asked on

JSP NullPointer Error

Hi,

I'm pretty new to JSP troubleshooting. I'm receiving the following error. Any ideas?

exception

org.apache.jasper.JasperException
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:372)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause

java.lang.NullPointerException
	com.monumental.trampoline.utilities.forms.multipart.MultipartRequest.getFile(MultipartRequest.java:72)
	org.apache.jsp.admin.productfamilies.process_005fnavigation_jsp._jspService(process_005fnavigation_jsp.java:199)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

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cmalakar

Your jsp is trying to read some file object from com.monumental.trampoline.utilities.forms.multipart.MultipartRequest, which is null.

Hence you are getting Null Pointer exception.

Please post your jsp, We can tell you which line the error is coming.

FrostyGirl

ASKER

Hi... thanks for your help. Code is below:

<%@ page language="java" %>
<%@ page import="com.vlm.productfamilies.*" %>
<%@ page import="com.vlm.producttypes.*" %>
<%@ page import="com.monumental.trampoline.security.*" %>
<%@ page import="com.monumental.trampoline.component.*" %>

<jsp:useBean id="dbResources" class="com.monumental.datasources.rdbms.DbResources" />
<jsp:useBean id="userbean" class="com.monumental.trampoline.security.UserBean"/>
<% userbean.init(pageContext); %>
<% User user = userbean.getUser(); %>
<% userbean.onlyUsers( "../reload.jsp"); %>
<% CompProperties props = new CompProperties(); %>
<% boolean htmlHelp = userbean.getUser().getHtmlHelp(); %>
<%

int contid = 0;
if(request.getParameter(ProductFamily.PARAM)!=null) {
	contid = Integer.parseInt(request.getParameter(ProductFamily.PARAM));
	}
ProductFamilyController control = new ProductFamilyController(dbResources,props.getAdminConfiguration());
ProductFamily content = (ProductFamily)control.get(contid);

boolean add = false;
Permission permission = new Permission();
if( user.getGroup().hasData() ) {
	permission = user.getGroup().getPermission( new ProductFamily() );
	}
if(permission.getAdd()) {
	add = true;
	}

boolean edit = false;
if(content.isNew() && content.getUserId()==user.getId()) {
	edit = true;
	} else if(content.getLockedBy()==user.getId() ) {
	edit = true;
	}

SpecGroupController sgControl = new SpecGroupController(dbResources, props.getAdminConfiguration());
SpecificationController specControl = new SpecificationController(dbResources, props.getAdminConfiguration());
OptionController optionControl = new OptionController(dbResources, props.getAdminConfiguration());
TypeGroupLinkController linkControl = new TypeGroupLinkController(dbResources, props.getAdminConfiguration());
SpecAnswerController answerControl = new SpecAnswerController(dbResources, props.getAdminConfiguration());


CompEntities allSpecGroups = linkControl.getByType(content.getTypeId());
	
	
%>
<% int userid = userbean.getUser().getId(); %>


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1" />
<title></title>
<style type="text/css">
@import url(../common/main.css);
@import url(../common/vlm.css);
</style>
</head>

<body>
<div id="bodycontent">
<% if(content.getId()==0) { %>
<p>No Content Exists With Content Id: <%= contid %></p>
<% } else { %>
	<script language="javascript">parent.header.menuOn('specs',<%= contid %>,"<%= content.getTitle() %>");</script>	
	<% int tabindex = 1; %>
		<div class="fieldsetholder">
		<fieldset>
			<legend>edit product family <%= content.getTitle() %></legend>
			<% while(allSpecGroups.hasNext())
			{
				TypeGroupLink thisGroup = (TypeGroupLink)allSpecGroups.next();
				SpecGroup justTitle = (SpecGroup)sgControl.get(thisGroup.getGroupId());
				CompEntities allSpecs = specControl.getByLinkId(thisGroup.getId());
				%>
				
				<h2><%= justTitle.getTitle() %></h2>
				<table>
				<% while(allSpecs.hasNext())
				{
					Specification spec = (Specification)allSpecs.next();
					SpecAnswer answer = (SpecAnswer)answerControl.getByFamilyIdAndSpecId(contid, spec.getId());
					
