConfiguration>

逆向工程代码

public class GeneratorSqlmap {
    public void generator() throws Exception {
        List<String> warnings = new ArrayList<String>();
        boolean overwrite = true;
        // 指定逆向工程配置文件
        File configFile = new File("generatorConfig.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);
    }

    public static void main(String[] args) throws Exception {
        try {
            GeneratorSqlmap generatorSqlmap = new GeneratorSqlmap();
            generatorSqlmap.generator();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

测试类（可以在ssm整合的时候测试）

public static void main(String[] args) throws IOException {
        SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(Resources.getResourceAsStream("mybatis-config.xml"));
        SqlSession session = factory.openSession();
        UserMapper mapper = session.getMapper(UserMapper.class);
        UserExample example=new UserExample();
        example.createCriteria().andUserNameEqualTo("dev2").andUserPwdEqualTo("123");
        List<User> list = mapper.selectByExample(example);
        System.out.println(list);
    }

spring-mybatis整合

1、applicationContext-mybatis.xml文件

<?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:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/mvc 
        http://www.springframework.org/schema/mvc/spring-mvc.xsd
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd">

    <context:property-placeholder location="classpath:properties/db.properties"/>      
    <!-- 配置数据 -->
    <bean class="com.mchange.v2.c3p0.ComboPooledDataSource" id="dataSource">
        <property name="driverClass" value="${jdbc.driver}"></property>
        <property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>
        <property name="user" value="${jdbc.user}"></property>
        <property name="password" value="${jdbc.password}"></property>
    </bean>     
    <!-- 配置SqlSessionFactoryBean：用来创建SqlSessionFacotry,并且扫描xml文件-->
    <bean class="org.mybatis.spring.SqlSessionFactoryBean" id="sqlSessionFacotry">
        <!--注入数据源-->
        <property name="dataSource" ref="dataSource"></property>
        <!--配置别名，如果在下面的mybatis配置文件中有配置别名，那么这句可以不用-->
        <!-- <property name="typeAliasesPackage" value="com.hemi.bean"></property> -->
        <!--加载mybatis配置文件-->
        <property name="configLocation" value="classpath:spring/mybatis-config.xml"></property>
        <!-- 扫描mapper.xml -->
        <property name="mapperLocations" value="classpath:/mapper/*.xml"></property>
    </bean>
    <!-- 配置MapperScannerConfigurer：用来扫描mapper接口 --> 
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!-- 扫描mapper接口 -->
        <property name="basePackage" value="com.hemi.dao"/>
        <!--注入sqlSessionFacotry-->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFacotry"></property>
    </bean>
</beans>

2、mybatis-config.xml文件

<?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>
   <settings>
       <setting name="autoMappingBehavior" value="FULL"/>          
   </settings>
 </configuration>

3、db.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.jdbcUrl=jdbc:mysql://localhost:3306/appmanager?useUnicode=true&characterEncoding=utf-8
jdbc.user=root
jdbc.password=
jdbc.acquireIncrement=3
jdbc.initialPoolSize=10
jdbc.minPoolSize=2
jdbc.maxPoolSize=200
jdbc.maxIdleTime=1000

4、log4j.properties

# Global logging configuration
log4j.rootLogger=ERROR, stdout
# MyBatis logging configuration...
log4j.logger.com.hemi.controller=DEBUG
log4j.logger.com.hemi.dao=DEBUG
# Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

spring事务配置

applicationContext-tx.xml

<bean class="org.springframework.jdbc.datasource.DataSourceTransactionManager" id="transactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <aop:config>
        <aop:advisor advice-ref="txAdvicer" pointcut="execution(* com.hemi.service..*(..))"/>
    </aop:config>

    <tx:advice transaction-manager="transactionManager" id="txAdvicer">
        <tx:attributes>
            <tx:method name="select*" propagation="SUPPORTS" read-only="true"/>
            <tx:method name="delect*" propagation="REQUIRED"/>
            <tx:method name="update*" propagation="REQUIRED"/>
            <tx:method name="insert*" propagation="REQUIRED"/>
        </tx:attributes>
    </tx:advice>
</beans>

service层

applicationContext-service.xml

<context:component-scan base-package="com.hemi.service"/> 

springmvc整合

1、springmvc.xml

<mvc:annotation-driven/>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix" value="/WEB-INF/jsp/"></property>
    <property name="suffix" value=".jsp"></property>
</bean>

2、web.xml

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://java.sun.com/xml/ns/javaee"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
         id="WebApp_ID" version="3.0">
    <display-name>appmanager</display-name>
    <!-- 监听器加载配置文件 -->
    <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>

    <!-- 解决乱码问题 -->
     <filter>
        <filter-name>characterEncodingFilter</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>characterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
     </filter-mapping>

    <!-- 前端控制器 -->
    <servlet>
        <servlet-name>dispatherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>    
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springmvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
      </servlet>
      <servlet-mapping>
        <servlet-name>dispatherServlet</servlet-name>
        <url-pattern>/</url-pattern>
      </servlet-mapping>
</web-app>

mybatis分页插件

<plugins>
        <!--分页插件-->
        <plugin interceptor="com.github.pagehelper.PageHelper"/>
</plugins>