initslt.java

大象购物管理程序

package com.comm;

import java.net.*;

import javax.servlet.*;
import javax.servlet.http.*;
import javax.sql.*;

import com.comm.db.*;
import com.comm.util.*;

public class InitSlt extends HttpServlet {
    private static final String CONTENT_TYPE = "text/html; charset=UTF-8";


    //Initialize global variables
    public void init() throws ServletException {

        String driver = getInitParameter("driver");
        String dbUrl = getInitParameter("dbUrl");
        String dbUser = getInitParameter("dbUser");
        String dbPwd = getInitParameter("dbPwd");

        setDataSource(driver, dbUrl, dbUser, dbPwd);
    }

    //Clean up resources
    public void destroy() {
    }

    private void setDataSource(String driver, String dbUrl,
                               String dbUser, String dbPwd) {
        try {
            DataSource ds = DSFactory.getDataSource(driver, dbUrl, dbUser,
                    dbPwd, 5);

            DBFactory.getDBI().setDatasource(ds);
        } catch (Exception ex) {
            LoggerUtil.error(ex);
        }
    }

    public String getWebRoot() {
        String strClassName = getClass().getName();
        String strpackageName = "";
        if (getClass().getPackage() != null) {
            strpackageName = getClass().getPackage().getName();
        }
        String strClassFileName = "";
        if (!"".equals(strpackageName)) {
            strClassFileName = strClassName.substring(strpackageName.length() +
                    1, strClassName.length());
        } else {
            strClassFileName = strClassName;
        }
        URL url = null;
        url = getClass().getResource(strClassFileName + ".class");
        String strURL = url.toString();
        strURL = strURL.substring(strURL.indexOf("/") + 1,
                                  strURL.indexOf("WEB-INF"));
        strURL = strURL.replaceAll("%20", " ");
        return strURL;
    }
}