See Account : Database « Servlets « Java






See Account

/*

MySQL and Java Developer's Guide

Mark Matthews, Jim Cole, Joseph D. Gradecki
Publisher Wiley,
Published February 2003, 
ISBN 0471269239

*/


import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.Statement;

import javax.naming.Context;
import javax.naming.InitialContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.sql.DataSource;

public class SeeAccount extends HttpServlet {

  public void doGet(HttpServletRequest inRequest,
      HttpServletResponse outResponse) throws ServletException,
      IOException {

    PrintWriter out = null;
    Connection connection = null;
    Statement statement = null;

    ResultSet rs;

    try {
      outResponse.setContentType("text/html");
      out = outResponse.getWriter();

      Context ctx = new InitialContext();
      DataSource ds = (DataSource) ctx
          .lookup("java:comp/env/jdbc/AccountsDB");
      connection = ds.getConnection();

      statement = connection.createStatement();
      rs = statement.executeQuery("SELECT * FROM acc_acc");
      ResultSetMetaData md = rs.getMetaData();

      out
          .println("<HTML><HEAD><TITLE>        Thumbnail Identification Record</TITLE></HEAD>");
      out.println("<BODY>");
      out.println("Account Information:<BR>");
      out.println("<table>");
      out.println("<tr><td>");
      for (int i = 1; i <= md.getColumnCount(); i++) {
        out.println("Column #" + i + "<BR>");
        out.println("getColumnName : " + md.getColumnName(i) + "<BR>");
        out.println("getColumnClassName : " + md.getColumnClassName(i)
            + "<BR>");
        out.println("getColumnDisplaySize : "
            + md.getColumnDisplaySize(i) + "<BR>");
        out.println("getColumnType : " + md.getColumnType(i) + "<BR>");
        out.println("getTableName : " + md.getTableName(i) + "<BR>");
        out.println("<HR>");
      }
      out.println("</BODY></HTML>");
    } catch (Exception e) {
      e.printStackTrace();
    }
  }

  public void doPost(HttpServletRequest inRequest,
      HttpServletResponse outResponse) throws ServletException,
      IOException {
    doGet(inRequest, outResponse);
  }
}

           
       








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