请教：页面加载servlet显示不出来（急！！！！）

控制台没有错误信息
肯定就是<jsp:include page="/mybbsproject/content">
这个指令引入的那个页面的问题.

代码其实不乱的，我只是把部分代码贴出来，感觉是很乱，ShowContent.java是JavaBean

我还是把代码贴出来给各位看看吧！！
disbbs.jsp:
<%@ page language="java" pageEncoding="utf-8"%>
<%@ page contentType="text/html; charset=gbk"%>
<HTML>
<jsp:include page="include/head.txt" />
<BODY vLink=#333333 link=#333333> <TABLE cellSpacing=0 cellPadding=8 width="98%" align=center
bgColor=#dbeffb border=0>
<TBODY>
<TR>
<TD>
<jsp:include page="/include/toplogo.jsp" /> <BR>

<%
                 String forumid=request.getParameter("forumsid");
                 String topicid=request.getParameter("topicid");
                 out.print(forumid);
                 out.print(topicid);
               %>
<jsp:include page="/mybbsproject/content">
<jsp:param name="forumsid" value="<%=forumid%>" />
<jsp:param name="topicid" value="<%=topicid%>" />
</jsp:include> 
<BR>
<CENTER></CENTER>
<BR>
</TD>
</TR>
</TBODY>
</TABLE>
<jsp:include page="include/buttom.jsp" />
</BODY>
</HTML>
其中的forumsid和topicid是从前一页面传来的变量.content.java是个servlet,代码如下：
package mybbs;
import java.io.*;
import java.util.*;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
@SuppressWarnings("serial")
public class content extends HttpServlet {
PrintWriter out;
String forumid, topic_id,page;
public void doPost(HttpServletRequest request,HttpServletResponse response)throws IOException{
response.setContentType("text/html;charset=gbk");
out = response.getWriter();
HttpSession session = request.getSession();
int power = 0;
String forum = "";
if (session.getAttribute("userpower")!= null) {
power = Integer.parseInt((String) session.getAttribute("userpower"));
}
if (session.getAttribute("forum")!= null) {
forum = (String) session.getAttribute("forum");
}
forumid = request.getParameter("forumsid");
topic_id = request.getParameter("topicid");
page=request.getParameter("page");
try {
/*-------------------------------------------------------------------*/
ShowContent SC=new ShowContent();
Vector VC=SC.ListContent(forumid,topic_id,session);
out.print(VC);
/*-------------------------------------------------------------------*/ //将该贴子的点击次数加1
Operate OP=new Operate();
OP.UpdateClick_time(forumid,topic_id); int fid=Integer.parseInt(forumid);
ForumInfo fi=new ForumInfo();
fi.setForumid(fid);
String forumname = fi.getForumname();           /*-------------------------------------------------------------*/
out.print("<TABLE width='98%' align=center cellPadding=1 cellSpacing=0 background='images/head.gif'");
out.print("style=BORDER-RIGHT: #5aa8da 1px solid; BORDER-TOP: #5aa8da 1px solid; BORDER-LEFT: #5aa8da 1px solid>");
out.print(" <TBODY> <TR><TD width='69%' align=left background='images/8.gif' class=head>");
out.print("<B><A href='default.jsp'>本站论坛</A><FONT color=red>≡></FONT><A href='list-topic.do?forumsid=" +
                    forumid + "'>" + forumname + "");
out.print("</A><FONT color=red>≡></FONT>" +SC.getTitle() +"</B></TD>");
out.print( "<TD width='31%' align=right background='images/header-01.jpg' class=head>");
out.print(" </TD></TR>");
         /*-----------------------------------------------------------------------*/
out.print("<TR><TD align=left class=cbg><FONT color=red>");
AdminItem AI=new AdminItem();
StringBuffer buffer= AI.ShowAdminItem(session,SC.getPostid(),forumid,SC.getGroupid(),SC.getIslock());
out.print(buffer); out.print("</TD></FONT>");
          /*----------------------------------------------------------------------*/
          //发贴链接
out.print("<TD height=23 colSpan=2 align=right class=cbg>");
out.print("<A href='post.do?action=1&forumsid=" + forumid + "'><IMG src='images/post.gif'></A>");
out.print(" <A href='post.do?action=3&forumsid=" + forumid + "'><IMG src='images/votting.gif'></A> ");
if (SC.getIslock()== 0) {
out.print(" <A href='post.do?action=2&forumsid=" + forumid + "&topicid=" + topic_id +
                      "'><IMG src='images/reply.gif'></A>");
}
out.print("</TD></TR></TBODY></TABLE>");
out.print("<TABLE width='99%' align=center><TBODY>");
out.print("<TR><TD height=1></TD></TR></TBODY></TABLE>");
          /*-------------------------------------------------------------*/           if(SC.getIstopic()==2){
            out.print("<TABLE width='98%' align=center><TBODY>");
            out.print("<FORM action='vote' method='post'>");
            DisVote disv=new DisVote();
            out.print(disv.ShowVote(String.valueOf(SC.getPostid())));
            VoteAct vott=new VoteAct();
            out.print("<TR><TD><INPUT type='submit' value='投票' name='submit'></TD><TR>");
            out.print("<INPUT TYPE=hidden name=postid value='"+SC.getPostid()+"'>");
            out.print("<INPUT TYPE=hidden name=forumsid value='"+forumid+"'>");
            out.print("<INPUT TYPE=hidden name=topicid value='"+topic_id+"'>");
            out.print("</FORM>");
            out.print("</TBODY></TABLE>");
           }
    /*-------------------------------------------------------------*/
           int pages=0;
           if(page==null){
            pages=1;
           }
           else{
            pages=Integer.parseInt(page);
           }
           int lastrow=VC.size();
           int pagesize=params.Post_Page_Size;
           int pagecount=(lastrow%pagesize==0)?(lastrow/pagesize):(lastrow/pagesize+1);
     //当前的社始页数
           if (pages>=pagecount){
            pages=pagecount;
           }
           int position=(pages-1)*pagesize;
           int end=position+pagesize;
           if(end>lastrow)
            end=lastrow;    /*-------------------------------------------------------------*/
           for(int i=position;i<end;i++)
           {
            StringBuffer messages=(StringBuffer)VC.elementAt(i);
            out.print(messages);
           }
      /*--------------------------- ---------------*/
           out.print("    [共"+pagecount+"页]>>>");
           for(int j=1;j<=pagecount;j++)
           {
            if(j==pages){
            out.print("[");}
            out.print("<A href='disbbs.do?forumsid="+forumid+"&topicid="+topic_id+"&page="+j+"'>");
            out.print(""+j);
            out.print("</A>");
            if(j==pages){
            out.print("]");
            }
            out.print(" ");
           }
      /*-----------------------------------------------*/    }
    catch (Exception e)
    {
      session.setAttribute("throw", e.toString());
      response.sendRedirect("global.do");
    }
  }
  public void doGet(HttpServletRequest request,HttpServletResponse response) throws IOException
  {
    doPost(request, response);
  }
}

