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jsp留言板源代码二: 给jsp初学者.

发布时间：2016-01-01 作者：网络 阅读：217次
作 者: precom (皮蛋) 2000.12.10

guestbook.jsp
===========================



张家界电话黄页(网上114)






<%@ page contentType="text/html; charset=GB2312" %>
<%@ page language="java" import="java.sql.*" %>

<%
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="
lwhere=" where lw_type='z' "; //只显示主贴

/*
Enumeration e = request.getParameterNames();
while (e.hasMoreElements()) {
String name = (String) e.nextElement();
*/
try{
//取显示的页页序数
pages = new Integer(request.getParameter("pages")).intValue();
} catch (Exception e) {}
try{
//取查询参数
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{
//取得参数 留言内容
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;
}

//形成其他数据项
author_ip=request.getRemoteAddr() ;
lw_time=testInq.getCurrentDate("yyyyMMddHHmmss");
lw_class2="2";
lw_type=""+"z"; //主贴
zt_time=lw_time;
zt_author=lw_author;
answer_num=0;
click_num=0;
//================
st="','";
//保证留言所有数据项的长度在正常范围内
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("错误:"+e);}
} catch (Exception e) {}
%>

<%
//验证留言输入项合法性的javascript
String ljs=" ";
out.print(ljs);
%>

<%
//留言板界面首部
String ltop="
\n"+
"
\n"+
"
\n"+
" \n"+
" \n"+
" \n"+
" \n"+
" \n"
+
" \n"+
" \n"+
"
\n"+
"

" size=5>欢迎远方的朋友来张家界旅游观光

主页: " href=\"http://www.zj.hn.cn\" target=_blank>" color=#ffffff>张家界旅游 管理员: +
" href=\"mailto:dzx@mail.zj.hn.cninfo.net\">
一民 \n"+
" >>" href=\"http://www.zj.hn.cn \">" color=#ffffff>管理 >>" href=\" http://www.zj.hn.cn \">" color=#ffffff>申请 		r> ue=\"搜 索\"> \n"+
"
\n"+
"
\n"+
"
<> ";
out.print(ltop);
%>

<%
//显示最近时间发表的一页留言
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+"
" );
out.println(countsql);
}

totalpages=(int)(count/pagesize);
if(count>totalpages*pagesize) totalpages++;
st=""+
" 0 width=\"95%\"> "+
"
00%\">"+
" 共 "+totalpages+" 页，"+count+"
条. "+" 当前页: "+pages+
"

";

out.print(st);

//out.print(" 共 "+totalpages+" 页，"+
count+" 条. "+" 当前页: "+pages+"
");

st="
"+
" "+
" "+
" "+
" "+
" "+
" "+
" "+
" ";
out.print(st);

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

int i;
// 跳过pages -1 页,使cursor指向pages并准备显示
for(i=1;i<=(pages - 1)*pagesize;i++) rs.next();
//显示第pages页开始
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=" \n" +
" "+
" "+
" "+
" "+
" ";

out.println(linestr);

}
rs.close();
//显示第pages页结束
st="
" color=#ffffff>留言主题" color=#ffffff>回应数" color=#ffffff>点击数" color=#ffffff>作者名" color=#ffffff>发表/回应时间
">" href=\""+llink+" \">"+lw_title+"["+answer_num+"]"+click_num+"il+"\">"+lw_author+""+st+"

";
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*pagesizeif(n>1)
{
//for(i=1;i<=n;i++) out.print(""+i+">"+i+" ");
//out.print("
">");
String lt1="返回主页",lt2="第一页",lt3="上一页",lt4="下一
页",lt5="最后一页",lt6="";
lt6=""+ lt1 + " a>"+
lurlt + "pages="+iFirst+">"+lt2+"&nbs
p; "+
lurlt + "pages="+iPre+">"+lt3+"
" +
lurlt + "pages="+iNext+">"+lt4+"
; " +
lurlt + "pages="+iLast+">"+lt5+"
; ";
st=""+
" 0 width=\"95%\"> "+
"
00%\">"+
lt6+
"

";

out.print(st);

}

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


%>


<%
//留言板界面尾部
String lbottom="";
lbottom=lbottom+
" \n"+
"
\n"+
" \n"+
" \n"+
" \n"+

" \n"+
" \n"+
" \n"+
" \n"+
" \n"+
" \n"+
" \n"+
" \n"+
" \n"+
" \n"+
"
color=blue \n"+
" face=楷体_GB2312 size=5>发 表 意 见 &nbs
p; [加*的内容必须填写]
\n"+
"
\n"+
"
\n"+
" \n"+
" \n"+
" \n"+
" \n"+
" \n"+
" \n"+
" \n"+
" \n"+
" \n"+
" \n"+
"
*留言主题：ame=lw_title \n"+
" size=36>
*网上大名：ame=lw_author \n"+
" size=36>
主页标题：=40 name=pagetitle \n"+
" size=36>
主页地址：=255 name=author_http \n"+
" size=36>
*电子邮件：ame=author_email \n"+
" size=36>
 \n"+
"
\n"+
"
\n"+
" \n"+
" \n"+
" \n"+

" \n"+
"
请在下面填写你的留言：
表情\n"+
" " alt=\"1.gif (152 bytes)\" height=15 src=\"1.gif\" width=15> NPUT \n"+
" name=gifface type=radio value=2>\"2.gifheight=15 \n"+
" src=\"2.gif\" width=15> >" alt=\"3.gif (147 bytes)\" height=15 src=\"3.gif\" width=15> NPUT \n"+
" name=gifface type=radio value=4>\"4.gifheight=15 \n"+
" src=\"4.gif\" width=15> >" alt=\"5.gif (118 bytes)\" height=15 src=\"5.gif\" width=15> NPUT \n"+
" name=gifface type=radio value=6>\"6.gifheight=15 \n"+
" src=\"6.gif\" width=15> >" alt=\"7.gif (180 bytes)\" height=15 src=\"7.gif\" width=15> NPUT \n"+
" name=gifface type=radio value=8>\"8.gifheight=15 \n"+
" src=\"8.gif\" width=15> >" alt=\"9.gif (162 bytes)\" height=15 src=\"9.gif\" width=15> NPUT \n"+
" name=gifface type=radio value=10>\"10.gif\" height=15 \n"+
" src=\"10.gif\" width=15> 11>" alt=\"11.gif (93 bytes)\" height=15 src=\"11.gif\" width=15> <
INPUT \n"+
" name=gifface type=radio value=12> \"12.gif)\" height=14 \n"+
" src=\"12.gif\" width=15> \n"+
" " name=gifface type=radio value=13> \"13.gif)\" height=14 \n"+
" src=\"13.gif\" width=15> \n"+
" " name=gifface type=radio value=14> \"14.gif)\" height=14 \n"+
" src=\"14.gif\" width=15> \n"+
" " name=gifface type=radio value=15> \"15.gif)\" height=14 \n"+
" src=\"15.gif\" width=15> \n"+
" " name=gifface type=radio value=16> \"16.gif)\" height=14 \n"+
" src=\"16.gif\" width=15>
turn ValidInput()\" type=submit value=\"提 交\"> \n"+

" e=\"预 览\"> \n"+
" T name=cmdBack onclick=javascript:history.go(-1) type=button value=\"返
回\"> \n"+
"
";
out.print(lbottom);

%>


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