微信公众号开发者原生态的servlet

微信公众号开发者原生态的servlet

如果想要成功成为微信公众号开发者，那么首先就是要服务器与微信公众号接入

查询公众号开发文档：https://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1421135319

根据微信的API来编写servlet，请求获取四个字段（signature、timestamp、nonce、echostr）这些参数的表示什么意义自己查询公众号的API。
对这三个字段进行list排序处理，通过SHA1加密算法返回密文，与第一个参数signature进行比较，hashcode如果一致，接入成功，原样返回echostr参数内容，则接入生效，成为开发者成功。
这个工程部署到Linux上。
微信公众号上的url写，部署工程的action请求地址。

值得注意的是上述接入公众号是servlet的doGet( )请求，直接上代码

编写JoinChatServlet.java文件的get请求方法：

package com.eastrobot.robotdev.wechat;import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.eastrobot.robotdev.Constants;
import com.eastrobot.robotdev.util.HttpUtils;
import com.eastrobot.robotdev.wechat.entity.AccessToken;
import com.eastrobot.robotdev.wechat.util.SHA1Utils;/*** 接入微信公众号平台* * @author han.sun* */
public class JoinChatServlet extends HttpServlet {private static final long serialVersionUID = 1L;private static Logger log = LoggerFactory.getLogger(JoinChatServlet.class);// private static ReceiveXmlUtils receiveXmlUtils;// 微信上填写的Token数据private static String Token = "sunhan";public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {request.setCharacterEncoding(Constants.CHARSET);response.setCharacterEncoding(Constants.CHARSET);log.debug("GEt请求成功");// 微信加密签名,signature结合了开发者填写的token参数和请求中的timestamp参数、nonce参数。String signature = request.getParameter("signature");// 时间戳String timestamp = request.getParameter("timestamp");// 随机数String nonce = request.getParameter("nonce");// 随机字符串String echostr = request.getParameter("echostr");List<String> params = new ArrayList<String>();params.add(Token);params.add(timestamp);params.add(nonce);// 1. 将token、timestamp、nonce三个参数进行字典排序Collections.sort(params, new Comparator<String>() {@Overridepublic int compare(String o1, String o2) {return o1.compareTo(o2);}});// 2. 将三个参数拼接成一个字符串进行SHA1进行加密String temp = SHA1Utils.encode(params.get(0) + params.get(1)+ params.get(2));// 3. 加密后的字符串与signature比较，标识该请求是来自微信if (temp.equals(signature)) {// 原样返回echostr参数内容,则接入成功response.getWriter().write(echostr);log.debug("echostr传回微信后台成功...");} else {log.debug("echostr传回微信后台失败...");}}
}

SHA1Utils.java

package com.eastrobot.robotdev.wechat.util;import java.security.MessageDigest;/*** SHA1算法* @author han.sun**/
public class SHA1Utils {private SHA1Utils() {}private static final char[] HEX_DIGITS = { '0', '1', '2', '3', '4', '5','6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };public static String getFormattedText(byte[] bytes) {int len = bytes.length;StringBuffer buffer = new StringBuffer(len * 2);// 把密文转换成十六进制的字符串形式for (int i = 0; i < bytes.length; i++) {buffer.append(HEX_DIGITS[(bytes[i] >> 4) & 0x0f]);buffer.append(HEX_DIGITS[bytes[i] & 0x0f]);}return buffer.toString();}public static String encode(String str){if (str==null) {return null;}try {MessageDigest messageDigest = MessageDigest.getInstance("SHA1");messageDigest.update(str.getBytes());return getFormattedText(messageDigest.digest());} catch (Exception e) {throw new RuntimeException(e);}}
}

此时如果微信公众号后台的URL、秘钥、token等填写无误，用微信公众号调试接口：https://mp.weixin.qq.com/debug?token=233128916&lang=zh_CN进行测试服务器是否已经接入，会返回json数据状态为200 OK那么恭喜你已经成功接入开发者模式

