Weblogicの接続プール/データソースから接続を取得する方法

    //JDBC ：，   
        public static Connection getConnection(){    
            Connection conn = null;   
            // ， 。   
            String url = "jdbc:postgresql://127.0.0.1/getseus";    
            String userName = "ra";    
            String pwd = "ra";    
            try {    
                Class.forName("org.postgresql.Driver").newInstance();    
                conn = DriverManager.getConnection(url,userName,pwd);    
            } catch (Exception e){    
                e.printStackTrace();    
            }    
                
            return conn;    
        }    
    //JNDI         
        public static Connection getConnectionFromDS(){    
            Connection conn = null;    
            Context ctx = null;    
            try {    
                ctx = new InitialContext();    
                DataSource ds = (DataSource)ctx.lookup("JNDIPG");    
                conn = ds.getConnection();    
            } catch (Exception e) {    
                e.printStackTrace();    
            }              
            return conn;    
                
        }