Java后台推送告警信息到钉钉

ゞ浴缸里的玫瑰 2023-10-06 18:26 51阅读 0赞

### Java后台推送告警信息到钉钉 ###

参考于：[Java后台推送告警信息到钉钉（工具类-可直接使用）][Java_-]

#### 文章目录 ####

*   *  Java后台推送告警信息到钉钉
     *   *  在【群设置】【智能群助手】【添加机器人】添加一个【自定义机器人】
         *  在pom.xml中添加依赖
         *  代码
         *  测试

人数要大于等于三人，一般需要在电脑端操作，下面添加机器人也是。

#### 在【群设置】【智能群助手】【添加机器人】添加一个【自定义机器人】 ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0NzA5OTkw_size_16_color_FFFFFF_t_70]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0NzA5OTkw_size_16_color_FFFFFF_t_70 1]  
注意：这里secret有很长，全选是可以复制的。

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0NzA5OTkw_size_16_color_FFFFFF_t_70 2]

#### 在pom.xml中添加依赖 ####

<dependency>
       <groupId>com.squareup.okhttp3</groupId>
       <artifactId>okhttp</artifactId>
       <version>3.12.6</version>
    </dependency>
    
    <dependency>
       <groupId>org.projectlombok</groupId>
       <artifactId>lombok</artifactId>
       <version>1.18.6</version>
    </dependency>
    
    <dependency>
    	<groupId>org.apache.commons</groupId>
    	<artifactId>commons-lang3</artifactId>
    </dependency>
    
    <dependency>
    	<groupId>commons-codec</groupId>
    	<artifactId>commons-codec</artifactId>
    </dependency>
    
    <dependency>
    	<groupId>com.alibaba</groupId>
    	<artifactId>fastjson</artifactId>
    </dependency>

#### 代码 ####

@Slf4j
    public class DingTalkUtil {
        
    
        private static OkHttpClient mClient;
        private static String url;
    
        //初始化客户端
        static {
        
            OkHttpClient.Builder builder = new OkHttpClient.Builder();
            builder.connectTimeout(10L, TimeUnit.SECONDS);
            builder.readTimeout(10L, TimeUnit.SECONDS);
            Dispatcher dispatcher = new Dispatcher();
            dispatcher.setMaxRequestsPerHost(200);
            dispatcher.setMaxRequests(200);
            builder.dispatcher(dispatcher);
            mClient = builder.build();
            try {
        
                url = getSign();
            } catch (Exception e) {
        
                log.error("k8s节点出现问题，调用钉钉API进行报警，获取签名失败！");
                e.printStackTrace();
            }
        }
    
        /**
         * 通用 POST 请求方法  依赖 OKhttp3
         * @param message 所要发送的消息
         * @return 发送状态回执
         */
        public static String postWithJson(String message) {
        
            JSONObject jsonObject = new JSONObject();
            //固定参数
            jsonObject.put("msgtype", "text");
            JSONObject content = new JSONObject();
            //此处message是你想要发送到钉钉的信息
            content.put("content", message);
            jsonObject.put("text", content);
            RequestBody body = RequestBody.create(
                    MediaType.parse("application/json; charset=utf-8"), jsonObject.toJSONString());
            Request request = new Request.Builder().url(url).post(body).build();
            try {
        
                Response response = mClient.newCall(request).execute();
                if (response.body() != null) {
        
                    return response.body().string();
                }
            } catch (IOException e) {
        
                log.error("k8s节点出现问题，调用钉钉API进行报警，消息发送失败！");
                e.printStackTrace();
            }
            return null;
        }
    
        /**
         * 获取签名
         * @return 返回签名
         */
        private static String getSign() throws Exception {
        
            String baseUrl = "https://oapi.dingtalk.com/robot/send?access_token=";
            String token = "a28abafca1eda791b2b09bf8a7";
            String secret = "SEC09fedac8a866be756225b9b1b";
            long timestamp = System.currentTimeMillis();
            String stringToSign = timestamp + "\n" + secret;
            // MAC加密算法
            Mac mac = Mac.getInstance("HmacSHA256");
            mac.init(new SecretKeySpec(secret.getBytes(StandardCharsets.UTF_8), "HmacSHA256"));
            byte[] signData = mac.doFinal(stringToSign.getBytes(StandardCharsets.UTF_8));
            return baseUrl + token + "&timestamp=" + timestamp + "&sign=" +
                    URLEncoder.encode(new String(Base64.encodeBase64(signData)), "UTF-8");
        }
    
    }

#### 测试 ####

执行以下代码：

public class Test {
        
    
        public static void main(String[] args) {
        
            String message = "this is a test";
            String res = DingTalkUtil.postWithJson(message);
            System.out.println(res);
        }
    }

打印信息如下图：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0NzA5OTkw_size_16_color_FFFFFF_t_70 3]

钉钉群接收到的消息如下图：  
![在这里插入图片描述][20210713165707554.png]

[Java_-]: https://www.tqwba.com/x_d/jishu/280166.html
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0NzA5OTkw_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20210713164709855.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0NzA5OTkw,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0NzA5OTkw_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20210713164724239.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0NzA5OTkw,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0NzA5OTkw_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/2021071316475280.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0NzA5OTkw,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0NzA5OTkw_size_16_color_FFFFFF_t_70 3]: https://img-blog.csdnimg.cn/20210713165638415.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0NzA5OTkw,size_16,color_FFFFFF,t_70
[20210713165707554.png]: https://img-blog.csdnimg.cn/20210713165707554.png