<?xml version="1.0" encoding="UTF-8" ?>
<Context>
	<Resource name = "jdbc/book"
              auth = "Container"
              type = "javax.sql.DataSource"
              driverClassName = "com.mysql.jdbc.Driver"
              url      = "jdbc:mysql://localhost/book"
              username = "namari"
              password = "password">
	</Resource>
</Context>

package chapter14;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.*;

import javax.naming.InitialContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.sql.*;

/**
 * Servlet implementation class All
 */
@WebServlet("/All")
public class All extends HttpServlet {
	private static final long serialVersionUID = 1L;

	/**
	 * @see HttpServlet#HttpServlet()
	 */
	public All() {
		super();
		// TODO Auto-generated constructor stub
	}

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
	 *      response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		PrintWriter out = response.getWriter();

		try {
			//Get connection
			InitialContext ic = new InitialContext();
			DataSource ds = (DataSource) ic.lookup("java:/comp/env/jdbc/book");
			Connection con = ds.getConnection();

			//SQL statement transmission
			PreparedStatement st = con.prepareStatement("select * from product");
			//Execution & result reception
			ResultSet rs = st.executeQuery();

			//Data display
			while (rs.next()) {
				out.println(rs.getInt("id") + ":" + rs.getString("name") + ":" + rs.getInt("price"));
			}

			//Database disconnection
			st.close();
			con.close();

		} catch (Exception e) {
			//Connection / SQL statement error
			e.printStackTrace(out);

		} // try
	}

}

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