java对接微信开发模式的代码

摘要: java对接微信后台

package com.lee.servlet;import java.io.IOException;import java.io.PrintWriter;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import com.lee.util.CheckUtils;public class WeixinServlet extends HttpServlet{@Overrideprotected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {// TODO Auto-generated method stubString signature =req.getParameter("signature");String timestamp =req.getParameter("timestamp");String nonce =req.getParameter("nonce");String echostr=req.getParameter("echostr");PrintWriter out = resp.getWriter();out.println(echostr);}@Overrideprotected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {// TODO Auto-generated method stubsuper.doPost(req, resp);}}/**类似php的代码接入/*package com.lee.util;import java.lang.reflect.Array;import java.security.MessageDigest;import java.util.Arrays;public class CheckUtils {public static final String token = "E_40257";public static boolean checkSignature(String signature,String timestamp,String nonce){StringBuffer buffer = new StringBuffer();String[] arr = new String[]{token,timestamp,nonce};Arrays.sort(arr);for(int i=0;i<arr.length;i++){buffer.append(arr[i]);}String temp=getSha1(buffer.toString());return temp.equals(signature);}public static String getSha1(String str){if (null == str || 0 == str.length()){return null;}char[] hexDigits = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9','a', 'b', 'c', 'd', 'e', 'f'};try {MessageDigest mdTemp = MessageDigest.getInstance("SHA1");mdTemp.update(str.getBytes("UTF-8"));byte[] md = mdTemp.digest();int j = md.length;char[] buf = new char[j * 2];int k = 0;for (int i = 0; i < j; i++) {byte byte0 = md[i];buf[k++] = hexDigits[byte0 >>> 4 & 0xf];buf[k++] = hexDigits[byte0 & 0xf];}return new String(buf);} catch (Exception e) {return null;}}}web.xml<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0"><display-name>weixin</display-name><servlet><servlet-name>weixin</servlet-name><servlet-class>com.lee.servlet.WeixinServlet</servlet-class></servlet><servlet-mapping><servlet-name>weixin</servlet-name><url-pattern>/wx.do</url-pattern></servlet-mapping></web-app>