List<String> ipList = new ArrayList<String>();
String url = MsbConfiguration.getMsbAddress()+Constant.MSBAPIROOTDOMAIN+"/"+serviceName+"/version/"+version;
String response = HttpClientUtil.doGet(url, Constant.ENCODING_UTF8);
- if(!response.equals("")){
+ if(response !=null && !"".equals(response)){
MsbRegisterVo msbRegisterVo = JSON.parseObject(response,MsbRegisterVo.class);
List<ServiceNodeVo> nodeList = msbRegisterVo.getNodes();