最新整理出的微信分享后端接口实现的大致流程

微信分享后台接口简单实现

此接口大致的流程是：用户创建时间戳，随机字符串，当前需要分享的页面的url三个变量，接着将自己的appid和APPsecret作为请求参数获取access_token，再根据access_token获取jsapi_ticket, 并将获取的jsapi-ticket进行加密、校验以及自己创建的三个变量进行签名，注意签名过程案按照 key 值 ASCII 码升序排序封装成json格式的数据传送到前台JS页面，具体程序如下；public class WeiXinShareAction extends HttpServlet {private static final long serialVersionUID = 1L;private Integer main_count = 888;private String flag = "1";private Log logger = LogFactory.getLog(this.getClass());private String filePath = "/B.txt";protected void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {JsonObject jsonObject = new JsonObject();String ticket = null;String[] wxInfo = new String[] { "wx007344f87ae48300", "5442edc712b6846bdd1c058b7f2318fe" };WeiXinUtil wxu = new WeiXinUtil();String ticketResString;try {ticketResString = wxu.getShareJsapiTicket(wxInfo);if (StringUtils.isNotEmpty(ticketResString)) {JSONObject ticketJSONObject = JSONObject.fromObject(ticketResString);if (ticketJSONObject.getInt("errcode") == 0) {ticket = JSONObject.fromObject(ticketResString).getString("ticket");}}} catch (Exception e) {e.printStackTrace();}if (StringUtils.isEmpty(ticket)) {jsonObject.addProperty("errcode", 10002);jsonObject.addProperty("errmsg", "ticket_error");this.responseWrite(jsonObject.toString(), response);return;}String noncestr = this.createNonceStr();int timestamp = this.createTimestamp();String requestRefererURL = request.getHeader("referer");flag = request.getParameter("temp");logger.info("flag--------------" + flag);//这里是保存点击次数//没有数据库的情况下 保证服务重启后点击次数不清零//利用线程锁 使用IO流 对点击次数进行修改保存Thread_readFile thf4 = new Thread_readFile();thf4.start();logger.warn("requestRefererURL: " + requestRefererURL);String signature = this.createSignature(noncestr, ticket, timestamp, requestRefererURL);jsonObject.addProperty("countNum", main_count);//点击次数jsonObject.addProperty("errcode", 0);//jsonObject.addProperty("errmsg", "");//jsonObject.addProperty("wxuser", wxInfo[0]); // appIdjsonObject.addProperty("timestamp", timestamp);//时间戳jsonObject.addProperty("noncestr", noncestr);//随机字符串jsonObject.addProperty("signature", signature);//签名response.setHeader("Access-Control-Allow-Origin", "*");this.responseWrite(jsonObject.toString(), response);}private void responseWrite(String content, HttpServletResponse response) {try {response.setCharacterEncoding("utf-8");response.getWriter().write(content);} catch (Exception e) {logger.error("responseWrite error in WeiXinShareAction", e);}}}获取access_token;这里开发过程中要注意微信为了减轻对服务器的访问压力 限制了access_token每天的生成次数 以及使用时长；由于限制时长为7200s 于是做了一个判断 再生成一个token后的2小时用同一个token ；这里仅仅只是一个小接口 于是选择将 最近一次的生成时间 以及 token 存为静态变量，/*** 微信分享，获取access_token*/private String getWeiXinAccessToken(String[] wxInfo) throws Exception {//得到当前时间long current_time = System.currentTimeMillis();// 每次调用，判断expires_in是否过期，如果token时间超时，重新获取，expires_in有效期为7200if ((current_time - last_time) / 1000 >= 7200) {logger.info("第一次访问"+current_time);logger.info("(current_time - last_time) / 1000===="+(current_time - last_time) / 1000);String url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" + wxInfo[0]+ "&secret=" + wxInfo[1];String result = this.httpReqExecute(url);this.logger.warn("from weixin api accessToken: " + result);try {last_time = current_time;if (StringUtils.isNotEmpty(result)) {//解析respContent，并获取其中的更新的key,accessToken = JSONObject.fromObject(result).getString("access_token");//保存access_tokenreturn accessToken;}} catch (Exception e) {logger.error("getAccessToken error in WeiXinShareAction", e);}}else{logger.info("第二次访问"+last_time);logger.info("(current_time - last_time) / 1000===="+(current_time - last_time) / 1000);logger.info("from weixin api accessToken:"+accessToken);return accessToken;}return null;}根据access_token获取jsapiTicket/*** 微信分享，获取jsapiTicket*/public String getShareJsapiTicket(String[] wxInfo) throws Exception {String access_Token = this.getWeiXinAccessToken(wxInfo);if (StringUtils.isEmpty(access_Token)) { // 获取 accessToken 失败//this.logger.warn(siteId + " accessToken is empty.");JsonObject jsonObject = new JsonObject();jsonObject.addProperty("errcode", "10000");jsonObject.addProperty("errmsg", "access_error");return jsonObject.toString();}String url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=" + access_Token + "&type=jsapi";String jsapiTicket = this.httpReqExecute(url);this.logger.warn(" from weixin api jsapiTicket is: " + jsapiTicket);if (StringUtils.isNotEmpty(jsapiTicket)) {return jsapiTicket;}return null;}Http远程调用private String httpReqExecute(String url) {String result = "";DefaultHttpClient httpclient = null;try {httpclient = new DefaultHttpClient();HttpPost httppost = new HttpPost(url);// 执行HttpResponse response = httpclient.execute(httppost);HttpEntity entity = response.getEntity();if (entity != null && response.getStatusLine().getStatusCode() == 200) {result = EntityUtils.toString(entity, "UTF-8");}} catch (Exception e) {logger.error(" WeiXinShareAction 调用微信 API 失败！", e);} finally {// 关闭连接，释放资源httpclient.getConnectionManager().shutdown();}return result;}返回成功 from weixin api accessToken: {"access_token":"12_9UgVn7tFVtvf_7r4Lq4V9W9-pQdZpqWxVjFsPoF3hv3J5_XfwQWqauj4n9-ZMikC1_oCp0IpBxjpZr-Ty8XzG8QMeV2QVukFz5_NP7kjAB05MX9msxRg0FlpAAMjonrrh5wxSEFfKHEc0_BDHFKjAFAXVA","expires_in":7200} from weixin api jsapiTicket is: {"errcode":0,"errmsg":"ok","ticket":"HoagFKDcsGMVCIY2vOjf9j_Us44Qhuo4KdgH5u8ewMjOCTUO44m1hKqgEsJYIyFR9HWrmmz-wrsb9KLdmpATRw","expires_in":7200}相关文章：

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