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主頁 > 知識庫 > jsp留言板源代碼二: 給jsp初學者.

jsp留言板源代碼二: 給jsp初學者.

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">
!--
BODY { FONT-FAMILY: "宋體","Arial Narrow", "Times New Roman"; FONT-SI
ZE: 9pt }
.p1 { FONT-FAMILY: "宋體", "Arial Narrow", "Times New Roman"; FONT-SIZ
E: 12pt }
A:link { COLOR: #00793d; TEXT-DECORATION: none }
A:visited { TEXT-DECORATION: none }
A:hover { TEXT-DECORATION: underline}
TD { FONT-FAMILY: "宋體", "Arial Narrow", "Times New Roman"; FONT-SIZE
: 9pt }
.p2 { FONT-FAMILY: "宋體", "Arial Narrow", "Times New Roman"; FONT-SIZ
E: 9pt; LINE-HEIGHT: 150% }
.p3 { FONT-FAMILY: "宋體", "Arial Narrow", "Times New Roman"; FONT-SIZ
E: 9pt; LINE-HEIGHT: 120% }

-->
/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"+
" function ValidInput() \n"+
" {if(document.sign.lw_author.value==\&;\&;) \n"+
" {alert(\&;請填寫您的大名。\&;); \n"+
" document.sign.lw_author.focus(); \n"+
" return false;} \n"+
" if(document.sign.lw_title.value==\&;\&;) \n"+
" {alert(\&;請填寫留言主題。\&;); \n"+
" document.sign.lw_title.focus(); \n"+
" return false;} \n"+
" if (document.sign.author_email.value!=\&;\&;) \n"+
" { if ((document.sign.author_email.value.indexOf(\&;@\&;)0)//(document
.sign.author_email.value.indexOf(\&;:\&;)!=-1)) \n"+
" {alert(\&;您填寫的EMail無效，請填寫一個有效的Email!\&;); \n"+
" document.sign.author_emaill.focus(); \n"+
" return false; \n"+
" } \n"+
" } \n"+
" return true; \n"+
" } \n"+
" function ValidSearch() \n"+
" { if(document.frmsearch.findstr.value==\&;\&;) \n"+
" {alert(\&;不能搜索空串！\&;); \n"+
" document.frmsearch.findstr.focus(); \n"+
" return false;} \n"+
" } \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*pagesizecount) 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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jsp留言板源代碼二: 給jsp初學者.