采用策略模式实现Post和MQ的转发

• 策略模式进行设计如下

public class StrategyContext {
	private static SendStrategy mqStrategy = null;
	private static SendStrategy postStrategy = null;
	static {
		mqStrategy = new MqStrategy();
		postStrategy = new PostStrategy();
	}
	public static boolean sendData(String data, String url, String appType,
			String sendWay) {
		if ("MqStrategy".equals(sendWay)) {
			Log.debug("MqStrategy 方式发送数据");
			return mqStrategy.send(data, url, appType);
		} else if ("PostStrategy".equals(sendWay)) {
			Log.debug("PostStrategy 方式发送数据");
			return postStrategy.send(data, url, appType);
		} else {
			Log.info("没有指定发送方式！！！sendWay:" + sendWay);
			return false;
		}
	}
	}

• Post采用Http协议，转发的代码实现：

package com.cloud.strategy;



import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.params.HttpMethodParams;

import com.cloud.util.Log;

public class PostStrategy implements SendStrategy {

	@Override
	public boolean send(String data, String url, String appType) {
		HttpClient client = new HttpClient();
		PostMethod post = new PostMethod(url);
		boolean isSuccess = false;
		try {
			System.out.println(url);
			post.getParams().setParameter(
					HttpMethodParams.HTTP_CONTENT_CHARSET, "UTF-8");
			post.addParameter("data", data);
			Log.debug(this.getClass().getSimpleName() + " begin send data...");
			Log.debug(this.getClass().getSimpleName() + " send data : " + data);
			// 设置连接超时时间
			client.getHttpConnectionManager().getParams()
					.setConnectionTimeout(10000);
			// 设置响应超时时间
			client.getHttpConnectionManager().getParams().setSoTimeout(15000);
			int returnFlag = client.executeMethod(post);
			if (returnFlag == 200) {
				isSuccess = true;
			}
			Log.info(this.getClass().getSimpleName()
					+ " success receive form post: "
					+ post.getStatusLine().toString() + ",returnFlag="
					+ returnFlag);
		} catch (Exception e) {
			isSuccess = false;
			Log.error(this.getClass().getSimpleName()
					+ " fail receive form post: " + e.getMessage());
		} finally {
			if (post != null) {
				post.releaseConnection();
				Log.info(this.getClass().getSimpleName()
						+ " post.releaseConnection() " + "is coming");
			}
		}
		return isSuccess;
	}

}

• MQ的代码实现如下：

public class MqStrategy implements SendStrategy {
	static ObsDataMsgPublisher publisher = null;
	static {
		publisher = ObsDataMsgPublisher.getInstance();
	}

	@Override
	public boolean send(String data, String url, String appType) {
		if (publisher == null) {
			return false;
		}
		String queueName = PropertiesReader.getProp("jms.queue." + appType);
		System.out.println("queueName="+queueName);
		if (queueName == null || "".equals(queueName)) {
			return false;
		}
		return publisher.sendByQuene(data, queueName);
	}

}

• sendByQuene的代码实现如下：

package com.cloud.strategy;

import java.net.URLEncoder;

import javax.jms.DeliveryMode;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.Session;

import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.command.ActiveMQQueue;
import org.apache.activemq.command.ActiveMQTopic;
import org.springframework.jms.JmsException;
import org.springframework.jms.connection.CachingConnectionFactory;
import org.springframework.jms.core.JmsTemplate;
import org.springframework.jms.core.MessageCreator;

import com.cloud.util.PropertiesReader;


public class ObsDataMsgPublisher implements MessagePublisher {

	private static ObsDataMsgPublisher _instance = null;
	private static JmsTemplate jmsTemplate;

	private ObsDataMsgPublisher() {
	};

	public static synchronized ObsDataMsgPublisher getInstance() {
		if (_instance == null) {
			_instance = new ObsDataMsgPublisher();
			ActiveMQConnectionFactory mqFactory = new ActiveMQConnectionFactory();
			mqFactory.setBrokerURL(PropertiesReader.getProp("jms.url"));
			CachingConnectionFactory cachFactory = new CachingConnectionFactory(
					mqFactory);
			cachFactory.setSessionCacheSize(Integer.parseInt(PropertiesReader
					.getProp("jms.cachSessionNum")));
			jmsTemplate = new JmsTemplate(cachFactory);
			jmsTemplate.setPubSubDomain(false);// p2p方式
			jmsTemplate.setDeliveryMode(DeliveryMode.PERSISTENT);// 采用持久化方式
		}
		return _instance;
	}

	@Override
	public synchronized boolean sendByQuene(final String msg,
			final String queueName) {
		boolean ret = false;
		try {

			log.info(this.getClass().getSimpleName() + "--准备发送JMS消息，queueName："
					+ queueName);
			log.info(this.getClass().getSimpleName() + "--msg ：" + msg);
			jmsTemplate.setDefaultDestinationName(queueName);
			jmsTemplate.send(new MessageCreator() {
				@Override
				public Message createMessage(Session session)
						throws JMSException {
					try {
						return session.createTextMessage(URLEncoder.encode(msg,
								"utf-8"));
					} catch (Exception e) {
						e.printStackTrace();
					}
					return null;
				}
			});
			ret = true;
			log.info(this.getClass().getSimpleName() + "--JMS消息发送成功");
		} catch (JmsException e) {
			e.printStackTrace();
		}
		return ret;
	}

}