diff --git a/db/qywecahtpush.sql b/db/qywecahtpush.sql
index 856be1b..834ee77 100644
--- a/db/qywecahtpush.sql
+++ b/db/qywecahtpush.sql
@@ -35,3 +35,19 @@ CREATE TABLE api_setting(
 INSERT INTO api_setting(id,phone_number,access_token,msgtype,touser,agentid,enable_duplicate_check,duplicate_check_interval)
 VALUES (1,'18281561650','gKGCDSgWV82XbU0H','textcard','@all',1000002,1,1800);
 
+
+CREATE TABLE device_info (
+        id INT PRIMARY KEY AUTO_INCREMENT,
+        is_Monitored INT,
+        time_out_period BIGINT,
+        device_brand VARCHAR(255),
+        android_version VARCHAR(255),
+        sn VARCHAR(255),
+        device_model VARCHAR(255),
+        last_online_time BIGINT,
+        status INT
+);
+
+INSERT INTO device_info (is_monitored, time_out_period, device_brand, android_version, sn, device_model, last_online_time, status) VALUES
+                    (1, 600, 'google', 'Android 10', UNIX_TIMESTAMP(), 1),
+
diff --git a/src/main/java/com/kimgo/wepush/WePushApplication.java b/src/main/java/com/kimgo/wepush/WePushApplication.java
index 55b3fe0..407717c 100644
--- a/src/main/java/com/kimgo/wepush/WePushApplication.java
+++ b/src/main/java/com/kimgo/wepush/WePushApplication.java
@@ -3,8 +3,10 @@ package com.kimgo.wepush;
 import org.mybatis.spring.annotation.MapperScan;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.scheduling.annotation.EnableScheduling;
 
 @SpringBootApplication
+@EnableScheduling
 @MapperScan("com.kimgo.wepush.mapper")
 public class WePushApplication {
 
diff --git a/src/main/java/com/kimgo/wepush/controller/HeartbeatController.java b/src/main/java/com/kimgo/wepush/controller/HeartbeatController.java
new file mode 100644
index 0000000..05c1515
--- /dev/null
+++ b/src/main/java/com/kimgo/wepush/controller/HeartbeatController.java
@@ -0,0 +1,32 @@
+package com.kimgo.wepush.controller;
+
+import com.kimgo.wepush.model.CallInfo;
+import com.kimgo.wepush.model.DeviceInfo;
+import com.kimgo.wepush.response.ServerResponseEntity;
+import com.kimgo.wepush.service.HeartBeatService;
+import jakarta.validation.Valid;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestHeader;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class HeartbeatController {
+    @Autowired
+    private HeartBeatService heartBeatService;
+
+    @PostMapping("/heartbeat")
+    public ServerResponseEntity receiveHeartbeat(@RequestHeader("accessToken") String accessToken,
+                                                 @RequestBody @Valid DeviceInfo deviceInfo) {
+        // 处理心跳请求
+        // 更新客户端的“最后活跃时间”
+        if(accessToken == null){
+            return ServerResponseEntity.fail("accessToken cannot be empty.");
+        }
+        if (deviceInfo == null || deviceInfo.hasInvalidFields()){
+            return ServerResponseEntity.fail("json body value error.");
+        }
+        return heartBeatService.handleHeartbeatSignal(accessToken,deviceInfo);
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/com/kimgo/wepush/mapper/ApiSettingMapper.java b/src/main/java/com/kimgo/wepush/mapper/ApiSettingMapper.java
index 14e8ea8..0ef666c 100644
--- a/src/main/java/com/kimgo/wepush/mapper/ApiSettingMapper.java
+++ b/src/main/java/com/kimgo/wepush/mapper/ApiSettingMapper.java
@@ -2,6 +2,7 @@ package com.kimgo.wepush.mapper;
 
 import com.kimgo.wepush.model.ApiSetting;
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import org.apache.ibatis.annotations.Mapper;
 
 /**
