处理获取消息体内容为空时造成的空指针异常

src/main/java/com/genersoft/iot/vmp/gb28181/transmit/event/request/SIPRequestProcessorParent.java

@@ -231,6 +231,9 @@ public abstract class SIPRequestProcessorParent {
 		byte destBye = (byte) despChar;
 		List<Byte> result = new ArrayList<>();
 		byte[] rawContent = request.getRawContent();
+		if (rawContent == null) {
+			return null;
+		}
 		for (int i = 0; i < rawContent.length; i++) {
 			if (rawContent[i] == destBye) {
 				boolean resul = false;

src/main/java/com/genersoft/iot/vmp/gb28181/transmit/event/request/impl/NotifyRequestProcessor.java

@@ -41,7 +41,7 @@ import java.util.Iterator;
 import java.util.concurrent.ConcurrentLinkedQueue;
 
 /**
- * SIP命令类型： NOTIFY请求
+ * SIP命令类型： NOTIFY请求,这是作为上级发送订阅请求后，设备才会响应的
  */
 @Component
 public class NotifyRequestProcessor extends SIPRequestProcessorParent implements InitializingBean, ISIPRequestProcessor {
@@ -198,6 +198,7 @@ public class NotifyRequestProcessor extends SIPRequestProcessorParent implements
 			}
 
 			storager.updateChannelPosition(deviceChannel);
+
 			// 发送redis消息。 通知位置信息的变化
 			JSONObject jsonObject = new JSONObject();
 			jsonObject.put("time", time);
@@ -237,6 +238,10 @@ public class NotifyRequestProcessor extends SIPRequestProcessorParent implements
 				return;
 			}
 			rootElement = getRootElement(evt, device.getCharset());
+			if (rootElement == null) {
+				logger.warn("[ NotifyAlarm ] content cannot be null");
+				return;
+			}
 			DeviceAlarm deviceAlarm = new DeviceAlarm();
 			deviceAlarm.setDeviceId(deviceId);
 			deviceAlarm.setAlarmPriority(XmlUtil.getText(rootElement, "AlarmPriority"));
@@ -272,8 +277,6 @@ public class NotifyRequestProcessor extends SIPRequestProcessorParent implements
 				mobilePosition.setLatitude(deviceAlarm.getLatitude());
 				mobilePosition.setReportSource("GPS Alarm");
 
-
-
 				// 更新device channel 的经纬度
 				DeviceChannel deviceChannel = new DeviceChannel();
 				deviceChannel.setDeviceId(device.getDeviceId());
@@ -294,6 +297,18 @@ public class NotifyRequestProcessor extends SIPRequestProcessorParent implements
 				}
 
 				storager.updateChannelPosition(deviceChannel);
+				// 发送redis消息。 通知位置信息的变化
+				JSONObject jsonObject = new JSONObject();
+				jsonObject.put("time", mobilePosition.getTime());
+				jsonObject.put("serial", deviceChannel.getDeviceId());
+				jsonObject.put("code", deviceChannel.getChannelId());
+				jsonObject.put("longitude", mobilePosition.getLongitude());
+				jsonObject.put("latitude", mobilePosition.getLatitude());
+				jsonObject.put("altitude", mobilePosition.getAltitude());
+				jsonObject.put("direction", mobilePosition.getDirection());
+				jsonObject.put("speed", mobilePosition.getSpeed());
+				redisCatchStorage.sendMobilePositionMsg(jsonObject);
+
 			}
 			// TODO: 需要实现存储报警信息、报警分类
 
@@ -322,6 +337,10 @@ public class NotifyRequestProcessor extends SIPRequestProcessorParent implements
 				return;
 			}
 			Element rootElement = getRootElement(evt, device.getCharset());
+			if (rootElement == null) {
+				logger.warn("[ 收到目录订阅 ] content cannot be null");
+				return;
+			}
 			Element deviceListElement = rootElement.element("DeviceList");
 			if (deviceListElement == null) {
 				return;

src/main/java/com/genersoft/iot/vmp/gb28181/transmit/event/request/impl/message/notify/NotifyMessageHandler.java

@@ -7,7 +7,7 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 
 /**
- * 命令类型： 通知命令
+ * 命令类型： 通知命令， 参看 A.2.5 通知命令
  * 命令类型： 状态信息(心跳)报送, 报警通知, 媒体通知, 移动设备位置数据，语音广播通知(TODO), 设备预置位(TODO)
  * @author lin
  */

src/main/java/com/genersoft/iot/vmp/gb28181/transmit/event/request/impl/message/notify/cmd/AlarmNotifyMessageHandler.java

