Jdbc工具类 (oracle,mysql,postgis)

package ;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class GetBikeInfoByOracle {

    public static Connection getConn(){
    	Connection conn = null;
    	try{
	 	   Class.forName("oracle.jdbc.driver.OracleDriver");
		   conn = DriverManager.getConnection("jdbc:oracle:thin:@127.0.0.1:1521:xxx.com", "mgis", "mgis"); 


                        Class.forName("com.mysql.jdbc.Driver");
			conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/mydb", "root", "123");



			Class.forName("org.postgresql.Driver");
			conn = DriverManager.getConnection("jdbc:postgresql://192.168.8.26:5432/posttest", "postgres", "postgres");




    		
    	}catch(Exception e){
    		e.printStackTrace();
    	}
    	return conn;
    }
    
    public static void closeConn(Connection conn){
    	if(conn !=null){
    		try {
				conn.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
    	}
    }
    
    public static void closeStatment(Statement stat){
    	if(stat !=null){
    		try {
    			stat.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
    	}
    }
    
    public static void closeRs(ResultSet rs){
    	if(rs !=null){
    		try {
				rs.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
    	}
    }    
    


	 public static void main(String[] args) {
		 Connection conn = getConn();
		 System.out.println("conn ---------- "+conn);

	 }

	
	
}