Jforum Integration Issue with My Web application

[subodh joshi]

I am trying to integrating Jforum with my project and i tried this http://www.skill-guru.com/blog/2009/07/31/jforum-integration-with-a-spring-and-jsf-webapplication/

But when i am trying to access it with this Url http://localhost:8080/myapp/forums/list.page
i Got below exception

SEVERE: StandardWrapper.Throwable
net.jforum.exceptions.CacheEngineStartupException: Error while starting the cache engine
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:188)
	at net.jforum.ConfigLoader.startCacheEngine(ConfigLoader.java:233)
	at net.jforum.JForumBaseServlet.init(JForumBaseServlet.java:86)
	at net.jforum.JForum.init(JForum.java:113)
	at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1266)
	at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1185)
	at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:857)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:136)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1001)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.NullPointerException
	... 22 more

Jul 15, 2014 5:44:33 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Allocate exception for servlet jforum
java.lang.NullPointerException
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:188)
	at net.jforum.ConfigLoader.startCacheEngine(ConfigLoader.java:233)
	at net.jforum.JForumBaseServlet.init(JForumBaseServlet.java:86)
	at net.jforum.JForum.init(JForum.java:113)
	at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1266)
	at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1185)
	at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:857)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:136)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1001)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:722)

Can anyone tell What i miss to configure or something else?

[Ulf Dittmer]

What does "integrate" mean? What changes have you made to the JForum code base? Did JForum run correctly before you made any changes?

Note that the preferred JForum version is the one at https://code.google.com/p/jforum2/ - it has multiple bug fixes and enhancements over the original version (which is no longer maintained).

[subodh joshi]

I copied all jar file into my project /WEB-INF/lib folder also copied config directory into WEB-INF folder and also SSO changes all those thing which mentioned in this link http://www.skill-guru.com/blog/2009/07/31/jforum-integration-with-a-spring-and-jsf-webapplication/ But i am getting exception which i mentioned in post

[Ulf Dittmer]

The cache subsystem seems unable to start up, but it's not clear hwy that is - apparently some class is missing. Make sure the cache settings in SystemGlobals.properties all make sense, and that the involved classes and jar files are present.

Did JForum run correctly before you made any changes?

?
In other words, have you gotten the web app to run is is? If not, that's what I would start with, before adding it to your web app.

[subodh joshi]

Hi Thanks for your reply...What i did?
1-First i download War from google Jforum2
2-Deploy it into Tomcat7 that war file
3-Start the server and create database and everything worked fine table created
4- After that i copied jar file and config folder into my project create a SSO class and made few changes SystemGlobals.properties for SSO
5- Start the server and tried to start my application my application worked fine but when i tried to access Jforum pages i got exception which i mentioned

[Ulf Dittmer]

So the problem started when you set up SSO? If so, maybe go back to the beginning when all worked beautifully, and take precise notes what you changed for the SSO integration.

By the way, do you actually need SSO? If you plan to integrate your web and JForum in a single web app anyway, maybe you don't...?

[subodh joshi]

I made following changes

auto.login.enabled = true
sso.implementation = com.ccc.forum.MyAppSSO

Here is my full file

# JForum default configuration options
#
# If you are a developer and want to specify options specific to your
# machine, like database driver and password, that should not be 
# committed to the repository, please create a file named 
# jforum-custom.conf under WEB-INF/config and put the custom
# keys and values there. 
#
# Version: $Id$

#####################
# GENERAL SETTINGS 
#####################
forum.link = http://localhost:8080/jforum
homepage.link = http://localhost:8080
forum.name = My Forum
forum.page.title = ${forum.name} - your board description
forum.page.metatag.keywords = some keywords for your board
forum.page.metatag.description = here goes the board description

# If "true", all redirect URLs will include the value of "redirect.base.url" as prefix
redirect.absolute.paths = false

# This property is only used when redirect.absolute.paths = true. You can use
# it to force a redirect prefix other than forum.link. It is specially useful
# when using proxied.context.path
redirect.base.url = ${forum.link}

# In case you're using mod_proxy or something similar, you can set this
# property to force JForum to use a specific context path.
# 
# Leave it blank if you don't need to use it.
#
# Note that if you set this property, you will also want to properly
# set "forum.link" to use the same context path.  
proxied.context.path =

# Default language to use. Can be any value
# existent at config/languages/locales.properties
i18n.board.default = en_US

# Security Hash. You should change this value just before the
# first run of your forum. The value can be anything and *should*
# very a large and complex sequence. This value will be used to 
# increase security
user.hash.sequence = 04904SDFfhfh449911-**%$nvMDFHDhskda6546546as4df4ads6f54ads654

