【正確方法,流程註解清晰】MySQL自定義函式生成隨機身份證號碼
阿新 • • 發佈：2019-01-20
有需要用MySQL生成隨機身份證號碼，沒有在網上搜到，於是自己寫了下。年前寫了一部分，年後營養豐富後在曠工一天後活力滿滿，一鼓作氣的寫成了。
其中完全按照【身份證演算法】實現，也將實現步驟拆成了獨立的函式，清晰的解釋了方法功能，對步驟進行了一定講解，但是還有可以優化的地方，這就靠聰明的你去做吧！
首先我們需要了解“身份證演算法”實現方式，如圖
編寫實現生成身份證號碼MySQL自定義函式的第一個子函式：
getAddressCode() - 獲得地址碼(前六位數），
複製下面程式碼即可，其中：
func_get_split_string_total方法是用來【獲得所有以“某個符號“分割的字串的個數】（網上找的現成的，作者佚名）
CREATE DEFINER=`root`@`localhost` FUNCTION `func_get_split_string_total`( f_string VARCHAR ( 2000000 ), f_delimiter VARCHAR ( 5 ) ) RETURNS int(11)
BEGIN
# 獲得所有以“某個符號“分割的字串的個數
RETURN 1 + ( length( f_string ) - length( REPLACE ( f_string, f_delimiter, '' ) ) );
ENDCREATE DEFINER=`root`@`localhost` FUNCTION `func_get_split_string`( f_string VARCHAR ( 2000000 ), f_delimiter VARCHAR ( 5 ), f_order INT ) RETURNS varchar(255) CHARSET utf8 BEGIN -- 將字串按指定方式分割，獲取指定位置的數 DECLARE result VARCHAR ( 255 ) DEFAULT ''; SET result = reverse( substring_index( reverse( substring_index( f_string, f_delimiter, f_order ) ), f_delimiter, 1 ) ); RETURN result; END
CREATE DEFINER=`root`@`localhost` FUNCTION `getAddressCode`() RETURNS int(11)
BEGIN
#方法說明： 獲取隨機6位地址碼
#地址碼(前六位數） 表示編碼物件常住戶口所在縣(市、旗、區)的行政區劃程式碼，按GB/T2260的規定執行。
#網上搜索地址碼，提供獲取地址：http://www.360doc.com/content/12/0926/15/6536154_238275168.shtml
#注意字串大小要儘可能大
declare regions varchar(2000000) default 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611022,611023,611024,611025,611026,620101,620102,620103,620104,620105,620111,620121,620122,620123,620201,620301,620302,620321,620401,620402,620403,620421,620422,620423,620501,620502,620503,620521,620522,620523,620524,620525,620601,620602,620621,620622,620623,620701,620702,620721,620722,620723,620724,620725,620801,620802,620821,620822,620823,620824,620825,620826,620901,620902,620921,620922,620923,620924,620981,620982,621001,621002,621021,621022,621023,621024,621025,621026,621027,621101,621102,621121,621122,621123,621124,621125,621126,621201,621202,621221,621222,621223,621224,621225,621226,621227,621228,622901,622921,622922,622923,622924,622925,622926,622927,623001,623021,623022,623023,623024,623025,623026,623027,630101,630102,630103,630104,630105,630121,630122,630123,632121,632122,632123,632126,632127,632128,632221,632222,632223,632224,632321,632322,632323,632324,632521,632522,632523,632524,632525,632621,632622,632623,632624,632625,632626,632721,632722,632723,632724,632725,632726,632801,632802,632821,632822,632823,640101,640104,640105,640106,640121,640122,640181,640201,640202,640205,640221,640301,640302,640303,640323,640324,640381,640401,640402,640422,640423,640424,640425,640501,640502,640521,640522,650101,650102,650103,650104,650105,650106,650107,650109,650121,650201,650202,650203,650204,650205,652101,652122,652123,652