Springboot read configuration file problem

I wrote the following configuration in application.yml:

projectConfig:
    code: 0048

read the configuration in java

@Data
public class ProjectConfig{
    private String code;
}

what happens when printing a code of 48.00 instead of 0048 as originally set?

Mar.07,2021

Destiny should be in your own hands!
in order to avoid ambiguity, can't you honestly put in quotation marks?

projectConfig:
    code: '0048'

determined by yml syntax.
if you write 0048 , it will be parsed into numbers by the yml parser.
then push into your @ Data , it becomes 48.00
agrees with the above statement, and
, which is prone to ambiguity, is suggested to include

in quotation marks.
projectConfig:
    code: '0048'
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b30700-2aa5a.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b30700-2aa5a.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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