Before post this Question, I google to get Properties from Spring project(Its NOT web-based project). I am confused as every one are talking about application-context.xml and have configuration like
However, I am working on normal Java Project with Spring(NO Web-app and stuff like that). But I would like to get some common properties from properties file and that needs to be used in JAVA file. How can achieve this by using Spring/Spring Annotations?
Where I should configure myprops.properties file under my project and how to invoke through spring?
My understanding is application-context.xml is used ONLY for web based projects. If not, how should I configure this application-context.xml as I do NOT have web.xml to define the application-context.xml
You can create an XML based application context like:
ApplicationContext ctx = new ClassPathXmlApplicationContext("conf/appContext.xml");
if the xml file is located on your class path. Alternatively, you can use a file on the file system:
ApplicationContext ctx = new FileSystemXmlApplicationContext("conf/appContext.xml");
More information is available in the Spring reference docs. You should also register a shutdown hook to ensure graceful shutdown:
ctx.registerShutdownHook();
Next, you can use the PropertyPlaceHolderConfigurer to extract the properties from a '.properties' file and inject them into your beans:
<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations" value="classpath:com/foo/jdbc.properties"/>
</bean>
<bean id="dataSource" destroy-method="close" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="${jdbc.driverClassName}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
Lastly, if you prefer annotation based config, you can use the @Value
annotation to inject properties into you beans:
@Component
public class SomeBean {
@Value("${jdbc.url}")
private String jdbcUrl;
}