二、实现公众号被动回复消息

可以回复文本、图片、语音、图文等等众多多谋体文件。创建这些文件消息实体。发送与回复消息都是通过Xml格式进行传输

创建一个消息实体基类，供它的子类继承，不论是文本还是图片都有4个共有的属性，ToUserName、FromUserName、CreateTime、MsgType，分别是接收方、来自方、会话创建时间、会话类型。

BaseMessage.java

package com.eastrobot.robotdev.wechat.entity;import java.io.Serializable;import com.thoughtworks.xstream.annotations.XStreamAlias;/*** 请求消息基类* @author han.sun**/
public class BaseMessage implements Serializable{private static final long serialVersionUID = 1L;@XStreamAlias("ToUserName")public String ToUserName;@XStreamAlias("FromUserName")public String FromUserName;@XStreamAlias("CreateTime")public Long CreateTime;@XStreamAlias("MsgType")public String MsgType;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 Long getCreateTime() {return CreateTime;}public void setCreateTime(Long createTime) {CreateTime = createTime;}public String getMsgType() {return MsgType;}public void setMsgType(String msgType) {MsgType = msgType;}}

文本消息类

package com.eastrobot.robotdev.wechat.entity;/*** 文本消息类* @author han.sun**/
public class TextMessage extends BaseMessage {private static final long serialVersionUID = 1L;private String Content;private String MsgId;public String getContent() {return Content;}public void setContent(String content) {Content = content;}public String getMsgId() {return MsgId;}public void setMsgId(String msgId) {MsgId = msgId;}}

图片消息类

package com.eastrobot.robotdev.wechat.entity;import com.thoughtworks.xstream.annotations.XStreamAlias;/*** 图片消息类* @author han.sun**/
@XStreamAlias("xml")
public class ImageMessage extends BaseMessage {private static final long serialVersionUID = 1L;@XStreamAlias("Image")private Image Image;public Image getImage() {return Image;}public void setImage(Image image) {Image = image;}}

ImageMessage的图片消息类下的子属性Image类

package com.eastrobot.robotdev.wechat.entity;/*** 图片消息类的Image* @author han.sun**/
public class Image {/*** 图片的临时文件Id*/private String MediaId;public String getMediaId() {return MediaId;}public void setMediaId(String mediaId) {MediaId = mediaId;}}

我还实现了很多的类型，图文消息实体就不附加上来了

下面就是消息回复所用到的工具类啦，Message消息处理工具类（最重要的工具类）

此工具类是为了，把请求的Xml格式数据转换成Map集合类型，这样才好处理，用到消息实体时候，我们使用map.get（）方法就可以获取出想要的xml标签中的数据
在servlet处理好数据准备回复的时候，也要把数据进行输出xml形式返回给微信后台