201,652222,652223,652301,652302,652323,652324,652325,652327,652328,652701,652722,652723,652801,652822,652823,652824,652825,652826,652827,652828,652829,652901,652922,652923,652924,652925,652926,652927,652928,652929,653001,653022,653023,653024,653101,653121,653122,653123,653124,653125,653126,653127,653128,653129,653130,653131,653201,653221,653222,653223,653224,653225,653226,653227,654002,654003,654021,654022,654023,654024,654025,654026,654027,654028,654201,654202,654221,654223,654224,654225,654226,654301,654321,654322,654323,654324,654325,654326,659001,659002,659003,659004,710000,810000,820000';
declare cnt int default 0; #regions全國地區編碼個數
declare xw int default 0; #隨機的地區編碼在regions中的位置
declare region varchar(10); #隨機出來的地區編碼
set cnt = func_get_split_string_total(regions, ',');
set xw = FLOOR(RAND() * cnt + 1) ; #位置
set region = func_get_split_string(regions, ',', xw);
RETURN region;
END編寫實現生成身份證號碼MySQL函式的第二個子函式：
getBirthDateCode(起始年， 終點年) - 生成隨機出生日期碼（8位）
其中：isLeapYear（pYear）是用來判斷年份是否為閏年
CREATE DEFINER=`root`@`localhost` FUNCTION `isLeapYear`(pYear int(11)) RETURNS int(11)
BEGIN
#方法說明： 判斷引數年份是否為閏年（0不是，1是閏年）
declare isLeap int default 0; # 0不是，1是閏年
#普通年能被4整除且不能被100整除的為閏年(如2012年就是閏年,2013年不是閏年)
#世紀年能被400整除的是閏年(如2000年是閏年,1900年不是閏年)
if pYear % 4 = 0 and pYear % 100 <> 0 or pYear % 400 = 0 then
set isLeap = 1;
end if;
RETURN isLeap;
ENDCREATE DEFINER=`root`@`localhost` FUNCTION `getBirthDateCode`(beginYear int, endYear int) RETURNS varchar(8) CHARSET utf8
BEGIN
#方法說明： 獲取隨機8位生日（從beginYear 到 endYear內的）如：1950 - 2008
#出生日期碼（第七位至十四位） 表示編碼物件出生的年、月、日，按GB/T7408的規定執行，年、月、日程式碼之間不用分隔符。
# 輸出格式為 19920808， 未計算二月，閏年
DECLARE yr int default 0; # 年份
DECLARE mh int default 0; # 月份（無前導0）
DECLARE mhs varchar(2) default ''; #月份（加前導0）
DECLARE isLeap int default 0; # 是否為閏年（0不是，1是閏年）
DECLARE dys int default 31; # 當月天數
declare dy int; #當月某天(無前導0）
declare ddy varchar(2) default '00'; #某天（加前導0）
DECLARE result VARCHAR (8) DEFAULT '20001212';
# 獲得隨機年份：取x~y之間的隨機數 floor(rand() * (y - x) + x) 等方法
set yr = floor(RAND() * (endYear - beginYear) + beginYear);
# 獲得隨機月份
set mh = floor(RAND() * 12 + 1);
#判斷是否需要加前導0
if mh < 10 then
set mhs = CONCAT('0', mh);
else
set mhs = concat('', mh);
end if;
#計算平閏年
set isLeap = isLeapYear(yr);
#根據月份獲得這個月有多少天
case mh
when 1 then
set dys = 31;
when 2 then
if isLeap = 0 then
set dys = 29;
else
set dys = 28;
end if;
when 3 then set dys = 31;
when 4 then set dys = 30;
when 5 then set dys = 31;
when 6 then set dys = 30;
when 7 then set dys = 31;
when 8 then set dys = 31;
when 9 then set dys = 30;
when 10 then set dys = 31;
when 11 then set dys = 30;
when 12 then set dys = 31;
end case;
#隨機獲得這個月內的某天
set dy = floor(rand() * dys + 1);
#判斷是否需要加前導0
if dy < 10 then