# X-Frame-Options: https://developer.mozilla.org/en-US/docs/HTTP/X-Frame-Options
# Other possible values are DENY and ALLOW-FROM <url> (support for which is patchy)
# If left blank, the header will not be set; this is not recommended.
http.x-frame-options=SAMEORIGIN

# Page encoding
encoding = UTF-8

# Set it to "true" to require that Moderators log their actions
moderation.logging.enabled = true

# show online status
show.online.status = true

# show IP address
show.ip = true

# show avatars
show.avatar = true

#####################
# DATABASE SETTINGS
#####################
# Database type to use
database.driver.name = mysql

# Can be net.jforum.SimpleConnection, net.jforum.PooledConnection or net.jforum.DataSourceConnection
database.connection.implementation = net.jforum.PooledConnection

# Enable / Disable transactions
database.use.transactions = true

# DataSource name, in case of using net.jforum.DataSourceConnection
database.datasource.name = java:/MySqlDS

# Time in seconds to healthcheck all database connections
database.ping.delay = 3600

# Extra parameters to pass to C3P0 (only when using PooledConnection)
# Form is key=value;key2=value2;keyN=valueN
c3p0.extra.params = checkoutTimeout=120000;debugUnreturnedConnectionStackTraces=false;unreturnedConnectionTimeout=180

# ######
# Cache 
# ######
topic.cache.enabled = true
posts.cache.enabled = true
security.cache.enabled = true
topic.cache.size = 45
posts.cache.size = 100
topicsPerPage = 15
postsPerPage = 15
usersPerPage = 30
hot.topic.begin = 20
topic.recent = 50
topic.hottest = 50
top.downloads = 50

################################
# GENERAL BOARD CONFIGURATIONS
################################
# Delay (in ms) between each post from the user
# Set it to 0 (zero) to disable the config
posts.new.delay = 15000

# Whether posts can be edited after a response has been posted.
posts.edit.after.reply = true

# Google Analytics ID, looks like UA-XXXXXXX-X; leave blank if you're not using GA
google.analytics.tracker = 

# If set to "true", only moderators and admins are
# allowed to see the error stack trace when an exception
# occurs in the board. 
stacktrace.moderators.only = true

# Enable or disable registration of new users.
registration.enabled = true

dateTime.format = dd/MM/yyyy HH\:mm\:ss

# RSS date and time format. 
# If you want to include the timezone, use
#
# EEE, d MMM yyyy HH:mm:ss z
#
# However, currently, JForum does not include timezone 
# when writing messages data to the database
rss.datetime.format = EEE, d MMM yyyy HH:mm:ss

# RSS
rss.enabled = true

# Social sharing: whether to show the ShareThis button
social.enabled = false

# Proxy handling when logging in
# If set to true, the header X-Forwarded-Host will be ignored
# when building the redirect URL after a successful login. 
# Usually useful when running behind a reverse proxy
login.ignore.xforwardedhost = false

# If true, JForum will not try to redirect the browser
# session to the HTTP Referer (if any) after successfully
# logging in a user
login.ignore.referer = false

# ########
# Captcha
# ########
captcha.registration = true
captcha.posts = true
captcha.ignore.case = true

captcha.width = 250
captcha.height = 75

captcha.min.words = 4
captcha.max.words = 6

captcha.min.font.size = 25
captcha.max.font.size = 35

# Allowed HTML tags to be used when posting a message
html.tags.welcome = a, img, font, b, i, u, li, ul, br, hr, p
html.attributes.welcome = href, target, rel, src, width, height, size, face, color 

# Allow or not relative links in the messages. If set to true, 
# links starting with / are allowed, otherwise it should start
# with the values defined in the key html.links.allow.protocols
html.links.allow.relative = false

# Protocols allowed in the links posted in the messages. Only used
# if html.links.allow.relative is set to false. Any value different
# of those declared will result in an empty link. 
html.links.allow.protocols = http://, https://, mailto:, ftp://

# Max length for the username
username.max.length = 25

# Directory to store the avatar files
avatar.image.dir = images/avatar
avatar.store.dir = ${application.path}/${avatar.image.dir}/

avatar.maxHeight = 150
avatar.maxWidth = 150
avatarMaxKbSize = 25

# Allow or not the user to link to an external avatar
# To disable, set to "false"
avatar.allow.external.url = true

# #########################
# Terms Agreement / COPPA
# #########################
agreement.show = true
agreement.files.path = /templates/agreement
agreement.default.file = terms_en_US.txt

# Board statistics
statistics.ringSize = 100
statistics.active = true

# #############
# ATTACHMENTS 
# #############
# Allow or not the anonymous user to download an attachment
# To disable, set to "false"
attachments.anonymous = true

# Maximum of attachments per post
attachments.max.post = 3

# Create thumbnails for attached images
attachments.images.createthumb = true

# If the image size is less than the specified
# size, then thumbs are not created
attachments.images.thumb.maxsize.w = 400
attachments.images.thumb.maxsize.h = 400