					%>
						<tr>
							<td>
								<form method="post" action="process_specs.jsp">
								<label for="<%= Specification.TITLE_COLUMN %>"><%= spec.getTitle() %></label>
							</td>
					<% if(spec.getSelectType().equals(Specification.whichSelect[0]))
					{ 	%>
						<td>
							<input type="text" name="<%= SpecAnswer.VALUE_COLUMN %>" <% if(answer.hasData()) { %> value="<%= answer.getValue() %>" <% } %>/>
						</td>
					<% }
					else
					{ %>
						<td>
							<select name="<%= SpecAnswer.VALUE_COLUMN %>">
							<% Option option = new Option();
							CompEntities allOptions = optionControl.getBySpecId(spec.getId());
							while(allOptions.hasNext())
							{
								option = (Option)allOptions.next();
								%>
								<option value="<%= option.getValue() %>" <% if(answer.hasData() && answer.getValue().equals(option.getValue())) { %> selected="selected" <% } %>><%= option.getTitle() %></option>
							<% } %>
							</select>
						</td>
					<% } %>
					<% if(answer.hasData())
					{ %>
						<td>
							<input type="hidden" name="action" value="update_spec" />
							<input type="hidden" name="answer_id" value="<%= answer.getId() %>" />
							<input type="submit" value="update spec" />
							<input type="hidden" name="family_id" value="<%= contid %>" />
							<input type="hidden" name="spec_id" value="<%= spec.getId() %>" />
						</form>
						</td>
						<td>
						<form method="post" action="process_specs.jsp">
							<input type="hidden" name="action" value="delete_spec" />
							<input type="hidden" name="answer_id" value="<%= answer.getId() %>" />
							<input type="submit" value="Delete Spec" />
							<input type="hidden" name="family_id" value="<%= contid %>" />
							<input type="hidden" name="spec_id" value="<%= spec.getId() %>" />
						</form>
					</td>
					<% }
					else
					{ %>
						<td>
						<input type="hidden" name="action" value="add_spec" />
						<input type="submit" value="add spec" />
						<input type="hidden" name="family_id" value="<%= contid %>" />
						<input type="hidden" name="spec_id" value="<%= spec.getId() %>" />
						</form>
						</td>
					<% } %>
				
				</tr>
				<% } %>
			</table>
			<% } %>
		</fieldset>
		</div>
<% } %>	
</div>

</body>
</html>
<% dbResources.close(); %>

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cmalakar

I believe, this is not the jsp which is getting error ?

do you have some jsp called "process_005fnavigation.jsp" ?

FrostyGirl

ASKER

I have a page called process_navigation.jsp... code below:

<%@ page language="java" %>
<%@ page import="com.monumental.trampoline.component.*" %>
<%@ page import="com.monumental.trampoline.navigation.*" %>
<%@ page import="com.monumental.trampoline.security.*" %>
<%@ page import="com.vlm.productfamilies.*" %>
<%@ page import="com.monumental.trampoline.utilities.forms.multipart.*" %>
<%@ page import="java.io.*" %>

<jsp:useBean id="dbResources" class="com.monumental.datasources.rdbms.DbResources" />
<jsp:useBean id="userbean" class="com.monumental.trampoline.security.UserBean" />
<% userbean.init(pageContext, dbResources); %>
<% userbean.onlyUsers( "/trampoline/admin/reload.jsp"); %>
<% User user = userbean.getUser(); %>
<% CompProperties props = new CompProperties(); %>
<%
	

	
ProductFamilyNavigationController navcontrol = new ProductFamilyNavigationController(dbResources,props.getAdminConfiguration());
ProductFamilyNavigation navigation = new ProductFamilyNavigation();
navigation.clearData();

String action = request.getParameter("action");
String redirect = request.getHeader("referer");
String onlypages = request.getParameter("only");


