dbutil.java

jsp 信息管理系统 jsp 信息管理系统 jsp 信息管理系统

package com.test.util;

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

public class DBUtil {

	private static String driver = "com.mysql.jdbc.Driver";
	private static String url = "jdbc:mysql://localhost:3306/test";
	private static String username = "root";
	private static String pasword = "root";
	private static Connection conn;
	private static Statement stmt;

	public static void init() {
		try {
			Class.forName(driver);
		} catch (ClassNotFoundException e) {
			e.printStackTrace();
		}
	}

	public static Connection getConnection() {
		init();
		try {
			conn = DriverManager.getConnection(url, username, pasword);
		} catch (SQLException e) {
			e.printStackTrace();
		}
		return conn;
	}

	public static Statement getStatement() {
		try {
			stmt = getConnection().createStatement();
		} catch (SQLException e) {
			e.printStackTrace();
		}
		return stmt;
	}

	public static void close() {
		if (stmt != null) {
			try {
				stmt.close();
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		if (conn != null) {
			try {
				conn.close();
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}
}