Inject a java.util.Properties into a Spring Bean

Hard Coded

<bean id="adminUser" class="com.spring.InjectProperties">

       <!-- java.util.Properties -->

       <property name="emails">

              <props>

                     <prop key="admin">admin@nospam.com</prop>

                     <prop key="support">support@nospam.com</prop>

              </props>

       </property>

</bean>

From properties file

You can use “util:” namespace as well to create properties bean from properties file, and use bean reference for setter injection.

<util:properties id="emails" location="classpath:com/foo/emails.properties" />

Inject a property value into a Spring Bean using XML configurations

<util:properties id="serverProperties" location="file:./applications/MyApplication/server.properties"/>

<util:properties id="someConfig" location="file:./applications/MyApplication/config.properties"/>

Inject a property value into a Spring Bean using annotations

@Autowired+@Qualifier can double as by-name autowiring, but it's really meant for by-type autowiring with the ability to fine-tune the type.

Typically, @Autowired is used for by-type autowiring in Spring, and @Resource is used for by-name.

package com.abusecore.controller;

@Autowired

@Qualifier("serverProperties")

private Properties serverProperties;

@Autowired

@Qualifier("someConfig")

private Properties otherProperties;

OR

@Resource(name = "serverProperties")

private Properties serverProperties;

@Resource(name = "someConfig")

private Properties otherProperties;