jsp留言板源代碼二: 給jsp初學者.

2020-07-27 21:54:34

字體：大中小

來源：轉載

供稿：網友

作者: precom (皮蛋) 2000.12.10

guestbook.jsp
===========================
<html><head>
<META content="text/html; charset=gb2312 " http-equiv=Content-Type>

<title>張家界電話黃頁(網上114)</title></head>
<style type="text/css">

</style>

<body>

<%@ page contentType="text/html; charset=GB2312" %>
<%@ page language="java" import="java.sql.*" %>
<jsp:useBean id="testInq" scope="page" class="ymbean.opDb" />
<%
int pages=1;
int pagesize=10;
int count=0;
int totalpages=0;

String countsql="",inqsql="",lwhere="",insertsql="",st="";

String lw_title="",lw_author="",pagetitle="",author_http="",author_e
mail="",lw_ico="",
lw_content="",lw_class1="";
String author_ip="",lw_time="",lw_class2="",lw_type="",zt_time="",zt
_author="";
int answer_num=0,click_num=0;
int inquire_item=1;
String inquire_itemt="",inquire_value="";
String lurlt="<a href=guestbook.jsp?",llink="";

lwhere=" where lw_type='z' "; //只顯示主貼

/*
Enumeration e = request.getParameterNames();
while (e.hasMoreElements()) {
String name = (String) e.nextElement();
*/
try{
//取顯示的頁頁序數
pages = new Integer(request.getParameter("pages")).intValue();
} catch (Exception e) {}
try{
//取查詢參數
inquire_item=new Integer(request.getParameter("range")).intValu
e();
inquire_value=new String(request.getParameter("findstr").getByt
es("ISO8859_1"));
if(inquire_item==0) inquire_itemt="lw_title";
else if(inquire_item==1) inquire_itemt="lw_content";
else if(inquire_item==2) inquire_itemt="lw_author";
else if(inquire_item==3) inquire_itemt="lw_time";
else if(inquire_item==4) inquire_itemt="lw_title";
lwhere=lwhere+" and "+inquire_itemt+" like '%"+inquire_value+"%
'";
lurlt=lurlt+"range="+inquire_item+"&findstr="+inquire_value+"&"

} catch (Exception e) {}

try{
//取得參數留言內容
lw_class1=new String(request.getParameter("gbname").getBytes("ISO885
9_1"));
lw_title=new String(request.getParameter("lw_title").getBytes("ISO88
59_1"));
lw_author=new String(request.getParameter("lw_author").getBytes("ISO
8859_1"));
pagetitle=new String(request.getParameter("pagetitle").getBytes("ISO
8859_1"));
author_http=new String(request.getParameter("author_http").getBytes(
"ISO8859_1"));
author_email=new String(request.getParameter("author_email").getByte
s("ISO8859_1"));
lw_ico=request.getParameter("gifface");
lw_content=new String(request.getParameter("lw_content").getBytes("I
SO8859_1"));
String requestMethod=request.getMethod();
requestMethod=requestMethod.toUpperCase();
if(requestMethod.indexOf("POST")<0)
{ out.print("非法操作!");
return;
}

//形成其他數據項
author_ip=request.getRemoteAddr() ;
lw_time=testInq.getCurrentDate("yyyyMMddHHmmss");
lw_class2="2";
lw_type=""+"z"; //主貼
zt_time=lw_time;
zt_author=lw_author;
answer_num=0;
click_num=0;
//================
st="','";
//保證留言所有數據項的長度在正常范圍內
if(lw_title.length()>50) lw_title=lw_title.substring(0,50);
if(lw_author.length()>20) lw_author=lw_author.substring(0,20);
if(author_http.length()>40) author_http=author_http.substring(0,40);

if(author_email.length()>50) author_email=author_email.substring(0,4
0);
if(lw_content.length()>4000) lw_content=lw_content.substring(0,4000)

insertsql="insert into guestbook values('"+lw_title+st+lw_author+st+
author_http+st+
author_email+st+lw_ico+st+lw_time+"',"+answer_num+","+cli
ck_num+",'"+
author_ip+st+lw_class1+st+lw_class2+st+lw_type+st+zt_time
+st+zt_author+st+
lw_content+"')";
//out.print(insertsql);
//插入留言
try{
String lmsg=testInq.executeUpdate(insertsql);
if(lmsg.indexOf("executeUpdate ok")<0)
out.print("lmsg="+lmsg);

}catch (Exception e) { out.print("錯誤:"+e);}
} catch (Exception e) {}
%>

<%
//驗證留言輸入項合法性的javascript
String ljs=" <SCRIPT language=JavaScript> /n"+
"  /n"+
" </SCRIPT> ";
out.print(ljs);
%>