set ddy = CONCAT('0', dy);
else
set ddy = concat('', dy);
end if;
#合併結果
set result = CONCAT(yr, mhs, ddy);
RETURN result;
END編寫實現生成身份證號碼MySQL函式的第三個子函式：
getRegId(身份證號碼前17位) - 獲得最後一位校驗碼
具體說明在其中註釋了已經，請仔細查閱。
CREATE DEFINER=`root`@`localhost` FUNCTION `getRegId`(cid varchar(20)) RETURNS varchar(200) CHARSET utf8
BEGIN
#方法說明： 獲取身份證號碼最後一位校檢碼
#第十八位數字(校驗碼)的計算方法為：
# 1.將前面的身份證號碼17位數分別乘以不同的係數。從第一位到第十七位的係數分別為：7 9 10 5 8 4 2 1 6 3 7 9 10 5 8 4 2
# 2.將這17位數字和係數相乘的結果相加。
# 3.用加出來和除以11，看餘數是多少？
# 4.餘數只可能有0 1 2 3 4 5 6 7 8 9 10這11個數字。其分別對應的最後一位身份證的號碼為1 0 X 9 8 7 6 5 4 3 2。
# 5.通過上面得知如果餘數是2，就會在身份證的第18位數字上出現羅馬數字的Ⅹ。如果餘數是10，身份證的最後一位號碼就是2。
declare regIdCard varchar(100);
declare idf varchar(2) default '1'; #身份證號某個數字
declare qf varchar(2) default '1'; # 加權因子中的某個係數
declare tt int default 0; #加權總分
declare i int default 1; #遍歷引數
declare ys int default 1; #餘數
declare rss varchar(100); # 校驗碼陣列
declare rt varchar(2); #輸出結果
set regIdCard = '7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2';
#將前17位加權因子儲存在數組裡
set rss = '1,0,X,9,8,7,6,5,4,3,2';
while i < 18 do
set idf = substring(cid, i, 1);
set qf = func_get_split_string(regIdCard, ',', i);
set tt = tt + (idf + 0) * (qf + 0);
set i = i + 1;
end while;
#計算餘數
set ys = mod(tt, 11);
#獲得最終的校驗碼
set rt = func_get_split_string(rss, ',', ys + 1);
RETURN rt;
ENDCREATE DEFINER=`root`@`localhost` FUNCTION `getRandID`() RETURNS varchar(18) CHARSET utf8
BEGIN
#生成隨機身份證號碼函式getRandID()
#身份證演算法實現
#
#@@1、號碼的結構 公民身份號碼是特徵組合碼，
# 由十七位數字本體碼和一位校驗碼組成。
# 排列順序從左至右依次為：六位數字地址碼，八位數字出生日期碼 三位數字順序碼和一位數字校驗碼。
#
#@@2、地址碼(前六位數） 表示編碼物件常住戶口所在縣(市、旗、區)的行政區劃程式碼，按GB/T2260的規定執行。
#
#@@3、出生日期碼（第七位至十四位） 表示編碼物件出生的年、月、日，按GB/T7408的規定執行，年、月、日程式碼之間不用分隔符。
#
#@@4、順序碼（第十五位至十七位）
# 表示在同一地址碼所標識的區域範圍內，對同年、同月、同日出生的人編定的順序號，順序碼的奇數分配給男性，偶數分配給女性。
#
#@@5、校驗碼（第十八位數）
# （1）十七位數字本體碼加權求和公式 S = Sum(Ai #Wi), i = 0, ... , 16
# ，先對前17位數字的權求和
# Ai:表示第i位置上的身份證號碼數字值
# Wi:表示第i位置上的加權因子 Wi: 7 9 10 5 8 4 2 1 6 3 7 9 10 5 8 4 2
# （2）計算模 Y = mod(S, 11)
# （3）通過模得到對應的校驗碼 Y: 0 1 2 3 4 5 6 7 8 9 10
# 校驗碼: 1 0 X 9 8 7 6 5 4 3 2
declare region varchar(10); #隨機出來的地區編碼
declare ymd varchar(10); #出生年月日
declare sno varchar (3); #順序號
declare id17 varchar(17);
declare lsn varchar(1); #最後一位校檢碼
declare id varchar(18); #輸出身份證號碼
set region = getAddressCode();
#-----------------以上獲取6位地區編碼---------------
set ymd = getBirthDateCode(1950, 2000); # 1950年 ~ 2000年
#-----------------以上獲得8位出生年月日---------------
set sno = FLOOR(RAND() * 899 + 100);
#-----------------以上獲得3位順序碼---------------
#合併前17位身份證號碼
set id17 = CONCAT(region, ymd, sno);
#獲取最後一位
set lsn = getRegId(id17);
#-----------------以上獲得最後一位校檢碼---------------
set id = CONCAT(id17, lsn);
#-----------------以上獲得最終身份證號碼---------------
RETURN id;
END
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