Spring boot online modify page template update immediately?

spring boot is packaged into jar to start, is there any way to modify the page template to update immediately, do not restart, do not do any other operation?
if I PHP modified the template, it will take effect immediately.

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-64f5-1e96872-15e4.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e96872-15e4.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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