Pressing the enter key at the jsp page receive extra invalid data at the ProdController.java.
The alertgroupStr receive "unack" as expected.
However, I do not understand why alertgroupStr receive the extra invalid "null" later.
Debug log:
11:14:52,187 DEBUG com.systems.monitoring.war.ProdController:54 - alertgroupStr unack
...
11:14:52,187 DEBUG com.systems.monitoring.war.ProdController:54 - alertgroupStr null
ProdController.java:
@Override
public ModelAndView handleRequestInternal(HttpServletRequest request,
HttpServletResponse response) throws Exception {
String alertgroupStr = request.getParameter("alertgroup");
logger.debug("alertgroupStr " + alertgroupStr);Jsp page:
<?xml version="1.0" encoding="UTF-8" ?>
<%@ include file="/WEB-INF/jsp/includeTaglibs.jsp"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<link rel="stylesheet" type="text/css" media="all"
href="/static/css/style.css" />
<link rel="stylesheet" type="text/css" media="all"
href="/static/css/tablist.css" />
<script type="text/javascript" src="/static/js/prototype.js"></script>
<script type="text/javascript" src="js/util.js"></script>
<title>Hw Monitoring
<%@page import="org.springframework.beans.*" %>
<%@page import="org.springframework.context.*" %>
<%@page import="org.springframework.web.servlet.support.*" %>
</title>
<style type="text/css">
.pageNumber {
float:left;
padding: 3px 0;
margin-left: 0;
margin-bottom: 0;
margin-top: 0.1em;
font: bold 12px Verdana;
}
.pageNumber .noLink{
float:left;
padding: 3px 0.5em;
margin-right: 3px;
margin-top: 3px;
border: 1px solid white;
border-bottom: 1px solid white;
background: white;
}
.pageNumber a{
float:left;
text-decoration: none;
padding: 3px 0.5em;
margin-right: 3px;
margin-top: 3px;
border: 1px solid #778;
border-bottom: 1px solid gray;
background: white;
}
.pageNumber a:hover{
border-color: navy;
background-color: #8dd8f8;
color: #FFF;
}
.rowPerPage {
float:left;
padding: 3px 0;
margin-left: 0;
margin-bottom: 0;
margin-top: 0.1em;
font: bold 12px Verdana;
}
</style>
</head>
<script type="text/javascript">
function init()
{
}
function isEmpty(v) {
return (v == null) || (v.length == 0);
}
function isInteger(v) {
return !isEmpty(v) && !/[^\d]/.test(v);
}
function setalertgroup() {
var alertgroup = 'all';
var elem = document.getElementsByName("alertradio");
for (var i = 0; i < elem.length; i++) {
if (elem[i].checked) {
alertgroup = elem[i].value;
}
}
alert('alertgroup ' + alertgroup);
var rowsPerPageElem = document.getElementById("rowsPerPage");
var rowsPerPage = rowsPerPageElem.value;
alert(' rowsPerPage ' + rowsPerPage);
if (!isInteger(rowsPerPage)) {
alert('Rows per page should be an integer. It is set to the default value of 20');
rowsPerPage = 20;
}
var chkelem = document.getElementById("includingUnassignedTags");
var includingUnassignedTags = chkelem.checked;
alert(' includingUnassignedTags ' + includingUnassignedTags);
window.location = "Prod?rowsPerPage=" + rowsPerPage +
"&includingUnassignedTags=" + includingUnassignedTags + "&alertgroup=" + alertgroup;
}
function setUnassignedTags()
{
setalertgroup();
return false;
}
function postCheckbox(id, boxid, labelid) {
var elem = document.getElementById(labelid);
var checked = document.getElementById(boxid).checked;
new Ajax.Request("ProdManager", {
method: "post",
parameters: {
id: id,
boxchecked: checked
},
onComplete: function(){}
});
if (checked)
elem.style.color = 'green';
else
elem.style.color = 'red';
}
function refresh() {
window.location.reload(true);
}
function timedRefresh(timeoutPeriod) {
setTimeout("refresh();", timeoutPeriod);
}
</script>
<body onload="init()">
<div id="mainmenu">
<h1><spring:message code="Hw.header"/></h1>
<div id="Logo"><img src="/static/img/Logo.jpg" width="63" height="63" alt=" Sytems"></div>
</div>
<ul id="tablist">
<li class="sprite1 active"><a href="/Hw/Prod"><spring:message
code="menu.alerts"/></a></li>
<li class="sprite1"><a href="/MonitoringDBWeb/listReaders"><spring:message
code="menu.locators"/></a></li>
<li class="sprite1"><a href="/MonitoringDBWeb/listAssets"><spring:message
code="menu.assets"/></a></li>
<li class="sprite1"><a href="/MonitoringDBWeb/listCategories"><spring:message
code="menu.categories"/></a></li>
<li class="sprite1"><a href="/MonitoringDBWeb/dbadmin"><spring:message
code="menu.administration"/></a></li>
<li class="sprite1"><a href="/MonitoringDBWeb/displayReadMe"><spring:message
code="menu.readme"/></a></li>
</ul>
<form name="alertform" method="get">
<spring:message code="alert.choice"/>
<c:choose>