MultipartRequest multipart = null;
String basePath = pageContext.getServletContext().getRealPath("/");
int contid = 0;

if (request.getParameter("action")==null) {
	String uploadDir = basePath + navigation.getComponentUploadDirectory()  + "/" + user.getId();	
	File createDir = new File(uploadDir);
	if(!createDir.exists()) {
		createDir.mkdirs();
	}

	multipart = new MultipartRequest(request,uploadDir,105242880);
	action = multipart.getParameter("action");
	if(multipart.getParameter(ProductFamilyNavigation.PARAM)!=null) {
		contid = Integer.parseInt(multipart.getParameter(ProductFamilyNavigation.PARAM));
	}
} else {
	if(request.getParameter(ProductFamilyNavigation.PARAM)!=null) {
		contid = Integer.parseInt(request.getParameter(ProductFamilyNavigation.PARAM));
	}
}


if (action!=null && action.equals("add")) {
	navigation.setParentId(Integer.parseInt(multipart.getParameter(ProductFamilyNavigation.PARENT_ID_COLUMN)));
	navigation.setName(multipart.getParameter(ProductFamilyNavigation.NAME_COLUMN));
	navigation.setDescription(multipart.getParameter(ProductFamilyNavigation.DESCRIPTION_COLUMN));
	
	
	int myId = navcontrol.addNavigation(navigation);
	
	navigation.setId(myId);	

	//Do some file uploading here for the picture
	File upload = multipart.getFile(ProductFamilyNavigation.PICTURE_COLUMN);
	if(upload != null)
	{
		String newName = upload.getName().replace(' ','_');
		navcontrol.deleteFileFromContentDirectory(basePath, navigation, navigation.getPicture());
		boolean success = navcontrol.saveFileToContentDirectory(upload, basePath, navigation, newName,true);
		upload.delete();
		navigation.setPicture(newName);
	}
	
	//Do some file uploading here for the picture
	upload = multipart.getFile(ProductFamilyNavigation.ROLLOVER_COLUMN);
	if(upload != null) {
		String newName = upload.getName().replace(' ','_');
		navcontrol.deleteFileFromContentDirectory(basePath, navigation, navigation.getRollOver());
		boolean success = navcontrol.saveFileToContentDirectory(upload, basePath, navigation, newName,true);
		upload.delete();
		navigation.setRollOver(newName);
	}
	
	navcontrol.updateNavigation(navigation);
    
}

if (action!=null && action.equals("status")) {
    navigation.setId(Integer.parseInt(request.getParameter(ProductFamilyNavigation.PARAM)));
    if( request.getParameter(ProductFamilyNavigation.STATUS_COLUMN).equals("active") ) {
    	navigation.setActive(true);
    	} else {
    	navigation.setActive(false);
    	}    
    navcontrol.updateNavigation(navigation);
}

if (action!=null && action.equals("location")) {
    navigation.setId(Integer.parseInt(request.getParameter(ProductFamilyNavigation.PARAM)));
    navigation.setParentId(Integer.parseInt(request.getParameter(ProductFamilyNavigation.PARENT_ID_COLUMN)));
    navigation.setPosition(1);    
    navcontrol.updateNavigation(navigation);
    navcontrol.setNavigationPosition(navigation);
	if(onlypages != null) { 
		redirect = "navigation.jsp?" + ProductFamilyNavigation.PARAM + "=" + navigation.getParentId() + "&only=pages";
	} else {
		redirect = "navigation.jsp?" + ProductFamilyNavigation.PARAM + "=" + navigation.getParentId();	
	}

}

if (action!=null && action.equals("order")) {
    navigation.setId(Integer.parseInt(request.getParameter(ProductFamilyNavigation.PARAM)));
    navigation.setPosition(Integer.parseInt(request.getParameter(ProductFamilyNavigation.POSITION_COLUMN)));    
    navcontrol.setNavigationPosition(navigation);
}

if (action!=null && action.equals("edit")) {
    navigation.setId(Integer.parseInt(multipart.getParameter(ProductFamilyNavigation.PARAM)));
    navigation.setName(multipart.getParameter(ProductFamilyNavigation.NAME_COLUMN)); 
    navigation.setDescription(multipart.getParameter(ProductFamilyNavigation.DESCRIPTION_COLUMN));
	
   	File upload = multipart.getFile(ProductFamilyNavigation.PICTURE_COLUMN);
	if(upload != null)
	{
		String newName = upload.getName().replace(' ','_');
		navcontrol.deleteFileFromContentDirectory(basePath, navigation, navigation.getPicture());
		boolean success = navcontrol.saveFileToContentDirectory(upload, basePath, navigation, newName,true);
		upload.delete();
		navigation.setPicture(newName);
	}
	
