java实现将一个字符串集合，如果集合长度大于900，将集合元素每900个通过逗号拼接为一个字符串，插入进String类型的List中，如果不大于，将所有的元素通过逗号拼接为一个字符串，插入String类型的List中返回

public static List<String> splitString(List<String> inputList) {
    List<String> resultList = new ArrayList<>();
    StringBuilder stringBuilder = new StringBuilder();
    int size = inputList.size();
    if (size > 0) {
        if (size > 900) {
            for (int i = 0; i < size; i++) {
                stringBuilder.append(inputList.get(i));
                if ((i + 1) % 900 == 0) {
                    resultList.add(stringBuilder.toString());
                    stringBuilder = new StringBuilder();
                } else {
                    stringBuilder.append(",");
                }
            }
            if (stringBuilder.length() > 0) {
                resultList.add(stringBuilder.toString());
            }
        } else {
            for (int i = 0; i < size; i++) {
                stringBuilder.append(inputList.get(i)).append(",");
            }
            if (stringBuilder.length() > 0) {
                stringBuilder.deleteCharAt(stringBuilder.length() - 1);
            }
            resultList.add(stringBuilder.toString());
        }
    }
    return resultList;
}