事件驱动工具RRibbit使用

事件驱动设计可以有效降低模块间耦合度。

 

添加Rribbit依赖

<dependency>
	<groupId>org.rribbit</groupId>
	<artifactId>rribbit</artifactId>
	<version>2.7.0</version>
	<type>jar</type>
</dependency>
<dependency>
	<groupId>org.springframework</groupId>
	<artifactId>spring-web</artifactId>
	<version>3.0.5.RELEASE</version>
</dependency>

 

配置Spring

<context:component-scan base-package="com.sipsd" />
	<bean id="creator"
		class="org.rribbit.creation.SpringBeanClassBasedListenerObjectCreator">
		<property name="packageNames">
			<list>
				<value>com.sipsd</value>
			</list>
		</property>
		<property name="scanSubpackages" value="true" />
	</bean>

	<bean id="rrb" class="org.rribbit.util.RRiBbitUtil"
		factory-method="createRequestResponseBusForLocalUse">
		<constructor-arg ref="creator" />
		<constructor-arg value="true" />
	</bean>

 

Payment java to：

public class Payment implements Serializable {

	private static final long serialVersionUID = 7460614839664772877L;

	private String paymentId;
	private double amount;
	private String orderId;

	/**
	 * @return the orderId
	 */
	public String getOrderId() {
		return orderId;
	}

	/**
	 * @param orderId
	 *            the orderId to set
	 */
	public void setOrderId(String orderId) {
		this.orderId = orderId;
	}

	/**
	 * @return the paymentId
	 */
	public String getPaymentId() {
		return paymentId;
	}

	/**
	 * @param paymentId
	 *            the paymentId to set
	 */
	public void setPaymentId(String paymentId) {
		this.paymentId = paymentId;
	}

	/**
	 * @return the amount
	 */
	public double getAmount() {
		return amount;
	}

	/**
	 * @param amount
	 *            the amount to set
	 */
	public void setAmount(double amount) {
		this.amount = amount;
	}
}

 

Payment Service Interface：

public interface PaymentService {

	@Listener(hint = "createPayment")
	public Payment createPayment(Payment p);
}

 

Payment Service Implementation：

@Service("paymentService")
public class PaymentServiceImpl implements PaymentService {

	@Override
	public Payment createPayment(Payment p) {
		System.out.println("create payment");
		p.setAmount(90000);
		return p;
	}

}

 

测试：

public class TestRbit {
	private RequestResponseBus rrb;
	
	@Autowired
	PaymentServiceImpl ps;

	public static void main(String[] args) {
		new TestRbit().testRribbit();
	}
	
	private void testRribbit(){
		ApplicationContext context = new ClassPathXmlApplicationContext(
				"rribbit-appContext.xml");
		rrb = (RequestResponseBus) context.getBean("rrb");
		Payment p = rrb.send("createPayment", new Payment());
		System.out.println(p.getAmount());
	}
}

 

 

评论

1 楼 geeksun 2015-08-01  

按照代码运行的结果是空指针，方便给一份完整的代码出来吗？