这是ShowContent.java中的代码：
package mybbs;
import java.util.*;
import java.sql.*;
import javax.servlet.http.HttpSession;public class ShowContent {
public ShowContent(){}
HttpSession session=null;
private int postid=0;
private int j=0;
private int istopic=1;
private int groupid=0;
private String title;
public Vector ListContent(String forumid,String topicid,HttpSession session) throws Exception{
this.session=session; Vector VCon=new Vector();
DBConn conn=new DBConn();
ResultSet rs=null;
int power=0;
String forum="";
String userid="";
if(session.getAttribute("userpower")!=null){
power=Integer.parseInt((String)session.getAttribute("userpower"));
}
if(session.getAttribute("forum")!=null){
forum=(String)session.getAttribute("forum");
}
if(session.getAttribute("userid")!=null){
userid=(String)session.getAttribute("userid");
}
String sql="SELECT posts.*,bbsuser.* FROM posts,bbsuser WHERE posts.isdel=0 AND posts.forumid="
                  +forumid+" AND posts.topic_id="+topicid+" AND posts.author_id=bbsuser.id ORDER BY posts.id ASC";
rs=conn.query(sql);

int i=1;
while(rs.next())
{
StringBuffer buffer=new StringBuffer();
if (rs.getInt("istopic") > 0){
j = rs.getInt("posts.islock");
title=rs.getString("title");
postid = rs.getInt("posts.id");
groupid = rs.getInt("posts.groupid");
istopic=rs.getInt("istopic");
}

