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 ?

Answer 1

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.