# If "true", tell the application to display the
# regular download box for thumbnails as well. 
# If "false", then only the thumb will be shown 
# within the message, and then the user should
# click on the image to download the full version
attachments.images.thumb.box.show = true

# Icon to identify topics / posts with attachments
attachments.icon = images/icon_clip.gif

# Directory to store the files
attachments.upload.dir = upload
attachments.store.dir = ${application.path}/${attachments.upload.dir}

##################
# MAIL SETTINGS
##################
# If "true", a mail will be sent to users when a topic is
# answered. To disable, set it to "false"
mail.notify.answers = false

# SMTP config
mail.sender = [e-mail]
mail.smtp.auth = true
mail.smtp.host = localhost

# Non-SSL default port is 25. If SSL, the default por is 465.
mail.smtp.port = 25

mail.smtp.username = [e-mail]
mail.smtp.password = smtppassword

# the period in milliseconds JForum waits before sending next mail to SMTP server.
# Some SMTP server will response 421 if you send a lot of mails in a very short time. 
# set it to 0 (zero) to disable it completely
mail.smtp.delay = 2000

# SSL support for SMTP. Set it to "true" if your
# host requires that (GMail does). Don't forget
# to change the mail.smtp.port too
mail.smtp.ssl = false

# If true, allow users to interact to the forum using any
# email client, by just sending a message to a specific address
mail.pop3.integration.enabled = false

# If "false", deletes all messages retrieved from a POP3
# connection. If "true", keeps them in the server
mail.pop3.debug.keep.messages = true

# If set to true, the POP3 TOP command will not be used to fetch message headers. 
# This is useful for POP3 servers that don't properly implement the TOP command, 
# or that provide incorrect information in the TOP command results.
mail.pop3.disabletop = true

# If the mail.smtp.host cannot be resolved, JavaMail sends a HELO 
# without a hostname - which is a violation of the SMTP protocol
# You can set this property to force the hostname
mail.smtp.localhost = 

# If "true", requires all new users to validate their email
# addresses in order to be accepted in the system
mail.user.email.auth = false

# Can be "text" or "html"
mail.messageFormat = html

mail.charset = UTF-8
mail.template.encoding = UTF-8

mail.lostPassword.messageFile = mail/${i18n.board.default}/lostPassword.txt
mail.lostPassword.subject = [${forum.name}] Password recovery

mail.newAnswer.messageFile = mail/${i18n.board.default}/mailNewReply.txt
mail.newAnswer.subject = [${forum.name}] Message posted: {0}

mail.newPm.subject = [${forum.name}] Private Message
mail.newPm.messageFile = mail/${i18n.board.default}/newPrivateMessage.txt

mail.newTopic.messageFile = mail/${i18n.board.default}/mailNewTopic.txt
mail.newTopic.subject = [${forum.name}] New Topic: {0}

mail.activationKey.subject = [${forum.name}] Activate forum account
mail.activationKey.messageFile = mail/${i18n.board.default}/activateAccount.txt

mail.summary.weekly.messageFile = mail/${i18n.board.default}/summaryMessage.txt
mail.summary.weekly.subject = [${forum.name}] Weekly Summary

# ##############
# Helper Stuff
# ##############
extension.field = extension

# ##################
# Banning of users
# ##################
# Set it to "true" to send "403 Forbidden" header instead of
# displaying a nice error message to the user, in case of banning
banlist.send.403forbidden = false

# ########
# SEARCH
# ########
search.indexing.enabled = true
search.indexer.default = net.jforum.search.LuceneManager
search.indexer.implementation = ${search.indexer.default}

#lucene.analyzer.default = org.apache.lucene.analysis.standard.StandardAnalyzer
lucene.analyzer.default = net.jforum.search.PorterStandardAnalyzer
lucene.analyzer.chinese = org.apache.lucene.analysis.cjk.CJKAnalyzer
lucene.analyzer = ${lucene.analyzer.default}

# Full path to where the index should be written. It must be writable by the
# user who's running the web server
lucene.index.write.path = ${resource.dir}/jforumLuceneIndex

# Used for re-indexation. It is the number of documents
# to keep in memory before flushing them to the disk
# Please keep in mind that a higher number means a higher memory usage
lucene.indexer.ram.numdocs = 10000

# Number of posts to retrieve on each read from the database
# Please keep in mind that a higher number means a higher memory usage
lucene.indexer.db.fetch.count = 50

# whether or not to index (and thus find during a search) attachments
lucene.index.attachments = true

# Max number of posts in the search result
# Please keep in mind that a higher number means a higher memory usage
search.result.limit = 50000

