Java - Spring property file configuration for jar file

Question

Java-Spring I have modules based project, i have module for DAO layer and module for business layer which is dependent upon DAO layer and web layer dependent upon DAO layer and business layer.

I am using maven for project compilation. and jar of every components are group under web projects lib folder.

Problem is i have spring context file and .property file inside DAO jar and following is my configuration but i spring unable to load properties i also tried prefixing value="classpath:abc.properties but it didn't work.

When i open the DAO jar both spring context and .properties files are on root.

<bean id="applicationProperties" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="location" value="abc.properties" />
  </bean>

<bean id="cmfModelDataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
      <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
      <property name="url" value="${jdbc.ConnectionUrl}"/>
      <property name="username" value="${jdbc.Username}"/>
      <property name="password" value="${jdbc.Password}"/>
  </bean>

any idea how to quick fix this issue ?

To support the above comment: http://stackoverflow.com/questions/3294423/spring-classpath-prefix-difference — Kevin Bowersox, Aug 31 '12 at 20:48
I assume the error you get is a FileNotFoundException? Can you post the full thing just to be sure? — matt b, Aug 31 '12 at 20:50
Have you tried to load the specified resource with classloader.getResource(), did it give you an exception ? — Boris Treukhov, Sep 02 '12 at 07:24

gdfbarbosa · Accepted Answer · 2012-09-01T18:12:57.840

I have a multi-module web project with Spring using the following code:

<context:property-placeholder location="classpath:env/env.properties" />

<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
    <property name="driverClassName" value="${env.datasource.driver}" />
    <property name="url" value="${env.datasource.url}" />
    <property name="username" value="${env.datasource.username}" />
    <property name="password" value="${env.datasource.password}" />
</bean>

Don`t forget to verify the namespace url in the xml file:

xmlns:context="http://www.springframework.org/schema/context";

The folder env must be in classpath, so Spring can find it. My properties file is also inside a jar, and it`s working just fine.

score 0 · Answer 2 · answered Sep 01 '12 at 18:24

I had that error and int might have to do with the way you are initializing the context, for example in my web app the problem was somehing with the filter I setup in the web.xml file. Also I end up using not an xml file but an Annotated Config Class and placed this in the web.xml:

<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
    <param-name>contextClass</param-name>
    <param-value>
      org.springframework.web.context.support.AnnotationConfigWebApplicationContext
  </param-value>
</context-param>
<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>com.myapp.configuration.SpringConfig</param-value>
</context-param>

If you really want to use an xml file you must change the AnnotationConfigWebApplicationContext for an XmlWebApplicationContext. You should tell us how are you initilizing your context (like the code or web.xml if this is does not solve your issue)

Java - Spring property file configuration for jar file

2 Answers2