springcloud-jpa-seata项目跑不起来，报参数异常错误

springcloud-jpa-seata项目启动报参数异常错误，IllegalArgumentException: endpoint format should like ip:port
服务注册不到seataserver，修改了vgroupMapping.my_test_tx_group为服务的applicationname也没用，default.grouplist也修改成内网地址，localhost，或者127，都不可以。
用同样的方式跑springboot-mybatis项目 可以跑起来，事务操作也能正常回滚

Start by running the springcloud-jpa-seata sample and capture the IllegalArgumentException about endpoint format. Inspect the configuration for vgroupMapping.my_test_tx_group and default.grouplist, then compare it with the working springboot-mybatis sample. Done means the sample starts, registers with the Seata server, and its transaction operations roll back correctly.

Written by the indexing model from the issue text.