使用Myeclipse+Java+图灵API开发微信公众号并发布到BAE测试

一、创建web工程

二、项目工程图



三、WechatServlet

package demo.servlet;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import demo.process.SignUtil;
import demo.process.WechatProcess;
/**
* 微信服务端收发消息接口
*
*/
public class WechatServlet extends HttpServlet {
//验证
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
// 微信加密签名
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");

PrintWriter out = response.getWriter();
// 通过检验signature对请求进行校验，若校验成功则原样返回echostr，表示接入成功，否则接入失败
if (SignUtil.checkSignature(signature, timestamp, nonce)) {
out.print(echostr);
out.close();
out = null;
}
}
//接收数据并返回
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");

StringBuffer sb = new StringBuffer();
InputStream is = request.getInputStream();
InputStreamReader isr = new InputStreamReader(is, "UTF-8");
BufferedReader br = new BufferedReader(isr);
String s = "";
while ((s = br.readLine()) != null) {
sb.append(s);
}
String xml = sb.toString(); //此即为接收到微信端发送过来的xml数据

//返回结果
String  result = new WechatProcess().processWechatMag(xml);

try {
OutputStream os = response.getOutputStream();
os.write(result.getBytes("UTF-8"));
os.flush();
os.close();
} catch (Exception e) {
e.printStackTrace();
}
}

}

四、ReceiveXmlEntity

package demo.entity;
/**
* 接收到的微信xml实体类
* @author pamchen-1
*
*/
public class ReceiveXmlEntity {
private String ToUserName="";
private String FromUserName="";
private String CreateTime="";
private String MsgType="";
private String MsgId="";
private String Event="";
private String EventKey="";
private String Ticket="";
private String Latitude="";
private String Longitude="";
private String Precision="";
private String PicUrl="";
private String MediaId="";
private String Title="";
private String Description="";
private String Url="";
private String Location_X="";
private String Location_Y="";
private String Scale="";
private String Label="";
private String Content="";
private String Format="";
private String Recognition="";

public String getRecognition() {
return Recognition;
}
public void setRecognition(String recognition) {
Recognition = recognition;
}
public String getFormat() {
return Format;
}
public void setFormat(String format) {
Format = format;
}
public String getContent() {
return Content;
}
public void setContent(String content) {
Content = content;
}
public String getLocation_X() {
return Location_X;
}
public void setLocation_X(String locationX) {
Location_X = locationX;
}
public String getLocation_Y() {
return Location_Y;
}
public void setLocation_Y(String locationY) {
Location_Y = locationY;
}
public String getScale() {
return Scale;
}
public void setScale(String scale) {
Scale = scale;
}
public String getLabel() {
return Label;
}
public void setLabel(String label) {
Label = label;
}
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 getUrl() {
return Url;
}
public void setUrl(String url) {
Url = url;
}
public String getPicUrl() {
return PicUrl;
}
public void setPicUrl(String picUrl) {
PicUrl = picUrl;
}
public String getMediaId() {
return MediaId;
}
public void setMediaId(String mediaId) {
MediaId = mediaId;
}
public String getEventKey() {
return EventKey;
}
public void setEventKey(String eventKey) {
EventKey = eventKey;
}
public String getTicket() {
return Ticket;
}
public void setTicket(String ticket) {
Ticket = ticket;
}
public String getLatitude() {
return Latitude;
}
public void setLatitude(String latitude) {
Latitude = latitude;
}
public String getLongitude() {
return Longitude;
}
public void setLongitude(String longitude) {
Longitude = longitude;
}
public String getPrecision() {
return Precision;
}
public void setPrecision(String precision) {
Precision = precision;
}
public String getEvent() {
return Event;
}
public void setEvent(String event) {
Event = event;
}
public String getMsgId() {
return MsgId;
}
public void setMsgId(String msgId) {
MsgId = msgId;
}
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;
}
}

五、SignUtil，这个类的token需要与后面微信公众号配置的token一致

package demo.process;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Arrays;

/**
* 请求校验工具类
*
*/
public class SignUtil {
// 与接口配置信息中的Token要一致,自己配置
private static String token = "Token";

