java微信公众平台开发事件推送

import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import org.apache.log4j.Logger;
import org.springframework.stereotype.Service;
import com.ifp.weixin.biz.core.CoreService;
import com.ifp.weixin.constant.Constant;
import com.ifp.weixin.entity.Message.resp.Article;
import com.ifp.weixin.entity.Message.resp.NewsMessage;
import com.ifp.weixin.entity.Message.resp.TextMessage;
import com.ifp.weixin.util.MessageUtil;  

@Service("coreService")
public class CoreServiceImpl implements CoreService {  

    public static Logger log = Logger.getLogger(CoreServiceImpl.class);  

    @Override
    public String processRequest(HttpServletRequest request) {
        String respMessage = null;
        try {
            // xml请求解析  ，本地方法
            Map<String, String> requestMap = MessageUtil.parseXml(request);  

            // 发送方帐号（open_id）
            String fromUserName = requestMap.get("FromUserName");  

            // 公众帐号
            String toUserName = requestMap.get("ToUserName");
            // 消息类型
            String msgType = requestMap.get("MsgType");  

            TextMessage textMessage = new TextMessage();
            textMessage.setToUserName(fromUserName);
            textMessage.setFromUserName(toUserName);
            textMessage.setCreateTime(new Date().getTime());
            textMessage.setMsgType(Constant.RESP_MESSAGE_TYPE_TEXT);
            textMessage.setFuncFlag(0);  

            String respContent = "";  

            // 文本消息
            if (msgType.equals(Constant.REQ_MESSAGE_TYPE_TEXT)) {
                // 接收用户发送的文本消息内容
                String content = requestMap.get("Content");  

                // 创建图文消息
                NewsMessage newsMessage = new NewsMessage();
                newsMessage.setToUserName(fromUserName);
                newsMessage.setFromUserName(toUserName);
                newsMessage.setCreateTime(new Date().getTime());
                newsMessage.setMsgType(Constant.RESP_MESSAGE_TYPE_NEWS);
                newsMessage.setFuncFlag(0);  

                List<Article> articleList = new ArrayList<Article>();  

                // 单图文消息
                if ("1".equals(content)) {
                    Article article = new Article();
                    article.setTitle("我是一条单图文消息");
                    article.setDescription("我是描述信息，哈哈哈哈哈哈哈。。。");
                    article.setPicUrl("http://www.iteye.com/upload/logo/user/603624/2dc5ec35-073c-35e7-9b88-274d6b39d560.jpg");
                    article.setUrl("http://tuposky.iteye.com");
                    articleList.add(article);  

                    // 设置图文消息个数
                    newsMessage.setArticleCount(articleList.size());
                    // 设置图文消息包含的图文集合  

                    newsMessage.setArticles(articleList);
                    // 将图文消息对象转换成xml字符串
                    respMessage = MessageUtil.newsMessageToXml(newsMessage);
                }
                // 多图文消息
                else if ("3".equals(content)) {  

                    Article article1 = new Article();
                    article1.setTitle("我是一条多图文消息");
                    article1.setDescription("");
                    article1.setPicUrl("http://www.isic.cn/viewResourcesAction//logo/20130913/2013091314543416032.jpg");
                    article1.setUrl("http://tuposky.iteye.com/blog/2008583");  

                    Article article2 = new Article();
                    article2.setTitle("微信公众平台开发教程Java版（二）接口配置 ");
                    article2.setDescription("");
                    article2.setPicUrl("http://www.isic.cn/viewResourcesAction//logo/20131021/2013102111243367254.jpg");
                    article2.setUrl("http://tuposky.iteye.com/blog/2008655");  

                    Article article3 = new Article();
                    article3.setTitle("微信公众平台开发教程Java版(三) 消息接收和发送");
                    article3.setDescription("");
                    article3.setPicUrl("http://www.isic.cn/viewResourcesAction//logo/20131021/2013102111291287031.jpg");
                    article3.setUrl("http://tuposky.iteye.com/blog/2017429");  

                    articleList.add(article1);
                    articleList.add(article2);
                    articleList.add(article3);
                    newsMessage.setArticleCount(articleList.size());  

                    newsMessage.setArticles(articleList);
                    respMessage = MessageUtil.newsMessageToXml(newsMessage);
                }  

                //事件处理开始
            } else if (msgType.equals(Constant.REQ_MESSAGE_TYPE_EVENT)) {
                // 事件类型
                String eventType = requestMap.get("Event");  

                if (eventType.equals(Constant.EVENT_TYPE_SUBSCRIBE)) {
                    // 关注
                    respContent = "感谢您关注偶,这里会给您提供最新的公司资讯和公告！\n";
                    StringBuffer contentMsg = new StringBuffer();
                    contentMsg.append("您还可以回复下列数字，体验相应服务").append("\n\n");
                    contentMsg.append("1  我就是个测试的").append("\n");
                    contentMsg.append("2  我木有").append("\n");
                    contentMsg.append("3  我是多图文").append("\n");
                    respContent = respContent+contentMsg.toString();  

                } else if (eventType.equals(Constant.EVENT_TYPE_UNSUBSCRIBE)) {
                    // 取消关注,用户接受不到我们发送的消息了，可以在这里记录用户取消关注的日志信息  

                }  else if (eventType.equals(Constant.EVENT_TYPE_CLICK)) {  

                    // 事件KEY值，与创建自定义菜单时指定的KEY值对应
                    String eventKey = requestMap.get("EventKey");  

                    // 自定义菜单点击事件
                    if (eventKey.equals("11")) {
                        respContent = "天气预报菜单项被点击！";
                    } else if (eventKey.equals("12")) {
                        respContent = "公交查询菜单项被点击！";
                    }
                }
                textMessage.setContent(respContent);
                respMessage = MessageUtil.textMessageToXml(textMessage);  

            }  

        } catch (Exception e) {
            e.printStackTrace();
        }
        return respMessage;
    }
}