JAVA微信开发新手必看的接入指南介绍

这篇文章主要阐述如何搭建一个微信开发平台。古人云：“磨刀不负砍才工”。我们开发应用也需要准备一些必要的条件。

准备工作

1. 下载 Jdk1.7 安装

2. 下载 Tomcat 7.0

3. 下载 Myeclipse 6.5

4. 下载 Json-lib第三方jar .

1. 申请一个公网IP地址，发布自己的应用。

例如： 192.168.1.102

2. 打开myeclipse 创建一个工程

如下图所示：

JAVA实现类 ：WeixinServlet

package com.wx.servlet;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Arrays;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import net.sf.json.JSONObject;
import net.sf.json.xml.XMLSerializer;
 
/**
 * @author haibing.xiao
 * @since jdk1.6
 * @version 1.0
 */
public class WeixinServlet extends HttpServlet{
	private Logger log =Logger.getLogger(this.getClass().getName());
	private static final long serialVersiOnUID= 1L;
	private   String Token;
	private   String echostr;
	@Override
	protected void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		 connect(request,response);
	}
	@Override
	protected void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		message(request,response);
	}
	 
	
	/**
	 *@author haibing.xiao
	 *@return  
	 *@exception 
	 *@param
	 * 
	 * 
接入连接生效验证
	 */
	private void connect(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException{
		log.info("RemoteAddr: "+ request.getRemoteAddr());
		log.info("QueryString: "+ request.getQueryString());
		 if(!accessing(request, response)){
			 log.info("服务器接入失败.......");
			 return ;
		 }
		String echostr=getEchostr();
		if(echostr!=null && !"".equals(echostr)){
				log.info("服务器接入生效..........");
				response.getWriter().print(echostr);//完成相互认证
		}
	}
	/**
	 * @author haibing.xiao
	 * Date 2013-05-29
	 * @return boolean
	 * @exception ServletException, IOException
	 * @param
	 *
	 *
用来接收微信公众平台的验证
 
	 */
	private boolean accessing(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {
		String signature = request.getParameter("signature");
		String timestamp = request.getParameter("timestamp");
		String nOnce= request.getParameter("nonce");
		String echostr = request.getParameter("echostr");
		if( isEmpty(signature)){
			return false;
		}
		if(isEmpty(timestamp)){
			return false;
		}
		if(isEmpty(nonce)){
			return false;
		}
		if(isEmpty(echostr)){
			return false;
		}
		String[] ArrTmp = { Token, timestamp, nonce };
		Arrays.sort(ArrTmp);
		StringBuffer sb = new StringBuffer();
		for (int i = 0; i XML组装组件

	 */
	 private void message(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException{
		 
			InputStream is = request.getInputStream();
			// 取HTTP请求流长度
			int size = request.getContentLength();
			// 用于缓存每次读取的数据
			byte[] buffer = new byte[size];
			// 用于存放结果的数组
			byte[] xmldataByte = new byte[size];
			int count = 0;
			int rbyte = 0;
			// 循环读取
			while (count 业务转发组件

	 * 
	 */
	  private void  manageMessage(String requestStr,HttpServletRequest request,HttpServletResponse response)throws ServletException,IOException{
		    
		    String responseStr;
		   
			try {
				 XMLSerializer xmlSerializer=new XMLSerializer();
				 JSONObject jsOnObject=(JSONObject) xmlSerializer.read(requestStr);
				 String event =jsonObject.getString("Event");
				 String msgtype =jsonObject.getString("MsgType");
				 if("CLICK".equals(event) && "event".equals(msgtype)){ //菜单click事件
					 String eventkey =jsonObject.getString("EventKey");
					 if("hytd_001".equals(eventkey)){ // hytd_001 这是好友团队按钮的标志值
						 jsonObject.put("Content", "欢迎使用好友团队菜单click按钮.");
					 }
					
				 }
				 respOnseStr=creatRevertText(jsonObject);//创建XML
				 log.info("responseStr:"+responseStr);
				 OutputStream os =response.getOutputStream();
				 os.write(responseStr.getBytes("UTF-8"));
			}   catch (Exception e) {
				e.printStackTrace();
			}
			
	}
	private String creatRevertText(JSONObject jsonObject){
	    	StringBuffer revert =new StringBuffer();
	    	revert.append("");
	    	revert.append("");
	    	revert.append("");
	    	revert.append(""+jsonObject.get("CreateTime")+"");
	    	revert.append("");
	    	revert.append("");
	    	revert.append("0");
	    	revert.append("");
	    	return revert.toString();
	    }
	@Override
	public void init() throws ServletException {
		Token="test123";
	}
	 
	private boolean isEmpty(String str){
		return null ==str || "".equals(str) ? true :false;
	}
	private String trim(String str){
		return null !=str  ? str.trim() : str;
	}
	
}

4. 本地部署应用 访问http://localhost:端口号/上下文/wenxin

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