# #######
# KARMA
# #######
karma.show = true
karma.min.points = 1
karma.max.points = 5

#############################
# SSO / User authentication
#############################
# Authentication type: use one of the following options
#
# sso: SSO based authentication. The called class will be the one
#	specified by the key "sso.implementation", which must be an implementation
# 	of net.jforum.sso.SSO
#
# default: Non-SSO authentication, which relies on the key 
#	"login.authenticator" to validate users. For more information, please see
#	net.jforum.sso.LoginAuthenticator and the default implementation.
authentication.type = sso

# The above key will be used when "authentication.type" is set to "default"
# Can be any implementation of net.jforum.sso.LoginAuthenticator
#
# For LDAP authentication, set the value to net.jforum.sso.LDAPAuthenticator. Also,
# see the LDAP section below
login.authenticator = net.jforum.sso.DefaultLoginAuthenticator

# When using authentication.type = default, you may choose to disable
# the automatic login feature, which will prevents users to get 
# automatic logged in when they come back to the forum
auto.login.enabled = true

# The above key will be be used then "authentication.type" is set to "sso"
# The default implementation (used here) only checks if request.getRemoteUser()
# is not null. This may be enough for many situations.
sso.implementation = com.ccc.forum.MyAppSSO

# Special attributes used when creating a new user
# Only if auhentication.type = sso
# The attribute name to search in the session for the password.
sso.password.attribute = password

# Same as above
sso.email.attribute = email

# The default email to use if sso.email.attribute is empty
sso.default.email = sso@user

# The default password to use if sso.password.attribute is empty
sso.default.password = sso 

# Optional redirect for SSO
#
# If a value is set, the user will be redirected to the defined
# URL, using the following logic:
#
# ${sso.redirect}?returnUrl=${forum.link} + <the original JForum URL>
#
# The value MUST start with the protocol (http:// or https://)
#
sso.redirect = 

# #######
# LDAP 
# #######
# Security protocol to use, e.g: "ssl"
# Leave it empty (default) to let the provider figure it out
ldap.security.protocol =

# Security authentication to use. Possible values: "none", "simple", "strong", 
# "EXTERNAL" (SASL). Leave empty (default) to let the provider figure it out
ldap.authentication = 

# Class that provides a LDAP factory
ldap.factory = com.sun.jndi.ldap.LdapCtxFactory

# The prefix your LDAP server requires. e.g 'uid='
# The username supplied gets inserted just after the prefix,
#  e.g: 'uid=username' so adjust the prefix properly
ldap.login.prefix = uid=

# The suffix your LDAP server requires.
# e.g 'ou=Users,dc=department,dc=company,dc=com'
ldap.login.suffix = ou=Users,dc=department,dc=company,dc=com

# The url of your LDAP server.
# Notice that if your LDAP server uses SSL you will need to configure your
# server certificate so that Java Secure Sockets Extension (JSSE) will accept it.
# Read http://docs.oracle.com/javase/jndi/tutorial/ldap/security/ssl.html
ldap.server.url = ldap://localhost

# Field that holds the user's email
ldap.field.email = mail

# ActiveDirectory
# To configure LDAPAuthenticator integrating with Microsoft Active Directory. The following two keys should be necessary.
# They are similar to ldap.login.prefix and ldap.login.suffix , but it's used when looking up user infomation 
# rather than authentication. It's used when the login Distinguished Name (DN) is formatted differently from the lookup 
# DN on some LDAP servers, for example, Microsoft Active Directory. If it's the case, you should add these keys in additional 
# to ldap.login.prefix and ldap.login.suffix .
#
# The following example is for configuring on Microsoft Active Directory:
# ===========================
# ldap.login.prefix=CN=
# ldap.login.suffix=CN=Users,DC=jform,DC=net
# ldap.lookup.suffix=CN=Users
# =========================== 
ldap.lookup.prefix = 
ldap.lookup.suffix = 

###############################
# INTERNAL CONFIGURATION STUFF  
###############################
i18n.internal = en_US

database.driver.config = ${config.dir}/database/${database.driver.name}/${database.driver.name}.properties
sql.queries.driver = ${config.dir}/database/${database.driver.name}/${database.driver.name}.sql
sql.queries.generic = ${config.dir}/database/generic/generic_queries.sql
database.support.subqueries = false

# ${application.path}, ${installation}, and ${servlet.name} are set by the web application
resource.dir = ${application.path}/WEB-INF
config.dir = ${resource.dir}/config
installation.config = ${config.dir}/jforum-custom.conf

