修复

@@ -177,6 +177,17 @@ public class HostInfoServiceImpl implements IHostInfoService {
     @Override
     public BaseResponse<Integer> saveHostInfo(HostInfo req) {
         int result=0;
+        //保证tags以逗号结尾
+        String newTags=req.getTags();
+        if(newTags!=null){
+            newTags = newTags.trim();
+            if(newTags.length()>0&&!newTags.endsWith(",")){
+                newTags += ",";
+            }
+            req.setTags(newTags);
+        }
+
+
         if(req.getId()>0){
             result=hostInfoMapper.updateByPrimaryKey(req);
         }else{

@@ -326,7 +326,7 @@ public class Pch5SwitchCtrl {
         List<HostInfo> ls=hostInfoService.getHostInfosByTagList(Arrays.asList(const_tags_for_nginx_node_az2.split(",")));
         if(ls!=null){
             for(HostInfo hostInfo:ls){
-                if(!newTags.endsWith(",")){
+                if(newTags!=null&&newTags.length()>0&&!newTags.endsWith(",")){
                     newTags += ",";
                 }
                 hostInfo.setTags(newTags);