java将字符串按照指定长度分割成字符串数组

 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;
    }