	//Do some file uploading here for the picture
	upload = multipart.getFile(ProductFamilyNavigation.ROLLOVER_COLUMN);
	if(upload != null) {
		String newName = upload.getName().replace(' ','_');
		navcontrol.deleteFileFromContentDirectory(basePath, navigation, navigation.getRollOver());
		boolean success = navcontrol.saveFileToContentDirectory(upload, basePath, navigation, newName,true);
		upload.delete();
		navigation.setRollOver(newName);
	}
	
	navcontrol.updateNavigation(navigation);
}

if (action!=null && action.equals("link")) {
    navigation.setId(Integer.parseInt(request.getParameter(ProductFamilyNavigation.PARAM)));
    navigation.setReferenceId(Integer.parseInt(request.getParameter(ProductFamilyNavigation.REFERENCE_ID_COLUMN)));   
    navcontrol.updateNavigation(navigation);
}
/*
if (action!=null && action.equals("template")) {
    navigation.setId(Integer.parseInt(request.getParameter(ProductFamilyNavigation.PARAM)));
    navigation.setTemplateId(Integer.parseInt(request.getParameter(ProductFamilyNavigation.TEMPLATE_ID_COLUMN)));
    //navigation.setContentTemplateId(Integer.parseInt(request.getParameter(ProductFamilyNavigation.CONTENT_TEMPLATE_ID_COLUMN)));    
    navcontrol.updateNavigation(navigation);
}
*/
if (action!=null && action.equals("delete")) {
    navigation.setId(Integer.parseInt(request.getParameter(ProductFamilyNavigation.PARAM)));
    ProductFamilyNavigationContent navContent;
    
    //delete page navigation
    navContent = new com.vlm.productfamilies.ProductFamilyNavigationContent();
    navContent.setNavigationId(navigation.getId());
    navcontrol.deleteNavigationContentByNavigation(navContent);
           
    navcontrol.deleteNavigation(navigation.getId());
    redirect = "navigation.jsp";
}

ProductFamilyNavigationCacheBean cache = new ProductFamilyNavigationCacheBean();
cache.init( pageContext, dbResources );
cache.resetCache();

dbResources.close();
response.sendRedirect(redirect);
%>

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cmalakar

Here is the problem in your jsp.

You create object of multipart object inside an if condition "if (request.getParameter("action")==null) {"

And you access multipart object in another if condition "if (action!=null && action.equals("add")) {"

Both conflict with each other, hence null pointer exception.

FrostyGirl

ASKER

How can I fix?

ASKER CERTIFIED SOLUTION

cmalakar

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FrostyGirl

ASKER

That made 1 error go away but then another appear. I can 'accept as solution' and open a new question if you can continue to help?

cmalakar

What error you are getting ?

FrostyGirl

ASKER

The page is now displaying information about the navigation item. When I click 'edit this navigation item,'' a new navigation bar temporarily appears, then disappears. this 'nav bar' needs to remain. Also, if I'm fast enough to scroll up to the 'spawned nav bar' before it disappears, and I click on status (status of the item) it reports:

No Content Exists With Content Id: 0

If I click on ''details" (another nav choice from the 'spawned nav bar')', which takes you to a different page, I receive this error:

org.apache.jasper.JasperException
      org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:372)
      org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
      org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
      javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause

java.lang.NullPointerException
      org.apache.jsp.admin.productfamilies.navigation_005fdetails_jsp._jspService(navigation_005fdetails_jsp.java:86)
      org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
      javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
      org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
      org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
      org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
      javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

cmalakar

looks like you have similar kind of error in navigation_details.jsp

FrostyGirl

ASKER

Code for the ...details.jsp page below:

<%@ page language="java" %>
<%@ page import="com.monumental.trampoline.component.*" %>
<%@ page import="com.monumental.trampoline.component.rdbms.*" %>
<%@ page import="com.monumental.trampoline.navigation.*" %>
<%@ page import="com.monumental.trampoline.content.*" %>
<%@ page import="com.monumental.trampoline.security.*" %>
<%@ page import="com.vlm.productfamilies.*" %>

