SqlSessionFactoryBuilder、SqlSessionFactory、SqlSession作用域（Scope）和生命周期

1 public class SessionFactory {
2     public static SqlSession getSqlSession(String resource) throws IOException{
3         InputStream inputStream = Resources.getResourceAsStream(resource);
4         SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
5         SqlSession sqlSession = sqlSessionFactory.openSession();
6         
7         return sqlSession;
8     }
9 }

 1 package day_8_mybatis.util;
 2 
 3 import java.io.InputStream;
 4 
 5 import org.apache.ibatis.session.SqlSessionFactory;
 6 import org.apache.ibatis.session.SqlSessionFactoryBuilder;
 7 
 8 /**
 9  * @author turbo
10  *
11  * 2016年10月26日
12  */
13 public class SessionFactory2 {
14     private static SqlSessionFactory sqlSessionFactory;
15     
16     public static synchronized SqlSessionFactory getInstance(InputStream inputStream){
17         if (null == sqlSessionFactory){
18             sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
19         }
20         
21         return sqlSessionFactory;
22     }
23 }

 1 package day_8_mybatis;
 2 
 3 import java.io.IOException;
 4 import java.io.InputStream;
 5 
 6 import org.apache.ibatis.io.Resources;
 7 import org.apache.ibatis.session.SqlSession;
 8 
 9 import day_8_mybatis.util.SessionFactory2;
10 
11 /**
12  * 客户端
13  * 
14  * @author turbo
15  *
16  * 2016年10月26日
17  */
18 public class Main {
19 
20     /**
21      * @param args
22      * @throws IOException
23      */
24     public static void main(String[] args) throws Exception {
25         String resource = "day_8_mybatis/mybatis-config.xml"; // 获取mybatis配置文件路径
26         InputStream inputStream = Resources.getResourceAsStream(resource);
27         SqlSession sqlSession = SessionFactory2.getInstance(inputStream).openSession();
28 
29     }
30 
31 }