Jsp message board source code 2: for jsp beginners.

Last Update:2018-12-08 Source: Internet

Author: User

Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞

Prepared by: precom (pig) 2000.12.10

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

<Title> Zhangjiajie Yellow Pages (114 on the Internet) </title> <Style type = "text/css">
<! --
BODY {FONT-FAMILY: "", "Arial Narrow", "Times New Roman"; FONT-SI
ZE: 9pt}
. P1 {FONT-FAMILY: "", "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: "", "Arial Narrow", "Times New Roman"; FONT-SIZE
: 9pt}
. P2 {FONT-FAMILY: "", "Arial Narrow", "Times New Roman"; FONT-SIZ
E: 9pt; LINE-HEIGHT: 150%}
. P3 {FONT-FAMILY: "", "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'"; // only show the primary sticker

/*
Enumeration e = request. getParameterNames ();
While (e. hasMoreElements ()){
String name = (String) e. nextElement ();
*/
Try {
// Obtain the order number of the displayed pages
Pages = new Integer (request. getParameter ("pages"). intValue ();
} Catch (Exception e ){}
Try {
// Retrieve query parameters
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 {
// Get parameter message content
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 ("illegal operation! ");
Return;
}

// Form other data items
Author_ip = request. getRemoteAddr ();
Lw_time = testInq. getCurrentDate ("yyyyMMddHHmmss ");
Lw_class2 = "2 ";
Lw_type = "" + "z"; // post
Zt_time = lw_time;
Zt_author = lw_author;
Answer_num = 0;
Click_num = 0;
// ==========================
St = "','";
// Ensure that the length of all data items in the message is within the normal range
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)

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 );
// Insert a message
Try {
String lmsg=testInq.exe cuteUpdate (insertsql );
If (lmsg. indexOf ("executeUpdate OK") <0)
Out. print ("lmsg =" + lmsg );

} Catch (Exception e) {out. print ("error:" + e );}
} Catch (Exception e ){}
%>

<%
// Verify the validity of the entered message.
String ljs = "<SCRIPT language = JavaScript> \ n" +
"<! -- \ N "+
"Function ValidInput () \ n" +
"{If (document. sign. lw_author.value = \" \ ") \ n" +
"{Alert (\" Please fill in your name. \ "); \ N" +
"Document. sign. lw_author.focus (); \ n" +
"Return false;} \ n" +
"If (document. sign. lw_title.value = \" \ ") \ n" +
"{Alert (\" Enter the message subject. \ "); \ 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 (\" the EMail you entered is invalid. Please enter a valid 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 (\" cannot search for empty strings! \ "); \ N" +
"Document. frmsearch. findstr. focus (); \ n" +
"Return false;} \ n" +
"} \ N" +
"// --> \ N" +
"</SCRIPT> ";
Out. print (ljs );
%>

<%
// Message board interface Header
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 = _ GB2312 \ n" +
"Size = 5> welcome friends from afar to Zhangjiajie for sightseeing </FONT> </P> </TD> </TR> \ n"
+
"<TR bgColor = # 6699cc> \ n" +
"<TD align = left noWrap width = \" 50% \ "> Home Page: <A \ n" +
"Href = \" http://www.zj.hn.cn \ "target = _ blank> <FONT \ n" +
"Color = # ffffff> Zhangjiajie tourism </FONT> </A> administrator: <A \ n"
+
"Href = \" mailto: dzx@mail.zj.hn.cninfo.net \ "> <FONT color = # ffffff>
Yi min </FONT> </A> \ n "+
">>< A \ n" +
"Href = \" http://www.zj.hn.cn \ "> <FONT \ n" +
"Color = # ffffff> management </FONT> </A> <A \ n" +
"Href = \" http://www.zj.hn.cn \ "> <FONT \ n" +
"Color = # ffffff> application </FONT> </A> </TD> \ n" +
"<TD align = right width = \" 50% \ "> <SELECT class = ourfont name = range s
Ize = 1> \ n "+
"<OPTION selected value = 0> by topic </OPTION> <OPTION value = 1> by internal
Capacity </OPTION> \ n "+
"<OPTION value = 2> by author </OPTION> <OPTION value = 3> by date </OPTI
ON> <OPTION \ n "+
"Value = 4> by topic & content </OPTION> </SELECT> <INPUT name = findst
R> <INPUT name = search onclick = \ "return ValidSearch () \" type = submit val
Ue = \ "Search \"> \ n "+
"</TD> </TR> </TBODY> </TABLE> </FORM> \ n" +
"<HR align = center noShade SIZE = 1 width = \" 95% \ "> \ n" +
"</CENTER> </div> ";
Out. print (ltop );
%>