/*-------------------------------------------------------------------*/
buffer.append("<TABLE align=center cellSpacing=0 cellPadding=1 width=\"98%\" border=0>");
buffer.append("<TBODY><TR>");

if(i==1)
buffer.append("<TD width=\"18%\" background=images/part1_38.gif height=28>");
else
buffer.append("<TD width=\"18%\" bgcolor=\"#f4f8e0\" height=28>");
//改一下颜色

if(rs.getInt("online")==1)
buffer.append("  <FONT color=red>作者："+rs.getString("bbsuser.nickname")+"</FONT>");
else
buffer.append("  作者："+rs.getString("bbsuser.nickname"));
buffer.append("</TD>");

if(i==1)
buffer.append("<TD width=\"58%\" background=images/part1_38.gif>");
else
buffer.append("<TD width=\"58%\" bgcolor=\"#f4f8e0\">");

if(i==1){
buffer.append("<FONT color=red>[楼主]</FONT>");
}
else{
buffer.append("<FONT color=red>["+i+"楼]</FONT>");
}

buffer.append("  主题："+rs.getString("title")+"</TD>");
if(i==1)
buffer.append("<TD width=\"20%\" background=images/part1_38.gif>");
else
buffer.append("<TD width=\"20%\" bgcolor=\"#f4f8e0\">");
buffer.append("<B>Posted:</B>"+rs.getString("post_time").substring(0,16));
buffer.append("</TD></TR></TBODY></TABLE>");

//显示作者信息.
buffer.append("<TABLE align=center cellSpacing=0 cellPadding=1 width=\"98%\" border=0>");
buffer.append("<TBODY><TR>");

buffer.append("<TD vAlign=top width=\"18%\" bgColor=#f4d8f2 rowSpan=2>");
buffer.append("  <IMG width=130 height=130 src=\""+rs.getString("face")+"\" />");

buffer.append("<BR>  等级："+rs.getString("usergrade"));

buffer.append("<BR>  文章："+rs.getString("totalpost")); System.out.println(buffer);         buffer.append("<BR>  积分："+rs.getString("userscore"));
buffer.append("<BR>  加入时间："+rs.getString("reg_time").substring(0,10));
buffer.append("<BR>  最后登陆："+rs.getString("bbsuser.last_time").substring(0,10));
buffer.append("<BR></TD>");
buffer.append("<TD width=\"77%\" vAlign=center align=center bgColor=#f4f8fb >");
//buffer.append("    "); buffer.append("<TABLE width=90% cellSpacing=0 cellPadding=0 border=0>");
buffer.append("<TBODY> <TR><TD width=14><IMG height=8 src='images/top_l.gif' width=14></TD>");
buffer.append("<TD background='images/top_c.gif'></TD>");
buffer.append("<TD width=16><IMG height=8 src='images/top_r.gif' width=16></TD>");
buffer.append("</TR>");
buffer.append("<TR><TD vAlign=top width=14 background='images/center_l.gif'></TD>");
buffer.append("<TD style='LINE-HEIGHT: 14pt' bgColor=#fffff1>");
buffer.append(rs.getString("content")+"</TD>");
buffer.append("<TD vAlign=top width=16 background='images/center_r.gif'>");
buffer.append("<IMG height=8 src='' width=16></TD></TR>");
buffer.append("<TR><TD vAlign=top width=14><IMG height=42 src='images/foot_l1.gif' width=14></TD>");
buffer.append("<TD background='images/foot_c.gif'><IMG height=42 src='images/foot_l3.gif' width=36></TD>");
buffer.append("<TD align=right width=16><IMG height=42 src='images/foot_r.gif' width=16></TD>");
buffer.append("</TR></TBODY></TABLE><BR>"); buffer.append("</TD></TR>");
buffer.append("<TR><TD width=\"77%\" vAlign=bottom bgColor=#f4f8fb > ");
buffer.append("<IMG src='images/sigline.gif' align=absBottom><BR>");
buffer.append("   "+rs.getString("signature")+"<BR>"); buffer.append("</TD></TR></TBODY></TABLE>"); buffer.append("<TABLE align=center cellSpacing=0 cellPadding=1 width=\"98%\" border=0>");
buffer.append("<TBODY><TR>");
buffer.append("<TD width=\"18%\" height=25 bgcolor=\"#6699FF\" >");
buffer.append("  <IMG src='images/pc.gif'>");
if(power>10||forum.equals(forumid)){
buffer.append(rs.getString("post_ip"));
}
buffer.append("</TD>");
buffer.append("<TD width=\"58%\" bgcolor=\"#8BB7F1\" >");
buffer.append("<A href='user_info.do?userid="+rs.getString("bbsuser.id")+"'>");
buffer.append("<IMG alt=查看作者资料 src='images/profile.gif' ></A> ");
buffer.append("<A href='"+rs.getString("weblog")+"'>");
buffer.append("<IMG alt=博客 src='images/weblog.gif' ></A> ");
buffer.append("<A href='search.do?nickname="+rs.getString("nickname")+"'>");
buffer.append("<IMG alt=搜索与之相关贴子 src='images/search.gif' ></A> ");
buffer.append("<A href='mailto:"+rs.getString("email")+"'>");
buffer.append("<IMG alt=发电子邮件 src=\"images/emailto.gif\" ></A> ");
buffer.append("<IMG alt="+rs.getString("skype")+" src=\"images/skype.gif\" > ");
buffer.append(" </TD>");
buffer.append("<TD align=right width=\"20%\" bgcolor=\"#8BB7F1\">");
if(power>10||forum.equals(forumid))
{
buffer.append("<A href='adminAction.do?motion=2&postid="+rs.getString("posts.id")+"&forumsid="+forumid+"'>");
buffer.append("<IMG alt=删除这个帖子 src='images/quote.gif' align=absMiddle></A>");
}
if(power>10||userid.equals(rs.getString("bbsuser.id")))
{
buffer.append("<A href='post.do?postid=" + rs.getString("posts.id") + "&action=4'>");
buffer.append("<IMG alt=编辑这个帖子 src='images/edit.gif' ></A>  ");
}
buffer.append("  <A  href='javascript:scroll(0,0)'><IMG alt=顶端 src='images/top.gif'></A>");
buffer.append("</TD></TR></TBODY></TABLE>"); VCon.add(buffer);
System.out.println(buffer);
buffer=null; i++;