# Only change these values if you know what you're doing
anonymous.userId = 1
defaultUserGroup = 1

cache.engine.default = net.jforum.cache.DefaultCacheEngine
cache.engine.jboss = net.jforum.cache.JBossCacheEngine
cache.engine.ehcache = net.jforum.cache.EhCacheEngine
jboss.cache.properties = ${config.dir}/jboss-cache-cluster.xml
ehcache.cache.properties = ${config.dir}/ehcache.xml

cache.engine.implementation = ${cache.engine.default}

cacheable.objects = net.jforum.repository.BBCodeRepository, \
	net.jforum.repository.RankingRepository, \
	net.jforum.repository.SmiliesRepository, \
	net.jforum.repository.ForumRepository, \
	net.jforum.repository.TopicRepository, \
	net.jforum.SessionFacade, \
	net.jforum.repository.PostRepository, \
	net.jforum.repository.Tpl, \
	net.jforum.repository.RolesRepository, \
	net.jforum.repository.SecurityRepository, \
	net.jforum.repository.BanlistRepository

# The template to use
template.dir = default

# If you change this value, is necessary to edit WEB-INF/web.xml as well
servlet.extension = .page

###########
# COOKIES
###########
cookie.name.data = jforumUserId
cookie.name.user = jforumUserInfo
cookie.name.autologin = jforumAutoLogin
cookie.name.userHash = jforumUserHash

##################
# OTHER SETTINGS
##################
tmp.dir = tmp
cache.dir = cache

templates.mapping = ${config.dir}/templatesMapping.properties
locales.dir = ${config.dir}/languages/
locales.names = locales.properties

smilie.image.dir = images/smilies
smilie.image.pattern = <img    />

background.tasks = true

clickstream.config = ${config.dir}/clickstream-jforum.xml
quartz.config = ${config.dir}/quartz-jforum.properties

# whether the post contents on the user posts page are always visible,
# or whether they're initially invisible, and displayed after a mouse click
user.posts.toggle = false

# Default charset used by the servlet container. 
#
# **It's unlikely** you will have to change this value, 
# even if you're using a Cyrillic alphabet.
#
# For detailed information, please see
# http://www.jforum.net/confluence/display/configuration/charEncodingContainer
#
default.container.encoding = ISO-8859-1

# the period in milliseconds the config files are watched for changes
# set it to 0 (zero) to disable it completely
file.changes.delay = 2000

# If you have freemarker templates residing outside of the JForum webapp
# you can add the path to the directory containing them here. 
# Add the full path to the directory. 
freemarker.extra.template.path =

##########
# Summary
##########
summary.enabled = false
summary.days.before = 7

###################
# Stop Forum Spam
###################
stopForumSpam.api.enabled = true
stopForumSpam.api.url = http://www.stopforumspam.com/api?

# System version
version = 2.3.5
jforum.version.url = http://www.andowson.com/latest_version.txt

Do you think this change causing issue?

And I need SSo because i want user login in my application and access forum from there

[Ulf Dittmer]

No idea, I've never used SSO in JForum. The error message doesn't really sound like the problem has to do with SSO, though, but rather with the caching system. But maybe there's a connection.

And I need SSo because i want user login in my application and access forum from there

I see. When you were talking about "integrating Jforum with my project" I assumed you meant both would be part of the same web app - in which case you don't need SSO.

[subodh joshi]

Yes Forum is a part of my web application as i copied all things but how should be user will able to login or able to use same session of my application, in forum if we will not implement SSO?

[Ulf Dittmer]

SSO is specifically for logging in once while accessing multiple servers (or multiple web apps on the same server). If there is only a single web app SSO is pointless, because there will only be a single session anyway (which you need to adapt so that it works for both web apps, but that should be easy).

[subodh joshi]

Ok but If you will check my First post of this thread you can see i added a link from which i made changes in my webapplication that link mentioned SSO implementation even when we are using Jforum in our own application.

Second thing i removed SSO as well but still i am end up with same Exception.

[Ulf Dittmer]

You would have to ask the author of that article why he implemented SSO.

The easiest is probably to start from scratch with a clean installation.

[subodh joshi]

Do you have better link where someone used jforum with his on project if so please tell me i will want to use it One thing i want to mentioned here my application database and Jforum database is different i mean instance are different

[Ulf Dittmer]

JForum is a Java web app, and so can be altered and extended like any other web app. What are you struggling with, specifically?

Using several DBs from within the same web app is no problem.

[subodh joshi]

Only issue Why it is throwing Cache exception i am not able to figure out that .

[Ulf Dittmer]

So this approach to getting a cleanly running installation no longer works ?

1-First i download War from google Jforum2
2-Deploy it into Tomcat7 that war file
3-Start the server and create database and everything worked fine table created

[subodh joshi]

Upto this everything worked now i add all jar in my maven project and copied config folder inside /WEB-INF folder and copied templates folder inside webapps directory and started sever also made changes in web.xml file ...My project started but when i tried to access Jforum pages i am getting cache exception

[Jaikiran Pai]

Looking at the exception stacktrace, this should be pretty straightforward to debug:

SEVERE: Allocate exception for servlet jforum
java.lang.NullPointerException
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:188)
at net.jforum.ConfigLoader.startCacheEngine(ConfigLoader.java:233)

My guess is that whatever class name is being passed is null. Now if you look at the code in ConfigLoader.startCacheEngine, you'll notice that it uses cache.engine.implementation property value to pass it to the Class.forName method. You'll have to figure out why that is being sent as null.

