jdbc.properties,以及读取配置信息

public void getValue() 
    { 
        //System.out.println("..//"+System.getProperty("user.dir")+"//webapps");  
         
        try { 
            String path = this.getClass().getClassLoader().getResource("/").getPath(); 
            String url = path.replaceAll("%20", " "); 
            FileInputStream fis = new FileInputStream(url+"config.properties"); 
            Properties prop = System.getProperties(); 
            try { 
                prop.load(fis); 
                //赋值  
                this.DRIVER = prop.getProperty("driver"); 
                this.URL = prop.getProperty("url"); 
                this.USER = prop.getProperty("user"); 
                this.PASSWORD =prop.getProperty("password"); 
                 
            } catch (IOException e) { 
                // TODO Auto-generated catch block  
                e.printStackTrace(); 
            } 
        } catch (FileNotFoundException e) { 
            // TODO Auto-generated catch block  
            e.printStackTrace(); 
        } 
    } 



.jdbc.properties
driver=com.microsoft.jdbc.sqlserver.SQLServerDriver
url=jdbc:microsoft:sqlserver://Ip地址:1433;databaseName=test
user=test
password=test

2.一个Servlet
import java.io.PrintStream;
import java.sql.*;
import java.util.ResourceBundle;

public class DBOperator
{

    public DBOperator()
    {
    }

    public static void main(String args[])
    {
        Connection con = getConnection();
        System.out.println("connection success");
        closeConnection(con);
        System.out.println("close success");
    }

    public static Connection getConnection()
    {
        try
        {
            return DriverManager.getConnection(url, user,

password);
        }
        catch(SQLException e)
        {
            e.printStackTrace();
        }
        return null;
    }

    public static void closeConnection(Connection con)
    {
        try
        {
            if(con != null)
                con.close();
        }
        catch(SQLException e)
        {
            e.printStackTrace();
        }
    }

    private static String url;
    private static String user;
    private static String password;

    static
    {
        ResourceBundle bundle = ResourceBundle.getBundle("路径");
        try
        {
            Class.forName(bundle.getString("driver"));
        }
        catch(ClassNotFoundException e)
        {
            e.printStackTrace();
        }
        url = bundle.getString("url");
        user = bundle.getString("user");
        password = bundle.getString("password");
    }
}