<%
//留言板界面首部
String ltop=" <DIV align=center> /n"+
" <CENTER> /n"+
" <FORM action=guestbook.jsp method=post name=frmsearch> /n"+
" <INPUT name=gbname type=hidden value=cnzjj_gt> /n"+
" <TABLE align=center border=0 cellSpacing=1 width=/"95%/"> /n"+
" <TBODY> /n"+
" <TR> /n"+
" <TD bgColor=#336699 colSpan=2 width=/"100%/"> /n"+
" <P align=center><FONT color=#ffffff face=楷體_GB2312 /n"+
" size=5>歡迎遠方的朋友來張家界旅游觀光</FONT></P></TD></TR> /n"
+
" <TR bgColor=#6699cc> /n"+
" <TD align=left noWrap width=/"50%/">主頁: <A /n"+
" href=/"http://www.zj.hn.cn/" target=_blank><FONT /n"+
" color=#ffffff>張家界旅游</FONT></A> 管理員: <A /n"
+
" href=/"mailto:dzx@mail.zj.hn.cninfo.net/"><FONT color=#ffffff>
一民</FONT></A> /n"+
" >><A /n"+
" href=/"http://www.zj.hn.cn /"><FONT /n"+
" color=#ffffff>管理</FONT></A> >><A /n"+
" href=/" http://www.zj.hn.cn /"><FONT /n"+
" color=#ffffff>申請</FONT></A> </TD> /n"+
" <TD align=right width=/"50%/"><SELECT class=ourfont name=range s
ize=1> /n"+
" <OPTION selected value=0>按主題</OPTION> <OPTION value=1>按內
容</OPTION> /n"+
" <OPTION value=2>按作者</OPTION> <OPTION value=3>按日期</OPTI
ON> <OPTION /n"+
" value=4>按主題&內容</OPTION></SELECT> <INPUT name=findst
r> <INPUT name=search onclick=/"return ValidSearch()/" type=submit val
ue=/"搜索/"> /n"+
" </TD></TR></TBODY></TABLE></FORM> /n"+
" <HR align=center noShade SIZE=1 width=/"95%/"> /n"+
" </CENTER></div> ";
out.print(ltop);
%>

<%
//顯示最近時間發表的一頁留言
countsql="select count(lw_title) from guestbook "+lwhere;
inqsql ="select lw_title,answer_num,click_num,lw_author,lw_time,expres
sion,"+
" author_email,lw_class1,lw_class2 from guestbook "+lwhere+" o
rder by lw_time desc" ;

if(pages>0)
{
try {
try{
ResultSet rcount=testInq.executeQuery(countsql);
if(rcount.next())
{
count = rcount.getInt(1);
}
rcount.close();
} catch (Exception el1) { out.println("count record error
: "+el1+"<br>" );
out.println(countsql);
}

totalpages=(int)(count/pagesize);
if(count>totalpages*pagesize) totalpages++;
st=""+
" <TABLE align=center border=0 cellPadding=0 cellSpacing=
0 width=/"95%/"> "+
" <TBODY> <TR> <TD align=middle bgColor=#97badd width=/"1
00%/"><FONT color=#ff0000>"+
" 共 "+totalpages+" 頁，"+count+"
條. "+" 當前頁: "+pages+
" </FONT></TD></TR></TBODY></TABLE><BR> ";

out.print(st);

//out.print(" 共 "+totalpages+" 頁，"+
count+" 條. "+" 當前頁: "+pages+"<br>");

st=" <center> "+
" <TABLE border=0 cellPadding=2 cellSpacing=1 width=/"95%/"> "+
" <TBODY> "+
" <TR> "+
" <TD align=middle bgColor=#6699cc width=/"55%/"><FONT "+
" color=#ffffff>留言主題</FONT></TD> "+
" <TD align=middle bgColor=#6699cc width=50><FONT "+
" color=#ffffff>回應數</FONT></TD> "+
" <TD align=middle bgColor=#6699cc width=40><FONT "+
" color=#ffffff>點擊數</FONT></TD> "+
" <TD align=middle bgColor=#6699cc width=100><FONT "+
" color=#ffffff>作者名</FONT></TD> "+
" <TD align=middle bgColor=#6699cc width=140><FONT "+
" color=#ffffff>發表/回應時間</FONT></TD></TR> ";
out.print(st);

if(count > 0 )
{
ResultSet rs = testInq.executeQuery(inqsql);
ResultSetMetaData metaData = rs.getMetaData();

