确保项目中application.yml中的spring.cloud.alibaba.seata.tx-service-group属性要和file.conf文件的vgroupMapping属性的后缀相同。
举个例子：
# application.yml
spring:
cloud:
alibaba:
seata:
tx-service-group: test-fescar-service-group
# file.conf
service {
vgroupMapping.test-fescar-service-group = "default"
}