config/src/main/java/com/alibaba/nacos/config/server/utils/GroupKey.java [50:112]:
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        return sb.toString();
    }
    
    /**
     * Parse the group key.
     */
    public static String[] parseKey(String groupKey) {
        StringBuilder sb = new StringBuilder();
        String dataId = null;
        String group = null;
        String tenant = null;
        
        for (int i = 0; i < groupKey.length(); ++i) {
            char c = groupKey.charAt(i);
            if ('+' == c) {
                if (null == dataId) {
                    dataId = sb.toString();
                    sb.setLength(0);
                } else if (null == group) {
                    group = sb.toString();
                    sb.setLength(0);
                } else {
                    throw new IllegalArgumentException("invalid groupkey:" + groupKey);
                }
            } else if ('%' == c) {
                char next = groupKey.charAt(++i);
                char nextnext = groupKey.charAt(++i);
                if ('2' == next && 'B' == nextnext) {
                    sb.append('+');
                } else if ('2' == next && '5' == nextnext) {
                    sb.append('%');
                } else {
                    throw new IllegalArgumentException("invalid groupkey:" + groupKey);
                }
            } else {
                sb.append(c);
            }
        }
        
        if (StringUtils.isBlank(group)) {
            group = sb.toString();
        } else {
            tenant = sb.toString();
        }
        if (group.length() == 0) {
            throw new IllegalArgumentException("invalid groupkey:" + groupKey);
        }
    
        return new String[] {dataId, group, tenant};
    }
    
    /**
     * + -> %2B % -> %25.
     */
    static void urlEncode(String str, StringBuilder sb) {
        for (int idx = 0; idx < str.length(); ++idx) {
            char c = str.charAt(idx);
            if ('+' == c) {
                sb.append("%2B");
            } else if ('%' == c) {
                sb.append("%25");
            } else {
                sb.append(c);
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config/src/main/java/com/alibaba/nacos/config/server/utils/GroupKey2.java [45:107]:
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        return sb.toString();
    }
    
    /**
     * Parse the group key.
     */
    public static String[] parseKey(String groupKey) {
        StringBuilder sb = new StringBuilder();
        String dataId = null;
        String group = null;
        String tenant = null;
        
        for (int i = 0; i < groupKey.length(); ++i) {
            char c = groupKey.charAt(i);
            if ('+' == c) {
                if (null == dataId) {
                    dataId = sb.toString();
                    sb.setLength(0);
                } else if (null == group) {
                    group = sb.toString();
                    sb.setLength(0);
                } else {
                    throw new IllegalArgumentException("invalid groupkey:" + groupKey);
                }
            } else if ('%' == c) {
                char next = groupKey.charAt(++i);
                char nextnext = groupKey.charAt(++i);
                if ('2' == next && 'B' == nextnext) {
                    sb.append('+');
                } else if ('2' == next && '5' == nextnext) {
                    sb.append('%');
                } else {
                    throw new IllegalArgumentException("invalid groupkey:" + groupKey);
                }
            } else {
                sb.append(c);
            }
        }
        
        if (StringUtils.isBlank(group)) {
            group = sb.toString();
        } else {
            tenant = sb.toString();
        }
        if (group.length() == 0) {
            throw new IllegalArgumentException("invalid groupkey:" + groupKey);
        }
    
        return new String[] {dataId, group, tenant};
    }
    
    /**
     * + -> %2B % -> %25.
     */
    static void urlEncode(String str, StringBuilder sb) {
        for (int idx = 0; idx < str.length(); ++idx) {
            char c = str.charAt(idx);
            if ('+' == c) {
                sb.append("%2B");
            } else if ('%' == c) {
                sb.append("%25");
            } else {
                sb.append(c);
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