int i;
// 跳過pages -1 頁,使cursor指向pages并準備顯示
for(i=1;i<=(pages - 1)*pagesize;i++) rs.next();
//顯示第pages頁開始
String linestr="";
for(i=1;i<=pagesize;i++)
if(rs.next())
{
lw_title=rs.getString("lw_title");
answer_num=rs.getInt("answer_num");
click_num=rs.getInt("click_num");
lw_author=rs.getString("lw_author");
lw_time=rs.getString("lw_time");
st=lw_time.substring(0,4)+"-"+lw_time.substring(4,6)+"-"
+lw_time.substring(6,8)+":"+
lw_time.substring(8,10)+":"+lw_time.substring(10,12)+
":"+lw_time.substring(12,14);
lw_ico=rs.getString("expression");
author_email=rs.getString("author_email");
lw_class1=rs.getString("lw_class1");
lw_class2=rs.getString("lw_class2");
llink="reply.jsp?lw_class1="+lw_class1+"&lw_class2="+lw_
class2+"&zt_time="+lw_time+
"&zt_author="+author_email;
linestr=" <TR bgColor=#d5e8fd> /n" +
" <TD bgColor=#d5e8fd><IMG src=/""+lw_ico+".gif/
"><A "+
" href=/""+llink+" /">"+lw_title+"</A></TD> "+
" <TD align=middle>["+answer_num+"]</TD>"+
" <TD align=middle>"+click_num+"</TD>"+
" <TD align=middle><A href=/"mailto:"+author_ema
il+"/">"+lw_author+"</A></TD>"+
" <TD align=middle>"+st+"</TD></TR>";

out.println(linestr);

}
rs.close();
//顯示第pages頁結束
st="</TBODY></TABLE><BR>";
out.print(st);

int iFirst=1,iLast=totalpages,iPre,iNext;
if(pages<=1) iPre=1;
else iPre=pages - 1;

if(pages>=totalpages) iNext=totalpages;
else iNext=pages + 1;

int n=(int)(count/pagesize);
if(n*pagesize<count) n++;
if(n>1)
{
//for(i=1;i<=n;i++) out.print("<a href=inquire.jsp?pages=
"+i+">"+i+" </a>");
//out.print("<HR align=center noShade SIZE=1 width=/"95%/
">");
String lt1="返回主頁",lt2="第一頁",lt3="上一頁",lt4="下一
頁",lt5="最后一頁",lt6="";
lt6="<a href=http://www.zj.hn.cn>"+ lt1 + " </
a>"+
lurlt + "pages="+iFirst+"><FONT color=red>"+lt2+"&nbs
p; </a>"+
lurlt + "pages="+iPre+"><FONT color=red>"+lt3+"
</a>" +
lurlt + "pages="+iNext+"><FONT color=red>"+lt4+"
; </a>" +
lurlt + "pages="+iLast+"><FONT color=red>"+lt5+"
; </a>";
st=""+
" <TABLE align=center border=0 cellPadding=0 cellSpacing=
0 width=/"95%/"> "+
" <TBODY> <TR> <TD align=middle bgColor=#97badd width=/"1
00%/"><FONT color=#ff0000>"+
lt6+
" </FONT></TD></TR></TBODY></TABLE><BR> ";

out.print(st);

}

}
} catch (Exception e) { out.println("error: "+e); }
}

%>

<%
//留言板界面尾部
String lbottom="";
lbottom=lbottom+
" /n"+
" <FORM action=guestbook.jsp method=post name=sign> /n"+
" <INPUT name=gbname type=hidden value=cnzjj_gt> /n"+
" <INPUT name=pages type=hidden value=1> /n"+
" <TABLE bgColor=#d5e8fd border=0 cellSpacing=1 width=/"95%/"> /n"+

" <TBODY> /n"+
" <TR> /n"+
" <TD align=middle bgColor=#e6e6fa colSpan=2 noWrap><STRONG><FONT
color=blue /n"+
" face=楷體_GB2312 size=5>發表意見</FONT></STRONG> &nbs
p; [加*的內容必須填寫] </TD></TR> /n"+
" <TR> /n"+
" <TD noWrap width=/"45%/"> /n"+
" <DIV align=left> /n"+
" <TABLE bgColor=#d5e8fd border=0 cellSpacing=1 width=/"100%/">
/n"+
" <TBODY> /n"+
" <TR> /n"+
" <TD noWrap width=/"100%/">*留言主題：<INPUT maxLength=40 n
ame=lw_title /n"+
" size=36></TD></TR> /n"+
" <TR> /n"+
" <TD noWrap width=/"100%/">*網上大名：<INPUT maxLength=18 n
ame=lw_author /n"+
" size=36></TD></TR> /n"+
" <TR> /n"+
" <TD noWrap width=/"100%/"> 主頁標題：<INPUT maxLength
=40 name=pagetitle /n"+
" size=36></TD></TR> /n"+
" <TR> /n"+
" <TD noWrap width=/"100%/"> 主頁地址：<INPUT maxLength
=255 name=author_http /n"+
" size=36></TD></TR> /n"+
" <TR> /n"+
" <TD noWrap width=/"100%/">*電子郵件：<INPUT maxLength=40 n
ame=author_email /n"+
" size=36></TD></TR></TBODY></TABLE></DIV></TD> /n"+
" <TD noWrap vAlign=top width=/"55%/"> /n"+
" <DIV align=left> /n"+
" <TABLE bgColor=#b6d7fc border=0 cellSpacing=1 width=/"100%/">
/n"+
" <TBODY> /n"+
" <TR> /n"+
" <TD width=/"100%/">請在下面填寫你的留言：</TD></TR> /n"+

