You can change this value on the server by setting the 'Max_ allowed_ Packet 'variable error

Error message ：

Unsatisfied dependency expressed through field 'jobService';  nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sysJobServiceImpl': Invocation of init method failed;  nested exception is org.quartz.JobPersistenceException: Couldn't store job: Packet for query is too large (2,128 > 1,024).  You can change this value on the server by setting the 'max_allowed_packet' variable.  [See nested exception: com.mysql.cj.jdbc.exceptions.PacketTooBigException: Packet for query is too large (2,128 > 1,024).  You can change this value on the server by setting the 'max_allowed_packet' variable

mysql This thing in the database is smaller than the loading data

You can enter a statement to view ：show VARIABLES like '%max_allowed_packet%';　 Inquire about  value

resolvent ： 

  The first one is ：

Set the default value to １０M：set global max_allowed_packet = 5*1024*1024;

Exit the command line , restart mysql service , Enter again . that will do

The second kind ：

If you restore the default settings ：

modify my.ini   stay [mysqld] Paragraph or mysql Of server Modify the configuration section .（ Ultimate modification , Restart the database after modification , permanent ）

　　 as follows : max_allowed_packet = 5M