oracle连接封装方法

public static void updateSqlOracle(String sqlstr,String linkIP,String username,String password) throws SQLException, ClassNotFoundException{

Class.forName("oracle.jdbc.driver.OracleDriver");
String url = "jdbc:oracle:thin:@"+linkIP+":1521:GVDB";// 设置连接字符串  GVDB为实例名 linkIP为连接地址
Connection con=java.sql.DriverManager.getConnection(url,username,password);
Statement stmt = con.createStatement();
ResultSet rs = stmt.executeQuery(sqlstr);

rs.close();
stmt.close();
con.close();

}