<jsp:useBean id="dbResources" class="com.monumental.datasources.rdbms.DbResources" />
<jsp:useBean id="userbean" class="com.monumental.trampoline.security.UserBean" />
<jsp:useBean id="catbean" class="com.vlm.productfamilies.ProductFamilyNavigationCacheBean" />
<% userbean.init(pageContext, dbResources); %>
<% userbean.onlyUsers( "../reload.jsp"); %>
<% CompProperties props = new CompProperties(); %>
<%
boolean edit = true;
Permission permission = new Permission();
User user = userbean.getUser();
if( user.getGroup().hasData() ) {
	permission = user.getGroup().getPermission( new Navigation() );
	}
if(permission.getEdit()) {
	edit = true;
	}
%>
<%
catbean.init(pageContext, dbResources);
ProductFamilyNavigationCache catcache = catbean.getCache();
CompEntities navigations = catcache.getTree();
CompEntities tree;
ProductFamilyNavigation tempNav;
ProductFamilyNavigation navigation = catcache.getNavigation(Integer.parseInt(request.getParameter(Navigation.PARAM)));

TemplateCache tempcache = new TemplateCache(dbResources,props.getAdminConfiguration());
TemplateController tempcontrol = new TemplateController(dbResources,props.getAdminConfiguration());
CompEntities templates2 = tempcontrol.getTemplates( true );
Template template;
CompEntities templates = new CompEntities();
while(templates2.hasNext()) {
	template = (Template)templates2.next();
	template = (Template)tempcache.getTemplate(template.getId());
	templates.add(template);
}

dbResources.close();
%>
<% boolean onlypages = false; %>
<% if(request.getParameter("only") != null) { 
		onlypages = true;
	}
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1" />
<title></title>
<style type="text/css">
@import url(../common/main.css);
</style>
</head>
<body>
<div id="bodycontent">
<% if(!onlypages) { %>
<script language="javascript">parent.header.location.href = 'header.jsp';</script>	
<% } %>
    <% int tabindex = 1; %>
	<h1 id="navigationdetailssheader">navigation details</h1>

	<form method="post" action="process_navigation.jsp" class="miscform" enctype="multipart/form-data">	
		<fieldset>
			<legend>general information</legend>
			<label for="<%= Navigation.NAME_COLUMN %>">name:</label>
			<input type="text" size="50" id="<%= Navigation.NAME_COLUMN %>" name="<%= Navigation.NAME_COLUMN %>" tabindex="<%=tabindex++%>" value="<%= navigation.getName() %>"/>
			<br />
			<label for="<%= ProductFamilyNavigation.DESCRIPTION_COLUMN %>">description:</label>
			<textarea type="text" cols="50" rows="2"  id="<%= ProductFamilyNavigation.DESCRIPTION_COLUMN %>" name="<%= ProductFamilyNavigation.DESCRIPTION_COLUMN %>" tabindex="<%=tabindex++%>" /><%= navigation.getDescription() %></textarea>
			<br />
			<label for="<%= ProductFamilyNavigation.PICTURE_COLUMN %>">picture:</label>			
			<% if((navigation.getId()!=0) && (navigation.getPicture().length() > 0))
			{ %>
				<input type="file" id="<%= ProductFamilyNavigation.PICTURE_COLUMN %>" name="<%= ProductFamilyNavigation.PICTURE_COLUMN %>" tabindex="<%=tabindex++%>" />
				<a href="<%= request.getContextPath() %>/<%= navigation.getContentDirectory() %>/<%= navigation.getPicture() %>" target="_blank">Picture</a>
			<% }
			else
			{ %>
				<input type="file" id="<%= ProductFamilyNavigation.PICTURE_COLUMN %>" name="<%= ProductFamilyNavigation.PICTURE_COLUMN %>" tabindex="<%=tabindex++%>" />
			<% } %>
			<br />
			
			<br />			

			<% if(onlypages) {%>
			<input type="hidden" name="only" value="pages" />						
			<% } %>			
			