@@ -1,5 +1,6 @@
 package com.genersoft.iot.vmp.gb28181.transmit.event.request.impl.message.notify.cmd;
 
+import com.alibaba.fastjson.JSONObject;
 import com.genersoft.iot.vmp.conf.SipConfig;
 import com.genersoft.iot.vmp.conf.UserSetting;
 import com.genersoft.iot.vmp.gb28181.bean.*;
@@ -32,6 +33,9 @@ import java.text.ParseException;
 
 import static com.genersoft.iot.vmp.gb28181.utils.XmlUtil.*;
 
+/**
+ * 报警事件的处理，参考：9.4
+ */
 @Component
 public class AlarmNotifyMessageHandler extends SIPRequestProcessorParent implements InitializingBean, IMessageHandler {
 
@@ -73,12 +77,8 @@ public class AlarmNotifyMessageHandler extends SIPRequestProcessorParent impleme
         // 回复200 OK
         try {
             responseAck(evt, Response.OK);
-        } catch (SipException e) {
-            throw new RuntimeException(e);
-        } catch (InvalidArgumentException e) {
-            throw new RuntimeException(e);
-        } catch (ParseException e) {
-            throw new RuntimeException(e);
+        } catch (SipException | InvalidArgumentException | ParseException e) {
+            logger.error("[收到报警通知], 回复200OK失败", e);
         }
 
         Element deviceIdElement = rootElement.element("DeviceID");
@@ -124,7 +124,6 @@ public class AlarmNotifyMessageHandler extends SIPRequestProcessorParent impleme
                 mobilePosition.setLatitude(deviceAlarm.getLatitude());
                 mobilePosition.setReportSource("GPS Alarm");
 
-
                 // 更新device channel 的经纬度
                 DeviceChannel deviceChannel = new DeviceChannel();
                 deviceChannel.setDeviceId(device.getDeviceId());
@@ -144,6 +143,18 @@ public class AlarmNotifyMessageHandler extends SIPRequestProcessorParent impleme
                     storager.insertMobilePosition(mobilePosition);
                 }
                 storager.updateChannelPosition(deviceChannel);
+
+                // 发送redis消息。 通知位置信息的变化
+                JSONObject jsonObject = new JSONObject();
+                jsonObject.put("time", mobilePosition.getTime());
+                jsonObject.put("serial", deviceChannel.getDeviceId());
+                jsonObject.put("code", deviceChannel.getChannelId());
+                jsonObject.put("longitude", mobilePosition.getLongitude());
+                jsonObject.put("latitude", mobilePosition.getLatitude());
+                jsonObject.put("altitude", mobilePosition.getAltitude());
+                jsonObject.put("direction", mobilePosition.getDirection());
+                jsonObject.put("speed", mobilePosition.getSpeed());
+                redisCatchStorage.sendMobilePositionMsg(jsonObject);
             }
         }
         if (!StringUtils.isEmpty(deviceAlarm.getDeviceId())) {
@@ -159,7 +170,6 @@ public class AlarmNotifyMessageHandler extends SIPRequestProcessorParent impleme
             alarmChannelMessage.setAlarmDescription(deviceAlarm.getAlarmDescription());
             alarmChannelMessage.setGbId(channelId);
             redisCatchStorage.sendAlarmMsg(alarmChannelMessage);
-
             return;
         }
 
@@ -169,7 +179,6 @@ public class AlarmNotifyMessageHandler extends SIPRequestProcessorParent impleme
             deviceAlarmService.add(deviceAlarm);
         }
 
-
         if (redisCatchStorage.deviceIsOnline(device.getDeviceId())) {
             publisher.deviceAlarmEventPublish(deviceAlarm);
         }

src/main/java/com/genersoft/iot/vmp/gb28181/transmit/event/request/impl/message/notify/cmd/CatalogNotifyMessageHandler.java

