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;  
    }  
}