The functionality to be implemented is: Browsers can leave a message and can view the message, the administrator can process the message! This message board consists of 9 small programs, namely: Board.jsp; Message.html; OpenData .jsp; manger.jsp; password.jsp; check.jsp; delete.jsp; convert.jsp Now said the first: board.jsp His task is the main program of the entire message board, let the user leave a message, and provide paging Function! Before starting, we must establish a MyDate database in the MySQL database, build table named Message in Mudate: mysql> Create Table Message (Name Char (20), Email Char (40), Subject Char (60) , Time Char (60), SEX Char (10), MEMO TEXT, ID INT NOT NULL AUTO_INCREMENT, PRIMARY Key (ID)); Board.jsp code:
RMB </ Title></p>
<p></ Head import = "java.sql. *"%> <% @ Page contenttype = "text / html; charSet = GB2312"%> <% @ include file = "openData.jsp" %> <% Int count = 0, LASTP, NUMF, NUML, PREP, NEXTP, PAGENO; IF (Request.GetParameter ("Pageno") == NULL) // Pageno: The page number page is Pageno = 0; Else Pageno = Integer. PARSEINT (Request.GetParameter ("Pageno")); SQL = "Select * from Message"; rs = smt.executeQuery (SQL); while (rs.next ()) count ; <% - count: How much message - %> LastP = (int) Math.ceil (Double) count / 5); <% - to calculate a few pages in this table: CEIL returns the minimum integer greater than or equal to its numeric parameters. Math.ceil (NUMBER) The Number parameter is a numerical expression. Note The return value is a minimum integer greater than or equal to its numeric parameters. -%> IF (PAGENO == 0 || Pageno> Lastp) Pageno = lastp; Numf = Pageno * 5-4; <% - Number of the first data of the message display _ID -%> NUML = Numf 4; <% - NUML: The last data number ID -%> IF (PAGENO == 1) PREP = 1; <% - prep: Previous -%> else prep = Pageno-1; if (PAGENO == lastp) nextp = lastp; else nextp = Pageno 1; SQL = "Select * from message where id betWeen" Numf "and" Numl; rs = smt.executeQuery (SQL); %></p>
<p><font size = 7 color = green> Message board </ font> <hr> <center> <form action = Board.jsp method = post> <Table Boder = 0> <TR> <TD> Current Page <FONT Color = Red> <% = Pageno%> </ font> / <font color = blue> <% = lastp%> </ font> </ td> <td> <a href = board.jsp? Pageno = <% = preP% >> [Previous] </a> </ td> <% - Parameter Pageno is passed to the program, based on it calculates NUML and NUMF, and then remove the message data through SQL -%> <TD > <a href=Board.jsp?pageno=<%=NextP%> [Next] </a> </ td> <td> <a href=board.jsp?pageno=14 [first page ] </a> </ td> <td> [last page] </a> </ td> <td> input page <input type = text size = 3 name = Pageno > </ td> <td> <input type = submit name = send value = Send> </ td> <td> <a href=password.jsp> <font color = red size = "5"> <i> station Long special </ i> </ font> </a> </ td> </ tr> </ table> </ form> <% string name, email, subject, time, sex, memo; while (rs.next ()) {Name = rs.getstring (1); email = rs.getstring (2); subject = rs.getstring (3); time = rs.getstring (4); sex = rs.getstring (5); Memo = rs.getstring (6); out.print ("<center>"); out.print ("<Table Border = 1>"); out.print ("<TR> <TD BGColor = Yellow> Name </ TD> <TD> " Name " </ td> </ Tr> "); out.print (" <tr> <td bgcolor = YELLOW> E-mail </ td> <TD> email "</ td> </ tr>"); out.print ("< Tr> <TD BGCOLOR = Yellow></p>