/**
* 验证签名
*
* @param signature
* @param timestamp
* @param nonce
* @return
*/
public static boolean checkSignature(String signature, String timestamp, String nonce) {
String[] arr = new String[] { token, timestamp, nonce };
// 将token、timestamp、nonce三个参数进行字典序排序
Arrays.sort(arr);
StringBuilder content = new StringBuilder();
for (int i = 0; i < arr.length; i++) {
content.append(arr[i]);
}
MessageDigest md = null;
String tmpStr = null;

try {
md = MessageDigest.getInstance("SHA-1");
// 将三个参数字符串拼接成一个字符串进行sha1加密
byte[] digest = md.digest(content.toString().getBytes());
tmpStr = byteToStr(digest);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}

content = null;
// 将sha1加密后的字符串可与signature对比，标识该请求来源于微信
return tmpStr != null ? tmpStr.equals(signature.toUpperCase()) : false;
}

/**
* 将字节数组转换为十六进制字符串
*
* @param byteArray
* @return
*/
private static String byteToStr(byte[] byteArray) {
String strDigest = "";
for (int i = 0; i < byteArray.length; i++) {
strDigest += byteToHexStr(byteArray[i]);
}
return strDigest;
}

/**
* 将字节转换为十六进制字符串
*
* @param mByte
* @return
*/
private static String byteToHexStr(byte mByte) {
char[] Digit = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
char[] tempArr = new char[2];
tempArr[0] = Digit[(mByte >>> 4) & 0X0F];
tempArr[1] = Digit[mByte & 0X0F];

String s = new String(tempArr);
return s;
}
}

六、TulingApiProcess

package demo.process;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;

import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import org.json.JSONException;
import org.json.JSONObject;

/**
* 调用图灵机器人api接口，获取智能回复内容
*/
public class TulingApiProcess {
/**
* 调用图灵机器人api接口，获取智能回复内容，解析获取自己所需结果
* @param content
* @return
*/
public String getTulingResult(String content){
String result = "";
/** 此处为图灵api接口，参数key需要自己去注册申请，先以11111111代替，
* ps:我申请的不是官网的，个人选择 */
String apiUrl = "http://op.juhe.cn/robot/index?key=111111111&info=";
String param = "";
try {
param = apiUrl+URLEncoder.encode(content,"utf-8");
} catch (UnsupportedEncodingException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} //将参数转为url编码

/** 发送httpget请求 */
HttpGet request = new HttpGet(param);

try {
HttpResponse response = HttpClients.createDefault().execute(request);
if(response.getStatusLine().getStatusCode()==200){
result = EntityUtils.toString(response.getEntity());
}
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
/** 请求失败处理 */
if(null==result){
return "对不起，你说的话真是太高深了……";
}

try {
result = new JSONObject(result).getString("result");
JSONObject json = new JSONObject(result);
//以code=10000为例，参考图灵机器人api文档
if(100000==json.getInt("code")){
result = json.getString("text");
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return result;
}
}

七、WechatProcess

package demo.process;

import java.util.Date;

import demo.entity.ReceiveXmlEntity;

/**
* 微信xml消息处理流程逻辑类
* @author pamchen-1
*
*/
public class WechatProcess {
/**
* 解析处理xml、获取智能回复结果（通过图灵机器人api接口）
* @param xml 接收到的微信数据
* @return  最终的解析结果（xml格式数据）
*/
public String processWechatMag(String xml){
/** 解析xml数据，返回ReceiveXmlEntity实例化对象 */
ReceiveXmlEntity xmlEntity = new ReceiveXmlProcess().getMsgEntity(xml);

/** 以文本消息为例，调用图灵机器人api接口，获取回复内容 */
String result = "";
if("text".endsWith(xmlEntity.getMsgType())){
result = new TulingApiProcess().getTulingResult(xmlEntity.getContent());
}

/** 此时，如果用户输入的是“你好”，在经过上面的过程之后，result为“你也好”类似的内容
*  因为最终回复给微信的也是xml格式的数据，所有需要将其封装为文本类型返回消息
* */
result = new FormatXmlProcess().formatXmlAnswer(xmlEntity.getFromUserName(), xmlEntity.getToUserName(), result);

return result;
}
}

八、ReceiveXmlProcess

package demo.process;

import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.Iterator;
import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;

import demo.entity.ReceiveXmlEntity;
/**
* 解析接收到的微信xml，返回消息对象
*/
public class ReceiveXmlProcess {
/**
* 解析微信xml消息
* @param strXml
* @return
*/
public ReceiveXmlEntity getMsgEntity(String strXml){
ReceiveXmlEntity msg = null;
try {
if (strXml.length() <= 0 || strXml == null)
return null;

