发送webhook到飞书机器人

使用java发送http post到自定义机器人

1. 计算签名校验，参考官方文档的SignDemo.java，自定义一个签名函数

privatestaticStringgenSign(String secret,long timestamp)throwsNoSuchAlgorithmException,InvalidKeyException{//把timestamp+"\n"+密钥当做签名字符串String stringToSign = timestamp +"\n"+ secret;//使用HmacSHA256算法计算签名Mac mac =Mac.getInstance("HmacSHA256"); mac.init(newSecretKeySpec(stringToSign.getBytes(StandardCharsets.UTF_8),"HmacSHA256"));byte[] signData = mac.doFinal(newbyte[]{});returnnewString(Base64.encodeBase64(signData));}

2. 计算时间戳
   需要注意的是，时间戳是以秒为单位的，并且要配置时区，不可直接使用System.currentTimeMillis()/1000来计算秒值

long seconds =LocalDateTime.now().atZone(ZoneId.systemDefault()).toInstant().getEpochSecond();

3. 创建富文本消息
   参考官方文档 发送富文本消息
   • 创建一个content对象

privatestaticJSONObjectcreateOuterContent(String title,String message,String detail,String startTime,String endTime){JSONObject result =newJSONObject(); result.put("post",createPostJsonObject(title, message, detail, startTime, endTime));return result;}privatestaticJSONObjectcreatePostJsonObject(String title,String message,String detail,String startTime,String endTime){JSONObject result =newJSONObject(); result.put("zh_cn",createZhCNJsonObject(title, message, detail, startTime, endTime));return result;}privatestaticJSONObjectcreateZhCNJsonObject(String title,String message,String detail,String startTime,String endTime){JSONObject result =newJSONObject(); result.put("title", title); result.put("content",createContentList(message, detail, startTime, endTime));return result;}privatestaticJSONArraycreateContentList(String message,String detail,String startTime,String endTime){JSONArray result =newJSONArray();JSONArray item1 =newJSONArray(); item1.add(createInnerHeadContent("message")); item1.add(createInnerTextContent(message)); result.add(item1);JSONArray item2 =newJSONArray(); item2.add(createInnerHeadContent("detail")); item2.add(createInnerTextContent(detail)); result.add(item2);JSONArray item3 =newJSONArray(); item3.add(createInnerHeadContent("startTime")); item3.add(createInnerTextContent(startTime)); result.add(item3);JSONArray item4 =newJSONArray(); item4.add(createInnerHeadContent("endTime")); item4.add(createInnerTextContent(endTime)); result.add(item4);return result;}privatestaticJSONObjectcreateInnerHeadContent(String tag){JSONObject result =newJSONObject(); result.put("tag","text"); result.put("text", tag+": ");return result;}privatestaticJSONObjectcreateInnerTextContent(String text){JSONObject result =newJSONObject(); result.put("tag","text"); result.put("text", text);return result;}

