# Global logging configuration
log4j.rootLogger=DEBUG, stdout
# 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

<?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><environments default="development"><environment id="development"><transactionManager type="JDBC" /><dataSource type="POOLED"><property name="driver" value="oracle.jdbc.driver.OracleDriver" /><property name="url" value="？？？？？？？不能写哦" /><property name="username" value="crpm" /><property name="password" value="crpm" /></dataSource></environment></environments>
</configuration>

package com.ahzx.daoImp;import java.io.IOException;
import java.io.InputStream;import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;import com.ahzx.dao.ChartDao;
import com.ahzx.entity.Example;public class ChartDaoImp implements ChartDao{//建立一个会话工厂private SqlSessionFactory sqlSessionFactory;@Override　　//这里实现调用并返回public Example getSelectCustomerName(String docno) {SqlSession session=sqlSessionFactory.openSession();Example exam=session.selectOne("test.getSelectCustomerName",docno);return exam;}　　//构造方法加载工厂初始化方法public ChartDaoImp(){createFactory();}//对象工厂初始化public void createFactory(){//读取配置文件String resource="SqlMapConfig.xml";InputStream in;try {in = Resources.getResourceAsStream(resource);sqlSessionFactory=new SqlSessionFactoryBuilder().build(in);} catch (IOException e) {    e.printStackTrace();}}}

package com.ahzx.demo;import com.ahzx.daoImp.ChartDaoImp;
import com.ahzx.entity.Example;public class Test {public static void main(String[] args) {　　　　//Example类就是自己定义的一个实体类，即和表中字段一 一对应的String docno="BG2016111400000050";ChartDaoImp chartdaoimp=new ChartDaoImp();Example exam=chartdaoimp.getSelectCustomerName(docno);System.out.println(exam.getObjectname())；}}