[subodh joshi]

But i do not have source code i am using Jforum.jar in my project so debug is not possible as per my knowledge

[Ulf Dittmer]

The source code is at https://code.google.com/p/jforum2/source/checkout.

[subodh joshi]

Thanks so now i have to copy paste all java code into my project to test the code?

[Ulf Dittmer]

If you're familiar with the debugger built into your IDE, you can point it directly at the source code. If you're not using the debugger, you can add some logging to that code section -before the exception gets thrown!- that tells crucial information (values of variables etc.). Then you'd build a new JForum jar file and use that instead of the one that came with the JForum download.

[subodh joshi]

Could you help me how here i found the issue

public static void startCacheEngine()
    {
        try {
            final String cacheImpl = SystemGlobals.getValue(ConfigKeys.CACHE_IMPLEMENTATION);
            LOGGER.info("Using cache engine: " + cacheImpl);

            cache = (CacheEngine)Class.forName(cacheImpl).newInstance();
            cache.init();

You can see this code reading properties file when i dig more i go this method

  public String getVariableValue(String field)
    {
        String preExpansion = globals.installation.getProperty(field);

        if (preExpansion == null) {
            preExpansion = this.defaults.getProperty(field);

            if (preExpansion == null) {
                LOGGER.info("Key '" + field + "' is not found in " + globals.defaultConfig + " and " + globals.installationConfig);
                return null;
            }
        }

Now here preExpansion is coming null so everything comes null so its throw NullPointerException

Can you tell me why it is Null? Look like properties file not able to load Why i do not know

[Ulf Dittmer]

Which key is not found? Is that present in the properties file?

[subodh joshi]

It look like its not able to properties file

[Ulf Dittmer]

Did you move it, or change file permissions? If you deploy the war file then it should be exactly where it needs to be (in WEB-INF/config, along with all the other configuration files).

[subodh joshi]

Yes it is there but look like SystemGlobals not initialize any idea when this class would be internalize i mean at server statup or somewhere else ..I am sure issue is coming with this class its not initialized so properties file not loaded and i am getting NullPointer issue

[subodh joshi]

I put the debug point on this code

    public static void startSystemglobals(final String appPath)
    {
        SystemGlobals.initGlobals(appPath, appPath + "/WEB-INF/config/SystemGlobals.properties");
    }

But this method not called if this will not load it will not able to load properties file and we will end with NullPointerException But i dont know when and how it will call by Jforum

[Ulf Dittmer]

The file is loaded from ConfigLoader.startSystemglobals - make sure that (and the methods in SystemGlobals it calls) are working correctly.

[subodh joshi]

Do not know but this method never called as i put break point but its not called

[Ulf Dittmer]

Is the context listener defined properly (it in turn calls ConfigLoader.startSystemglobals)? Does it run? You should see some output of it in the logs.

[subodh joshi]

Yes it define right in web.xml and when i tried this Url
http://localhost:8080/3c/forums/list.page

And it called

   @Override
    public void init(final ServletConfig config) throws ServletException
    {
        super.init(config);
        this.startApplication();

and this called super init method

	public void init(final ServletConfig config) throws ServletException
	{
		super.init(config);
		
		try {
			debug = "true".equals(config.getInitParameter("development"));
			LOGGER.info("Starting JForum. Debug mode is " + debug);
			
			ConfigLoader.startCacheEngine();
}

Now when this line called

ConfigLoader.startCacheEngine();

It throw exception becuse properties not loaded

[Ulf Dittmer]

Does that mean that you do see the output of the context listener in the log files?

[subodh joshi]

I got this

127.0.0.1 - - [17/Jul/2014:17:43:56 +0530] "GET /3c/javax.faces.resource/images/ui-bg_highlight-soft_100_deedf7_1x100.png.xhtml?ln=primefaces-cupertino HTTP/1.1" 200 104
127.0.0.1 - - [17/Jul/2014:17:43:56 +0530] "GET /3c/javax.faces.resource/images/ui-bg_highlight-hard_100_f2f5f7_1x100.png.xhtml?ln=primefaces-cupertino HTTP/1.1" 200 103
127.0.0.1 - - [17/Jul/2014:17:44:27 +0530] "GET /3c/forums/list.page HTTP/1.1" 404 5
127.0.0.1 - - [17/Jul/2014:17:45:55 +0530] "GET /3c/forums/list.page HTTP/1.1" 404 5
127.0.0.1 - - [17/Jul/2014:18:02:23 +0530] "GET /3c/forums/list.page HTTP/1.1" 404 5

In this folder

C:\newSVN_Workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\logs

We will get some other log file as well i did not get any other log file my project generates

[Ulf Dittmer]

That's the access log, not the application log. If you're using Tomcat, check Catalina.out.

