📄 messageboard.java

📁 一个用java servlet写的留言板
💻 JAVA
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/******************************************************************************************************************
IT03July Java Assignment
Message Board!
Created by Jason(632)

This program using JDBC to record user detail and using HTTP session to remember user infomations from HTML pages.
******************************************************************************************************************/
package myelf;

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


public class messageboard extends HttpServlet
{
	public void doPost (HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException
    {
    	HttpSession session;
	    session = request.getSession(false);
	    String username = (String)session.getValue("username");

	    
	    PrintWriter output;//Start to write the HTML files in the java

        response.setContentType ("text/html");
        output = response.getWriter ();   
        output.println ("<html>");
        output.println ("<head>");
        output.println ("<meta http-equiv=\"Content-Type\" content=\"text/html; charset=gb2312\">");
        output.println ("<title>LeaveMessage</title>");
        output.println ("<style type=\"text/css\">");
        output.println ("<!--");
        output.println ("body {");
	    output.println ("background-color: #66CCFF;");
	    output.println ("margin-left: 10px;");
	    output.println ("margin-top: 10px;");
	    output.println ("margin-right: 10px;");
	    output.println ("margin-bottom: 10px;");
        output.println ("}");
        output.println (".style7 {font-family: Tahoma}");
        output.println ("body,td,th {");
	    output.println ("font-family: Tahoma;");
        output.println ("}");
        output.println ("-->");
        output.println ("</style></head>");
        output.println ("");
        output.println ("<body>");
        output.println ("<form name=\"form\" method=\"post\" action=\"http://www.myjavaserver.com/servlet/myelf.add\">");
        output.println ("<table width=\"745\" border=\"0\" align=\"center\" cellpadding=\"0\" cellspacing=\"0\">");
        output.println ("<tr>");
        output.println ("<th width=\"139\" scope=\"col\"><img src=\"http://myjavaserver.com/~myelf/pic/logo.jpg\" width=\"139\" height=\"82\"></th>");
        output.println ("<th width=\"318\" class=\"style7\" scope=\"col\">&nbsp;</th>");
        output.println ("<th width=\"45\" scope=\"col\">&nbsp;</th>");
        output.println ("<th width=\"89\" valign=\"baseline\" scope=\"col\"><span class=\"style7\"><a href=\"http://www.myjavaserver.com/servlet/myelf.logout\">Logout</a></span></th>");
        output.println ("<th width=\"105\" valign=\"baseline\" scope=\"col\"><a href=\"http://myjavaserver.com/~myelf/search.htm\">Search</a></th>");
        output.println ("</tr>");
        output.println ("</table>");
        output.println ("<p>&nbsp;</p>");
        output.println ("<p>&nbsp;</p>");
        output.println ("<table width=\"92%\" border=\"0\" align=\"center\" cellpadding=\"0\" cellspacing=\"0\">");
        output.println ("<tr>");
        output.println ("<td><h4 align=\"left\">Hello," + username + "!</h4></td>");
        output.println ("</tr>");
        output.println ("</table>");
        output.println ("<table width=\"745\" height=\"97\" border=\"0\" align=\"center\" cellpadding=\"0\" cellspacing=\"0\">");
        output.println ("<tr>");
        output.println ("<th height=\"55\" colspan=\"3\" scope=\"col\"> <div align=\"center\"> ");
        output.println ("<textarea name=\"message\" cols=\"60\" rows=\"5\" wrap=\"VIRTUAL\"></textarea>");
        output.println ("</div></th>");
        output.println ("</tr>");
        output.println ("<tr> ");
        output.println ("<th height=\"16\" colspan=\"3\" scope=\"col\">&nbsp;</th>");
        output.println ("</tr>");
        output.println ("<tr> ");
        output.println ("<th width=\"372\" height=\"16\" scope=\"col\"><div align=\"right\">");
        output.println ("<input type=\"submit\" name=\"Submit\" value=\"Submit\">");
        output.println ("</div></th>");
        output.println ("<th width=\"36\" scope=\"col\">&nbsp;</th>");
        output.println ("<th width=\"337\" scope=\"col\"><div align=\"left\">");
        output.println ("<input type=\"reset\" name=\"Submit2\" value=\"Reset\">");
        output.println ("</div></th>");
        output.println ("</tr>");
        output.println ("</table>");
        output.println ("<p>&nbsp;</p><p>&nbsp;</p>"); 
        output.println ("<p>&nbsp;</p>");
        output.println ("<p>&nbsp;</p>");
        output.println ("</form>");
        output.println ("</body>");
        output.println ("</html>");
    }
 }
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