微信&java 开发2 发送文本消息并回复

@RequestMapping(value = "/dispatcher")
@ResponseBody
public void dispatcher(HttpServletRequest request,HttpServletResponse response) throws ParseException, org.dom4j.DocumentException {
LOG.info("Execute action's WeiXin:execute() method. Start:{}",System.currentTimeMillis() + "");
try {
/**
* 分发请求
*/
dispatchWeiXinRequest(request, response);
} catch (ServletException e) {
LOG.info("Execute action's WeiXin:execute() method Exception. {}",e.getMessage());
} catch (IOException e) {
LOG.info("Execute action's WeiXin:execute() method Exception. {}",e.getMessage());
}
LOG.info("Execute action's WeiXin:execute() method. End  :{}",System.currentTimeMillis() + "");
}

private void dispatchWeiXinRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException, ParseException, DocumentException {

if ("GET".equals(request.getMethod().toUpperCase().toString())) {
LOG.info("Execute action's WeiXin:dispatchWeiXinRequest() method. GET");
doGet(request, response);
} else if ("POST".equals(request.getMethod().toUpperCase().toString())) {
LOG.info("Execute action's WeiXin:dispatchWeiXinRequest() method. POST");
doPost(request, response);
}
}

private void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException, ParseException, DocumentException {
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
PrintWriter out = response.getWriter();
try {
Map<String, String> map = MessageUtil.xmlToMap(request);
String fromUserName = map.get("FromUserName");
String toUserName = map.get("ToUserName");
String msgType = map.get("MsgType");
String content = map.get("Content");

String message = null;
if(MessageUtil.MESSAGE_TEXT.equals(msgType)){
if("1".equals(content)){
message = MessageUtil.initText(toUserName, fromUserName, MessageUtil.firstMenu());
}else if("2".equals(content)){
message = MessageUtil.initNewsMessage(toUserName, fromUserName);
}
}
out.print(message);
} finally{
out.close();
}
}

/**
* 图文消息的组装
* @param toUserName
* @param fromUserName
* @return
*/
public static String initNewsMessage(String toUserName,String fromUserName){
String message = null;
List<News> newsList = new ArrayList<News>();
NewsMessage newsMessage = new NewsMessage();

News news = new News();
news.setTitle("欢迎");
news.setDescription("Hello World。");

String localImg = "D:\\cc.jpg";
File srcFile = new File(localImg);
String tarImg = ServletContextUtil.get().getRealPath("/images") + "\\cc2.jpg";
File tarFile = new File(tarImg);
if(!tarFile.exists()) {
try {
FileCopyUtils.copy(srcFile,tarFile);
} catch (IOException e) {
e.printStackTrace();
}
}
news.setPicUrl(WeiXinPropUtil.WebDomain + "/WeiXin_SSM/images/cc2.jpg");
news.setUrl("www.imooc.com");
newsList.add(news);
newsMessage.setToUserName(fromUserName);
newsMessage.setFromUserName(toUserName);
newsMessage.setCreateTime(new Date().getTime());
newsMessage.setMsgType(MESSAGE_NEWS);
newsMessage.setArticles(newsList);
newsMessage.setArticleCount(newsList.size());

message = newsMessageToXml(newsMessage);
return message;
}

public class News {
private String Title;
private String Description;
private String PicUrl;
private String Url;
public String getTitle() {
return Title;
}
public void setTitle(String title) {
Title = title;
}
public String getDescription() {
return Description;
}
public void setDescription(String description) {
Description = description;
}
public String getPicUrl() {
return PicUrl;
}
public void setPicUrl(String picUrl) {
PicUrl = picUrl;
}
public String getUrl() {
return Url;
}
public void setUrl(String url) {
Url = url;
}
}

public class NewsMessage extends BaseMessage{
private int ArticleCount;
private List<News> Articles;
public int getArticleCount() {
return ArticleCount;
}
public void setArticleCount(int articleCount) {
ArticleCount = articleCount;
}
public List<News> getArticles() {
return Articles;
}
public void setArticles(List<News> articles) {
Articles = articles;
}
}

/**
* 图文消息转为xml
* @param newsMessage
* @return
*/
public static String newsMessageToXml(NewsMessage newsMessage){
XStream xstream = new XStream();
xstream.alias("xml", newsMessage.getClass());
xstream.alias("item", new News().getClass());
return xstream.toXML(newsMessage);
}