处理可能会出现的空指针异常

pei

2024-03-29 728e60ce8431fe5a70e44a1da2d4835425ce83a5

处理可能会出现的空指针异常

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

@@ -37,7 +37,7 @@

    private final String method = "MESSAGE";

    private static Map<String, IMessageHandler> messageHandlerMap = new ConcurrentHashMap<>();
    private static final Map<String, IMessageHandler> messageHandlerMap = new ConcurrentHashMap<>();

    @Autowired
    private SIPProcessorObserver sipProcessorObserver;
@@ -100,20 +100,15 @@
                    deviceNotFoundEvent.setCallId(callIdHeader.getCallId());
                    SipSubscribe.EventResult eventResult = new SipSubscribe.EventResult(deviceNotFoundEvent);
                    sipSubscribe.getErrorSubscribe(callIdHeader.getCallId()).response(eventResult);
                };
                }
            }else {
                Element rootElement = null;
                Element rootElement;
                try {
                    rootElement = getRootElement(evt);
                    if (rootElement == null) {
                        logger.error("处理MESSAGE请求  未获取到消息体{}", evt.getRequest());
                        responseAck(request, Response.BAD_REQUEST, "content is null");
                        return;
                    }
                } catch (DocumentException e) {
                    logger.warn("解析XML消息内容异常", e);
                    // 不存在则回复404
                    responseAck(request, Response.BAD_REQUEST, e.getMessage());
                }
                String name = rootElement.getName();
                IMessageHandler messageHandler = messageHandlerMap.get(name);
@@ -128,6 +123,11 @@
                    // 不存在则回复415
                    responseAck(request, Response.UNSUPPORTED_MEDIA_TYPE, "Unsupported message type, must Control/Notify/Query/Response");
                }
                } catch (DocumentException e) {
                    logger.warn("解析XML消息内容异常", e);
                    // 不存在则回复404
                    responseAck(request, Response.BAD_REQUEST, e.getMessage());
                }
            }
        } catch (SipException e) {
            logger.warn("SIP 回复错误", e);