 * @author wangsiyuan
@@ -9,6 +10,7 @@ import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 * @createDate 2023-12-05 01:25:35
 * @Entity com.kimgo.wepush.model.ApiSetting
 */
+@Mapper
 public interface ApiSettingMapper extends BaseMapper<ApiSetting> {
 
 }
diff --git a/src/main/java/com/kimgo/wepush/mapper/DeviceInfoDAOMapper.java b/src/main/java/com/kimgo/wepush/mapper/DeviceInfoDAOMapper.java
new file mode 100644
index 0000000..bf69f58
--- /dev/null
+++ b/src/main/java/com/kimgo/wepush/mapper/DeviceInfoDAOMapper.java
@@ -0,0 +1,10 @@
+package com.kimgo.wepush.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.kimgo.wepush.model.ApiSetting;
+import com.kimgo.wepush.model.DeviceInfoDAO;
+import org.apache.ibatis.annotations.Mapper;
+
+@Mapper
+public interface  DeviceInfoDAOMapper extends BaseMapper<DeviceInfoDAO> {
+}
\ No newline at end of file
diff --git a/src/main/java/com/kimgo/wepush/mapper/QyWeChatAppInfoMapper.java b/src/main/java/com/kimgo/wepush/mapper/QyWeChatAppInfoMapper.java
index f70f9a1..0b934e0 100644
--- a/src/main/java/com/kimgo/wepush/mapper/QyWeChatAppInfoMapper.java
+++ b/src/main/java/com/kimgo/wepush/mapper/QyWeChatAppInfoMapper.java
@@ -2,6 +2,8 @@ package com.kimgo.wepush.mapper;
 
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.kimgo.wepush.model.QyWeChatAppInfo;
+import org.apache.ibatis.annotations.Mapper;
 
+@Mapper
 public interface QyWeChatAppInfoMapper extends BaseMapper<QyWeChatAppInfo> {
 }
diff --git a/src/main/java/com/kimgo/wepush/mapper/QyWeChatURLMapper.java b/src/main/java/com/kimgo/wepush/mapper/QyWeChatURLMapper.java
index 52b4e3e..2bc620f 100644
--- a/src/main/java/com/kimgo/wepush/mapper/QyWeChatURLMapper.java
+++ b/src/main/java/com/kimgo/wepush/mapper/QyWeChatURLMapper.java
@@ -4,5 +4,6 @@ import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.kimgo.wepush.model.QyWeChatURL;
 import org.apache.ibatis.annotations.Mapper;
 
+@Mapper
 public interface QyWeChatURLMapper extends BaseMapper<QyWeChatURL> {
 }
diff --git a/src/main/java/com/kimgo/wepush/model/DeviceInfo.java b/src/main/java/com/kimgo/wepush/model/DeviceInfo.java
new file mode 100644
index 0000000..d58a634
--- /dev/null
+++ b/src/main/java/com/kimgo/wepush/model/DeviceInfo.java
@@ -0,0 +1,24 @@
+package com.kimgo.wepush.model;
+
+import lombok.Data;
+
+@Data
+public class DeviceInfo {
+    private String androidVersion;
+    private String deviceBrand;
+    private String SN;
+    private String deviceModel;
+    public boolean hasInvalidFields() {
+        return isNullOrInvalid(androidVersion) || isNullOrInvalid(SN) || isNullOrInvalid(deviceModel) || isNullOrInvalid(deviceBrand);
+    }
+
+    /**
+     * 检查给定的字符串是否为 null、"null" 或空字符串。
+     *
+     * @param value 要检查的字符串。
+     * @return 如果字符串为 null、"null" 或空字符串，则返回 true；否则返回 false。
+     */
+    private boolean isNullOrInvalid(String value) {
+        return value == null || value.equals("null") || value.isEmpty();
+    }
+}
diff --git a/src/main/java/com/kimgo/wepush/model/DeviceInfoDAO.java b/src/main/java/com/kimgo/wepush/model/DeviceInfoDAO.java
new file mode 100644
index 0000000..97ccb8f
--- /dev/null
+++ b/src/main/java/com/kimgo/wepush/model/DeviceInfoDAO.java
@@ -0,0 +1,23 @@
+package com.kimgo.wepush.model;
+
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableField;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+import lombok.Data;
+
+@Data
+@TableName("device_info")
+public class DeviceInfoDAO {