<p>Time </ TD> <TD> " TIME " </ TD> </ TR> "); OUT.PRINT (" <TR> <TD BGColor = Yellow> Topic </ TD> <TD> Subject "< / TD> </ tr> "); out.print (" <tr> <td bgcolor = yellow> message </ td> <TD> " MEMO <IMG SRC =" SEX "> </ td> < / TR> "); out.print (" </ table> <p> ");}%> <hr> <center> <a href="message.html"> I want to leave a message </a> <a href = Board.jsp> View message </A></p>
<p></ Body> </ html></p></div><div class="text-center mt-3 text-grey">
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</div><div class="col text-right">Processed:
<b>0.050</b>, SQL:
<b>9</b></div></div></div></footer><script src="./lang/en-us/lang.js?2.2.0"></script><script src="view/js/jquery.min.js?2.2.0"></script><script src="view/js/popper.min.js?2.2.0"></script><script src="view/js/bootstrap.min.js?2.2.0"></script><script src="view/js/xiuno.js?2.2.0"></script><script src="view/js/bootstrap-plugin.js?2.2.0"></script><script src="view/js/async.min.js?2.2.0"></script><script src="view/js/form.js?2.2.0"></script><script>
var debug = DEBUG = 0;
var url_rewrite_on = 1;
var url_path = './';
var forumarr = {"1":"Tech"};
var fid = 1;
var uid = 0;
var gid = 0;
xn.options.water_image_url = 'view/img/water-small.png';
</script><script src="view/js/wellcms.js?2.2.0"></script><a class="scroll-to-top rounded" href="javascript:void(0);"><i class="icon-angle-up"></i></a><a class="scroll-to-bottom rounded" href="javascript:void(0);" style="display: inline;"><i class="icon-angle-down"></i></a></body></html><script>
var forum_url = 'list-1.html';
var safe_token = 'Gc5OaAcIfmZDJInkQI9_2FunRDJ0IjVdvGdAu7RG4XdiCfLOP94KJ0tXgO5qlaLaa4WkGy1GmIfYm8fiBGym5MjA_3D_3D';
var body = $('body');
body.on('submit', '#form', function() {
var jthis = $(this);
var jsubmit = jthis.find('#submit');
jthis.reset();
jsubmit.button('loading');
var postdata = jthis.serializeObject();
$.xpost(jthis.attr('action'), postdata, function(code, message) {
if(code == 0) {
location.reload();
} else {
$.alert(message);
jsubmit.button('reset');
}
});
return false;
});
function resize_image() {
var jmessagelist = $('div.message');
var first_width = jmessagelist.width();
jmessagelist.each(function() {
var jdiv = $(this);
var maxwidth = jdiv.attr('isfirst') ? first_width : jdiv.width();
var jmessage_width = Math.min(jdiv.width(), maxwidth);
jdiv.find('img, embed, iframe, video').each(function() {
var jimg = $(this);
var img_width = this.org_width;
var img_height = this.org_height;
if(!img_width) {
var img_width = jimg.attr('width');
var img_height = jimg.attr('height');
this.org_width = img_width;
this.org_height = img_height;
}
if(img_width > jmessage_width) {
if(this.tagName == 'IMG') {
jimg.width(jmessage_width);
jimg.css('height', 'auto');
jimg.css('cursor', 'pointer');
jimg.on('click', function() {
});
} else {
jimg.width(jmessage_width);
var height = (img_height / img_width) * jimg.width();
jimg.height(height);
}
}
});
});
}
function resize_table() {
$('div.message').each(function() {
var jdiv = $(this);
jdiv.find('table').addClass('table').wrap('<div class="table-responsive"></div>');
});
}
$(function() {
resize_image();
resize_table();
$(window).on('resize', resize_image);
});
var jmessage = $('#message');
jmessage.on('focus', function() {if(jmessage.t) { clearTimeout(jmessage.t); jmessage.t = null; } jmessage.css('height', '6rem'); });
jmessage.on('blur', function() {jmessage.t = setTimeout(function() { jmessage.css('height', '2.5rem');}, 1000); });
$('#nav li[data-active="fid-1"]').addClass('active');
</script>
