java代码结合钉钉机器人自动报警

前言超级简单:

首先在钉钉群设置

在这里插入图片描述

第一步:
添加依赖:

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<dependency>
<groupId>cn.hutool</groupId>
<artifactId>hutool-all</artifactId>
<version>4.3.1</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>20.0</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.8</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.51</version>
</dependency>
在这里插入代码片

第二步:
编写钉钉发送消息工具类

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package com.kongzhong.aw.autogift.dingding;

import cn.hutool.http.HttpUtil;
import com.alibaba.fastjson.JSON;
import com.google.common.collect.Maps;
import com.kongzhong.aw.autogift.param.BaseParam;
import org.apache.commons.codec.binary.Base64;

import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.time.Instant;
import java.util.List;
import java.util.Map;

/**
* @Description : 钉钉工具类
* @Author : caoxiya
* @Date: 2020-05-22 19:16
*/
public class DingUtil {

/**
* 给钉钉群发送消息方法
*
* @param content 消息内容
* @return
* @throws NoSuchAlgorithmException
* @throws UnsupportedEncodingException
* @throws InvalidKeyException
*/
public static String sendMsg(String content) throws NoSuchAlgorithmException, UnsupportedEncodingException, InvalidKeyException {
try {
//群机器人复制到的秘钥secret
//String secret = "SECc986f2d199370a58870e17d86f976e12f6dc31bb6e3d71e44efas0a538bb5278";
String secret = "你的秘钥secret";
//获取系统时间戳
long timestamp = Instant.now().toEpochMilli();
//拼接
String stringToSign = timestamp + "\n" + secret;
//使用HmacSHA256算法计算签名
Mac mac = Mac.getInstance("HmacSHA256");
mac.init(new SecretKeySpec(secret.getBytes("UTF-8"), "HmacSHA256"));
byte[] signData = mac.doFinal(stringToSign.getBytes("UTF-8"));
//进行Base64 encode 得到最后的sign，可以拼接进url里
String sign = URLEncoder.encode(new String(Base64.encodeBase64(signData)), "UTF-8");
//钉钉机器人地址（配置机器人的webhook）
String dingUrl = "https://oapi.dingtalk.com/robot/send?access_token=a99413dtd5524b651f289357ab84196fb2bbf13d2c0c925c1f1d2d1df89b74b3&timestamp=" + timestamp + "&sign=" + sign;

String result = HttpUtil.post(dingUrl, content);
return result;
} catch (Exception e) {
// log.error("钉钉推送消息出现异常");
return null;
}

}

/**
* @param content 内容
* @param isAtAll 是否@所有人如果写true mobileList失效
* @param mobileList @人的手机号
* @return
* @throws NoSuchAlgorithmException
* @throws InvalidKeyException
* @throws UnsupportedEncodingException
*/
public static String buildReqStr(String content, boolean isAtAll, List<String> mobileList) throws NoSuchAlgorithmException, InvalidKeyException, UnsupportedEncodingException {
//消息内容
Map<String, String> contentMap = Maps.newHashMap();
contentMap.put("content", content);
//通知人
Map<String, Object> atMap = Maps.newHashMap();
//1.是否通知所有人
atMap.put("isAtAll", isAtAll);
//2.通知具体人的手机号码列表
atMap.put("atMobiles", mobileList);
Map<String, Object> reqMap = Maps.newHashMap();
reqMap.put("msgtype", "text");
reqMap.put("text", contentMap);
reqMap.put("at", atMap);
String contens = JSON.toJSONString(reqMap);

String result = DingUtil.sendMsg(contens);
return result;
}

public static void main(String[] args) throws NoSuchAlgorithmException, InvalidKeyException, UnsupportedEncodingException {
try {
Integer i = null;
if (i < 1) {

}
}catch(Exception e){
DingUtil.buildReqStr("异常====>"+e.getMessage(), true, BaseParam.PHONELIST);
}

}
}