dblistener.java

网上购书系统

package datamanage;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;


public class DBListener extends HttpServlet implements ServletContextListener{

    public void contextInitialized(ServletContextEvent sce) {
        DBInfo.driver = sce.getServletContext().getInitParameter("driver");
        DBInfo.url = sce.getServletContext().getInitParameter("url");
        DBInfo.username = sce.getServletContext().getInitParameter("username");

        String passworld = sce.getServletContext().getInitParameter("passworld");
        if (passworld == null) {
            passworld = "";
        }
        DBInfo.passworld = passworld;
    }


    public void contextDestroyed(ServletContextEvent sce) {

    }
}