<%
// Display a message posted last time
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.exe cuteQuery (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% \" type = "codeph" text = "codeph"> "+
"<TBODY> <TR> <TD align = middle bgColor = #97 badd width = \" 1
00% \ "> <FONT color = # ff0000>" +
"Total" + totalpages + "page," + count +"
. "+" Current page: "+ pages +
"</FONT> </TD> </TR> </TBODY> </TABLE> <BR> ";

Out. print (st );

// Out. print ("Total" + totalpages + "page," +
Count + "entries." + "Current page:" + pages + "<br> ");

St = "<center>" +
& Quot; <TABLE border = 0 cellPadding = 2 cellSpacing = 1 width = \ & quot; 95% \ & quot;> & quot; +
"<TBODY>" +
"<TR>" +
"<TD align = middle bgColor = # 6699cc width = \" 55% \ "> <FONT" +
"Color = # ffffff> Message Subject </FONT> </TD>" +
"<TD align = middle bgColor = # 6699cc width = 50> <FONT" +
"Color = # ffffff> Response count </FONT> </TD>" +
"<TD align = middle bgColor = # 6699cc width = 40> <FONT" +
"Color = # ffffff> clicks </FONT> </TD>" +
"<TD align = middle bgColor = # 6699cc width = 100> <FONT" +
"Color = # ffffff> author name </FONT> </TD>" +
"<TD align = middle bgColor = # 6699cc width = 140> <FONT" +
"Color = # ffffff> posting/response time </FONT> </TD> </TR> ";
Out. print (st );

If (count> 0)
{
ResultSet rs = testInq.exe cuteQuery (inqsql );
ResultSetMetaData metaData = rs. getMetaData ();

Int I;
// Skip pages-1 to point cursor to pages and prepare to display
For (I = 1; I <= (pages-1) * pagesize; I ++) rs. next ();
// Display the beginning of pages
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 ();
// Display page pages to end
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 = "back to homepage", lt2 = "first page", lt3 = "Previous Page", lt4 = "next
Page ", lt5 =" last page ", 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% \" type = "codeph" text = "codeph"> "+
"<TBODY> <TR> <TD align = middle bgColor = #97 badd width = \" 1
00% \ "> <FONT color = # ff0000>" +
Lt6 +
"</FONT> </TD> </TR> </TBODY> </TABLE> <BR> ";

Out. print (st );

}

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

<%
// The End Of The message board interface
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 = _ GB2312 size = 5> For more information, see </FONT> </STRONG> & nbs.
P; [add * content required] </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% \ "> * Message Subject: <INPUT maxLength = 40 n
Ame = lw_title \ n "+
"Size = 36> </TD> </TR> \ n" +
"<TR> \ n" +
"<TD noWrap width = \" 100% \ "> * Network Name: <INPUT maxLength = 18 n
Ame = lw_author \ n "+
"Size = 36> </TD> </TR> \ n" +
"<TR> \ n" +
"<TD noWrap width = \" 100% \ "> homepage title: <INPUT maxLength
= 40 name = pagetitle \ n "+
"Size = 36> </TD> </TR> \ n" +
"<TR> \ n" +
"<TD noWrap width = \" 100% \ "> Home address: <INPUT maxLength
= 255 name = author_http \ n "+
"Size = 36> </TD> </TR> \ n" +
"<TR> \ n" +
"<TD noWrap width = \" 100% \ "> * Email: <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% \ "> enter your message below: </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> emotion \ 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> 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> 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> 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> 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> \ "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> ) \ "Height = 14 \ n" +
"Src = \" 12.gif \ "width = 15> \ n" +
"<INPUT \ n" +
"Name = gifface type = radio value = 13> ) \ "Height = 14 \ n" +
"Src = \" 13.gif \ "width = 15> \ n" +
"<INPUT \ n" +
"Name = gifface type = radio value = 14> ) \ "Height = 14 \ n" +
"Src = \" 14.gif \ "width = 15> \ n" +
"<INPUT \ n" +
"Name = gifface type = radio value = 15> ) \ "Height = 14 \ n" +
"Src = \" 15.gif \ "width = 15> \ n" +
"<INPUT \ n" +
"Name = gifface type = radio value = 16> ) \ "Height = 14 \ n" +
"Src = \" 16.gif \ "width = 15> </TD> \ n" +
"</TR> \ n" +
"<TR> \ n" +
"<TD align = middle colSpan = 2 noWrap> <INPUT name = export go onclick = \" re
Turn ValidInput () \ "type = submit value = \" submit \ "> \ n" +

"<INPUT name = Your Prev onclick = \" return ValidInput () \ "type = submit valu
E = \ "preview \"> \ n "+
"<INPUT name = export cancel type = reset value = \" re-write \ "> <INPU
T name = cmdBack onclick = javascript: history. go (-1) type = button value = \ "back
Back to \ "> \ n" +
"</TD> </TR> </TBODY> </TABLE> </FORM> </CENTER> </DIV> ";
Out. print (lbottom );

</Body>

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