mybatis 读取全局配置文件的java类

package db;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;public class DBUtil {public static SqlSessionFactory sqlSessionFactory;static {String resource = "Mybatis-config.xml";InputStream inputStream = null;try {inputStream = Resources.getResourceAsStream(resource);sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}finally {if(inputStream!=null) {try {inputStream.close();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}}public static SqlSession getSession() {return sqlSessionFactory.openSession();}}