+    @TableId(type = IdType.AUTO)
+    private Integer id;
+    private int isMonitored;
+    private long timeOutPeriod;
+    private String deviceBrand;
+    private String androidVersion;
+    @TableField("sn")
+    private String SN;
+    private String deviceModel;
+    private long lastOnlineTime;
+    private int status;
+}
diff --git a/src/main/java/com/kimgo/wepush/request/Request.java b/src/main/java/com/kimgo/wepush/request/Request.java
new file mode 100644
index 0000000..990b5ae
--- /dev/null
+++ b/src/main/java/com/kimgo/wepush/request/Request.java
@@ -0,0 +1,60 @@
+package com.kimgo.wepush.request;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.kimgo.wepush.model.TextCardMessage;
+import com.kimgo.wepush.response.QyWeChatSendMessageApiResponse;
+import com.kimgo.wepush.service.QyWeChatURLService;
+import com.kimgo.wepush.service.TokenService;
+import okhttp3.MediaType;
+import okhttp3.OkHttpClient;
+import okhttp3.RequestBody;
+import okhttp3.Response;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import java.io.IOException;
+
+public class Request {
+    private final Logger logger = LoggerFactory.getLogger(Request.class);
+
+    public <T> QyWeChatSendMessageApiResponse okhttpRequest(String url,String accessToken,T object){
+        OkHttpClient client = new OkHttpClient();
+
+        // 使用Jackson进行序列化
+        ObjectMapper objectMapper = new ObjectMapper();
+        String jsonBody = null;
+        try {
+            jsonBody = objectMapper.writeValueAsString(object);
+            logger.info("jsonBody: {}",jsonBody);
+        } catch (JsonProcessingException e) {
+            logger.error("JSON processing error", e);
+            return null;
+        }
+        // 构建请求体
+        RequestBody body = RequestBody.create(MediaType.parse("application/json; charset=utf-8"), jsonBody);
+        okhttp3.Request request = new okhttp3.Request.Builder().url(url).post(body).build();
+        try (Response response = client.newCall(request).execute()) {
+            String responseBody = response.body().string();
+            logger.info("request sendMessage api ResponseBody: {}", responseBody);
+
+            ObjectMapper objectMapper1 = new ObjectMapper();
+            QyWeChatSendMessageApiResponse apiResponse = objectMapper1.readValue(responseBody, QyWeChatSendMessageApiResponse.class);
+
+            if (apiResponse.getErrcode() == 0) {
+                logger.debug("Request qyWeChat Success.");
+                return apiResponse;
+            } else if (apiResponse.getErrcode() == 42001 || apiResponse.getErrcode() == 40014) {
+                logger.info("Access token expired. Refreshing token...");
+                // 一个方法来刷新accessToken
+                return apiResponse;
+            } else {
+                // 处理其他错误情况
+                logger.error("Error: {}", apiResponse.getErrmsg());
+                return null;
+            }
+        } catch (IOException e) {
+            logger.error("OkHttp request error", e);
+            return null;
+        }
+    }
+}
diff --git a/src/main/java/com/kimgo/wepush/response/ServerResponseEntity.java b/src/main/java/com/kimgo/wepush/response/ServerResponseEntity.java
index 445dbbf..0300a29 100644
--- a/src/main/java/com/kimgo/wepush/response/ServerResponseEntity.java
+++ b/src/main/java/com/kimgo/wepush/response/ServerResponseEntity.java
@@ -62,8 +62,9 @@ public class ServerResponseEntity <T> implements Serializable {