" <TR> /n"+
" <TD width=/"100%/"><TEXTAREA cols=50 name=lw_content rows=
7></TEXTAREA></TD></TR></TBODY></TABLE></DIV></TD></TR> /n"+
" <TR> /n"+
" <TD bgColor=#fbf7ea colSpan=2 noWrap>表情/n"+
" <INPUT name=gifface type=radio value=1 checked><IMG /n"+
" alt=/"1.gif (152 bytes)/" height=15 src=/"1.gif/" width=15> <I
NPUT /n"+
" name=gifface type=radio value=2><IMG alt=/"2.gif (174 bytes)/"
height=15 /n"+
" src=/"2.gif/" width=15> <INPUT name=gifface type=radio value=3
><IMG /n"+
" alt=/"3.gif (147 bytes)/" height=15 src=/"3.gif/" width=15> <I
NPUT /n"+
" name=gifface type=radio value=4><IMG alt=/"4.gif (172 bytes)/"
height=15 /n"+
" src=/"4.gif/" width=15> <INPUT name=gifface type=radio value=5
><IMG /n"+
" alt=/"5.gif (118 bytes)/" height=15 src=/"5.gif/" width=15> <I
NPUT /n"+
" name=gifface type=radio value=6><IMG alt=/"6.gif (180 bytes)/"
height=15 /n"+
" src=/"6.gif/" width=15> <INPUT name=gifface type=radio value=7
><IMG /n"+
" alt=/"7.gif (180 bytes)/" height=15 src=/"7.gif/" width=15> <I
NPUT /n"+
" name=gifface type=radio value=8><IMG alt=/"8.gif (96 bytes)/"
height=15 /n"+
" src=/"8.gif/" width=15> <INPUT name=gifface type=radio value=9
><IMG /n"+
" alt=/"9.gif (162 bytes)/" height=15 src=/"9.gif/" width=15> <I
NPUT /n"+
" name=gifface type=radio value=10><IMG alt=/"10.gif (113 bytes)
/" height=15 /n"+
" src=/"10.gif/" width=15> <INPUT name=gifface type=radio value=
11><IMG /n"+
" alt=/"11.gif (93 bytes)/" height=15 src=/"11.gif/" width=15> <
INPUT /n"+
" name=gifface type=radio value=12> <IMG alt=/"12.gif (149 bytes
)/" height=14 /n"+
" src=/"12.gif/" width=15> /n"+
" <INPUT /n"+
" name=gifface type=radio value=13> <IMG alt=/"13.gif (149 bytes
)/" height=14 /n"+
" src=/"13.gif/" width=15> /n"+
" <INPUT /n"+
" name=gifface type=radio value=14> <IMG alt=/"14.gif (149 bytes
)/" height=14 /n"+
" src=/"14.gif/" width=15> /n"+
" <INPUT /n"+
" name=gifface type=radio value=15> <IMG alt=/"15.gif (149 bytes
)/" height=14 /n"+
" src=/"15.gif/" width=15> /n"+
" <INPUT /n"+
" name=gifface type=radio value=16> <IMG alt=/"16.gif (149 bytes
)/" height=14 /n"+
" src=/"16.gif/" width=15> </TD> /n"+
" </TR> /n"+
" <TR> /n"+
" <TD align=middle colSpan=2 noWrap><INPUT name=cmdGO onclick=/"re
turn ValidInput()/" type=submit value=/"提交/"> /n"+

" <INPUT name=cmdPrev onclick=/"return ValidInput()/" type=submit valu
e=/"預覽/"> /n"+
" <INPUT name=cmdCancel type=reset value=/"重寫/"> <INPU
T name=cmdBack onclick=javascript:history.go(-1) type=button value=/"返
回/"> /n"+
" </TD></TR></TBODY></TABLE></FORM></CENTER></DIV> ";
out.print(lbottom);

%>

</body></html>

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