			<input type="hidden" name="<%= ProductFamilyNavigation.PARAM %>" value="<%= navigation.getId() %>" />
			<input type="hidden" name="action" value="edit" />
			<input class="submit" type="submit" name="submit" value="edit" tabindex="<%=tabindex++%>" />
		</fieldset>
	</form>	
	<br />
	<form method="get" action="process_navigation.jsp" class="miscform">
		<fieldset>
			<legend>set location</legend>
			<label for="<%= Navigation.PARENT_ID_COLUMN %>">location</label>
			<select name="<%= Navigation.PARENT_ID_COLUMN %>" tabindex="<%=tabindex++%>">
				<option value="0">Top Level</option>
				<option value="<%= navigation.getParentId() %>">------------</option>
				<% int insert = 0; %>
				<% boolean safe = true; %> 
				<% while(navigations.hasNext()) { %>
					<% safe = true; %>
					<% tempNav = (ProductFamilyNavigation)navigations.next(); %>
					<% tree = catcache.getNavigationHierarchy(tempNav); %>
					<% while(tree.hasNext()) { %>
						<% if( ((ProductFamilyNavigation)tree.next()).getId() == navigation.getId() ) { safe = false; break;} %>	
					<% } %>
					<% if(safe) { %>
						<% insert = tree.howMany()-1; %> 
						<option value="<%= tempNav.getId() %>" <% if(tempNav.getId()==navigation.getParentId()) { %>selected<% } %>><% for( int z=0; z<insert; z++ ) { %>&nbsp;&nbsp;&nbsp;&nbsp;<% } %><%= tempNav.getName() %></option>
					<% } %>
				<% } %> 
			</select>
			<br />
			<% if(onlypages) {%>
			<input type="hidden" name="only" value="pages" />						
			<% } %>				
			<input type="hidden" name="<%= Navigation.PARAM %>" value="<%= navigation.getId() %>" />
			<input type="hidden" name="action" value="location" />
			<input class="submit" type="submit" value="set location" tabindex="<%=tabindex++%>"/>
		</fieldset>
	</form>			
	<br />
	<form method="post" action="process_navigation.jsp" class="miscform">	
		<fieldset>
			<legend>link to another navigation</legend>
			<label for="<%= Navigation.REFERENCE_ID_COLUMN %>">navigation:</label>
			<select name="<%= Navigation.REFERENCE_ID_COLUMN %>" tabindex="<%=tabindex++%>">
				<option value="0">none</option>
				<option value="<%= navigation.getReferenceId() %>">------------------</option>
				<% while(navigations.hasNext()) { %>
					<% ProductFamilyNavigation listnav = (ProductFamilyNavigation)navigations.next(); %>
					<% tree = catcache.getNavigationHierarchy(listnav); %>
					<% insert = tree.howMany()-1; %>
					<option value="<%= listnav.getId() %>" <% if(navigation.getReferenceId()==listnav.getId()) { %>selected<% } %>><% for( int x=0; x<insert; x++ ) { %>&nbsp;&nbsp;&nbsp;<% } %><%= listnav.getName() %></option>
				<% } %>
			</select>
			<br />
			<% if(onlypages) {%>
			<input type="hidden" name="only" value="pages" />						
			<% } %>			
			<input type="hidden" name="<%= Navigation.PARAM %>" value="<%= navigation.getId() %>" />
			<input type="hidden" name="action" value="link" />
			<% if(edit) { %>
				<input class="submit" type="submit" value="link" tabindex="<%=tabindex++%>"/>
			<% } %>	
		</fieldset>
	</form>
	
	
	<% CompEntities deleteSubs = catcache.getAllSubNavigations(navigation.getId()); %>
	<% if(deleteSubs.howMany()==0) { %>	
	<br />
	<form method="post" action="process_navigation.jsp" class="miscform">
		<fieldset>
			<legend>delete navigation</legend>
			<label for="">delete:</label>
			<input type="hidden" name="<%= Navigation.PARAM %>" value="<%= navigation.getId() %>">
			<% if(onlypages) {%>
			<input type="hidden" name="only" value="pages" />						
			<% } %>			
			<% if(edit) { %>
				<input type="checkbox" name="action" value="delete" tabindex="<%=tabindex++%>"/>
				<input type="submit" value="delete" tabindex="<%=tabindex++%>"/>
			<% } %>		
		</fieldset>
	</form>	
	<% } %>	
	<br />
	<form method="post" action="navigation.jsp" class="miscform">
		<fieldset>
			<legend>return to navigation list</legend>
			<% if(onlypages) {%>
			<input type="hidden" name="only" value="pages" />						
			<% } %>			
			<input class="submit" type="submit" value="done" tabindex="<%=tabindex++%>"/>
		</fieldset>
	</form>	
    <br />
    <br />

</div></body>
</html>

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cmalakar

it is not clear from the above jsp, where exactly the error is coming.

You need to look into 86th line of navigation_005fdetails_jsp.java, to figure out what is coming as null.

FrostyGirl

ASKER

Excellent help.