java中List轉字符串逗號隔開且帶單引號字符串

1.將List<String>集合 轉化爲'1','2','3',

   /**
     * 將List<String>集合 轉化爲帶引號的String
     * 如{"1","2"} To '1','2'
     *
     * @param strList 入參
     * @return String
     */
    public static String convertListToString(List<String> strList) {
        StringBuffer sb = new StringBuffer();
        if (CollectionUtils.isNotEmpty(strlist)) {
            for (int i = 0; i < strList.size(); i++) {
                if (i == 0) {
                    sb.append("'").append(strList.get(i)).append("'");
                } else {
                    sb.append(",").append("'").append(strList.get(i)).append("'");
                }
            }
        }
        return sb.toString();

    }

 2.將"1,2,3,..."這種形式的字符串轉成List<String> 集合

   /**
     * 將"1,2,3,..."這種形式的字符串轉成List<String> 集合
     *
     * @param strs 入參
     * @return list
     */

    public static List<String> converStringToList(String strs) {
        if (StringUtils.isNotBlank(strs)) {
            String[] idStrs = strs.trim().split(",");
            if (idStrs.length > 0) {
                List<String> strsList = new ArrayList<String>();
                for (String str : idStrs) {
                    if (StringUtils.isNotBlank(str)) {
                        strsList.add(str.trim());
                    }
                }
                if (strsList.size() > 0) {
                    return strsList;
                }
            }
        }
        return null;
    }

3. 將"1,2,3,..."這種形式的字符串轉成"'1','2','3',..."這種形式

   /**
     * 將"1,2,3,..."這種形式的字符串轉成"'1','2','3',..."這種形式
     *
     * @param strs 入參
     * @return string
     */
    public static String converString(String strs) {
        if (StringUtils.isNotBlank(strs)) {
            String[] idStrs = strs.trim().split(",");
            if (idStrs.length > 0) {
                StringBuffer sbf = new StringBuffer("");
                for (String str : idStrs) {
                    if (StringUtils.isNotBlank(str)) {
                        sbf.append("'").append(str.trim()).append("'").append(",");
                    }
                }
                if (sbf.length() > 0) {
                    sbf = sbf.deleteCharAt(sbf.length() - 1);
                    return sbf.toString();
                }
            }
        }
        return "";

    }