jdbchelp.java

jsp+servlet网上购物,是一个实现mvc的网站

package com.ebook.Util;
import java.sql.Connection;
import java.sql.SQLException;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.sql.DataSource;
public class JdbcHelp
{
    private DataSource dataSource;
    public JdbcHelp() throws NamingException
    {
        Context context = new InitialContext();
        Context applicationEnv = (Context)context.lookup("java:comp/env");
        dataSource = (DataSource)applicationEnv.lookup("jdbc/ebook");
    }

    public Connection getConnection() throws SQLException
    {
        return dataSource.getConnection();
    }
}