The number of rows returned by the mybatis UPDATE statement is always 1 or useaffectedrows = true

Problem solving explanation useaffectedrows = true

solve the problem

     This is because the database url connection is missing useAffectedRows=true

 The problem is solved here, but I'll explain it later useAffectedRows=true.

Explain useaffectedrows = true

 useAffectedRows defaults to false, and the value returned is the number of rows matched.
    useAffectedRows = true, the value returned is the number of rows affected.