利用Mybatis的配置文件获取SqlSessionFactory

import java.io.IOException;
import java.io.Reader;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

public class GetSqlSessionFactory {
    private static SqlSessionFactory sqlSessionFactory;

    static{
        String rs="mybatis-config.xml";
        try {
            Reader reader=Resources.getResourceAsReader(rs);
            SqlSessionFactoryBuilder builder=new SqlSessionFactoryBuilder();
            sqlSessionFactory=builder.build(reader);
            //sqlSessionFactory.getConfiguration().addMappers("com.hengtian.mapper");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public  static SqlSessionFactory getInstance(){
        return sqlSessionFactory;
    }

}