Java的微信开发中使用XML格式和JSON格式数据的示例

XML
微信XML消息model定义：

package cn.wx.server; import org.dom4j.Document;import org.dom4j.DocumentException;import org.dom4j.DocumentHelper;import org.dom4j.Element; /** * @title cn.wx.serverXMLMsg.java * @todo TODO * @author lpe234 * @time 2014年5月21日下午2:13:27 */public class XMLMsg {//普通消息基本变量 String ToUserName; String FromUserName; String CreateTime; String MsgType; String Content; String MsgId;//事件推送变量 String Event;//自定义菜单项 String EventKey;    public String getEventKey() {  return EventKey; }  public void setEventKey(String eventKey) {  EventKey = eventKey; }  public XMLMsg(String str) throws DocumentException {  Document doc = DocumentHelper.parseText(str);  Element root = doc.getRootElement();  this.ToUserName = root.elementText("ToUserName");  this.FromUserName = root.elementText("FromUserName");  this.CreateTime = root.elementText("CreateTime");  this.MsgType = root.elementText("MsgType");  this.Content = root.elementText("Content");  this.MsgId = root.elementText("MsgId");     this.Event = root.elementText("Event");  this.EventKey = root.elementText("EventKey"); }  public String getEvent() {  return Event; }  public void setEvent(String event) {  Event = event; }  public String getToUserName() {  return ToUserName; }  public void setToUserName(String toUserName) {  ToUserName = toUserName; }  public String getFromUserName() {  return FromUserName; }  public void setFromUserName(String fromUserName) {  FromUserName = fromUserName; }  public String getCreateTime() {  return CreateTime; }  public void setCreateTime(String createTime) {  CreateTime = createTime; }  public String getMsgType() {  return MsgType; }  public void setMsgType(String msgType) {  MsgType = msgType; }  public String getContent() {  return Content; }  public void setContent(String content) {  Content = content; }  public String getMsgId() {  return MsgId; }  public void setMsgId(String msgId) {  MsgId = msgId; }}

JSON
这里我们使用json-lib，注意一下需要以下几个jar包的支持：

• json-lib-2.4-jdk15.jar
• commons-logging-1.1.3.jar
• ezmorph-1.0.6.jar
• commons-lang-2.4.jar
• commons-collections.jar
• commons-beanutils-1.8.0.jar

以下是简单的AccessToken类，返回String类型的access_token

package cn.wx.server; import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.net.MalformedURLException;import java.net.URL;import java.net.URLConnection; import net.sf.json.JSONObject; public class AccessToken {  /**  * 根据注册信息，获得的参数，提交get请求，获得accessTkoen  * @author lpe234  * @time 2014-5-21 00:52:15  */ String appID = "XXXXXXXXXXXXXX"; String appsecret = "XXXXXXXXXXXXXXXXX";//微信服务号或者申请测试账号的订阅号才有。。。 String preUrl = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=%s&secret=%s"; String tempUrl = String.format(preUrl, appID, appsecret);/** 测试* public static void main(String[] args) {*  AccessToken as = new AccessToken();*  System.out.println(as.get());* }*/ //返回String类型access_token public String get() {  String temp = null;  temp = getJSON();  JSONObject j = JSONObject.fromObject(temp);  temp = j.getString("access_token");  //System.out.println(temp);  return temp; }  // 获取wx服务器返回JSON数据,private内部调用 private String getJSON() {  String temp = null;  try {   URL url = new URL(tempUrl);   URLConnection conn = url.openConnection();   InputStreamReader isr = new InputStreamReader(conn.getInputStream());   BufferedReader br = new BufferedReader(isr);   temp = br.readLine();  } catch (MalformedURLException e) {   // TODO Auto-generated catch block   e.printStackTrace();  } catch (IOException e) {   // TODO Auto-generated catch block   e.printStackTrace();  }  //System.out.println(temp);  return temp; }}

额 大体就是这样