优化这段代码 public void c2_6ResChange(ParentPlatform parentPlatform, String type, String channelCodeStr, RealmonitorDeviceChannel realmonitorDeviceChannel) { try { Request request; String tm = Long.toString(System.currentTimeMillis()); CallIdHeader callIdHeader = null; if (parentPlatform.getTransport().equals("TCP")) { callIdHeader = tcpSipProvider.getNewCallId(); } if (parentPlatform.getTransport().equals("UDP")) { callIdHeader = udpSipProvider.getNewCallId(); } Long data = remoteDataCacheService.getCSEQ(Request.REGISTER).getData(); List<C2_6Req_Resources> c2_6Req_resourcesList = new ArrayList<>(); if ("DELETE".equals(type)) { c2_6Req_resourcesList = Arrays.stream(channelCodeStr.split(",")).map(C2_6Req_Resources::new).collect(Collectors.toList()); } else { c2_6Req_resourcesList.add(new C2_6Req_Resources(realmonitorDeviceChannel)); } C2_6Req_ResChange c2_6Req_resChange = new C2_6Req_ResChange(); c2_6Req_resChange.setResources(c2_6Req_resourcesList); String result = RequestUtils.getXmlRequest(c2_6Req_resChange, "ResChange", true, null); request = headerProviderPlarformProvider.createMessageRequest(parentPlatform, result, data, tm, callIdHeader); transmitRequest(parentPlatform, request, null, null); } catch (ParseException | InvalidArgumentException | PeerUnavailableException e) { e.printStackTrace(); } catch (SipException e) { e.printStackTrace(); } }

可以尝试进行以下优化：

1. 使用常量代替字符串字面量，例如：将 "TCP" 和 "UDP" 定义为常量。

2. 避免重复的判断，可以将 parentPlatform.getTransport() 的结果存储到一个变量中，避免重复调用。

3. 将 try-catch 块分离，这样可以更好地处理异常：

public void c2_6ResChange(ParentPlatform parentPlatform, String type, String channelCodeStr, RealmonitorDeviceChannel realmonitorDeviceChannel) {
    Request request;
    String tm = Long.toString(System.currentTimeMillis());
    CallIdHeader callIdHeader = null;
    SipProvider sipProvider = null;
    if ("TCP".equals(transport)) {
        sipProvider = tcpSipProvider;
    } else if ("UDP".equals(transport)) {
        sipProvider = udpSipProvider;
    }
    try {
        callIdHeader = sipProvider.getNewCallId();
    } catch (PeerUnavailableException e) {
        e.printStackTrace();
    }
    try {
        Long data = remoteDataCacheService.getCSEQ(Request.REGISTER).getData();
        List<C2_6Req_Resources> c2_6Req_resourcesList = new ArrayList<>();
        if ("DELETE".equals(type)) {
            c2_6Req_resourcesList = Arrays.stream(channelCodeStr.split(",")).map(C2_6Req_Resources::new).collect(Collectors.toList());
        } else {
            c2_6Req_resourcesList.add(new C2_6Req_Resources(realmonitorDeviceChannel));
        }
        C2_6Req_ResChange c2_6Req_resChange = new C2_6Req_ResChange();
        c2_6Req_resChange.setResources(c2_6Req_resourcesList);
        String result = RequestUtils.getXmlRequest(c2_6Req_resChange, "ResChange", true, null);
        request = headerProviderPlarformProvider.createMessageRequest(parentPlatform, result, data, tm, callIdHeader);
        transmitRequest(parentPlatform, request, null, null);
    } catch (ParseException | InvalidArgumentException | SipException e) {
        e.printStackTrace();
    }
}