把list轉換為一個用逗號分隔的字符串

　　/**
     * 把list轉換為一個用逗號分隔的字符串
     */
    public static String listToString(List<EntityDicAO> list) {
        String result = null;
        if (list != null && list.size() > 0) {
            StringBuilder sb = new StringBuilder();
            for (int i = 0; i < list.size(); i++) {
                if (i < list.size() - 1) {
                    sb.append(list.get(i).getName() + "，");
                } else {
                    sb.append(list.get(i).getName());
                }
            }
            result = sb.toString();
        }
        return result;
    }