批量生成连续的n个满足000000~ZZZZZZ(不包含4)的号
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2022-03-03 11:40:30
/** * SN号生成器 */public class RescueSnUtil { /** 救助牌号正则 */ private final static String SN_REGEX = "^[012356789A-Z]{6}$"; /** 救助牌号组成 */ private final static String[] SN_ARR = new String[]{"0","1","2","3","5","6","7","8","9","A","B","C","D"....
/**
* SN号生成器
*/
public class RescueSnUtil {
/** 救助牌号正则 */
private final static String SN_REGEX = "^[012356789A-Z]{6}$";
/** 救助牌号组成 */
private final static String[] SN_ARR = new String[]{"0","1","2","3","5","6","7","8","9","A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"} ;
/** 标准进制串组成 */
private final static String[] STR_ARR = new String[]{"0","1","2","3","4","5","6","7","8","9","A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y"} ;
/** 进制 */
private final static int SN_ARR_LENGTH = SN_ARR.length;
/** 救助号牌长度 */
private final static int SN_LENGTH = 6;
/** 救助号牌对应最大整数 */
private final static int SN_MIN = 0;
/** 救助号牌对应最大整数 */
private final static int SN_MAX = (int)Math.pow(SN_ARR_LENGTH, SN_LENGTH) - 1;
//批量获取救助号
public static synchronized WebResultDTO<String[]> getBatchRescueSign(String currentMaxSn, int delta){
//currentMaxSn,begin
if(StringUtils.isNotEmpty(currentMaxSn) && !currentMaxSn.matches(SN_REGEX)){
return new WebResultDTO(400,ArrayUtils.EMPTY_STRING_ARRAY,"传入的最大救助号格式错误");
}
int currentMax = StringUtils.isEmpty(currentMaxSn)? -1 : convertSnToNum(currentMaxSn);
int begin = currentMax + 1;
if(begin<SN_MIN){
return new WebResultDTO(400,ArrayUtils.EMPTY_STRING_ARRAY,"传入的当前最大救助号格式错误");
}
//delta
if(delta<=0){
return new WebResultDTO(400,ArrayUtils.EMPTY_STRING_ARRAY,"要生成的救助号数量格式错误");
}
//end
int end = currentMax + delta;
if(end>SN_MAX){
return new WebResultDTO(400,ArrayUtils.EMPTY_STRING_ARRAY,"没有足够的救助号");
}
//snArr
String[] snArr = new String[delta];
for(int i=begin;i<=end;i++){
snArr[i-begin] = StringUtils.leftPad(convertNumToSn(i), SN_LENGTH, "0") ;
}
return new WebResultDTO(200,snArr,"批量获取救助号成功");
}
//num转sn
private static String convertNumToSn(int num) {
//num转str
String str = Integer.toString(num, SN_ARR_LENGTH).toUpperCase();
//str转sn
return StringUtils.replaceEach(str,STR_ARR,SN_ARR);
}
//sn转num
private static Integer convertSnToNum(String sn) {
//sn转str
String str = StringUtils.replaceEach(sn,SN_ARR,STR_ARR);
//str转num
return Integer.valueOf(str, SN_ARR_LENGTH);
}
public static void main(String[] args) {
// WebResultDTO dto = getBatchRescueSign("",SN_MAX + 1);
System.out.println(new Date());
WebResultDTO dto = getBatchRescueSign("",10000);
System.out.println(new Date());
// WebResultDTO dto = getBatchRescueSign(null,33);
// WebResultDTO dto = getBatchRescueSign("",2);
System.out.println(dto.getStatus());
System.out.println(dto.getMsg());
System.out.println(StringUtils.join(Arrays.asList((String[])dto.getData())));
}
}
本文地址:https://blog.csdn.net/xx897115293/article/details/112003423