I am working on Spring MVC 3.x. Can we use properties files contents in HTML/JavaScript file?
I have a properties file at the classpath named webMessages.properties.
And Spring -servlet.xml has
<context:property-placeholder location="classpath:/jdbc.properties,classpath:/webMessages.properties" />
When I try to access the properties in the JavaScript file, it is not giving any output:
<p>"${topPath.topHeading}"</p>
Kindly advise, if this is possible?
I am not sure if context:property-placeholder will expose properties outside the definitions. But I was able to get it by the following way:
<bean id="propertyPlaceHolderConfigurer" class="org.springframework.beans.factory.config.PropertiesFactoryBean">
<property name="locations">
<list>
<value>classpath:/jdbc.properties</value>
<value>classpath:/webMessages.properties</value>
</list>
</property>
</bean>
<context:property-placeholder
properties-ref="propertyPlaceHolderConfigurer"
ignore-resource-not-found="true"/>
In your jsp:
Include this tag:
<%# taglib prefix="spring" uri="http://www.springframework.org/tags" %>
and then access the property as:
<spring:eval expression="#propertyPlaceHolderConfigurer.getProperty('topPath.topHeading')" />
What you are trying to do is possible, but the file needs to be a JSP. Inside the JSP try the following:
${properties['topPath.topHeading']}
Related
I am loading property file in spring-context.xml and i am giving
external property file location in
${spring.profiles.active}.properties which is in classpath and using the location as a placholder in spring-context.xml. My spring-context.xml is:
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="ignoreResourceNotFound" value="true" />
<property name="ignoreUnresolvablePlaceholders" value="true" />
<property name="searchSystemEnvironment" value="true" />
<property name="systemPropertiesModeName" value="SYSTEM_PROPERTIES_MODE_OVERRIDE" />
<property name="locations" ref="propertyConfigurerFiles" />
</bean>
<bean id="propertyConfigurerFiles" class="java.util.ArrayList">
<constructor-arg>
<list>
<value>/WEB-INF/properties/common.properties</value>
<!--In Developemnet Enviroenment it will be dev.properties-->
<value>/WEB-INF/properties/${spring.profiles.active}.properties</value>
<!--External Property File Location as a Placeholder-->
<value>${app.config.batch.location}</value>
</list>
</constructor-arg>
</bean>
And my dev.properties is:
app.config.batch.location=E:/project/properties/config.properties
My problem is that is ${app.config.batch.location} placeholder is not
resolved in spring-context.xml and its trying to load file
${app.config.batch.location} in place of
E:/project/properties/config.properties.
I hope I explained the problem well. Please help!
Thanks in Advance!!!
You need to create bean of class PropertyPlaceHolderConfigurer.
Not just some ArrayList bean. Why do you think you need this ArrayList bean?
It seems you are using spring profiles, instead of messing with initialization time property value binding what you can do is ...
1) read the property file(profile's)
/WEB-INF/properties/${spring.profiles.active}.properties
2) create a java class that can read these property values. (don't forget to use spring profiles interfacing class)
3) as you are trying to read a property file whose location is embedded in property file(step-1), object created at step-2 will give value for key <value>${app.config.batch.location}</value>
now you can load this property file using available file reader class.
4) create Properties object and access the values in it.
Note:: if any of your bean initialization depends on key-value read at step-4, do initialization manually or create your ***custom class(servlet) that get loaded before any other class (even spring's DispactherServlet).
I have configured a config.xml file choosing the appropriate properties file depending on environment. I am running this as a Spring Boot app with Apache Camel.
The config looks like this.
<bean id="properties"
class="org.apache.camel.component.properties.PropertiesComponent">
<property name="locations" ref="locations" />
</bean>
<bean id="bridgePropertyPlaceholder"
class="org.apache.camel.spring.spi.BridgePropertyPlaceholderConfigurer">
<property name="locations" ref="locations" />
<property name="ignoreUnresolvablePlaceholders" value="true" />
</bean>
<beans profile="dev">
<util:list id="locations">
<value>classpath:config/users.properties</value>
<value>classpath:config/application.properties</value>
<value>classpath:config/application-dev.properties</value>
</util:list>
<beans profile="test">
<util:list id="locations">
<value>file:${project.dir}/config/users.properties</value>
<value>file:${project.dir}/config/application.properties</value>
</util:list>
When using the test profile I want to use the external files defined in the config (because I dont want to commit username/password to repo). That seems to work okay.
However, my users.properties file contains:
username=myusername
password=mypassword
and my application.properties contains:
loginParameters=username=${username}&password=${password}
when running java -jar myjar.jar --spring.profiles.active=test I encounter:
java.lang.IllegalArgumentException: Could not resolve placeholder 'username' in string value '${username}&password=${password}'
It clearly loads the properties files because it states:
Loading properties file from URL: file:...../users.properties
Loading properties file from URL: file:...../application.properties
Bridging Camel and Spring property placeholder configurer with id: bridgePropertyPlaceholder
...
And then the exception occurs. How can I resolve the issue where the application.properties file doesn't recognize my properties defined in users.properties? Everything works okay when running the dev-profile.
in your application properties, use $simple{username} and $simple{password} to tell Camel to put the values there.