// 将字符串转化为XML文档对象
Document document = DocumentHelper.parseText(strXml);
// 获得文档的根节点
Element root = document.getRootElement();
// 遍历根节点下所有子节点
Iterator<?> iter = root.elementIterator();

// 遍历所有结点
msg = new ReceiveXmlEntity();
//利用反射机制，调用set方法
//获取该实体的元类型
Class<?> c = Class.forName("demo.entity.ReceiveXmlEntity");
msg = (ReceiveXmlEntity)c.newInstance();//创建这个实体的对象

while(iter.hasNext()){
Element ele = (Element)iter.next();
//获取set方法中的参数字段（实体类的属性）
Field field = c.getDeclaredField(ele.getName());
//获取set方法，field.getType())获取它的参数数据类型
Method method = c.getDeclaredMethod("set"+ele.getName(), field.getType());
//调用set方法
method.invoke(msg, ele.getText());
}
} catch (Exception e) {
// TODO: handle exception
System.out.println("xml 格式异常: "+ strXml);
e.printStackTrace();
}
return msg;
}
}

九、FormatXmlProcess

package demo.process;

import java.util.Date;
/**
* 封装最终的xml格式结果
* @author pamchen-1
*
*/
public class FormatXmlProcess {
/**
* 封装文字类的返回消息
* @param to
* @param from
* @param content
* @return
*/
public String formatXmlAnswer(String to, String from, String content) {
StringBuffer sb = new StringBuffer();
Date date = new Date();
sb.append("<xml><ToUserName><![CDATA[");
sb.append(to);
sb.append("]]></ToUserName><FromUserName><![CDATA[");
sb.append(from);
sb.append("]]></FromUserName><CreateTime>");
sb.append(date.getTime());
sb.append("</CreateTime><MsgType><![CDATA[text]]></MsgType><Content><![CDATA[");
sb.append(content);
sb.append("]]></Content><FuncFlag>0</FuncFlag></xml>");
return sb.toString();
}
}

XML配置

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <servlet>
<description>This is the description of my J2EE component</description>
<display-name>This is the display name of my J2EE component</display-name>
<servlet-name>WechatServlet</servlet-name>
<servlet-class>demo.servlet.WechatServlet</servlet-class>
</servlet>

<servlet-mapping>
<servlet-name>WechatServlet</servlet-name>
<url-pattern>/wechat</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>

完整项目代码下载地址：http://download.csdn.net/detail/qq_35489188/9651529

接下来就可以使用百度BAE快速搭建免费微信公众平台后台服务器。

http://jingyan.baidu.com/article/fec4bce27bfd19f2608d8b7e.html

1.完成到第三步创建好订单就行了



2.圆圈位置点击复制svn地址

3.myeclipe使用svn教程http://www.cnblogs.com/xdp-gacl/p/3497016.html

4..使用SVN检出我们在BAE上创建的项目,SVN–>从SVN检出项目–>Next–>选择使用现有的资源库位置–>选择我们的资源库,一路next,最后按下图操作,项目名称不用改(后面直接替换该工程下面的ROOT.war上传到BAE即可,还可以把我们的工程命名为与在BAE上一直的名)

注意是SVN账号密码是百度云的账号密码



之后Next–>Finish即可,这样我们就得到了在BAE上默认的工程,该工程下面有两个文件



5.把写好的微信工程发布到BAE的步骤:

1).右键写好的微信工程(注意不是从BAE上检出的微信工程,而是自己在Eclipse上创建的和BAE上同名的微信工程)–>Export–>WAR file,接下来按下图操作,注意war包需命名为ROOT.war,因为我们从BAE上检出的项目下就是ROOT.war,发布的时候直接替换咱们检出的工程下面的ROOT.war就可以了



6.发布微信工程到BAE,删除下面的ROOT.war包,把我们刚导出的微信工程的ROOT.war包放到该工程下,提交该工程到BAE即可,具体提交方法:右键点击该工程–>Team–>提交即可,

7.打开百度云管理中心，点击红圈的快捷发布即可



接下来需要申请微信公众号，目前我们可以用测试号进行测试,开始开发–>接口测试帐号申请

http://mp.weixin.qq.com/wiki/home/index.html

注意此处token需与之前项目的token一致，URL为项目域名+xml配置的Mapping路径



接下来就可以扫码测试啦！！！