/*
 * Copyright 1999-2018 Alibaba Group Holding Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.alibaba.nacos.api.naming.utils;

import com.alibaba.nacos.api.common.Constants;

/**
 * @author nkorange
 * @since 1.0.0
 */
public class NamingUtils {

    public static String getGroupedName(String serviceName, String groupName) {
        return groupName + Constants.SERVICE_INFO_SPLITER + serviceName;
    }

    public static String getServiceName(String serviceNameWithGroup) {
        if (!serviceNameWithGroup.contains(Constants.SERVICE_INFO_SPLITER)) {
            return serviceNameWithGroup;
        }
        return serviceNameWithGroup.split(Constants.SERVICE_INFO_SPLITER)[1];
    }

    public static String getGroupName(String serviceNameWithGroup) {
        if (!serviceNameWithGroup.contains(Constants.SERVICE_INFO_SPLITER)) {
            return Constants.DEFAULT_GROUP;
        }
        return serviceNameWithGroup.split(Constants.SERVICE_INFO_SPLITER)[0];
    }
}

@@ -866,71 +866,231 @@
     
-return groupName + Constants.SERVICE_INFO_SPLITER + serviceName
+StringBuilder resultGroupedName = new StringBuilder()%0A            .append(groupName)%0A            .append(Constants.SERVICE_INFO_SPLITER)%0A            .append(serviceName);%0A        return resultGroupedName.toString().intern()
 ;%0A  

Modify the string splicing method of getgroupedname()