I am trying to use freemarker template using spring, my spring config is give below,
<bean id="freemarkerConf" class="org.springframework.ui.freemarker.FreeMarkerConfigurationFactoryBean" >
<!-- Turn this off to always load via SpringTemplateLoader -->
<property name="preferFileSystemAccess" value="false"></property>
<property name="templateLoaderPath" value="classpath:/WEB-INF/freemarker/alertmail/"></property>
</bean>
but for some reason I keep getting the following exception,
java.io.FileNotFoundException: Template mainMail.ftl not found.
at freemarker.template.Configuration.getTemplate(Configuration.java:489)
at freemarker.template.Configuration.getTemplate(Configuration.java:466)
My code is as below,
mailBody = FreeMarkerTemplateUtils.processTemplateIntoString(freemarkerConf.getTemplate("mainMail.ftl","UTF-8"), model);
My templates are located in a folder under the classpath.
Make sure files are under: src/freemarker/alermail and then
<bean id="freemarkerConf" class="org.springframework.ui.freemarker.FreeMarkerConfigurationFactoryBean" >
<!-- Turn this off to always load via SpringTemplateLoader -->
<property name="preferFileSystemAccess" value="false"></property>
<property name="templateLoaderPath" value="classpath:/freemarker/alertmail/"></property>
</bean>
i have a Spring application and its working well so far. Now i want the properties file in an external config folder and not in the packed jar to change things without the need to repack. This is what i got:
<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<!-- <property name="locations" value="classpath:/springcontext.properties"/> -->
<property name="locations" value ="config/springcontext.properties" />
The outcommented one is working and the other one i dont get to work :/ Can someone help?
Edit:
Thx 4 comments so far.
Maybe my question wasnt clear enough :). I perform a Maven build and everything will be packaged and i want this folder to be NOT in the package nut next to the outcomming jar and in this folder i want the properties file. possible?
You can try something like this:
<context:property-placeholder
location="${ext.properties.dir:classpath:}/servlet.properties" />
And define ext.properties.dir property in your application server / jvm, otherwise the default properties location "classpath:/" (i.e., classes dir of .jar or .war) would be used:
-Dext.properties.dir=file:/usr/local/etc/
BTW, very useful blog post.
You can use file prefix to load the external application context file some thing like this
<context:property-placeholder location="file:///C:/Applications/external/external.properties"/>
<context:property-placeholder location="classpath*:spring/*.properties" />
If you place it somewhere in the classpath in a directory named spring (change names/dirs accordingly), you can access with above
<property name="locations" value ="config/springcontext.properties" />
this will be pointing to web-inf/classes/config/springcontext.properties
This blog can help you. The trick is to use SpEL (spring expression language) to read the system properties like user.home, to read user home directory using SpEL you could use #{ systemProperties['user.home']} expression inside your bean elements. For example to access your properties file stored in your home directory you could use the following in your PropertyPlaceholderConfigurer, it worked for me.
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<value>file:#{ systemProperties['user.home']}/ur_folder/settings.properties</value>
</property>
</bean>
This question is kind of old, but wanted to share something which worked for me. Hope it will be useful for people who are searching for some information accessing properties in an external location.
This is what has worked for me.
Property file contents:
PROVIDER_URL=t3://localhost:8003,localhost:8004
applicationContext.xml file contents: (Spring 3.2.3)
Note: ${user.home} is a system property from OS.
<context:property-placeholder system-properties-mode="OVERRIDE" location="file:${user.home}/myapp/latest/bin/my-env.properties"/>
<bean id="appsclusterJndiTemplate" class="org.springframework.jndi.JndiTemplate">
<property name="environment">
<props>
<prop key="java.naming.factory.initial">weblogic.jndi.WLInitialContextFactory</prop>
<prop key="java.naming.provider.url">${PROVIDER_URL}</prop>
</props>
</property>
</bean>
${PROVIDER_URL} got replaced with the value in the properties the file
One way to do it is to add your external config folder to the classpath of the java process. That's how I've often done it in the past.
<context:property-placeholder location="file:/apps/tomcat/ath/ath_conf/pcr.application.properties" />
This works for me.
Local development machine path is C:\apps\tomcat\ath\ath_conf and in server /apps/tomcat/ath/ath_conf
Both works for me
in my web.xml i want to read the welcome file from property file
something like:
<welcome-file-list>
<welcome-file>${home.page}</welcome-file>
</welcome-file-list>
i have propertyPlaceholderConfigurer configured:
<bean id="propertyPlaceholderConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:messages/application.properties</value>
</list>
</property>
</bean>
is there's additional param should be added to web.xml, or another bean needs to be defined or what ?
also i have another xml file on the same level of web.xml (under WEB-INF direclty)
can i read from property file in it in the same way ?
please advise.
It doesn't work like that; the web.xml file is completely unrelated to Spring.
What you could do is have a hard-coded welcome file, and inside that file, redirect to something defined in the Spring configuration, retrieving the page by grabbing the Spring context manually.