package com.eastrobot.robotdev.wechat.util;import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;import javax.servlet.http.HttpServletRequest;import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;import com.eastrobot.robotdev.wechat.entity.ArticlesItem;
import com.eastrobot.robotdev.wechat.entity.ArticlesMessage;
import com.eastrobot.robotdev.wechat.entity.Image;
import com.eastrobot.robotdev.wechat.entity.ImageMessage;
import com.eastrobot.robotdev.wechat.entity.TextMessage;
import com.thoughtworks.xstream.XStream;/*** 处理Xml消息工具类* @author han.sun**/
public class MessageUtils {public static final String MESSAGE_SCAN = "SCAN";// 未关注公众号扫描二维码public static final String MESSAGE_TEXT = "text";// 文本public static final String MESSAGE_IMAGE = "image";// 图片public static final String MESSAGE_VOICE = "voice";// 语音public static final String MESSAGE_VIDEO = "video";// 视频public static final String MESSAGE_LINK = "link";// 连接public static final String MESSAGE_LOCATION = "location";// 地理位置事件public static final String MESSAGE_EVENT = "event";// 事件public static final String MESSAGE_SUBSCRIBE = "subscribe";// 关注public static final String MESSAGE_UNSUBSCRIBE = "unsubscribe";// 取消关注public static final String MESSAGE_CLICK = "CLICK";// 点击public static final String MESSAGE_VIEW = "VIEW";// t跳转链接urlpublic static final String MESSAGE_NEWS = "news";private MessageUtils() {}/*** 将接受到的xml转换成Map集合* @param request* @return Map集合*/public static Map<String, String> xmlToMap(HttpServletRequest request)throws IOException, DocumentException {Map<String, String> map = new HashMap<String, String>();SAXReader reader = new SAXReader();InputStream in = request.getInputStream();Document document = reader.read(in);Element root = document.getRootElement();@SuppressWarnings("unchecked")List<Element> list = root.elements();for (Element e : list) {map.put(e.getName(), e.getText());}in.close();return map;}/*** 将文本信息转换成Xml* @param textMessage   文本消息实体* @return    准备返回的xml字符串*/private static String textMessageToXml(TextMessage textMessage) {XStream stream = new XStream();stream.alias("xml", textMessage.getClass());return stream.toXML(textMessage);}/*** 将图片消息转换成xml* @param imageMessage    图片消息实体* @return    准备返回的xml字符串*/private static String imageMessageToXml(ImageMessage imageMessage) {XStream stream = new XStream();stream.alias("xml", imageMessage.getClass());return stream.toXML(imageMessage);}/*** 图文消息转为xml* @param newsMessage* @return*/public static String articlesMessageToXml(ArticlesMessage articlesMessage){XStream xstream = new XStream();xstream.alias("xml", articlesMessage.getClass());xstream.alias("item", new ArticlesItem().getClass());return xstream.toXML(articlesMessage);}/*** 图文消息的组装(类型为news)* @param toUserName* @param fromUserName* @return*/public static String initArticlesMessage(String toUserName,String fromUserName){String message = null;List<ArticlesItem> newsList = new ArrayList<ArticlesItem>();ArticlesMessage newsMessage = new ArticlesMessage();ArticlesItem article = new ArticlesItem();article.setTitle("图文消息");article.setDescription("你,在或者不在;这些年风里,雨里；无论，快乐还是哀愁；我都将终点，等你 。");article.setPicUrl("http://ctr.demo.xiaoi.com/robot-dev/image/028.jpg");article.setUrl("https://www.baidu.com");newsList.add(article);newsMessage.setToUserName(fromUserName);newsMessage.setFromUserName(toUserName);newsMessage.setCreateTime(new Date().getTime());newsMessage.setMsgType(MESSAGE_NEWS);newsMessage.setArticles(newsList);newsMessage.setArticleCount(newsList.size());message = articlesMessageToXml(newsMessage);return message;}/*** 文本消息的组装* @param content* @param toUserName* @param fromUserName* @return  发送给客户端*/public static String initTextMessage(String content, String toUserName,String fromUserName) {String message = null;TextMessage textMessage = new TextMessage();textMessage.setContent(content);textMessage.setCreateTime(new Date().getTime());textMessage.setFromUserName(toUserName);textMessage.setToUserName(fromUserName);textMessage.setMsgType(MESSAGE_TEXT);message = textMessageToXml(textMessage);return message;}/*** 图片消息的组装* @param mediaId* @param toUserName* @param fromUsername* @return    发送给客户端*/public static String initImageMessage(String mediaId, String toUserName,String fromUserName) {String message = null;ImageMessage imageMessage = new ImageMessage();Image image = new Image();image.setMediaId(mediaId);imageMessage.setImage(image);imageMessage.setFromUserName(toUserName);imageMessage.setToUserName(fromUserName);imageMessage.setCreateTime(new Date().getTime());imageMessage.setMsgType(MESSAGE_IMAGE);message = imageMessageToXml(imageMessage);return message;}public static String initMuenMessage() {StringBuffer bf = new StringBuffer();bf.append("你，在或者不在\n");bf.append("这些年风里，雨里\n");bf.append("无论是快乐，哀愁\n");bf.append("我都将终点，等你\n");return bf.toString();}
}

