Mount failed, permission deny

[Jasons001]

i encounter this error： mount failure, server: 100.88.99.9, export: /mnt/share, nfs version: 3, returned state: 13, when i run jar to visit nfs-server shared file with work user privilege,how can i solve this problem, i access nfs-server shared file with root user privilege successfully.
But I have to execute this jar with work user privileges, please tell me how to do this

[Jasons001]

I get, need to change the value of /etc/exports,
the configuration before modification is /mnt/share 10.6.0.19/24(rw,sync,insecure,no_subtree_check,no_root_squash)
then change 10.6.0.19/24 to *, that means every host can access this server