微信公众号之微信JS

微信JS-SDK说明文档：

https://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1421141115

根据微信说明文档步骤：（1）绑定域名[略]（2)引入js文件[略]

（3）通过config接口注入权限验证配置：

　　　　　　　　　　页面代码：

后台获取jssdk配置信息：

    @RequestMapping(value = "/jssdk" , method = {RequestMethod.POST })
   @ResponseBody
   public String JSSDK_config(
            @RequestParam(value = "url", required = true) String url) {
        try {
            System.out.println(url);
            Map<String, String> configMap = WeixinUtil.jsSdk(url);
            String data = JSON.toJSONString(configMap);
            return data;
        } catch (Exception e) {
           LOGGER.error("get jsconfig is error.");
        }
       return null;

    }

/**
   * weixinUtil中前端页面需要的配置信息
   * @param url
   * @return
   * @throws Exception
   */
   public static HashMap<String, String> jsSdk(String url) throws Exception{
       long times = System.currentTimeMillis();
       String timestamp = String.valueOf(times);
       String nonce_str = create_nonce_str();
       String string1 = "jsapi_ticket=" + TokenThread.jsapi_ticket + "&noncestr=" + nonce_str
                   + "&timestamp=" + timestamp + "&url=" + url;
       MessageDigest digest = MessageDigest.getInstance("SHA-1");
       digest.reset();
       digest.update(string1.getBytes("UTF-8"));
       String signature = byteToHex(digest.digest());
       HashMap<String, String> jssdk=new HashMap<String, String>();
       jssdk.put("appId", PropertiesUtil.getProperty("APPID"));
       jssdk.put("timestamp", timestamp);
       jssdk.put("nonceStr", nonce_str);
       jssdk.put("signature", signature);
        return jssdk;
   }

配置成功后，调用上传图片接口：

　　　　　　　　　　　　　　　　　　　　HTML代码：

</form>

调用上传图片接口后，需要将此图片存到自己的图片服务器时，需要将mediaId即images.serverId提交给java后台接口，后台接口接收到mediId后，调用微信获取临时素材接口：

微信公众号之微信JS

public static void main(String[] args) throws Exception {
//       String token = TokenThread.accessToken.getToken();
       String requrl = "https://api.weixin.qq.com/cgi-bin/media/get?access_token=ACCESS_TOKEN&media_id=MEDIA_ID";
       String url = requrl.replace("ACCESS_TOKEN", "HkAKN1zhEhIJvJ2iFHSxKBxD2i86IGe2lVVirE7iDFsSX3PeN-0mJ1wF4mTDP8Dibkv2ievaDLXUlzz6pE2hJHJ4uc6OD-jnTbsmDL1PyrFycpCMgQZ-yMW5eMepYkK1HFObACALJS").replace("MEDIA_ID", "iLXQnxsZYqjij_F3uwYMKXGM7ugE76yYkGZSxTIDCmY5ARujVBxe_9dEZUH80bRa");

       InputStream inputStream = null;
        HttpURLConnection httpURLConnection = null;
            URL u = new URL(url);//创建的URL
            httpURLConnection = (HttpURLConnection) u.openConnection();//打开链接
            httpURLConnection.setConnectTimeout(3000);//设置网络链接超时时间，3秒，链接失败后重新链接
            httpURLConnection.setDoInput(true);//打开输入流
            httpURLConnection.setRequestMethod("GET");//表示本次Http请求是GET方式
            int responseCode = httpURLConnection.getResponseCode();//获取返回码
            if (responseCode == 200) {//成功为200
                //从服务器获得一个输入流
                inputStream = httpURLConnection.getInputStream();
            }

            byte[] data = new byte[1024];
            int len = 0;
            FileOutputStream fio = null;

            try {
               fio = new FileOutputStream("D:\\demo.jpg");
               while ((len = inputStream.read(data)) != -1) {
                   fio.write(data, 0, len);
                   }
           } catch (Exception e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
           }finally{
               if (inputStream != null) {
                   try {
                   inputStream.close();
                   } catch (IOException e) {
                   // TODO Auto-generated catch block
                   e.printStackTrace();
                   }
                   }
                   if (fio != null) {
                   try {
                   fio.close();
                   } catch (IOException e) {
                   // TODO Auto-generated catch block
                   e.printStackTrace();
                   }
                   }
           }
    }

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微信公众号之微信JS

微信JS-SDK说明文档：

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