     public static <T> ServerResponseEntity<T> success(){
         ServerResponseEntity<T> serverResponseEntity = new ServerResponseEntity<>();
         serverResponseEntity.setCode(ResponseEnum.OK.value());
-        serverResponseEntity.getMsg();
+        serverResponseEntity.setMsg(ResponseEnum.OK.getMsg());
         serverResponseEntity.setTimestamp(Instant.now().getEpochSecond());
+        serverResponseEntity.setData(null);
         return serverResponseEntity;
     }
 
diff --git a/src/main/java/com/kimgo/wepush/service/CallService.java b/src/main/java/com/kimgo/wepush/service/CallService.java
index 0320bd8..47f1900 100644
--- a/src/main/java/com/kimgo/wepush/service/CallService.java
+++ b/src/main/java/com/kimgo/wepush/service/CallService.java
@@ -2,7 +2,6 @@ package com.kimgo.wepush.service;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import com.kimgo.wepush.common.PhoneNumberValidation;
 import com.kimgo.wepush.response.QyWeChatSendMessageApiResponse;
 import com.kimgo.wepush.model.CallInfo;
 import com.kimgo.wepush.model.TextCardMessage;
diff --git a/src/main/java/com/kimgo/wepush/service/HeartBeatService.java b/src/main/java/com/kimgo/wepush/service/HeartBeatService.java
new file mode 100644
index 0000000..8957eed
--- /dev/null
+++ b/src/main/java/com/kimgo/wepush/service/HeartBeatService.java
@@ -0,0 +1,119 @@
+package com.kimgo.wepush.service;
+
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
+import com.kimgo.wepush.mapper.DeviceInfoDAOMapper;
+import com.kimgo.wepush.model.DeviceInfo;
+import com.kimgo.wepush.model.DeviceInfoDAO;
+import com.kimgo.wepush.response.ServerResponseEntity;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+@Service
+public class HeartBeatService {
+    private final Logger logger = LoggerFactory.getLogger(HeartBeatService.class);
+    private final long TIME_OUT_PERIOD = 600;
+    @Autowired
+    TokenService tokenService;
+    @Autowired
+    private DeviceInfoDAOMapper deviceInfoDAOMapper;
+    public ServerResponseEntity handleHeartbeatSignal(String accessToken,DeviceInfo deviceInfo) {
+        String correctAccessToken = tokenService.getApiAccessToken();
+        logger.info("accessToken: {} correctAccessToken: {}",accessToken,correctAccessToken);
+        if (!correctAccessToken.equals(accessToken)){
+            return ServerResponseEntity.fail("Invalid accessToken");
+        }
+        DeviceInfoDAO deviceInfoDAO = getDeviceInfoBySN(deviceInfo.getSN());
+        if (deviceInfoDAO == null) {
+            // 设备信息不存在，可能是无效的设备
+            boolean isSuccess =  addDeviceInfo(deviceInfo);
+            if (isSuccess){
+                return ServerResponseEntity.success();
+            } else {
+                logger.info("add to mysql error");
+            }
+        }
+        try {
+            updateClientStatus(deviceInfo);
+            return ServerResponseEntity.success();
+        } catch (Exception e) {
+            logger.error("update client status error.");
+            // 处理更新状态时的异常
+            return ServerResponseEntity.fail("Error updating client status");
+        }
+    }
+
+
+    public void updateClientStatus(DeviceInfo deviceInfo) {
+        long currentTimeMillis = System.currentTimeMillis();
+        // 更新该客户端的最后活跃时间
+
+        UpdateWrapper<DeviceInfoDAO> updateWrapper = new UpdateWrapper<>();
+        updateWrapper.eq("sn", deviceInfo.getSN());