Also, those are not JForum URLs, so I'm not sure what you're looking at.

[subodh joshi]

Here is log output

Jul 18, 2014 11:04:54 AM org.apache.catalina.core.AprLifecycleListener init
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Java\jdk1.7.0_15\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:/Program Files/Java/jdk1.7.0_15/bin/../jre/bin/server;C:/Program Files/Java/jdk1.7.0_15/bin/../jre/bin;C:/Program Files/Java/jdk1.7.0_15/bin/../jre/lib/amd64;C:\app\sjoshi\product\11.2.0\client_1\bin;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\WIDCOMM\Bluetooth Software\;C:\Program Files\WIDCOMM\Bluetooth Software\syswow64;C:\Program Files (x86)\Gnostice\PDFOne.NET\Bin;C:\Program Files (x86)\Gnostice\PDFOne.NET\Bin;C:\PROGRA~2\COMMON~1\LEADTO~1\Help;C:\LEADTO~1.5\Bin\CDLL\Win32;C:\LEADTO~1.5\Bin\CDLL\x64;C:\LEADTO~1.5\Bin\Dotnet\Win32;C:\LEADTO~1.5\Bin\Dotnet\x64;c:\Program Files (x86)\Microsoft ASP.NET\ASP.NET Web Pages\v1.0\;c:\Program Files (x86)\Microsoft SQL Server\100\Tools\Binn\;c:\Program Files\Microsoft SQL Server\100\Tools\Binn\;c:\Program Files\Microsoft SQL Server\100\DTS\Binn\;C:\CSDC\PB903dll;C:\php;C:\Program Files\doxygen\bin;C:\Program Files\Java\jdk1.7.0_15\bin;C:\Primefaces\maven\apache-maven-3.0.4\bin;C:\Java\apache-ant-1.7.1\bin;C:\Program Files (x86)\Microsoft SQL Server\100\Tools\Binn\VSShell\Common7\IDE\;C:\Program Files (x86)\Microsoft SQL Server\100\DTS\Binn\;C:\Program Files (x86)\Microsoft Visual Studio 9.0\Common7\IDE\PrivateAssemblies\;C:\Program Files (x86)\Groovy\Groovy-2.1.3\bin;C:\Program Files\TortoiseHg\;C:\Program Files (x86)\MySQL\MySQL Utilities 1.3.5\;C:\Program Files\TortoiseSVN\bin;C:\Java\eclipse-4.3\eclipse;;.
Jul 18, 2014 11:04:54 AM org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.j2ee.server:3c' did not find a matching property.
Jul 18, 2014 11:04:54 AM org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context/Realm} Setting property 'debug' to '99' did not find a matching property.
Jul 18, 2014 11:04:54 AM org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context/Realm} Setting property 'localDataSource' to 'true' did not find a matching property.
Jul 18, 2014 11:04:54 AM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["http-bio-8080"]
Jul 18, 2014 11:04:54 AM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["ajp-bio-8009"]
Jul 18, 2014 11:04:54 AM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 1089 ms
Jul 18, 2014 11:04:54 AM org.apache.catalina.core.StandardService startInternal
INFO: Starting service Catalina
Jul 18, 2014 11:04:54 AM org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet Engine: Apache Tomcat/7.0.29
Jul 18, 2014 11:05:00 AM org.apache.catalina.loader.WebappClassLoader validateJarFile
INFO: validateJarFile(C:\newSVN_Workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\3c\WEB-INF\lib\el-api-2.2.jar) - jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/el/Expression.class
Jul 18, 2014 11:05:00 AM org.apache.catalina.loader.WebappClassLoader validateJarFile
INFO: validateJarFile(C:\newSVN_Workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\3c\WEB-INF\lib\servlet-api-2.3.jar) - jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/Servlet.class
Jul 18, 2014 11:05:34 AM org.apache.catalina.startup.ContextConfig validateSecurityRoles
INFO: WARNING: Security role name Admin used in an <auth-constraint> without being defined in a <security-role>
Jul 18, 2014 11:05:34 AM org.apache.catalina.core.ApplicationContext log
INFO: No Spring WebApplicationInitializer types detected on classpath
Jul 18, 2014 11:05:34 AM org.apache.catalina.core.ApplicationContext log
INFO: Initializing Spring root WebApplicationContext
log4j:WARN No appenders could be found for logger (org.springframework.web.context.ContextLoader).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
Hibernate: SELECT max(umul_user_id) as umul_user_id FROM um_users_list
Hibernate: SELECT max(gto_id) as gto_id From group_tweet_order
Hibernate: SELECT max(gd_id) as gd_id From group_distribution
Hibernate: SELECT max(group_id) as group_id From groups
Jul 18, 2014 11:05:45 AM com.sun.faces.config.ConfigureListener contextInitialized