   /*-------------------------------------------------------------------*/
} rs.close();
return VCon;
}
public int getPostid(){
return postid;
}
public int getGroupid(){
return groupid;
}
public int getIstopic(){
return istopic;
}
public int getIslock(){
return j;
}
public String getTitle(){
return title;
}
}
我用以上红色代码来检查buffer输出的问题，放在前面的时候在控制台都能看到输出的内容，
当放在以上位置时，就不能在输出了，我不知道这是不是导致content无法输出的原因！

web.xml：<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.5" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee   http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
  <servlet>
    <servlet-name>TopHead</servlet-name>
    <servlet-class>mybbs.TopHead</servlet-class>
  </servlet>
  <servlet>
    <servlet-name>list_forum</servlet-name>
    <servlet-class>mybbs.list_forum</servlet-class>
  </servlet>
  <servlet>
    <servlet-name>list_topics</servlet-name>
    <servlet-class>mybbs.list_topics</servlet-class>
  </servlet>
  <servlet>
    <servlet-name>content</servlet-name>
    <servlet-class>mybbs.content</servlet-class>
  </servlet>
  <servlet>
    <servlet-name>action</servlet-name>
    <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
    <init-param>
      <param-name>config</param-name>
      <param-value>/WEB-INF/struts-config.xml</param-value>
    </init-param>
    <init-param>
      <param-name>debug</param-name>
      <param-value>3</param-value>
    </init-param>
    <init-param>
      <param-name>detail</param-name>
      <param-value>3</param-value>
    </init-param>
    <load-on-startup>0</load-on-startup>
  </servlet>  <servlet-mapping>
    <servlet-name>TopHead</servlet-name>
    <url-pattern>/mybbsproject/TopHead</url-pattern>
  </servlet-mapping>
  <servlet-mapping>
    <servlet-name>list_forum</servlet-name>
    <url-pattern>/mybbsproject/list_forum</url-pattern>
  </servlet-mapping>
  <servlet-mapping>
    <servlet-name>content</servlet-name>
    <url-pattern>/mybbsproject/content</url-pattern>  </servlet-mapping>
  <servlet-mapping>
    <servlet-name>list_topics</servlet-name>
    <url-pattern>/mybbsproject/list_topics</url-pattern>
  </servlet-mapping>
  <servlet-mapping>
    <servlet-name>action</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>struts-config.xml:<action path="/disbbs" forward="/disbbs.jsp" />
跟disbbs.jsp页面中的配置是一样的

同路人呀！~ 虽然我不知道你问的这个问题的答案,但我知道给你回复的人会很少.因为咱们发的代码太长了,大家打开你这个
帖子后,一看这么多代码,又没遇见过类似的问题.第一反应: shutdown this page !~

调试易

请教：页面加载servlet显示不出来（急！！！！）

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