微信公众号开发配置

前提：当从公众号开发页面访问自定义服务器时，服务器有反应。 此时页面会弹出配置失败，要想配置成功，必须通过验证 返回 随机码。

配置是访问doGet();

    //wechat请求会带如下参数

    public void doGet(HttpServletRequest request, HttpServletResponse response)

    String signture = request.getParameter("signature");

    String timestamp = request.getParameter("timestamp");

    String nonce = request.getParameter("nonce");

    String echostr = request.getParameter("echostr");

    /*

    System.out.println("时间戳timestamp"+request.getParameter("timestamp"));

    System.out.println("微信加密签名signature"+request.getParameter("signature"));

    System.out.println("随机数nonce"+request.getParameter("nonce"));

    System.out.println("随机字符串echostr"+request.getParameter("echostr"));

    */

    //调用该方法，验证签名是否一致

    boolean flag = MyService.wechatCheck(signture, timestamp, nonce);

    if(flag){

        //返回随机字符串，wechat服务端接收到随机字符串机会认证通过

        System.out.println("success");

        response.getWriter().print(echostr);

    }else{

        System.out.println("fail");

    }

        

        

          //此token必须与wechat端的token一致

        static final String TOKEN = "lz";

        public static Boolean wechatCheck(String signture , String timestamp , String nonce){

                

                //将token\nance\timestamp进行排序、合并为一个字符串，在调用sha1加密

            String[] strs = {TOKEN , nonce , timestamp};

            Arrays.sort(strs);

            String str = strs[0] + strs[1] +strs[2];

            String mySign = sha1(str);

     

            //判断加密对象是否与signture一致

            return mySign.equals(signture);

        }

        private static String sha1(String str) {

            StringBuilder sb = new StringBuilder();

            try {

                //获取加密对象

                MessageDigest md = MessageDigest.getInstance("sha1");

                //加密

                byte[] digest = md.digest(str.getBytes());

                char[] chars = {'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'};

                    

                for(byte b:digest){

                    sb.append(chars[(b>>4)&15]);

                    sb.append(chars[b&15]);

                }

            } catch (NoSuchAlgorithmException e) {

                e.printStackTrace();

            }

                

            return sb.toString();