+        updateWrapper.set("last_online_time", currentTimeMillis); // 设置新的 accessToken
+
+        int result = deviceInfoDAOMapper.update(null, updateWrapper);
+        if (result > 0) {
+            logger.debug("Update successful");
+        } else {
+            logger.warn("Update failed: No rows affected");
+        }
+    }
+
+    public boolean addDeviceInfo(DeviceInfo deviceInfo) {
+        try {
+            DeviceInfoDAO deviceInfoDAO = convertToDeviceInfoDAO(deviceInfo);
+            int result = deviceInfoDAOMapper.insert(deviceInfoDAO);
+            logger.info("result: {}",result);
+            return result > 0;
+        } catch (Exception e) {
+            logger.error("Error adding device info", e);
+            return false;
+        }
+    }
+
+    /**
+     * 根据 androidId 查询 DeviceInfo。
+     *
+     * @param SN 要查询的 SN。
+     * @return 与 androidId 对应的 DeviceInfoDAO 对象，如果没有找到，则返回 null。
+     */
+    public DeviceInfoDAO getDeviceInfoBySN(String SN) {
+        QueryWrapper<DeviceInfoDAO> queryWrapper = new QueryWrapper<>();
+        queryWrapper.eq("sn", SN);
+        try {
+            DeviceInfoDAO deviceInfoDAO = deviceInfoDAOMapper.selectOne(queryWrapper);
+            if (deviceInfoDAO != null) {
+                logger.info("Data is queried in the database based on the device id");
+                return deviceInfoDAO;
+            }
+        } catch (Exception e) {
+            logger.error("Error querying device info by android ID", e);
+        }
+        return null;
+    }
+
+
+    /**
+     * 将 DeviceInfo 转换为 DeviceInfoDAO。
+     *
+     * @param deviceInfo 要转换的 DeviceInfo 对象。
+     * @return 转换后的 DeviceInfoDAO 对象。
+     */
+    private DeviceInfoDAO convertToDeviceInfoDAO(DeviceInfo deviceInfo) {
+        // 这里需要实现将 DeviceInfo 转换为 DeviceInfoDAO 的逻辑
+        // 示例代码（根据实际字段调整）：
+        DeviceInfoDAO deviceInfoDAO = new DeviceInfoDAO();
+        deviceInfoDAO.setIsMonitored(1);
+        deviceInfoDAO.setDeviceBrand(deviceInfo.getDeviceBrand());
+        deviceInfoDAO.setSN(deviceInfo.getSN());
+        deviceInfoDAO.setDeviceModel(deviceInfo.getDeviceModel());
+        deviceInfoDAO.setAndroidVersion(deviceInfo.getAndroidVersion());
+        deviceInfoDAO.setTimeOutPeriod(TIME_OUT_PERIOD);
+        deviceInfoDAO.setLastOnlineTime(System.currentTimeMillis());
+        deviceInfoDAO.setStatus(1);
+        return deviceInfoDAO;
+    }
+}
diff --git a/src/main/java/com/kimgo/wepush/service/MonitorService.java b/src/main/java/com/kimgo/wepush/service/MonitorService.java
new file mode 100644
index 0000000..89a6cb6
--- /dev/null
+++ b/src/main/java/com/kimgo/wepush/service/MonitorService.java
@@ -0,0 +1,131 @@
+package com.kimgo.wepush.service;
+
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
+import com.kimgo.wepush.mapper.DeviceInfoDAOMapper;
+import com.kimgo.wepush.model.DeviceInfoDAO;
+import com.kimgo.wepush.model.TextCardMessage;
+import com.kimgo.wepush.request.Request;
+import com.kimgo.wepush.response.QyWeChatSendMessageApiResponse;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Service;
+
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.Collections;
+import java.util.List;
+
+@Service
+public class MonitorService {
+    @Autowired
+    private ApiSettingService apiSettingService;
+    @Autowired
+    private QyWeChatURLService qyWeChatURLService;
+    @Autowired
+    private TokenService tokenService;
+    private final Logger logger = LoggerFactory.getLogger(MonitorService.class);