@@ -1,88 +0,0 @@
-package com.genersoft.iot.vmp.gb28181.transmit.event.request.impl.message.notify.cmd;
-
-import com.genersoft.iot.vmp.gb28181.bean.*;
-import com.genersoft.iot.vmp.gb28181.transmit.callback.DeferredResultHolder;
-import com.genersoft.iot.vmp.gb28181.transmit.cmd.impl.SIPCommanderFroPlatform;
-import com.genersoft.iot.vmp.gb28181.transmit.event.request.SIPRequestProcessorParent;
-import com.genersoft.iot.vmp.gb28181.transmit.event.request.impl.message.IMessageHandler;
-import com.genersoft.iot.vmp.gb28181.transmit.event.request.impl.message.notify.NotifyMessageHandler;
-import com.genersoft.iot.vmp.storager.IVideoManagerStorage;
-import org.dom4j.Element;
-import org.springframework.beans.factory.InitializingBean;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.stereotype.Component;
-
-import javax.sip.InvalidArgumentException;
-import javax.sip.RequestEvent;
-import javax.sip.SipException;
-import javax.sip.header.FromHeader;
-import javax.sip.message.Response;
-import java.text.ParseException;
-import java.util.ArrayList;
-import java.util.List;
-
-@Component
-public class CatalogNotifyMessageHandler extends SIPRequestProcessorParent implements InitializingBean, IMessageHandler {
-
-    private final String cmdType = "Catalog";
-
-    @Autowired
-    private NotifyMessageHandler notifyMessageHandler;
-
-    @Autowired
-    private IVideoManagerStorage storage;
-
-    @Autowired
-    private SIPCommanderFroPlatform cmderFroPlatform;
-
-    @Override
-    public void afterPropertiesSet() throws Exception {
-        notifyMessageHandler.addHandler(cmdType, this);
-    }
-
-    @Override
-    public void handForDevice(RequestEvent evt, Device device, Element element) {
-
-    }
-
-    @Override
-    public void handForPlatform(RequestEvent evt, ParentPlatform parentPlatform, Element rootElement) {
-
-        String key = DeferredResultHolder.CALLBACK_CMD_CATALOG + parentPlatform.getServerGBId();
-        FromHeader fromHeader = (FromHeader) evt.getRequest().getHeader(FromHeader.NAME);
-        try {
-            // 回复200 OK
-            responseAck(evt, Response.OK);
-            Element snElement = rootElement.element("SN");
-            String sn = snElement.getText();
-            // 准备回复通道信息
-            List<DeviceChannelInPlatform> deviceChannels = storage.queryChannelListInParentPlatform(parentPlatform.getServerGBId());
-            // 查询关联的直播通道
-            List<DeviceChannel> gbStreams = storage.queryGbStreamListInPlatform(parentPlatform.getServerGBId());
-            // 回复目录信息
-            List<DeviceChannel> catalogs =  storage.queryCatalogInPlatform(parentPlatform.getServerGBId());
-
-            List<DeviceChannel> allChannels = new ArrayList<>();
-            if (catalogs.size() > 0) {
-                allChannels.addAll(catalogs);
-            }
-            // 回复级联的通道
-            if (deviceChannels.size() > 0) {
-                allChannels.addAll(deviceChannels);
-            }
-            // 回复直播的通道
-            if (gbStreams.size() > 0) {
-                allChannels.addAll(gbStreams);
-            }
-            if (allChannels.size() > 0) {
-                cmderFroPlatform.catalogQuery(allChannels, parentPlatform, sn, fromHeader.getTag());
-            }else {
-                // 回复无通道
-                cmderFroPlatform.catalogQuery(null, parentPlatform, sn, fromHeader.getTag(), 0);
-            }
-        } catch (SipException | InvalidArgumentException | ParseException e) {
-            e.printStackTrace();
-        }
-
-    }
-}

src/main/java/com/genersoft/iot/vmp/gb28181/transmit/event/request/impl/message/notify/cmd/KeepaliveNotifyMessageHandler.java

@@ -25,6 +25,9 @@ import javax.sip.header.ViaHeader;
 import javax.sip.message.Response;
 import java.text.ParseException;
 
+/**
+ * 状态信息(心跳)报送
+ */
 @Component
 public class KeepaliveNotifyMessageHandler extends SIPRequestProcessorParent implements InitializingBean, IMessageHandler {
 

src/main/java/com/genersoft/iot/vmp/gb28181/transmit/event/request/impl/message/notify/cmd/MediaStatusNotifyMessageHandler.java

@@ -29,6 +29,9 @@ import java.text.ParseException;
 
 import static com.genersoft.iot.vmp.gb28181.utils.XmlUtil.getText;
 
