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Not able to find Spring "classpath:" location

I have a Spring Project where I am using bean configuration file
beans.xml.Inside the bean Configuration file, i have defined some properties for a PlaceHolder which refers to classPath...While the application is running, the properties are getting loaded from /unknownPath/Dev/Loc1/System.properties
Where
${BUS_ENV}=Dev
${LOCATION1}=Loc1
<bean id="placeholderProperties" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:${BUS_ENV}/${LOCATION1}/system.properties</value>
<value>classpath:${BUS_ENV}/lbsprocessor.properties</value>
</list>
</property>
<!-- Force system properties to override any deployed runtime properties -->
<property name="systemPropertiesModeName" value="SYSTEM_PROPERTIES_MODE_OVERRIDE"/>
<property name="ignoreUnresolvablePlaceholders" value="true" />
</bean>
I didn't specify classpath while running my project in IDE
I don't have those files in my resource folder
There are around 65 such files exists(for various reasons) as Dev/Loc1/System.properties
I am not able to find from which location the properties are getting referred. Even after debugging, I couldn't find out what classpath refers to. Please help me with figuring out

If you are using eclipse IDE right click on your project select properties then select Java Build Path. On first tab Source there is one input named Default Output folder that value is your classpath. Check all your properties files are there in that path.

Referring to your point 2 problems might be in these line
<value>classpath:${BUS_ENV}/${LOCATION1}/system.properties</value>
<value>classpath:${BUS_ENV}/lbsprocessor.properties</value>
You are using classpath for file location which means these properties file have to be in the .war file at /Dev/Loc1/System.properties
If properties files are outside of project may be at system level you can access them like this
<value>file:${BUS_ENV}/${LOCATION1}/system.properties</value>
<value>file:${BUS_ENV}/lbsprocessor.properties</value>
eg:
<value>file:/home/testuser/system.properties</value>

I am using Mac OS ,in this we are storing the Configurations as a jar file under
/Library/Java/Extension.So java is directly referring classpath to that location by default.

ehcache configuration file outside of classpath

I need to be able to read an ehcache configuration file ( ehcache.xml) from outside the classpath to be able to have differents files by environment (to be able for example to change the multicast adress for cache sharing).
Before I was simply using an XML defined bean :
<bean id="ehCache" class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean">
<property name="configLocation" value="#{
#PreferenceService.getEhcacheFileName() }" />
</bean>
PreferenceService.getEhcacheFileName() send back a path in a properties file.
if the propertie is filled with a classpath path (classpath:ehcache.xml), the application work properly.
But if I want to use an absolute path (/home/foo/ehcache.xml) the resource is not found.
Is it possible to use an absolute path ? And if yes what properties do I need to use ?

configLocation can contain an absolute path without any trouble.
I just forgot to add the file: in front of the path in my properties file.
So my path is now : "file:/foo/foo/ehcache.xml"

How to externalize properties file for web application(war)?

I have developed a webapplication which is having jsp and java code. Right now I have placed all the key-value into a env/lifecycle specific properties file (like conf-dev.properties,conf-stg.properties,conf-prod.properties).
I want to externalize these properties file so that it can be placed outside of war(without effecting the war).
right now war file is tightly coupled with properties file. if i have to modify any thing i have to build and make war and deploy.
I have very limited access on deployment server machine (only have access for one folder where i can put my configuration files) & deployment process is handled by CI(jenkin & automated script).
I explored on internet and came to know that we can achieve this using spring, would like to know what is the best way to achieve this?

As you are using Spring I suppose you already use PropertyPlaceholderConfigurer. If not you should ;)
The location of a property file can be anything that can be resolved as spring Resource. This includes classpath, servletcontext and also file references as URIs (file:///... For absolute paths)
https://docs.spring.io/spring/docs/current/javadoc-api/org/springframework/beans/factory/config/PropertyPlaceholderConfigurer.html
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="${config.file.location}" />
</bean>

If I understand your question, then you can use Class.getResourceAsStream(String) the linked Javadoc says (in part)
This method delegates to this object's class loader. If this object was loaded by the bootstrap class loader, the method delegates to ClassLoader.getSystemResourceAsStream(java.lang.String).

The better way to externalize env specific properties is to use "user.home" or "user.dir".

Thanks #Martin F..
Resolved:This is the final one i used and its working fine in dev,stage Env.
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="ignoreUnresolvablePlaceholders" value="false"/>
<property name="order" value="1"/>
<property name="locations">
<list>
<value>classpath:conf-${cisco.life}.properties</value>
<value>file:///${openshift.home}/data/conf-${cisco.life}.properties</value>
<value>file:${openshift.home}/data/conf-${cisco.life}.properties</value>
</list>
</property>
</bean>.
and i used script action hook in openshift to set the lifecycle on system level.
appname=echo $OPENSHIFT_APP_NAME
case "$appname" in
*dev)export JAVA_OPTS_EXT="${JAVA_OPTS_EXT} -Dcisco.life=dev";
echo "setting up env life dev for " $appname
;;
*stage)export JAVA_OPTS_EXT="${JAVA_OPTS_EXT} -Dcisco.life=stg;
echo "setting up env life as stg for " $appname.

How to load a file as a context parameter value in a Tomcat/Java/Spring application?

I'm using my context.xml file to set init parameters for my java application, for example:
<Parameter
name="Environment"
description="The environment in which this code is running (e.g. Production, Staging, Development)."
value="Production"/>
I would like to be able to create a parameter who's value attribute is loading from a file. Is there anyway to do this? Should I be using a < Resource > element instead? If so, how do I setup a resource to load the contents of a file? I've tried Google, but I my not understand the context.xml file well enough to know what to look for. Any help is much appreciated!

In application-context.xml add this element
<context:property-placeholder ignore-unresolvable="true" location="classpath*:application.properties"/>
In the file application.properties you can define parameters like this
userName=root
password=123
And then you can use the parameters by this way
<property name="username" value="${userName}"/>
<property name="password" value="${password}"/>

log4j log file relative path, CONSOLE APPLICATION(jar)

I'm using Spring in a Console java application. I'm using PropertyPlaceholderConfigurer to load database details, and it works flawlessly:
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="file:/appdata/configs/myapplication/connection.properties" />
</bean>
So the root dir will be relative to where the jar is located. I need the same functionality with log4j.properties
log4j.appender.file.File=/appdata/configs/myapplication/myapplication-log.log
How can I achieve this without defining environment variables?

Just tried it like this:
log4j.appender.file.File=\\appdata\\configs\\myapplication\\myapplication-log.log
And it works fine.