1.pom引入：
<dependency>
<groupId>com.xiaoju.kefu</groupId>
<artifactId>mybatis-support</artifactId>
<version>1.0.0-SNAPSHOT</version>
</dependency>2.web.xml 修改为：
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="3.0"
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"
metadata-complete="false">3.新建db_config.properties
masterUrl=jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&transformedBitIsBoolean=true
#有从库写入下面的salveUrl，查询请求会走salve进行，没有可以去掉salveUrl的配置
salveUrl=jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&transformedBitIsBoolean=true
username=root
password=4.新建mybatis-config.xml配置
<?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="cacheEnabled" value="false"/>
<setting name="lazyLoadingEnabled" value="true"/>
<setting name="multipleResultSetsEnabled" value="true"/>
<setting name="useColumnLabel" value="true"/>
<setting name="useGeneratedKeys" value="false"/>
<setting name="autoMappingBehavior" value="PARTIAL"/>
<setting name="defaultExecutorType" value="SIMPLE"/>
<setting name="defaultStatementTimeout" value="25"/>
<setting name="safeRowBoundsEnabled" value="false"/>
<setting name="mapUnderscoreToCamelCase" value="true"/>
<setting name="localCacheScope" value="STATEMENT"/>
<setting name="jdbcTypeForNull" value="OTHER"/>
<setting name="lazyLoadTriggerMethods" value="equals,clone,hashCode,toString"/>
</settings>
<typeHandlers>
<typeHandler javaType="string" handler="com.github.mybatis.handler.StringTypeUtf8mb4Handler"/>
</typeHandlers>
<plugins>
<!-- 主从分离插件 -->
<plugin interceptor="com.github.mybatis.interceptor.MasterSlaveInterceptor"/>
<!-- 分页插件 -->
<plugin interceptor="com.github.mybatis.interceptor.PaginationAutoMapInterceptor"/>
</plugins>
</configuration>5.新建spring-db.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://www.springframework.org/schema/beans"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
<bean id="proxyTransactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="proxyDataSource"/>
</bean>
<bean id="proxyDataSource" class="com.github.mybatis.spring.DynamicDataSource">
<!--修改为你自己定义的数据库配置文件 -->
<property name="configName" value="db_config.properties"/>
</bean>
<!-- define the SqlSessionFactory -->
<bean id="proxySqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="proxyDataSource"/>
<!--修改为你自己定义的pojo类路径 -->
<property name="typeAliasesPackage" value="com.xiaoju.kefu.vectorsigma.entity"/>
<!--修改为你自己定义的mybatis-config的配置文件名称 -->
<property name="configLocation" value="classpath:mybatis-config.xml"/>
<!--<property name="mapperLocations" value="classpath:mybatis/mappers/*.xml"/>-->
</bean>
<!-- scan for mapper and let them be autowired -->
<bean class="com.github.mybatis.spring.ScannerConfigurer">
<!--修改为你自己定义的dao的包名称 -->
<property name="basePackage" value="com.xiaoju.kefu.vectorsigma.mapper"/>
<property name="sqlSessionFactoryBeanName" value="proxySqlSessionFactory"/>
</bean>
</beans>6.编码要点：
6.1 pojo 需要继承IdEntity，例如：
@Table(name="vector_sigma_user")
public class User extends IdEntity {
/**
*
*/
private static final long serialVersionUID = 4058901424378128073L;
@Column(name="name")
private String name;
// getter and setter
}6.2 dao 需要extends ICrudMapper 例如：
public interface UserMapper extends ICrudMapper<User> {
}7.分页实例
@Test
public void testPagination() throws Exception {
SqlSession session = sqlSessionFactory.openSession();
try {
TestPageMapper mapper = session.getMapper(TestPageMapper.class);
assertEquals(1, mapper.insert(new TestPage("github", "github-process")));
assertEquals(1, mapper.insert(new TestPage("oschina", "oschina-process")));
assertEquals(2, mapper.countAll());
Page<TestPage> page1 = new Page<TestPage>(1, 1, false);
mapper.pagination(page1);
//System.out.println(page1);
TestPage p1 = page1.get(0);
assertEquals(1, p1.getId().intValue());
assertEquals("github-process", p1.getName());
Page<TestPage> page2 = new Page<TestPage>(2, 1);
mapper.pagination(page2);
//System.out.println(page2);
TestPage p2 = page2.get(0);
assertEquals(2, p2.getId().intValue());
assertEquals("oschina-process", p2.getName());
} finally {
CloseableUtil.closeQuietly(session);
}