微信开发之消息回复--文本消息(三)

 1 <xml>
 2     <ToUserName>< ![CDATA[toUser] ]>
 3     ToUserName>
 4     <FromUserName>< ![CDATA[fromUser] ]>
 5     FromUserName>
 6     <CreateTime>1348831860CreateTime>
 7     <MsgType>< ![CDATA[text] ]>
 8     MsgType>
 9     <Content>< ![CDATA[this is a test] ]>
10     Content>
11     <MsgId>1234567890123456MsgId>
12 xml>

 1 public class TextMessage {
 2     private String ToUserName;//开发者微信号
 3     private String FromUserName;//发送方帐号（一个OpenID）
 4     private String CreateTime;//消息创建时间 （整型）
 5     private String MsgType;//消息类型
 6     private String Content;//内容
 7     private String MsgId;//消息id，64位整型
 8     public String getToUserName() {
 9         return ToUserName;
10     }
11     public void setToUserName(String toUserName) {
12         ToUserName = toUserName;
13     }
14     public String getFromUserName() {
15         return FromUserName;
16     }
17     public void setFromUserName(String fromUserName) {
18         FromUserName = fromUserName;
19     }
20     public String getCreateTime() {
21         return CreateTime;
22     }
23     public void setCreateTime(String createTime) {
24         CreateTime = createTime;
25     }
26     public String getMsgType() {
27         return MsgType;
28     }
29     public void setMsgType(String msgType) {
30         MsgType = msgType;
31     }
32     public String getContent() {
33         return Content;
34     }
35     public void setContent(String content) {
36         COntent= content;
37     }
38     public String getMsgId() {
39         return MsgId;
40     }
41     public void setMsgId(String msgId) {
42         MsgId = msgId;
43     }
44     @Override
45     public String toString() {
46         return "TextMessage [ToUserName=" + ToUserName + ", FromUserName="
47                 + FromUserName + ", CreateTime=" + CreateTime + ", MsgType="
48                 + MsgType + ", COntent=" + Content + ", MsgId=" + MsgId + "]";
49     }
50     
51 }

 1 package com.weixin.msgparam;
 2 /**
 3  * 常用参数类
 4  * @author 付先生
 5  * @date 2018年1月26日 下午4:40:50
 6  * @TODO TODO
 7  */
 8 public class MsgTypeParam {
 9     
10     public static final String MESSAGE_TEXT="text";//文本
11     public static final String MESSAGE_IMAGE="image";//图片
12     public static final String MESSAGE_NEWS="news";
13     public static final String MESSAGE_VOICE="voice";//语音
14     public static final String MESSAGE_VIDEO="video";//视频
15     public static final String MESSAGE_MUSIC="music";//音乐
16     public static final String MESSAGE_LOCATION="location";//位置
17     public static final String MESSAGE_LINK="link";//链接消息
18     public static final String MESSAGE_EVENT="event";//事件
19     public static final String MESSAGE_SUBSCRIBE="subscribe";//关注
20     public static final String MESSAGE_UNSUBSCRIBE="unsubscribe";//取消关注
21     public static final String MESSAGE_CLICK="CLICK";//点击
22     public static final String MESSAGE_VIEW="VIEW";//点击菜单跳转链接时的事件推送
23     public static final String MESSAGE_SCANCODE= "scancode_push";//扫码
24 }

public class MessageUtil {
    /**
     * xml 转 map
     * @param request
     * @return
     * @throws IOException
     * @throws DocumentException
     */
    public static Map xmlToMap(HttpServletRequest request) throws IOException, DocumentException{
        Map map = new HashMap();
        SAXReader reader = new SAXReader();
        InputStream ins = request.getInputStream();
        Document doc = reader.read(ins);
        Element root = doc.getRootElement();
        List list = root.elements();
        for(Element e : list){
            map.put(e.getName(), e.getText());
        }
        ins.close();
        return map;
    }
    
    /**
     * 将文本消息对象转换成xml
     * @param textMessage
     * @return
     * 注意事项：添加xstream.jar
     */
    public static String textMessageToXml(TextMessage textMessage){
        //XStream xStream = new XStream(new StaxDriver());
        xStream.alias("xml", textMessage.getClass());
        return xStream.toXML(textMessage);
    }
    
    /**
     * xStream本身不支持生成cdata块生成，对xstream扩展，让其自动生成cdata块
     */
    private static XStream xStream = new XStream(new StaxDriver(){
        public HierarchicalStreamWriter createWriter(Writer out){
            return new PrettyPrintWriter(out){
                boolean cdata = true;
                
                public void startNode(String name,Class clazz){
                    super.startNode(name, clazz);
                }
                protected void writeText(QuickWriter writer,String text){
                    if(cdata){
                        writer.write(");
                        writer.write(text);
                        writer.write("]]>");
                    }else{
                        writer.write(text);
                    }
                }
            };
        }
    });
        
}

/**
 * 初始化消息内容工具类
 * @author 付先生
 * @date 2018年1月26日 下午4:49:25
 * @TODO TODO
 */
public class InitMsgContentUtil {

    //初始化文本消息
    public static String initText(String toUserName,String fromUserName,String content){
        String message = "";
        TextMessage text = new TextMessage();
        text.setFromUserName(toUserName);
        text.setToUserName(fromUserName);
        text.setMsgType(MsgTypeParam.MESSAGE_TEXT);
        text.setCreateTime(new Date().getTime()+"");
        text.setContent(content);
        message = MessageUtil.textMessageToXml(text);
        return message;
    }
}

 1 @Override
 2     protected void doPost(HttpServletRequest req, HttpServletResponse resp)throws ServletException, IOException {
 3         req.setCharacterEncoding("UTF-8");
 4         resp.setCharacterEncoding("UTF-8");
 5         PrintWriter out = resp.getWriter();
 6         try {
 7             Map map = MessageUtil.xmlToMap(req);
 8             String fromUserName = map.get("FromUserName");
 9             String toUserName = map.get("ToUserName");
10             //消息类型
11             String msgType = map.get("MsgType");
12             String cOntent= map.get("Content");
13             //回复文本消息
14             String message = null;
15             //消息类型判断
16             if(MsgTypeParam.MESSAGE_TEXT.equals(msgType)){
17                 String text = "山东京帝软件微信公众号测试";
18                 //调用初始化文本消息方法
19                 message = InitMsgContentUtil.initText(toUserName, fromUserName, text);
20             }
21             out.print(message);
22         } catch (DocumentException e) {
23             e.printStackTrace();
24         }finally{
25             out.close();
26         }
27     }