匹配session

 1 package dl.zhang.test.util;
 2 
 3 import java.io.IOException;
 4 import java.io.Reader;
 5 import org.apache.ibatis.io.Resources;
 6 import org.apache.ibatis.session.SqlSession;
 7 import org.apache.ibatis.session.SqlSessionFactory;
 8 import org.apache.ibatis.session.SqlSessionFactoryBuilder;
 9 
10 public class SessionUtil {
11 
12     private static ThreadLocal<SqlSession> th_session = new ThreadLocal<SqlSession>();
13 
14     private static SqlSessionFactory ssf = null;
15 
16     static {
17         try {
18             //mybatis.cfg.xml是核心配置的名字要根据自己核心配置名字去填写
19             Reader reader = Resources.getResourceAsReader("mybatis.cfg.xml");
20 
21             ssf = new SqlSessionFactoryBuilder().build(reader);
22 
23         } catch (IOException e) {
24 
25             e.printStackTrace();
26         }
27     }
28 
29     public static SqlSession getCurrentSession() {
30         SqlSession session = th_session.get();
31         if (session == null) {
32             session = ssf.openSession();
33             th_session.set(session);
34         }
35         return session;
36     }
37 
38     public static void closeSession() {
39         SqlSession session = th_session.get();
40         if (session != null) {
41             session.close();
42             th_session.set(null);
43         }
44 
45     }
46 }