<c:when test="${alertgroup == 'all'}">
<input type="radio" name="alertradio" value="all" CHECKED onClick="setalertgroup()" /> <spring:message code="alert.all"/>
<input type="radio" name="alertradio" value="ack" onClick="setalertgroup()" /> <spring:message code="alert.ack"/>
<input type="radio" name="alertradio" value="unack" onClick="setalertgroup()" /> <spring:message code="alert.unack"/>
</c:when>
<c:when test="${alertgroup == 'ack'}">
<input type="radio" name="alertradio" value="all" onClick="setalertgroup()" /> <spring:message code="alert.all"/>
<input type="radio" name="alertradio" value="ack" CHECKED onClick="setalertgroup()" /> <spring:message code="alert.ack"/>
<input type="radio" name="alertradio" value="unack" onClick="setalertgroup()" /> <spring:message code="alert.unack"/>
</c:when>
<c:when test="${alertgroup == 'unack'}">
<input type="radio" name="alertradio" value="all" onClick="setalertgroup()" /> <spring:message code="alert.all"/>
<input type="radio" name="alertradio" value="ack" onClick="setalertgroup()" /> <spring:message code="alert.ack"/>
<input type="radio" name="alertradio" value="unack" CHECKED onClick="setalertgroup()" /> <spring:message code="alert.unack"/>
</c:when>
<c:otherwise>
<input type="radio" name="alertradio" value="all" CHECKED onClick="setalertgroup()" /> <spring:message code="alert.all"/>
<input type="radio" name="alertradio" value="ack" onClick="setalertgroup()" /> <spring:message code="alert.ack"/>
<input type="radio" name="alertradio" value="unack" onClick="setalertgroup()" /> <spring:message code="alert.unack"/>
</c:otherwise>
</c:choose>
<c:set var="untagchk" value="" />
<c:if test="${includingUnassignedTags}">
<c:set var="untagchk" value="checked" />
</c:if>
<input type="checkbox" name="includingUnassignedTags" id="includingUnassignedTags" ${untagchk} onClick="setUnassignedTags()"><spring:message code="alert.unassignedtags"/>
<spring:message code="alert.number"/>${totalalerts}
<c:if test="${numPages > 0}">
<spring:message code="alert.page"/>${pageNumber} <spring:message code="alert.of"/> ${numPages}
</c:if>
<table class="resizable">
<thead>
<tr>
<th><spring:message code="alert.id"/></th>
<th><spring:message code="alert.date"/></th>
<th><spring:message code="alert.time"/></th>
<th><spring:message code="alert.reader"/></th>
<th><spring:message code="alert.asset"/></th>
<th><spring:message code="alert.description"/></th>
<th><spring:message code="alert.alert"/><br></br>
<spring:message code="alert.acknowledgement"/></th>
</tr>
</thead>
<tbody>
<c:set var="boxindex" value="0" />
<c:forEach items="${alerts}" var="alert">
<tr>
<c:forEach items="${alert}" var="alertvalue" begin="0" end="5"
step="1">
<td>${alertvalue}</td>
</c:forEach>
<!-- ${alert[0]} : ID -->
<!-- ${alert[6]} : the checked attribute -->
<c:set var="spanid" value="span${alert[0]}" />
<c:if test="${alert[6] == 'checked'}">
<c:set var="format_start" value="<span id='${spanid}' class='fg-green'>" />
</c:if>
<c:if test="${alert[6] == 'unchecked'}">
<c:set var="format_start" value="<span id='${spanid}' class='fg-red'>" />
</c:if>
<td><c:set var="boxindex" value="${boxindex+1}" />
<c:set var="boxid" value="box${alert[0]}" />
<c:out value="${format_start}" escapeXml="false" />
<input type="checkbox" name="checkboxChoice" id="${boxid}"
value="${alert[0]}"
${alert[6]} onClick="postCheckbox(${alert[0]}, '${boxid}', '${spanid}');">
<spring:message code="alert.ack"/>
</span></td>
</tr>
</c:forEach>
</tbody>
</table>
</form>
<c:if test="${numPages > 1}">
<div class="pageNumber">
<span class="noLink"><spring:message code="alert.page"/> </span>
<c:forEach begin="1" end="${numPages}" varStatus="status">
<c:choose>
<c:when test="${status.index==pageNumber}"><span class="noLink">${status.index}</span></c:when>
<c:otherwise><a href="Prod?page=${status.index}&alertgroup=${alertgroup}&includingUnassignedTags=${includingUnassignedTags}&rowsPerPage=${rowsPerPage}">${status.index}</a></c:otherwise>
</c:choose>
</c:forEach>
</div>
</c:if>
<div id="rowPerPageDiv">
<form name="tagform" onsubmit="setUnassignedTags()" method="get">
<input type="hidden" name="currPage" value="${currPage}"/>
<spring:message code="alert.rowsperpage"/><input type="text" name="rowsPerPage" id="rowsPerPage" value="${rowsPerPage}" />
<input type="submit" value="Apply"><br>
</form>
</div>
<hr><center><font size="-1"><spring:message code="Hw.trademark"/></font> <a href="http://www.systems.com/" title="Hw">
<img border="0" src="/static/img/systems.gif" title="Hw"
alt=" Systems"></a> </center>
</body>
</html>