java 工具类 将字符串按照指定长度分割成字符串数组

import cn.hutool.core.util.StrUtil;

import java.util.Arrays;

/**
 * @author: 我自己
 * @create: 2022-09-20 13:57
 * @description:
 */
public class T5 {
    public static void main(String[] args) {
        //测试数据
        String data = "40040001016216860D";
        //输出[40, 04, 00, 01, 01, 62, 16, 86, 0D]
        System.out.println(Arrays.asList(stringToStringArray(data, 3)));
        System.out.println(Arrays.asList(StrUtil.cut(data, 3)));
    }

    /**
     * 将字符串按照指定长度分割成字符串数组
     *
     * @param src
     * @param length
     * @return
     */
    public static String[] stringToStringArray(String src, int length) {
        //检查参数是否合法
        if (null == src || src.equals("")) {
            return null;
        }

        if (length <= 0) {
            return null;
        }
        int n = (src.length() + length - 1) / length; //获取整个字符串可以被切割成字符子串的个数
        String[] split = new String[n];
        for (int i = 0; i < n; i++) {
            if (i < (n - 1)) {
                split[i] = src.substring(i * length, (i + 1) * length);
            } else {
                split[i] = src.substring(i * length);
            }
        }
        return split;
    }

}