conndata.java

企业级的即时通软件。。java语言写的 这是服务端部份。

package edu.sccp.chat.dao;

import java.io.FileInputStream;
import java.sql.Connection;
import java.sql.DriverManager;

import java.sql.SQLException;
import java.util.Properties;

import javax.swing.JOptionPane;


public class ConnData {
  static	String driverClass;
  static    String url;
  static	String name;
  static	String password;
  static    FileInputStream fi;
  boolean flag=false;
  public static Connection co = null;
  static{	Properties p=new Properties();
	try{
	fi=new FileInputStream("edu/sccp/chat/dao/mdb.properties");
	p.load(fi);
	driverClass=p.getProperty("driverClass");
	url=p.getProperty("url");
	name=p.getProperty("username");
	password=p.getProperty("password");
	}catch(Exception e){
	}
  }
  public static Connection conn(){
	  
	  try {
		Class.forName(driverClass);//注册驱动类
		try {
			
			co=DriverManager.getConnection(url,name,password);//连接数据库
			
		} catch (SQLException e) {
			JOptionPane.showMessageDialog(null,"连接数据库不成功");
		}
	} catch (ClassNotFoundException e) {
		e.printStackTrace();
	}
	
	return co;
  }
}