Hibernate opensession method: open a session

Grammar 1

openSession()

Example

SessionFactory sessionFactory = config.buildSessionFactory();
Session session = sessionFactory.openSession();

Grammar 2

openSession(Connection connection,Interceptor interceptor)

Example

Connection conn = null;
try{
  Class.forName("com.microsoft.jdbc.sqlserver.sqlServerDriver");  //加载数据库驱动
  String url = "jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=db_test
    Hibernate";  //定义连接数据库的url
    conn = DriverManager.getConnection(url,"sa","");  //获取数据库连接对象
}catch(Exception e){
  e.printStackTrace();
}  //MyIntereptor为自定义的实现Interceptor接口的拦截器
Interceptor it = new MyInterceptor();
Session session = sessionFactory.openSession(conn,it);  //打开Session

Grammar 3

openSession(Interceptor interceptor)throws HibernateException

Example

SessionFactory sessionFactory = config.buildSessionFactory();  //MyIntereptor为自定义的实现Interceptor接口的拦截器
Interceptor it = new MyInterceptor();
Session session = sessionFactory.openSession(it);

Grammar 4

openSession(Connection connection)

Example

Connection conn = null;  //定义参数Connection对象
try{
  Class.forName("com.microsoft.jdbc.sqlserver.sqlServerDriver");  //加载数据库驱动
  String url = "jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=db_testHibernate";
  conn = DriverManager.getConnection(url,"");
}catch(Exception e){
  e.printStackTrace();
}
Session session = sessionFactory.openSession(conn);  //打开Session