实现图片回复的功能，因为图片不是在微信后台的，所以必要我们提供的服务器来进行预上传到公众号的临时素材库中（失效是三天吧）。公众号的API中提供的接口中要求必须有一个MediaId，这就是此类的作用

package com.eastrobot.robotdev.wechat.util;import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;import net.sf.json.JSONObject;import com.eastrobot.robotdev.Constants;
import com.eastrobot.robotdev.util.HttpUtils;
import com.eastrobot.robotdev.wechat.entity.AccessToken;/*** 上传图片到临时素材库类* @author han.sun**/
public class WechatUtils {private static final String APPID = "wx7eea4228e2073fb8";private static final String APPSECRET = "13f608d28a4d2cefedb790fa321766fb";private static final String ACCESS_TOKEN_URL = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=APPID&secret=APPSECRET";private static final String UPLOAD_URL = "https://api.weixin.qq.com/cgi-bin/media/upload?access_token=ACCESS_TOKEN&type=TYPE";private WechatUtils(){}/*** doGet形式的HttpClient请求* @param url   接口地址* @return  返回Json对象*/public static JSONObject doGetStr(String url) {JSONObject jsonObject = null;String result = HttpUtils.get(url, Constants.CHARSET);jsonObject = JSONObject.fromObject(result);return jsonObject;}/*** 获取AccessToken* @return AccessToken* @author han.sun*/public static AccessToken getAccessToken() {AccessToken token = new AccessToken();String url = ACCESS_TOKEN_URL.replace("APPID", APPID).replace("APPSECRET", APPSECRET);JSONObject jsonObject = doGetStr(url);if (jsonObject != null) {token.setToken(jsonObject.getString("access_token"));token.setExpiresIn(jsonObject.getInt("expires_in"));}return token;}/*** 上传本地文件到微信获取mediaId* @param filePath   文件路径* @param accessToken   令牌* @param type    消息类型* @return 返回mediaId*/public static String upload(String filePath, String accessToken, String type)throws IOException, NoSuchAlgorithmException,NoSuchProviderException, KeyManagementException {System.out.println("filePath：" + filePath);File file = new File(filePath);if (!file.exists() || !file.isFile()) {throw new IOException("文件不存在");}String url = UPLOAD_URL.replace("ACCESS_TOKEN", accessToken).replace("TYPE", type);URL urlObj = new URL(url);// 连接HttpURLConnection con = (HttpURLConnection) urlObj.openConnection();con.setRequestMethod("POST");con.setDoInput(true);con.setDoOutput(true);con.setUseCaches(false);// 设置请求头信息con.setRequestProperty("Connection", "Keep-Alive");con.setRequestProperty("Charset", "UTF-8");// 设置边界String BOUNDARY = "----------" + System.currentTimeMillis();con.setRequestProperty("Content-Type", "multipart/form-data; boundary="+ BOUNDARY);StringBuilder sb = new StringBuilder();sb.append("--");sb.append(BOUNDARY);sb.append("\r\n");sb.append("Content-Disposition: form-data;name=\"file\";filename=\""+ file.getName() + "\"\r\n");sb.append("Content-Type:application/octet-stream\r\n\r\n");byte[] head = sb.toString().getBytes("utf-8");// 获得输出流OutputStream out = new DataOutputStream(con.getOutputStream());// 输出表头out.write(head);// 文件正文部分// 把文件已流文件的方式 推入到url中DataInputStream in = new DataInputStream(new FileInputStream(file));int bytes = 0;byte[] bufferOut = new byte[1024];while ((bytes = in.read(bufferOut)) != -1) {out.write(bufferOut, 0, bytes);}in.close();// 结尾部分byte[] foot = ("\r\n--" + BOUNDARY + "--\r\n").getBytes("utf-8");// 定义最后数据分隔线out.write(foot);out.flush();out.close();StringBuffer buffer = new StringBuffer();BufferedReader reader = null;String result = null;try {// 定义BufferedReader输入流来读取URL的响应reader = new BufferedReader(new InputStreamReader(con.getInputStream()));String line = null;while ((line = reader.readLine()) != null) {buffer.append(line);}if (result == null) {result = buffer.toString();}} catch (IOException e) {e.printStackTrace();} finally {if (reader != null) {reader.close();}}JSONObject jsonObj = JSONObject.fromObject(result);System.out.println(jsonObj);String typeName = "media_id";if (!"image".equals(type)) {typeName = type + "_media_id";}String mediaId = jsonObj.getString(typeName);return mediaId;}}