+/**
+ * 媒体通知
+ */
 @Component
 public class MediaStatusNotifyMessageHandler extends SIPRequestProcessorParent implements InitializingBean, IMessageHandler {
 

src/main/java/com/genersoft/iot/vmp/gb28181/transmit/event/request/impl/message/notify/cmd/MobilePositionNotifyMessageHandler.java

@@ -1,16 +1,16 @@
 package com.genersoft.iot.vmp.gb28181.transmit.event.request.impl.message.notify.cmd;
 
+import com.alibaba.fastjson.JSONObject;
 import com.genersoft.iot.vmp.conf.UserSetting;
 import com.genersoft.iot.vmp.gb28181.bean.*;
 import com.genersoft.iot.vmp.gb28181.transmit.event.request.SIPRequestProcessorParent;
 import com.genersoft.iot.vmp.gb28181.transmit.event.request.impl.message.IMessageHandler;
 import com.genersoft.iot.vmp.gb28181.transmit.event.request.impl.message.notify.NotifyMessageHandler;
-import com.genersoft.iot.vmp.gb28181.utils.Coordtransform;
 import com.genersoft.iot.vmp.gb28181.utils.NumericUtil;
 import com.genersoft.iot.vmp.service.IDeviceChannelService;
+import com.genersoft.iot.vmp.storager.IRedisCatchStorage;
 import com.genersoft.iot.vmp.storager.IVideoManagerStorage;
 import com.genersoft.iot.vmp.utils.DateUtil;
-import com.genersoft.iot.vmp.utils.GpsUtil;
 import org.dom4j.DocumentException;
 import org.dom4j.Element;
 import org.slf4j.Logger;
@@ -28,6 +28,9 @@ import java.text.ParseException;
 
 import static com.genersoft.iot.vmp.gb28181.utils.XmlUtil.getText;
 
+/**
+ * 移动设备位置数据通知，设备主动发起，不需要上级订阅
+ */
 @Component
 public class MobilePositionNotifyMessageHandler extends SIPRequestProcessorParent implements InitializingBean, IMessageHandler {
 
@@ -43,6 +46,9 @@ public class MobilePositionNotifyMessageHandler extends SIPRequestProcessorParen
     @Autowired
     private IVideoManagerStorage storager;
 
+    @Autowired
+    private IRedisCatchStorage redisCatchStorage;
+
     @Autowired
     private IDeviceChannelService deviceChannelService;
 
@@ -56,7 +62,11 @@ public class MobilePositionNotifyMessageHandler extends SIPRequestProcessorParen
 
         try {
             rootElement = getRootElement(evt, device.getCharset());
-
+            if (rootElement == null) {
+                logger.warn("[ 移动设备位置数据通知 ] content cannot be null");
+                responseAck(evt, Response.BAD_REQUEST);
+                return;
+            }
             MobilePosition mobilePosition = new MobilePosition();
             mobilePosition.setCreateTime(DateUtil.getNow());
             if (!StringUtils.isEmpty(device.getName())) {
@@ -106,6 +116,19 @@ public class MobilePositionNotifyMessageHandler extends SIPRequestProcessorParen
             storager.updateChannelPosition(deviceChannel);
             //回复 200 OK
             responseAck(evt, Response.OK);
+
+            // 发送redis消息。 通知位置信息的变化
+            JSONObject jsonObject = new JSONObject();
+            jsonObject.put("time", mobilePosition.getTime());
+            jsonObject.put("serial", deviceChannel.getDeviceId());
+            jsonObject.put("code", deviceChannel.getChannelId());
+            jsonObject.put("longitude", mobilePosition.getLongitude());
+            jsonObject.put("latitude", mobilePosition.getLatitude());
+            jsonObject.put("altitude", mobilePosition.getAltitude());
+            jsonObject.put("direction", mobilePosition.getDirection());
+            jsonObject.put("speed", mobilePosition.getSpeed());
+            redisCatchStorage.sendMobilePositionMsg(jsonObject);
+
         } catch (DocumentException | SipException | InvalidArgumentException | ParseException e) {
             e.printStackTrace();
         }

src/main/java/com/genersoft/iot/vmp/gb28181/transmit/event/request/impl/message/response/cmd/CatalogResponseMessageHandler.java

