微信公众平台开发（3）-回复消息

一、回复文本消息
二、回复链接消息
三、回复音乐消息
四、回复图文消息
五、事件-订阅
六、事件-取消订阅
PS：当然还包括表情。参考：http://www.360doc.com/content/13/0803/13/13350344_304465190.shtml
完整代码：
微信接口配置的回调地址对应的Controller

import org.apache.commons.lang.StringUtils;  
import org.apache.log4j.Logger;  
import org.springframework.beans.factory.annotation.Autowired;  
import org.springframework.stereotype.Controller;  
import org.springframework.web.bind.annotation.RequestMapping;  
import org.springframework.web.bind.annotation.RequestMethod;  
  
  
import com.company.project.service.WeixinService;  
import com.company.project.util.Util;  
  
  
import javacommon.base.BaseRestSpringController;  
  
  
@Controller  
@RequestMapping("/wxapi")  
public class WeixinApiController extends BaseRestSpringController<Object, java.lang.Long>{  
public static final Logger log = Logger.getLogger(WeixinApiController.class);  
public static final String WX_TOKEN = "weixin";  
@Autowired  
private WeixinService wxService;  
/** 
* 微信回调地址 
* 
* @author qincd 
* @throws IOException  
* @date Nov 3, 2014 4:01:42 PM 
*/  
@RequestMapping(method=RequestMethod.GET)  
public void doGet(HttpServletRequest request,HttpServletResponse response) throws IOException {  
// 微信会在配置的回调地址上加上signature,nonce,timestamp,echostr4个参数  
String signature = request.getParameter("signature");  
String timestamp = request.getParameter("timestamp");  
String nonce = request.getParameter("nonce");  
String echostr = request.getParameter("echostr");  
  
log.info("微信传递的参数：");  
log.info("signature："+signature);  
log.info("timestamp："+timestamp);  
log.info("nonce："+nonce);  
log.info("echostr："+echostr);  
  
if (StringUtils.isEmpty(signature)) {  
return;  
}  
// 1).排序  
String sortString = sort(WX_TOKEN, timestamp, nonce);  
// 2).加密  
String mytoken = Util.sha1(sortString);  
// 3).校验签名  
if (StringUtils.isNotEmpty(mytoken) && mytoken.equals(signature)) {  
log.info("签名校验通过。");  
response.getWriter().println(echostr);  
}  
else {  
log.warn("签名校验失败。");  
}  
}  
  
@RequestMapping(method=RequestMethod.POST)  
public void doPost(HttpServletRequest request,HttpServletResponse response) throws IOException {  
// 处理请求、响应  
request.setCharacterEncoding("utf-8");  
response.setCharacterEncoding("utf-8");  
String message = wxService.processRequest(request);  
response.getWriter().println(message);  
}  
  
/** 
* 将token,timestamp,nonce按字典序排序，并返回拼接的字符串 
* 
* @author qincd 
* @date Nov 3, 2014 4:09:43 PM 
*/  
public static String sort(String token,String timestamp,String nonce) {  
String[] strArray = {token,timestamp,nonce};  
Arrays.sort(strArray);  
  
StringBuilder sbuilder = new StringBuilder();  
for (String str : strArray) {  
sbuilder.append(str);  
}  
  
return sbuilder.toString();  
}  
  
  
}  
  
  
import java.util.ArrayList;  
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.company.project.model.resp.Articles;  
import com.company.project.model.resp.Music;  
import com.company.project.model.resp.MusicMessage;  
import com.company.project.model.resp.NewsMessage;  
import com.company.project.model.resp.TextMessage;  
import com.company.project.util.MessageUtil;  
  
  
@Service  
public class WeixinService {  
public static Logger log = Logger.getLogger(WeixinService.class);  
  
public String processRequest(HttpServletRequest req) {  
// 解析微信传递的参数  
String str = null;  
try {  
Map<String,String> xmlMap = MessageUtil.parseXml(req);  
str = "请求处理异常，请稍后再试！";  
  
String ToUserName = xmlMap.get("ToUserName");  
String FromUserName = xmlMap.get("FromUserName");  
String MsgType = xmlMap.get("MsgType");  
  
if (MsgType.equals(MessageUtil.MESSAGG_TYPE_TEXT)) {  
// 用户发送的文本消息  
String content = xmlMap.get("Content");  
log.info("用户：[" + FromUserName + "]发送的文本消息：" + content);  
  
