basedao.java

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package com.dao;

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

/**
 * 基类
 * 
 * @author Administrator
 * 
 */
public class BaseDao {
	protected Connection conn;
	protected PreparedStatement pstmt;
	protected ResultSet rs;
	protected String sql;

	/**
	 * 初使连接串
	 */
	protected void initConn() {
		try {
			Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		try {
			conn = DriverManager.getConnection("jdbc:sqlserver://localhost:1433;databaseName=flight", "sa", "san");
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	/**
	 * 释放资源
	 */
	protected void closeConn() {
		if (conn != null) {
			try {
				conn.close();
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}
}