• 再创建完整的json对象

完整代码如下

java版本

publicclassFeishuWebhook{privatestaticfinalLogger logger =LoggerFactory.getLogger(FeishuWebhook.class);publicstaticfinalStringDEFAULT_DATETIME_FORMATTER_STR="yyyy-MM-dd HH:mm:ss";publicstaticfinalDateTimeFormatterDEFAULT_DATETIME_FORMATTER=DateTimeFormatter.ofPattern(DEFAULT_DATETIME_FORMATTER_STR);publicstaticvoidsend(String url,String secret,AlertDO alertDO){ logger.info("FeishuWebhook.send, url:{}, alertDO={}", url, alertDO);JSONObject requestBody =createRequestBody(secret, alertDO); logger.info("requestBody:{}", requestBody);JSONObject result =HttpUtils.postForJsonObject(url,null,null, requestBody); logger.info("result:{}", result);}privatestaticStringgenSign(String secret,long timestamp)throwsNoSuchAlgorithmException,InvalidKeyException{//把timestamp+"\n"+密钥当做签名字符串String stringToSign = timestamp +"\n"+ secret;//使用HmacSHA256算法计算签名Mac mac =Mac.getInstance("HmacSHA256"); mac.init(newSecretKeySpec(stringToSign.getBytes(StandardCharsets.UTF_8),"HmacSHA256"));byte[] signData = mac.doFinal(newbyte[]{});returnnewString(Base64.encodeBase64(signData));}privatestaticJSONObjectcreateRequestBody(String secret,AlertDO alertDO){JSONObject requestBody =newJSONObject();long seconds =LocalDateTime.now().atZone(ZoneId.systemDefault()).toInstant().getEpochSecond(); logger.info("seconds：{}", seconds);// int seconds = 1734515343;try{String sign =genSign(secret, seconds); requestBody.put("timestamp", seconds); requestBody.put("sign", sign); requestBody.put("msg_type","post");String title ="通知";String message = alertDO.getMessage();String detail = alertDO.getDetail();String startTime =DEFAULT_DATETIME_FORMATTER.format(LocalDateTime.ofInstant(alertDO.getStartTime().toInstant(),ZoneId.systemDefault()));String endTime =DEFAULT_DATETIME_FORMATTER.format(LocalDateTime.ofInstant(alertDO.getEndTime().toInstant(),ZoneId.systemDefault())); requestBody.put("content",createOuterContent(title, message, detail, startTime, endTime));}catch(Exception e){ e.printStackTrace();}return requestBody;}privatestaticJSONObjectcreateOuterContent(String title,String message,String detail,String startTime,String endTime){JSONObject result =newJSONObject(); result.put("post",createPostJsonObject(title, message, detail, startTime, endTime));return result;}privatestaticJSONObjectcreatePostJsonObject(String title,String message,String detail,String startTime,String endTime){JSONObject result =newJSONObject(); result.put("zh_cn",createZhCNJsonObject(title, message, detail, startTime, endTime));return result;}privatestaticJSONObjectcreateZhCNJsonObject(String title,String message,String detail,String startTime,String endTime){JSONObject result =newJSONObject(); result.put("title", title); result.put("content",createContentList(message, detail, startTime, endTime));return result;}privatestaticJSONArraycreateContentList(String message,String detail,String startTime,String endTime){JSONArray result =newJSONArray();JSONArray item1 =newJSONArray(); item1.add(createInnerHeadContent("message")); item1.add(createInnerTextContent(message)); result.add(item1);JSONArray item2 =newJSONArray(); item2.add(createInnerHeadContent("detail")); item2.add(createInnerTextContent(detail)); result.add(item2);JSONArray item3 =newJSONArray(); item3.add(createInnerHeadContent("startTime")); item3.add(createInnerTextContent(startTime)); result.add(item3);JSONArray item4 =newJSONArray(); item4.add(createInnerHeadContent("endTime")); item4.add(createInnerTextContent(endTime)); result.add(item4);return result;}privatestaticJSONObjectcreateInnerHeadContent(String tag){JSONObject result =newJSONObject(); result.put("tag","text"); result.put("text", tag+": ");return result;}privatestaticJSONObjectcreateInnerTextContent(String text){JSONObject result =newJSONObject(); result.put("tag","text"); result.put("text", text);return result;}}

python版本
FeishuBotHypertextWithSecret.py

import base64 import hashlib import hmac from datetime import datetime import requests WEBHOOK_URL ="https://open.feishu.cn/open-apis/bot/v2/hook/xx" WEBHOOK_SECRET ="ssssssss"classLarkBot:def__init__(self, secret:str)->None:ifnot secret:raise ValueError("invalid secret key") self.secret = secret defgen_sign(self, timestamp:int)->str: string_to_sign ='{}\n{}'.format(timestamp, self.secret) hmac_code = hmac.new( string_to_sign.encode("utf-8"), digestmod=hashlib.sha256 ).digest() sign = base64.b64encode(hmac_code).decode('utf-8')return sign defsend(self)->None: timestamp =int(datetime.now().timestamp()) sign = self.gen_sign(timestamp) params ={"timestamp": timestamp,"sign": sign,"msg_type":"post","content":{"post":{"zh_cn":{"title":"项目更新通知","content":[[{"tag":"text","text":"项目有更新: "},{"tag":"a","text":"请查看","href":"http://www.example.com/"},{"tag":"at","user_id":"ou_18eac8********17ad4f02e8bbbb"}]]}}}} resp = requests.post(url=WEBHOOK_URL, json=params) resp.raise_for_status() result = resp.json()if result.get("code")and result["code"]!=0:print(result["msg"])returnprint("消息发送成功")defmain(): bot = LarkBot(secret=WEBHOOK_SECRET) bot.send()if __name__ =='__main__': main()

LarkBotWithoutSecret.py

from datetime import datetime import requests WEBHOOK_URL ="https://open.feishu.cn/open-apis/bot/v2/hook/sss"classLarkBot:defsend(self, content:str)->None: timestamp =int(datetime.now().timestamp()) params ={"timestamp": timestamp,"msg_type":"text","content":{"text": content},} resp = requests.post(url=WEBHOOK_URL, json=params) resp.raise_for_status() result = resp.json()if result.get("code")and result["code"]!=0:print(result["msg"])returnprint("消息发送成功")defmain(): bot = LarkBot() bot.send(content="我是一只高级鸽子！")if __name__ =='__main__': main()