字符串转化为toList

certNameList = "certNameList": "消防设施工程专业承包二级,地基基础工程专业承包一级,电子与智能化工程专业承包一级,建筑装修装饰工程专业承包一级,建筑幕墙工程专业承包一级",

for (EntQualificationVO vo : entQualificationVOList) {
                String certNameList = vo.getCertNames();
                List result = Arrays.asList(certNameList.split(","));
                vo.setCertNameList(result);
            }

结果： "certNameList": [
"消防设施工程专业承包二级",
"地基基础工程专业承包一级",
"电子与智能化工程专业承包一级",
"建筑装修装饰工程专业承包一级",
"建筑幕墙工程专业承包一级"
]

  public static void main(String[] args) {
        // 1、字符串转为List<String>
        List<String> resultList = Arrays.asList("1", "2", "3");
        System.out.println("方法一");
        resultList.forEach(e -> {
            System.out.print(e + " ");
        });
        System.out.println("");
        System.out.println("方法二");
        String msg = "4,5,6";
        // 2、字符串转为List<String>
        List<String> msgList = Arrays.asList(msg.split(","));
        msgList.forEach(e -> {
            System.out.print(e + " ");
        });
        System.out.println("");
        // 3、List<String>转String
        List<String> msgList2 = new ArrayList<>();
        msgList2.add("a");
        msgList2.add("b");
        msgList2.add("c");
        String msg2 = String.join(",", msgList2);
        System.out.println("msg2=" + msg2);

        String certNameList = "消防设施工程专业承包二级,地基基础工程专业承包一级,电子与智能化工程专业承包一级,建筑装修装饰工程专业承包一级,建筑幕墙工程专业承包一级";
        List result = null;
        for (int i = 0; i < certNameList.length(); i++) {
            result = Arrays.asList(certNameList.split(","));
        }
        System.out.println(result);
    }