+    @Autowired
+    private DeviceInfoDAOMapper deviceInfoDAOMapper;
+
+    @Scheduled(fixedDelay = 480000)
+    public void monitorOnlineDevices() {
+        List<DeviceInfoDAO> devices = getAllDevices();
+        if (devices.isEmpty()) {
+            // 没有找到数据的处理逻辑
+            logger.info("no data was queried.");
+        }
+        for (DeviceInfoDAO device : devices) {
+            try {
+                if (device.getIsMonitored() != 1){
+                    logger.info("device is not monitored ,device SN: {}",device.getSN());
+                    continue;
+                }
+                long currentTimeMillis = System.currentTimeMillis();
+                if (currentTimeMillis - device.getLastOnlineTime() > device.getTimeOutPeriod()) {
+                    updateStatus(device, 0); // 设备离线
+                    sendNotification(device);
+                } else {
+                    updateStatus(device, 1); // 设备在线
+                }
+            } catch (Exception e) {
+                logger.error("Error processing device with SN " + device.getSN(), e);
+            }
+        }
+    }
+
+    /**
+     * 获取数据库中所有DeviceInfoDAO对象的id。
+     *
+     * @return 包含所有id的列表。
+     */
+    private List<DeviceInfoDAO> getAllDevices() {
+        try {
+            // 查询所有DeviceInfoDAO对象
+            List<DeviceInfoDAO> deviceInfoDAOs = deviceInfoDAOMapper.selectList(new QueryWrapper<>());
+            // 提取并返回所有对象的id
+            return deviceInfoDAOs;
+        } catch (Exception e) {
+            logger.error("Error querying all device info IDs", e);
+        }
+        return Collections.emptyList();
+    }
+
+
+    private void sendNotification(DeviceInfoDAO deviceInfoDAO){
+        Request request = new Request();
+        String accessToken = tokenService.getAccessToken();
+        String url = qyWeChatURLService.getSendTextCardMessageUrl() + "?access_token=" + accessToken;
+        QyWeChatSendMessageApiResponse qyWeChatSendMessageApiResponse = request.okhttpRequest(url,accessToken,setTextCardMessage(deviceInfoDAO));
+        if (qyWeChatSendMessageApiResponse ==null){
+            logger.info("Send Notification Fail");
+        }
+        if (qyWeChatSendMessageApiResponse != null && qyWeChatSendMessageApiResponse.getErrcode() == 0) {
+            logger.info("Send Notification Success");
+        }
+    }
+    public TextCardMessage setTextCardMessage(DeviceInfoDAO deviceInfoDAO) {
+        TextCardMessage textCardMessage = new TextCardMessage();
+
+        textCardMessage.setTouser(apiSettingService.getApiSetting().getTouser());
+        textCardMessage.setMsgtype(apiSettingService.getApiSetting().getMsgtype());
+        textCardMessage.setAgentid(apiSettingService.getApiSetting().getAgentid());
+        textCardMessage.setEnable_duplicate_check(0);
+
+        TextCardMessage.TextCard textCard = new TextCardMessage.TextCard();
+        textCard.setTitle("设备掉线通知");
+        String formattedCurrentTime = LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
+        textCard.setDescription("<div class='gray'>设备信息</div>" +
+                "<div class='highlight'>品牌: " + deviceInfoDAO.getDeviceBrand() + "</div>" +
+                "<div class='highlight'>设备型号: " + deviceInfoDAO.getDeviceModel() + "</div>" +
+                "<div class='highlight'>安卓版本: " + deviceInfoDAO.getAndroidVersion() + "</div>" +
+                "<div class='highlight'>SN: " + deviceInfoDAO.getSN() + "</div>" +
