jpa 查询 带下划线

添加jpa策略

spring:
    jpa:
       hibernate:
          naming:
            physical-strategy: org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl
       database: mysql

两种策略的含义：

//1.PhysicalNamingStrategyStandardImpl：不做修改，直接映射
spring.jpa.hibernate.naming.physical-strategy=org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl
 
//2.SpringPhysicalNamingStrategy:在进行领域映射时,首字母小写，大写字母变为下划线加小写
//ex: LoginName --> login_name
spring.jpa.hibernate.naming.physical-strategy=org.springframework.boot.orm.jpa.hibernate.SpringPhysicalNamingStrategy