主要是要做好私钥公钥，

然后公钥保存在企业微信后台

私钥保存在解密的程序中，

然后进行二次解密就可以了

int seq = Integer.parseInt(args[1]);

int limit = Integer.parseInt(args[2]);

long slice = Finance.NewSlice();

ret = Finance.GetChatData(sdk, seq, limit, args[3], args[4], Integer.parseInt(args[5]), slice);

if (ret != 0) {

    System.out.println("getchatdata ret " + ret);

    return;

}

String text = Finance.GetContentFromSlice(slice);

System.out.println(“getchatdata :”+ text);

WechatResponse res = (WechatResponse)JSON.parseObject(text, WechatResponse.class);

if(res.getErrcode().equals(“0”)){

List chatdataList = res.getChatdata();

  int maxNum = chatdataList.size();

      for (int i = 0; i < maxNum; i++) {

      JSONObject chatdataitem = (JSONObject)chatdataList.get(i);

    System.out.println(“seq :”+ chatdataitem.get(“seq”)+" msgid:"+chatdataitem.get(“msgid”));

    String encrypt_random_key = chatdataitem.getString(“encrypt_random_key”);

    String publickey_ver = chatdataitem.getString(“publickey_ver”);

    String priKey = getPrivaKey(publickey_ver);

    String key = getDecriptKey(encrypt_random_key,priKey);

    long msg = Finance.NewSlice();

    int ret1 =  Finance.DecryptData(sdk,key,chatdataitem.getString(“encrypt_chat_msg”), msg);

    String content = Finance.GetContentFromSlice(msg);

		System.out.println("decrypt ret:" + ret1 + " msg:" + content);

		JSONObject chatmsg = JSON.parseObject(content);

		System.out.println("action:" + chatmsg.getString("action") + " msgtype:" + chatmsg.getString("msgtype"));

		Finance.FreeSlice(msg);

      }

}

通过开发，已经可以商用了，服务了好几个客户了

实现了多线程秒拉取机制

实现了可视化分级授权管理。

截图如下