Spring annotations @configuration, @Value, @Bean instances

Spring 3.0 adds @configuration, @Value, @Bean following a simple example

@Configuration: You can replace the bean configuration of an XML file with a Java file

@Value: Read xxx.properties into Java file for key-value pair injection

@Bean: @Configuration instantiate the Bean. Name: Specify the bean name

@Configuration code is as follows

Package guoguo.spring.config;

Import Guoguo.spring.config.impl.WorkerImpl;

Import Org.springframework.beans.factory.annotation.Value;
Import Org.springframework.context.annotation.Bean;
Import org.springframework.context.annotation.Configuration;

@Configuration public
class AppConfig {

	private @Value ("#{jdbcproperties.url}") String Jdbcurl;
	Private @Value ("#{jdbcproperties.username}") String username;
	Private @Value ("#{jdbcproperties.password}") String password;
	
	@Bean (name = "worker") public
	worker Getworker () {
		return new Workerimpl ();
	}
	Test key value injected public
	String Getjdbcurl () {
		return jdbcurl;
	}

	Public String GetUserName () {
		return username;
	}

	Public String GetPassword () {
		return password;
	}
}

The XML file is configured as follows

<?xml version= "1.0" encoding= "UTF-8"?> <beans
xmlns= "Http://www.springframework.org/schema/beans"
  xmlns:xsi= "http://www.w3.org/2001/XMLSchema-instance"
  xmlns:util= "http://www.springframework.org/ Schema/util "
  xmlns:context=" Http://www.springframework.org/schema/context "
  xsi:schemalocation="/http/ Www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
  http ://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.1.xsd
  http ://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd " >
	
	<util:properties id= "jdbcproperties" location= "Resources/env/jdbc.properties" ></util: properties>
	<context:component-scan base-package= "guoguo.spring"/>
	
</beans>

Test file

Package guoguo.spring.config;

Import Org.junit.Test;
Import Org.springframework.context.ApplicationContext;
Import Org.springframework.context.support.ClassPathXmlApplicationContext;

public class Testappconfig {

	@Test public
	void SetUp () throws Exception {
		ApplicationContext context = new Cla Sspathxmlapplicationcontext (GetContext ());
		Set the configuration file portion of the service corresponding business
		//annotationconfigapplicationcontext context = new Annotationconfigapplicationcontext ( Appconfig.class);
		AppConfig AppConfig = Context.getbean (appconfig.class);
		System.out.println ("Jdbcurl [" + appconfig.getjdbcurl () + "]");
		SYSTEM.OUT.PRINTLN ("username [" + appconfig.getusername () + "]");
		
		Worker worker = Context.getbean ("worker", Worker.class);
		
		System.out.println (Worker.dowork ());
	}
	
	Public string[] GetContext () {
		return new string[] {"Classpath*:resources/context.xml"};
	}
}

Test results

Jdbcurl [1234123]
username [1231231] This is
worker Impl