database.java

本程序用jsp+servlet+javaBean+EJB实现交友系统

package com.database;

import java.sql.*;
/**
	*这里将访问数据库的各种操作封装成一个类
 */
public class DataBase {
	protected Connection conn=null;	//Connection接口
	protected Statement stmt=null;	//Statement接口
	protected ResultSet rs=null;	//记录结果集
	protected PreparedStatement prepstmt =null;//PreparedStatement接口
	protected String sql;			//sql语句
	protected boolean Connect=true;//与数据库连接标识
	
	public DataBase(){
		try{
			sql="";
			DBConnection db=new DBConnection();
			conn=db.getConnection();
			stmt=conn.createStatement();
		}catch(Exception e){
			System.out.print(e);
			Connect=false;
		}
	}
	
	public Connection getConn() {
		return conn;
	}
	public boolean isConnect() {
		return Connect;
	}
	public PreparedStatement getPrepstmt() {
		return prepstmt;
	}
	public ResultSet getRs() {
		return rs;
	}
	public String getSql() {
		return sql;
	}
	public Statement getStmt() {
		return stmt;
	}
	public boolean excute() throws Exception{
		return false;
	}
	public boolean insert() throws Exception{
		return false;
	}
	public boolean update() throws Exception{
		return false;
	}
	public boolean delete() throws Exception{
		return false;
	}
	public boolean query() throws Exception{
		return false;
	}
	public void close() throws SQLException{
		if(stmt!=null){
			stmt.close();
			stmt=null;
		}
		conn.close();
		conn=null;
	}
}