VirtualBox VirtualBox 挂接 USB 报错 : Failed to create a proxy device for the USB device. (Error: VERR_SHARING_VIOLATION). 2024年3月26日 问题: VirtualBox 挂接 USB 报错 [crayon-663afbacb579c507898792… Read More
Selenuim 、 PhantomJS 、puppeteer 更好的替代品 2023年12月11日 问题: puppeteer 能较好操作 chrome ,有没有更好替代品呢? 解决: https… Read More
JPA Resolved [java.lang.IllegalArgumentException: Id must be assignable to Serializable: null] 2023年12月8日 问题: JPA Entity 如下 @Table (name= "EMP") @Inheritance @DiscriminatorColumn (name="EMP TPE") public abstract class Employee {...} @Entity @DiscriminatorValue ("CEmp") public class contractemployee extenas Employee{...} @MappedSuperclass public abstract class CompanyEmployee extends Employee {...} @Entity @DiscriminatorValue ("FTEmp") public class FullTimeEmployee extenas companyemployee {....} @Entity (name= "PTEmp") public class PartTimeEmployee extends CompanyEmployee {....} 123456789101112131415161718 @Table (name= "EMP") @Inheritance@DiscriminatorColumn (name="EMP TPE") public abstract class Employee {...} @Entity@DiscriminatorValue ("CEmp")public class contractemployee extenas Employee{...} @MappedSuperclasspublic abstract class CompanyEmployee extends Employee {...} @Entity@DiscriminatorValue ("FTEmp")public class FullTimeEmployee extenas companyemployee {....} @Entity (name= "PTEmp")public class PartTimeEmployee extends CompanyEmployee {....} &nbs… Read More
SpringBoot Caused by: com.mysql.cj.exceptions.ConnectionIsClosedException: No operations allowed after connection closed. 2023年11月18日 问题: spring boot + hikari + mysql [crayon-663afbacb70837… Read More