三、实现查询天气的功能

根据天气的接口，来定义查询出来的天气实体类。进行查询天气并且处理我们场景实用的信息

package com.eastrobot.robotdev.wechat.weather;import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.List;import org.slf4j.Logger;
import org.slf4j.LoggerFactory;import com.eastrobot.robotdev.Constants;
import com.eastrobot.robotdev.util.HttpUtils;
import com.google.gson.Gson;/*** 拼接查询天气接口所需的URL，查询天气* @author han.sun**/
public class BaiduWeather {public static final Logger log = LoggerFactory.getLogger(BaiduWeather.class);private static final String API = "http://api.map.baidu.com/telematics/v3/weather?";private static final String AK = "81218080E79C9685b35e757566d8cbe5";private static final String OUTPUT = "json";/*** 获取天气的结果* @param location    地点* @return    该地点的天气信息*/public static String getResult(String location) {try {URLEncoder.encode(location, Constants.CHARSET);} catch (UnsupportedEncodingException e) {e.printStackTrace();}// 拼接urlStringBuffer sb = new StringBuffer();sb.append("location=");sb.append(location);sb.append("&output=");sb.append(OUTPUT);sb.append("&ak=");sb.append(AK);String url = API + sb.toString();// 百度天气返回的内容String result = "";result = HttpUtils.get(url, Constants.CHARSET);// 去解析查询回来的json字符串String message = handleResult(result);// 如果返回的不是Json那么还需要进行处理....return message;}/*** 处理查询出来的天气结果* @param result   原始的Json字符串* @return    真正返回给用户的字符串*/private static String handleResult(String result){Gson gson = new Gson();Status status = gson.fromJson(result, Status.class);List<Results> list = status.getResults();StringBuffer buffer = new StringBuffer();for (int i = 0; i < list.size(); i++) {Results results = list.get(i);List<Weather> weather_data = results.getWeather_data();for (int j = 0; j < weather_data.size(); j++) {Weather weather = weather_data.get(j);String date = weather.getDate();String weath= weather.getWeather();String temperature = weather.getTemperature();buffer.append(date+" ");buffer.append(weath+" ");buffer.append(temperature+" ");buffer.append("\n");}}return buffer.toString();} }

最后编写我们最核心的大脑系统servlet，编写JoinChatServlet中doPost（）方法，接入公众号是get请求，粉丝与公众号之间进行消息回复是Post请求