@@ -95,12 +95,16 @@ public class CatalogResponseMessageHandler extends SIPRequestProcessorParent imp
                         HandlerCatchData take = taskQueue.poll();
                         try {
                             Element rootElement = getRootElement(take.getEvt(), take.getDevice().getCharset());
+                            if (rootElement == null) {
+                                logger.warn("[ 收到通道 ] content cannot be null");
+                                continue;
+                            }
                             Element deviceListElement = rootElement.element("DeviceList");
                             Element sumNumElement = rootElement.element("SumNum");
                             Element snElement = rootElement.element("SN");
                             if (snElement == null || sumNumElement == null || deviceListElement == null) {
                                 responseAck(take.getEvt(), Response.BAD_REQUEST, "xml error");
-                                return;
+                                continue;
                             }
                             int sumNum = Integer.parseInt(sumNumElement.getText());
 
@@ -129,7 +133,8 @@ public class CatalogResponseMessageHandler extends SIPRequestProcessorParent imp
                                     catalogDataCatch.put(take.getDevice().getDeviceId(), sn, sumNum, take.getDevice(), channelList);
                                     logger.info("[收到通道]设备: {} -> {}个，{}/{}", take.getDevice().getDeviceId(), channelList.size(), catalogDataCatch.get(take.getDevice().getDeviceId()) == null ? 0 :catalogDataCatch.get(take.getDevice().getDeviceId()).size(), sumNum);
                                     if (catalogDataCatch.get(take.getDevice().getDeviceId()).size() == sumNum) {
-                                        // 数据已经完整接收
+                                        // 数据已经完整接收， 此时可能存在某个设备离线变上线的情况，但是考虑到性能，此处不做处理，
+                                        // 目前支持设备通道上线通知时和设备上线时向上级通知
                                         boolean resetChannelsResult = storager.resetChannels(take.getDevice().getDeviceId(), catalogDataCatch.get(take.getDevice().getDeviceId()));
                                         if (!resetChannelsResult) {
                                             String errorMsg = "接收成功，写入失败，共" + sumNum + "条，已接收" + catalogDataCatch.get(take.getDevice().getDeviceId()).size() + "条";

src/main/java/com/genersoft/iot/vmp/gb28181/transmit/event/request/impl/message/response/cmd/DeviceInfoResponseMessageHandler.java

@@ -75,6 +75,11 @@ public class DeviceInfoResponseMessageHandler extends SIPRequestProcessorParent
         }
         try {
             rootElement = getRootElement(evt, device.getCharset());
+            if (rootElement == null) {
+                logger.warn("[ 接收到DeviceInfo应答消息 ] content cannot be null");
+                responseAck(evt, Response.BAD_REQUEST);
+                return;
+            }
             Element deviceIdElement = rootElement.element("DeviceID");
             String channelId = deviceIdElement.getTextTrim();
             String key = DeferredResultHolder.CALLBACK_CMD_DEVICEINFO + device.getDeviceId() + channelId;

src/main/java/com/genersoft/iot/vmp/gb28181/transmit/event/request/impl/message/response/cmd/MobilePositionResponseMessageHandler.java

@@ -1,5 +1,6 @@
 package com.genersoft.iot.vmp.gb28181.transmit.event.request.impl.message.response.cmd;
 
+import com.alibaba.fastjson.JSONObject;
 import com.genersoft.iot.vmp.conf.UserSetting;
 import com.genersoft.iot.vmp.gb28181.bean.*;
 import com.genersoft.iot.vmp.gb28181.transmit.event.request.SIPRequestProcessorParent;
@@ -8,6 +9,7 @@ import com.genersoft.iot.vmp.gb28181.transmit.event.request.impl.message.respons
 import com.genersoft.iot.vmp.gb28181.utils.Coordtransform;
 import com.genersoft.iot.vmp.gb28181.utils.NumericUtil;
 import com.genersoft.iot.vmp.service.IDeviceChannelService;
+import com.genersoft.iot.vmp.storager.IRedisCatchStorage;
 import com.genersoft.iot.vmp.storager.IVideoManagerStorage;
 import com.genersoft.iot.vmp.utils.DateUtil;
 import com.genersoft.iot.vmp.utils.GpsUtil;
@@ -28,6 +30,10 @@ import java.text.ParseException;
 
 import static com.genersoft.iot.vmp.gb28181.utils.XmlUtil.getText;
 
+/**
+ * 移动设备位置数据查询回复
+ * @author lin
+ */
 @Component
 public class MobilePositionResponseMessageHandler extends SIPRequestProcessorParent implements InitializingBean, IMessageHandler {
 
@@ -43,6 +49,9 @@ public class MobilePositionResponseMessageHandler extends SIPRequestProcessorPar
     @Autowired
     private IVideoManagerStorage storager;
 