// 链接  
if (content.contains("csdn")) {  
TextMessage tm = new TextMessage();  
tm.setToUserName(FromUserName);  
tm.setFromUserName(ToUserName);  
tm.setMsgType(MessageUtil.MESSAGG_TYPE_TEXT);  
tm.setCreateTime(System.currentTimeMillis());  
tm.setContent("我的CSDN博客：<a href="http://my.csdn.net/qincidong">我的CSDN博客</a>
");  
return MessageUtil.textMessageToXml(tm);  
}  
  
if (content.contains("图文")) {  
NewsMessage nm = new NewsMessage();  
nm.setFromUserName(ToUserName);  
nm.setToUserName(FromUserName);  
nm.setCreateTime(System.currentTimeMillis());  
nm.setMsgType(MessageUtil.MESSAGG_TYPE_NEWS);  
List<Articles> articles = new ArrayList<Articles>();  
Articles e1 = new Articles();  
e1.setTitle("马云接受外媒专访：中国的五大银行想杀了“我”");  
e1.setDescription("阿里巴巴集团上市大获成功，《华尔街日报》日前就阿里巴巴集团、支付宝等话题采访了马云，马云也谈到了与苹果Apple Pay建立电子支付联盟的可能性。本文摘编自《华尔街日报》，原文标题：马云谈阿里巴巴将如何帮助美国出口商，虎嗅略有删节。");  
e1.setPicUrl("http://img1.gtimg.com/finance/pics/hv1/29/53/1739/113092019.jpg");  
e1.setUrl("http://finance.qq.com/a/20141105/010616.htm?pgv_ref=aio2012&ptlang=2052");  
  
Articles e2 = new Articles();  
e2.setTitle("史上最牛登机牌：姓名竟是微博名 涉事航空公司公开致歉");  
e2.setDescription("世上最遥远的距离是飞机在等你登机，你却过不了安检。");  
e2.setPicUrl("http://p9.qhimg.com/dmfd/328_164_100/t011946ff676981792d.png");  
e2.setUrl("http://www.techweb.com.cn/column/2014-11-05/2093128.shtml");  
articles.add(e1);  
articles.add(e2);  
  
nm.setArticles(articles);  
nm.setArticleCount(articles.size());  
  
String newsXml = MessageUtil.NewsMessageToXml(nm);  
log.info("
"+newsXml);  
return newsXml;  
}  
if (content.contains("音乐")) {  
MusicMessage mm =  new MusicMessage();  
mm.setFromUserName(ToUserName);  
mm.setToUserName(FromUserName);  
mm.setMsgType(MessageUtil.MESSAGG_TYPE_MUSIC);  
mm.setCreateTime(System.currentTimeMillis());  
Music music = new Music();  
music.setTitle("Maid with the Flaxen Hair");  
music.setDescription("测试音乐");  
music.setMusicUrl("http://yinyueshiting.baidu.com/data2/music/123297915/1201250291415073661128.mp3?xcode=e2edf18bbe9e452655284217cdb920a7a6a03c85c06f4409");  
music.setHQMusicUrl("http://yinyueshiting.baidu.com/data2/music/123297915/1201250291415073661128.mp3?xcode=e2edf18bbe9e452655284217cdb920a7a6a03c85c06f4409");  
mm.setMusic(music);  
  
String musicXml = MessageUtil.MusicMessageToXml(mm);  
log.info("musicXml:
" + musicXml);  
return musicXml;  
}  
  
// 响应  
TextMessage tm = new TextMessage();  
tm.setToUserName(FromUserName);  
tm.setFromUserName(ToUserName);  
tm.setMsgType(MessageUtil.MESSAGG_TYPE_TEXT);  
tm.setCreateTime(System.currentTimeMillis());  
tm.setContent("你好，你发送的内容是：
" + content);  
  
String xml = MessageUtil.textMessageToXml(tm);  
log.info("xml:" + xml);  
return xml;  
}  
else if (MsgType.equals(MessageUtil.MESSAGG_TYPE_EVENT)) {  
String event = xmlMap.get("Event");  
if (event.equals(MessageUtil.EVENT_TYPE_SUBSCRIBE)) {  
// 订阅  
TextMessage tm = new TextMessage();  
tm.setToUserName(FromUserName);  
tm.setFromUserName(ToUserName);  
tm.setMsgType(MessageUtil.MESSAGG_TYPE_TEXT);  
tm.setCreateTime(System.currentTimeMillis());  
tm.setContent("你好，欢迎关注[程序员的生活]公众号！[愉快]/呲牙/玫瑰
目前可以回复文本消息");  
return MessageUtil.textMessageToXml(tm);  
}  
else if (event.equals(MessageUtil.EVENT_TYPE_UNSUBSCRIBE)) {  
// 取消订阅  
log.info("用户【" + FromUserName + "]取消关注了。");  
}  
}  
} catch (Exception e) {  
e.printStackTrace();  
log.error("处理微信请求时发生异常：");  
}  
  
return str;  
}  
}