最终的servlet程序代码：

package com.eastrobot.robotdev.wechat;import java.io.IOException;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.Map;
import java.util.Random;import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;import org.dom4j.DocumentException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;import com.eastrobot.robotdev.Constants;
import com.eastrobot.robotdev.util.HttpUtils;
import com.eastrobot.robotdev.wechat.entity.AccessToken;
import com.eastrobot.robotdev.wechat.util.MessageUtils;
import com.eastrobot.robotdev.wechat.util.SHA1Utils;
import com.eastrobot.robotdev.wechat.util.WechatUtils;/*** 接入微信公众号平台* * @author han.sun* */
public class JoinChatServlet extends HttpServlet {private static final long serialVersionUID = 1L;private static Logger log = LoggerFactory.getLogger(JoinChatServlet.class);// private static ReceiveXmlUtils receiveXmlUtils;// 微信上填写的Token数据private static String Token = "sunhan";public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {request.setCharacterEncoding(Constants.CHARSET);response.setCharacterEncoding(Constants.CHARSET);log.debug("GEt请求成功");// 微信加密签名,signature结合了开发者填写的token参数和请求中的timestamp参数、nonce参数。String signature = request.getParameter("signature");// 时间戳String timestamp = request.getParameter("timestamp");// 随机数String nonce = request.getParameter("nonce");// 随机字符串String echostr = request.getParameter("echostr");List<String> params = new ArrayList<String>();params.add(Token);params.add(timestamp);params.add(nonce);// 1. 将token、timestamp、nonce三个参数进行字典排序Collections.sort(params, new Comparator<String>() {@Overridepublic int compare(String o1, String o2) {return o1.compareTo(o2);}});// 2. 将三个参数拼接成一个字符串进行SHA1进行加密String temp = SHA1Utils.encode(params.get(0) + params.get(1)+ params.get(2));// 3. 加密后的字符串与signature比较，标识该请求是来自微信if (temp.equals(signature)) {// 原样返回echostr参数内容,则接入成功response.getWriter().write(echostr);log.debug("echostr传回微信后台成功...");} else {log.debug("echostr传回微信后台失败...");}}public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {request.setCharacterEncoding(Constants.CHARSET);response.setCharacterEncoding(Constants.CHARSET);PrintWriter out = response.getWriter();String result = null;Map<String, String> map = null;try {map = MessageUtils.xmlToMap(request);} catch (DocumentException e1) {e1.printStackTrace();}String toUserName = map.get("ToUserName");String fromUserName = map.get("FromUserName");String msgType = map.get("MsgType");String content = map.get("Content");String echostr = request.getParameter("echostr");// 判断是否是微信接入激活验证，只有首次接入验证时才会收到echostr参数，此时需要把它直接返回if (echostr != null && echostr.length() > 1) {result = echostr;} else {// 判断请求是是否是文本类型 textif (MessageUtils.MESSAGE_TEXT.equals(msgType)) {if ("文艺".equals(content)) {result = imageProcess(toUserName, fromUserName);// String mediaId =// "7u19uWKlh-Nfpm8dAEpkhgxr0u5y0H5hxARQKsqtv3FjcMOV9dtFGxpYU4RvaV4t";// result = MessageUtils.initImageMessage(mediaId,// toUserName,fromUserName);} else if ("图文".equals(content)) {result = MessageUtils.initArticlesMessage(toUserName,fromUserName);} else {String api = "http://ctr.demo.xiaoi.com/robot/ask.action?";try {URLEncoder.encode(content, Constants.CHARSET);} catch (UnsupportedEncodingException e) {e.printStackTrace();}// 拼接urlStringBuffer bf = new StringBuffer();bf.append("question=");bf.append(content);bf.append("&paltform=weixin");String url = api + bf.toString();String message = HttpUtils.get(url, Constants.CHARSET);message = message.substring(message.indexOf("<Content>") + 9,message.indexOf("</Content>"));result = MessageUtils.initTextMessage(message, toUserName,fromUserName);}}}out.write(result);out.close();}private String imageProcess(String toUserName, String fromUserName) {String message = null;AccessToken token = WechatUtils.getAccessToken();String mediaId = null;Random ran = new Random();int i = ran.nextInt(28);String filePath = "/app/ibot-odin-robot-8005/webapps/robot-dev/image/0" + (i+1) + ".jpg";try {mediaId = WechatUtils.upload(filePath, token.getToken(),MessageUtils.MESSAGE_IMAGE);// mediaId =// "7u19uWKlh-Nfpm8dAEpkhgxr0u5y0H5hxARQKsqtv3FjcMOV9dtFGxpYU4RvaV4t";} catch (Exception e) {e.printStackTrace();}message = MessageUtils.initImageMessage(mediaId, toUserName,fromUserName);return message;}
}

当然了还有一个常用类HttpUtils工具类，进行各种接口的调用。但凡遇见Constant.CHARSET全部改成UTF-8就行啦。

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