4g挂牌对接，可以接收到 心跳日志， 上传的音频文件 ，保存到数据库和本地文件

src/main/java/com/rj/entity/YhyHeartbeatLog.java

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+package com.rj.entity;
+
+import com.baomidou.mybatisplus.annotation.TableName;
+import com.baomidou.mybatisplus.annotation.TableId;
+import java.time.LocalDateTime;
+import com.baomidou.mybatisplus.annotation.TableField;
+import java.io.Serializable;
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+
+/**
+ * <p>
+ * 心跳日志表
+ * </p>
+ *
+ * @author Auto Generated
+ * @since 2025-01-01
+ */
+@Data
+@EqualsAndHashCode(callSuper = false)
+@TableName("yhy_heartbeat_log")
+@Schema(description = "心跳日志表")
+public class YhyHeartbeatLog implements Serializable {
+
+    private static final long serialVersionUID = 1L;
+
+    @Schema(description = "主键，UUID")
+    @TableId("id")
+    private String id;
+
+    @Schema(description = "数据类型，固定值：HeartbeatLog")
+    @TableField("data_type")
+    private String dataType;
+
+    @Schema(description = "时间戳")
+    @TableField("time_stamp")
+    private LocalDateTime timeStamp;
+
+    @Schema(description = "设备号")
+    @TableField("device_no")
+    private String deviceNo;
+
+    @Schema(description = "设备状态（如：Online）")
+    @TableField("device_status")
+    private String deviceStatus;
+
+    @Schema(description = "电源状态（0-关闭，1-开启）")
+    @TableField("power_status")
+    private Boolean powerStatus;
+
+    @Schema(description = "剩余电量（0-100）")
+    @TableField("remain_power")
+    private Integer remainPower;
+
+    @Schema(description = "剩余存储空间（字节）")
+    @TableField("remain_storage_size")
+    private Long remainStorageSize;
+
+    @Schema(description = "心跳时间")
+    @TableField("heartbeat_time")
+    private LocalDateTime heartbeatTime;
+
+    @Schema(description = "设备版本（如：主:1.4.4 音频:1.4.2）")
+    @TableField("device_ver")
+    private String deviceVer;
+
+    @Schema(description = "扩展信息")
+    @TableField("extend")
+    private String extend;
+
+    @Schema(description = "主体信息")
+    @TableField("body")
+    private String body;
+
+    @Schema(description = "数据创建时间（来自原始数据）")
+    @TableField("created_time")
+    private LocalDateTime createdTime;
+
+    @Schema(description = "系统创建时间")
+    @TableField("create_time")
+    private LocalDateTime createTime;
+
+    @Schema(description = "系统更新时间")
+    @TableField("update_time")
+    private LocalDateTime updateTime;
+
+}
+