+    @Autowired
+    private IRedisCatchStorage redisCatchStorage;
+
     @Autowired
     private IDeviceChannelService deviceChannelService;
 
@@ -56,7 +65,11 @@ public class MobilePositionResponseMessageHandler extends SIPRequestProcessorPar
 
         try {
             rootElement = getRootElement(evt, device.getCharset());
-
+            if (rootElement == null) {
+                logger.warn("[ 移动设备位置数据查询回复 ] content cannot be null");
+                responseAck(evt, Response.BAD_REQUEST);
+                return;
+            }
             MobilePosition mobilePosition = new MobilePosition();
             mobilePosition.setCreateTime(DateUtil.getNow());
             if (!StringUtils.isEmpty(device.getName())) {
@@ -103,6 +116,18 @@ public class MobilePositionResponseMessageHandler extends SIPRequestProcessorPar
                 storager.insertMobilePosition(mobilePosition);
             }
             storager.updateChannelPosition(deviceChannel);
+
+            // 发送redis消息。 通知位置信息的变化
+            JSONObject jsonObject = new JSONObject();
+            jsonObject.put("time", mobilePosition.getTime());
+            jsonObject.put("serial", deviceChannel.getDeviceId());
+            jsonObject.put("code", deviceChannel.getChannelId());
+            jsonObject.put("longitude", mobilePosition.getLongitude());
+            jsonObject.put("latitude", mobilePosition.getLatitude());
+            jsonObject.put("altitude", mobilePosition.getAltitude());
+            jsonObject.put("direction", mobilePosition.getDirection());
+            jsonObject.put("speed", mobilePosition.getSpeed());
+            redisCatchStorage.sendMobilePositionMsg(jsonObject);
             //回复 200 OK
             responseAck(evt, Response.OK);
         } catch (DocumentException | SipException | InvalidArgumentException | ParseException e) {

src/main/java/com/genersoft/iot/vmp/gb28181/transmit/event/request/impl/message/response/cmd/PresetQueryResponseMessageHandler.java

@@ -26,6 +26,9 @@ import java.util.List;
 
 import static com.genersoft.iot.vmp.gb28181.utils.XmlUtil.getText;
 
+/**
+ * 设备预置位查询应答
+ */
 @Component
 public class PresetQueryResponseMessageHandler extends SIPRequestProcessorParent implements InitializingBean, IMessageHandler {
 
@@ -49,7 +52,11 @@ public class PresetQueryResponseMessageHandler extends SIPRequestProcessorParent
         Element rootElement = null;
         try {
             rootElement = getRootElement(evt, device.getCharset());
-
+            if (rootElement == null) {
+                logger.warn("[ 设备预置位查询应答 ] content cannot be null");
+                responseAck(evt, Response.BAD_REQUEST);
+                return;
+            }
             Element presetListNumElement = rootElement.element("PresetList");
             Element snElement = rootElement.element("SN");
             //该字段可能为通道或则设备的id
@@ -61,11 +68,7 @@ public class PresetQueryResponseMessageHandler extends SIPRequestProcessorParent
             }
             int sumNum = Integer.parseInt(presetListNumElement.attributeValue("Num"));
             List<PresetQuerySipReq> presetQuerySipReqList = new ArrayList<>();
-            if (sumNum == 0) {
-                // 数据无预置位信息
-
-
-            }else {
+            if (sumNum > 0) {
                 for (Iterator<Element> presetIterator =  presetListNumElement.elementIterator();presetIterator.hasNext();){
                     Element itemListElement = presetIterator.next();
                     PresetQuerySipReq presetQuerySipReq = new PresetQuerySipReq();

src/main/java/com/genersoft/iot/vmp/gb28181/transmit/event/request/impl/message/response/cmd/RecordInfoResponseMessageHandler.java

@@ -80,6 +80,10 @@ public class RecordInfoResponseMessageHandler extends SIPRequestProcessorParent
                         try {
                             HandlerCatchData take = taskQueue.poll();
                             Element rootElementForCharset = getRootElement(take.getEvt(), take.getDevice().getCharset());
+                            if (rootElement == null) {
+                                logger.warn("[ 国标录像 ] content cannot be null");
+                                continue;
+                            }
                             String sn = getText(rootElementForCharset, "SN");
                             String channelId = getText(rootElementForCharset, "DeviceID");
                             RecordInfo recordInfo = new RecordInfo();