INFO: Initializing Mojarra 2.1.11 ( 20120711-1632) for context '/3c'
Jul 18, 2014 11:05:49 AM com.sun.faces.spi.InjectionProviderFactory createInstance
INFO: JSF1048: PostConstruct/PreDestroy annotations present. ManagedBeans methods marked with these annotations will have said annotations processed.
Jul 18, 2014 11:05:52 AM org.primefaces.webapp.PostConstructApplicationEventListener processEvent
INFO: Running on PrimeFaces 5.0
Jul 18, 2014 11:05:52 AM org.primefaces.extensions.application.PostConstructApplicationEventListener processEvent
INFO: Running on PrimeFaces Extensions 2.0.0
Jul 18, 2014 11:05:52 AM org.omnifaces.VersionLoggerEventListener processEvent
INFO: Using OmniFaces version 1.8.1-20140603
Jul 18, 2014 11:05:52 AM com.sun.faces.config.ConfigureListener$WebConfigResourceMonitor$Monitor <init>
INFO: Monitoring jndi:/localhost/3c/WEB-INF/faces-config.xml for modifications
Jul 18, 2014 11:05:53 AM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-bio-8080"]
Jul 18, 2014 11:05:53 AM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["ajp-bio-8009"]
Jul 18, 2014 11:05:53 AM org.apache.catalina.startup.Catalina start
INFO: Server startup in 58881 ms
Jul 18, 2014 11:05:57 AM com.sun.faces.context.SessionMap put
WARNING: JSF1063: WARNING! Setting non-serializable attribute value into HttpSession (key: loginBean, value class: com.ccc.web.view.LoginBean).
Jul 18, 2014 11:05:58 AM com.sun.faces.application.resource.ResourceHandlerImpl logMissingResource
WARNING: JSF1064: Unable to find or serve resource, images/main_bg.jpg.
Jul 18, 2014 11:05:58 AM com.sun.faces.application.resource.ResourceHandlerImpl logMissingResource
WARNING: JSF1064: Unable to find or serve resource, images/AK1.png.
Jul 18, 2014 11:05:58 AM com.sun.faces.application.resource.ResourceHandlerImpl logMissingResource
WARNING: JSF1064: Unable to find or serve resource, images/nav.jpg.
Jul 18, 2014 11:05:58 AM com.sun.faces.application.resource.ResourceHandlerImpl logMissingResource
WARNING: JSF1064: Unable to find or serve resource, images/search.jpg.
Jul 18, 2014 11:05:58 AM com.sun.faces.application.resource.ResourceHandlerImpl logMissingResource
WARNING: JSF1064: Unable to find or serve resource, images/search_button.jpg.
Jul 18, 2014 11:05:58 AM com.sun.faces.application.resource.ResourceHandlerImpl logMissingResource
WARNING: JSF1064: Unable to find or serve resource, images/lock.jpg.
Jul 18, 2014 11:05:58 AM com.sun.faces.application.resource.ResourceHandlerImpl logMissingResource
WARNING: JSF1064: Unable to find or serve resource, images/banner.jpg.
Jul 18, 2014 11:05:58 AM com.sun.faces.application.resource.ResourceHandlerImpl logMissingResource
WARNING: JSF1064: Unable to find or serve resource, images/footer_bg.jpg.

Will it helpful?

[Ulf Dittmer]

I don't see any indication that there is an instance of JForum starting up; is its output in some other log file, maybe? Check the "logs" directory of your Tomcat installation.

[subodh joshi]

Hi i tried this

I'm not sure if you were after catalina.out or one of the other logs produced by Tomcat. But, if you're after the catalina.out log file then follow the directions below:

In the servers tab, double-click on the Tomcat Server. You will get a screen called Overview. Click on "Open launch configuration". Click on the "Common" tab. Towards the bottom of the screen you can check the "File" checkbox and then specify a file that can be used to log your console (catalina.out) output. Finally, restart the Tomcat server.

I tried this Link to get log from Eclipse

[Ulf Dittmer]

Unfortunately, I have no idea how the Eclipse/Tomcat integration works, but I do know that many people struggle to get it to work (which is why I recommend to use a standalone Tomcat instead).

JForum2 is set up to log into a file called "jforum.log", which in a standalone Tomcat would be in the "logs" directory.

[subodh joshi]

Hmm let me try to get out something else so i can give you whole log ..For the same time if i will deploy Jforum in tomcat where my application is already deployed How would it will work from login session of my application ?i mean to say if i login in my application with some userid and password same session will work for Jforum as well?