java微信公众号支付授权

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微信公众号支付需要进行授权

1、微信公众号授权

      (1)静默授权(用户看不到授权页面 ) scope=snsapi_base  获取不到微信用户基本信息

     (2)正常授权(弹出授权页面,需要用户同意授权) scope=snsapi_userinfo  可以获取微信用户的基本信息


      domain : 域名, redirect_uri必须是外网能够访问的地址,且必须是域名,不能是IP地址

      gotoUrl  : 授权之后要跳转的页面

    @RequestMapping("/auth")    public void auth(String gotoUrl, HttpServletResponse response) throws Exception {        // 共账号及商户相关参数        String backUri = domain + "/wx/redirectWithOpenId?gotoUrl=" + gotoUrl;        // URLEncoder.encode 后可以在backUri 的url里面获取传递的所有参数        backUri = URLEncoder.encode(backUri);        logger.debug("********************backUri:" + backUri);        // scope 参数视各自需求而定,这里用scope=snsapi_userinfo 弹出授权页面直接授权目的获取统一支付接口的openid以及网页授权accesstoken   snsapi_base        String url = "https://open.weixin.qq.com/connect/oauth2/authorize?"                + "appid="                + appid                + "&redirect_uri="                + backUri                + "&response_type=code&scope=snsapi_base&state=1#wechat_redirect";        response.sendRedirect(url);    }


2、授权 获取openId 以及 access_token

    @RequestMapping("/redirectWithOpenId")    public ModelAndView redirectWithOpenId(String code, String gotoUrl,HttpServletRequest request) {        Integer userId = SystemHelper.currUserId();        ModelAndView mv = new ModelAndView();        String openId = "";        String access_token = "";        //获取openid 以及 网页授权accesstoken        String URL = "https://api.weixin.qq.com/sns/oauth2/access_token?appid="                + appid + "&secret=" + appsecret + "&code=" + code                + "&grant_type=authorization_code";        JSONObject jsonObject = HttpClientUtil.httpsRequest(URL, "GET", null);        if (null != jsonObject) {            //获取openid            openId = jsonObject.getString("openid");            //获取网页授权accesstoken            access_token = jsonObject.getString("access_token");            logger.debug("********************openId" + openId+",access_token="+access_token);        }//        //获取用户信息 若scope=snsapi_base 静默授权,不能获取到用户基本信息//        if (StringUtils.isNotEmpty(openId) && StringUtils.isNoneBlank(access_token)) {//            String InfoUrl = "https://api.weixin.qq.com/sns/userinfo?access_token="//                    +access_token+"&openid="+openId+"&lang=zh_CN";//            JSONObject jsonInfo = HttpClientUtil.httpsRequest(InfoUrl, "GET", null);//            logger.debug(InfoUrl+"********************jsonInfo\n" + jsonInfo);//            if(null != jsonInfo){//                WxAccount wxAccount = JSON.parseObject(jsonInfo.toJSONString(), WxAccount.class);//                //保存用户的基本信息//            }//        }        request.getSession().setAttribute("openId",openId);//保存openId到session中        mv.setViewName("redirect:" + gotoUrl);        mv.addObject("openId", openId);        return mv;


3、工具类 HttpClientUtil 

 /**     * 发送https请求     *     * @param requestUrl     *            请求地址     * @param requestMethod     *            请求方式(GET、POST)     * @param outputStr     *            提交的数据     * @return JSONObject(通过JSONObject.get(key)的方式获取json对象的属性值)     */    public static JSONObject httpsRequest(String requestUrl,                                          String requestMethod, String outputStr) {        JSONObject jsonObject = null;        try {            // 创建SSLContext对象,并使用我们指定的信任管理器初始化            TrustManager[] tm = { new MyX509TrustManager() };            SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");            sslContext.init(null, tm, new java.security.SecureRandom());            // 从上述SSLContext对象中得到SSLSocketFactory对象            SSLSocketFactory ssf = sslContext.getSocketFactory();            URL url = new URL(null,requestUrl,new sun.net.www.protocol.https.Handler());            HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();            conn.setSSLSocketFactory(ssf);            conn.setDoOutput(true);            conn.setDoInput(true);            conn.setUseCaches(false);            // 设置请求方式(GET/POST)            conn.setRequestMethod(requestMethod);            // 当outputStr不为null时向输出流写数据            if (null != outputStr) {                OutputStream outputStream = conn.getOutputStream();                // 注意编码格式                outputStream.write(outputStr.getBytes("UTF-8"));                outputStream.close();            }            // 从输入流读取返回内容            InputStream inputStream = conn.getInputStream();            InputStreamReader inputStreamReader = new InputStreamReader(                    inputStream, "utf-8");            BufferedReader bufferedReader = new BufferedReader(                    inputStreamReader);            String str = null;            StringBuffer buffer = new StringBuffer();            while ((str = bufferedReader.readLine()) != null) {                buffer.append(str);            }            // 释放资源            bufferedReader.close();            inputStreamReader.close();            inputStream.close();            inputStream = null;            conn.disconnect();            jsonObject = JSONObject.parseObject(buffer.toString());        } catch (ConnectException ce) {        } catch (Exception e) {            e.printStackTrace();        }        return jsonObject;    }





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