jdbc鏈接數據庫

 public static void main(String[] args) throws Exception {
  // TODO Auto-generated method stub
     Class.forName("oracle.jdbc.driver.OracleDriver");
     Connection con =DriverManager.getConnection("jdbc:oracle:thin:@172.18.2.248:1521:leoorcl","bruce","bruce");
     Statement st = con.createStatement();
     ResultSet rs = st.executeQuery("select * from userr");
     while(rs.next()){
       
      System.out.println("money:"+rs.getString("money"));
      System.out.println("id:"+rs.getString(1));
     
     }

      if(rs == null){
          rs.close();
        }
        if(st == null){
         st.close();
       }
        if(con == null){
         con.close();
       }
 }