MySQL，java添加字符串数据时，比如“001”这个字符串，添加后前面的0没了，只剩下"1"

单独写个insert 语句('001') 直接运行，看能否保存进去 ，如果可以的话 ，就是java代码有问题，如果不行，看一下字段是否配置的有问题，varchar 型理论上是可行的

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DELIMITER

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DROP FUNCTION IF EXISTS urlencode

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DELIMITER |

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CREATE FUNCTION urlencode (s VARCHAR(4096)) RETURNS VARCHAR(4096)08.

DETERMINISTIC

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CONTAINS SQL

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BEGIN

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DECLARE c VARCHAR(4096) DEFAULT ''

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DECLARE pointer INT DEFAULT 1

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DECLARE s2 VARCHAR(4096) DEFAULT ''

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IF ISNULL(s) THEN

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RETURN NULL

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ELSE

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SET s2 = ''

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WHILE pointer <= length(s) DO

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SET c = MID(s,pointer,1)

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IF c = ' ' THEN

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SET c = '+'

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ELSEIF NOT (ASCII(c) BETWEEN 48 AND 57 OR24.

ASCII(c) BETWEEN 65 AND 90 OR

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ASCII(c) BETWEEN 97 AND 122) THEN

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SET c = concat("%",LPAD(CONV(ASCII(c),10,16),2,0))27.

END IF

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SET s2 = CONCAT(s2,c)

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SET pointer = pointer + 1

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END while

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END IF

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RETURN s2

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END

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|

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DELIMITER

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DROP FUNCTION IF EXISTS urldecode

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DELIMITER |

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CREATE FUNCTION urldecode (s VARCHAR(4096)) RETURNS VARCHAR(4096)06.

DETERMINISTIC

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CONTAINS SQL

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BEGIN

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DECLARE c VARCHAR(4096) DEFAULT ''

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DECLARE pointer INT DEFAULT 1

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DECLARE h CHAR(2)

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DECLARE h1 CHAR(1)

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DECLARE h2 CHAR(1)

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DECLARE s2 VARCHAR(4096) DEFAULT ''

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IF ISNULL(s) THEN

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RETURN NULL

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ELSE

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SET s2 = ''

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WHILE pointer <= LENGTH(s) DO

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SET c = MID(s,pointer,1)

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IF c = '+' THEN

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SET c = ' '

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ELSEIF c = '%' AND pointer + 2 <= LENGTH(s) THEN25.

SET h1 = LOWER(MID(s,pointer+1,1))

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SET h2 = LOWER(MID(s,pointer+2,1))

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IF (h1 BETWEEN '0' AND '9' OR h1 BETWEEN 'a' AND 'f')28.

AND

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(h2 BETWEEN '0' AND '9' OR h2 BETWEEN 'a' AND 'f')30.

THEN

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SET h = CONCAT(h1,h2)

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SET pointer = pointer + 2

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SET c = CHAR(CONV(h,16,10))

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END IF

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END IF

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SET s2 = CONCAT(s2,c)

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SET pointer = pointer + 1

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END while

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END IF

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RETURN s2

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END

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|

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DELIMITER

当一个字符串经过多次 urlencode 处理之后，可以使用 multiurldecode来解码，它将多次调用 urldecode来解码，直到没有需要解码的字符www.it165.net

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DELIMITER

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DROP FUNCTION IF EXISTS multiurldecode

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DELIMITER |

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CREATE FUNCTION multiurldecode (s VARCHAR(4096)) RETURNS VARCHAR(4096)08.

DETERMINISTIC

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CONTAINS SQL

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BEGIN

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DECLARE pr VARCHAR(4096) DEFAULT ''

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IF ISNULL(s) THEN

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RETURN NULL

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END IF

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REPEAT

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SET pr = s

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SELECT urldecode(s) INTO s

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UNTIL pr = s END REPEAT

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RETURN s

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END

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|

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DELIMITER

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