Java/Strutsを使用して掲示板を作成していますが、トップページからBBSへ飛びません

JAVA/Strutsを用いて掲示板を作成していますが、トップページ(index.jsp)から掲示板リンクをクリックして掲示板(bbs.Jsp)へ飛ばしたいのですが、エラーが発生します。
どうすれば飛ばせるようになりますか？

掲示板作成でしｙソースコードを掲載させていただきます。
■Struts-config.xml■

<form-beans> <form-bean name="menuForm" type="jp.struts.restaurant2.MenuForm"/> <form-bean name="userForm" type="jp.struts.restaurant2.UserForm"/> <form-bean name="MessagesForm" type="jp.struts.bbs.MessagesForm"/> <form-bean name="UpdateForm" type="jp.struts.bbs.UpdateForm"/> <action-mappings> <action path="/AuthAction" type="jp.struts.restaurant2.AuthAction" name="userForm" scope="request"> <forward name="index" path="/index.jsp"/> <forward name="auth" path="/auth.jsp" /> </action>

■トップページindex.jsp■
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<%@ page import="jp.struts.restaurant2.* " %>
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html" %>
<%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w2.org/TR/html4/loose.dtd">

<html:html lang = "true" xhtml = "true">

<head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <title></title> <style type="text/css"> *{padding:5px; margin:0px;} body{background:lightyellow; text-align:center; </style> </head> <body> <% AuthAndRegist userForm = (AuthAndRegist)session.getAttribute("userForm"); String guest; int custType; if(userForm != null){ if(userForm.getUserName() != null){ guest = userForm.getUserName(); custType = userForm.getType(); }else{ guest = "ゲスト"; custType = 1; } }else{ guest = "ゲスト"; custType = 1; } %> <h2>◆ Restaurante IDEALLE ◆</h2> <div><%= guest %>様、いらっしゃいませ。</div><br/> <p><html:link href = "AuthAction.do">お客様ログイン</html:link></p> <% if(guest.equals("ゲスト")){ %> <p><html:link href = "AuthAction.do?mode=toRegist">新規お客様登録</html:link></p> <% } %> <p><html:link href = "ReserveAction.do">ご予約</html:link></p> <p><html:link href = "MenuAction.do?mode=showMenu">メニューを見る</html:link></p> <p><html:link href = "MessagesAction.do">コミュニケーション掲示板</html:link></p> <p><html:link href = "Logoff.do">ログオフ</html:link></p> <% if(custType == 0) { %> <p> </p> <p><html:link href = "ReserveListAction.do">予約メンテナンス(管理用) </html:link></p> <p><html:link href = "MenuAction.do?mode=mainteMenu">メニューメンテナンス(管理用) </html:link></p> <p><html:link href = "CustomerAction.do">ユーザーメンテナンス(管理用)</html:link></p> <% } %> </body> </html:html>

■MessagesAction.java■

package jp.struts.bbs;

import java.util.ArrayList;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

public class MessagesAction extends Action{
public ActionForward execute(ActionMapping map, ActionForm frm,
HttpServletRequest request, HttpServletResponse response)
throws Exception{

	Messages mes = new Messages();
	mes.execute();
	ArrayList<Messages> mesObj = mes.getAl();
	request.setAttribute("mesList", mesObj);

	return map.findForward("bbs");
}

}

■MessagesForm.java■

package jp.struts.bbs;
import java.io.UnsupportedEncodingException;

import javax.servlet.http.HttpServletRequest;

import org.apache.struts.action.ActionMapping;
import org.apache.struts.validator.ValidatorForm;

public class MessagesForm extends ValidatorForm{
private static final long serialVersionUID = 1L;

public MessagesForm(){
	super();
}

public void reset(ActionMapping mapping, HttpServletRequest request){
	super.reset(mapping, request);
	try{
		request.setCharacterEncoding("utf-8");
	}catch(UnsupportedEncodingException e){
		e.printStackTrace();
	}
}

}

■Messages.java■

package jp.struts.bbs;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;

import javax.naming.InitialContext;
import javax.sql.DataSource;

public class Messages {
private ArrayList<Messages> al = null;
private String title = null;
private String name = null;
private String text = null;
private String pass = null;
private String date = null;
private int id = 0;

   public Messages(){
	   super();
   }

public ArrayList<Messages> getAl() {
	return al;
}

public void setAl(ArrayList<Messages> al) {
	this.al = al;
}

public String getTitle() {
	return title;
}

public void setTitle(String title) {
	this.title = title;
}

public String getName() {
	return name;
}

public void setName(String name) {
	this.name = name;
}

public String getText() {
	return text;
}

public void setText(String text) {
	this.text = text;
}

public String getPass() {
	return pass;
}

public void setPass(String pass) {
	this.pass = pass;
}

public String getDate() {
	return date;
}

public void setDate(String date) {
	this.date = date;
}

public int getId() {
	return id;
}

public void setId(int id) {
	this.id = id;
}

public void execute() throws SQLException,Exception{

	Class.forName("jp.struts.bbs.Messages");
	DataSource ds = null;
	InitialContext ic = null;
	Connection con = null;


	ic = new InitialContext();
    ds = (DataSource)ic.lookup("java:comp/env/mysql");
	con = ds.getConnection();

	String sql = "select * from bbs order by bbs_date desc";
	PreparedStatement pst = con.prepareStatement(sql);
	ResultSet rs  = pst.executeQuery();

	Messages mes = null;
	al = new ArrayList<Messages>();
	while(rs.next()){
		mes = new Messages();
		mes.setTitle(rs.getString("bbs_title"));
	    mes.setName(rs.getString("bbs_name"));
	    mes.setText(rs.getString("bbs_text"));
	    mes.setDate(rs.getString("bbs_date"));
	    mes.setPass(rs.getString("bbs_pw"));
	    mes.setId(rs.getInt("bbs_id"));
	    al.add(mes);
	}
	pst.close();
	rs.close();
	con.close();
	}
   }

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