db.java

来自「这适合利用java开发struts程序的初学者借鉴的代码」· Java 代码 · 共 58 行

package com.struts.usermgr.utils;

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

public class DB {
	
	public static Connection getConnection(){
		Connection conn = null ;
		try{
			Class.forName("com.mysql.jdbc.Driver") ;
			conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/drp?user=root&password=dinglinbin");
		}catch(ClassNotFoundException e){
			e.printStackTrace() ;
		}catch(SQLException e){
			e.printStackTrace() ;
		}
		return conn ;
	}
	
	public static void closeConnection(Connection conn){
		try{
			if(conn != null){
				conn.close() ;
				conn = null ;
			}
		}catch(SQLException e ){
				e.printStackTrace();
		}
	}
	
	public static void closeStmt(Statement stmt){
		try{
			if(stmt != null){
				stmt.close() ;
				stmt = null ;
			}
		}catch(SQLException e){
			e.printStackTrace() ;
		}
	}
	
	public static void closeRs(ResultSet rs){
		try{
			if(rs != null){
				rs.close() ;
				rs = null ;
			}
		}catch(SQLException e){
			e.printStackTrace() ;
		}
	}

}