+                "<div class='highlight'>监测到掉线时间: " + formattedCurrentTime + "</div>" +
+                "检测到设备已掉线,请及时查看设备状态.");
+        textCard.setUrl("https://kimgo.cn");
+        // 将TextCard对象设置到TextCardMessage中
+        textCardMessage.setTextcard(textCard);
+
+        logger.info("TextCardMessage: {}", textCardMessage);
+
+        return textCardMessage;
+    }
+    private void updateStatus(DeviceInfoDAO device, int status) {
+        try {
+            UpdateWrapper<DeviceInfoDAO> updateWrapper = new UpdateWrapper<>();
+            updateWrapper.eq("SN", device.getSN());
+            updateWrapper.set("status", status);
+
+            int result = deviceInfoDAOMapper.update(null, updateWrapper);
+            if (result > 0) {
+                logger.debug("Update successful for SN: " + device.getSN());
+            } else {
+                logger.warn("Update failed: No rows affected for SN: " + device.getSN());
+            }
+        } catch (Exception e) {
+            logger.error("Error updating status for SN: " + device.getSN(), e);
+        }
+    }
+}
diff --git a/src/main/java/com/kimgo/wepush/service/QyWeChatURLService.java b/src/main/java/com/kimgo/wepush/service/QyWeChatURLService.java
index 677cb43..0c0df9e 100644
--- a/src/main/java/com/kimgo/wepush/service/QyWeChatURLService.java
+++ b/src/main/java/com/kimgo/wepush/service/QyWeChatURLService.java
@@ -18,7 +18,6 @@ public class QyWeChatURLService {
     private QyWeChatURLMapper qyWeChatURLMapper;
     @Autowired
     private UserConfig userConfig;
-    private String urlName;
     private String sendTextCardMessageUrl;
     private String qyWechatGetTokenUrl;
 
diff --git a/src/test/java/com/kimgo/wepush/service/HeartBeatServiceTest.java b/src/test/java/com/kimgo/wepush/service/HeartBeatServiceTest.java
new file mode 100644
index 0000000..0cdd908
--- /dev/null
+++ b/src/test/java/com/kimgo/wepush/service/HeartBeatServiceTest.java
@@ -0,0 +1,31 @@
+package com.kimgo.wepush.service;
+
+import com.kimgo.wepush.model.DeviceInfo;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+@SpringBootTest
+class HeartBeatServiceTest {
+    @Autowired
+    HeartBeatService heartBeatService;
+    @Test
+    void updateClientStatus() {
+        DeviceInfo deviceInfo = new DeviceInfo();
+        deviceInfo.setDeviceModel("Model B");
+        deviceInfo.setSerialNumber("SN1234567891");
+        deviceInfo.setAndroidId("android_id_2");
+        heartBeatService.updateClientStatus(deviceInfo);
+    }
+
+    @Test
+    void addDeviceInfo() {
+        DeviceInfo deviceInfo = new DeviceInfo();
+        deviceInfo.setDeviceModel("Model C");
+        deviceInfo.setSerialNumber("SN1234567899");
+        deviceInfo.setAndroidId("dadwdwfcev");
+        heartBeatService.addDeviceInfo(deviceInfo);
+    }
+}
\ No newline at end of file
diff --git a/src/test/java/com/kimgo/wepush/service/MonitorServiceTest.java b/src/test/java/com/kimgo/wepush/service/MonitorServiceTest.java
new file mode 100644
index 0000000..844ab75
--- /dev/null
+++ b/src/test/java/com/kimgo/wepush/service/MonitorServiceTest.java
@@ -0,0 +1,17 @@
+package com.kimgo.wepush.service;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class MonitorServiceTest {
+    @Autowired
+    private MonitorService monitorService;
+
+    @Test
+    void monitorOnlineDevices() {
+
+        monitorService.monitorOnlineDevices();
+    }
+}
\ No newline at end of file