安装程序: Spring '2.4.1‘应用程序,(hibernate 5.4.25),Java 11
问题如何使用java.time*保存日期(德文时间),以便使运行时= db
问题
调试期间: ZonedDateTime = 2021-05-03 16:11:42.021236
DB: Datetime(6) 2021-05-03 14:11:42.021236
@Entity
public class User {
private ZonedDateTime createdAt;
//getter&setter
//calling the setter like l
我正在开发一个项目,并使用了一个spring。它工作正常,但是当我向它添加一个数据库时,我得到了一些异常。
WARN com.zaxxer.hikari.util.DriverDataSource : Registered driver with driverClassName=org.gjt.mm.mysql.Driver was not found, trying direct instantiation.
ERROR com.zaxxer.hikari.pool.HikariPool : root - Exception during pool initializatio
我正在尝试遵循这个指南
但是这本指南是给maven的,我正在尝试gradle
并得到这个错误
Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.
Reason: Failed to determine a suitable driver class
在application.properties中,我只有这些东西。
spring.datasource.url=jdbc:mysql://localhos
在Spring中,当从MySQL连接到数据库时,我得到以下错误:
2021-02-11 20:50:56.204 ERROR 22892 --- [ main] com.zaxxer.hikari.pool.HikariPool : HikariPool-1 - Exception during pool initialization.
java.sql.SQLException: The server time zone value 'Mitteleurop�ische Zeit' is unrecognized or represents
首先我想说的是,当我在本地运行它时,它工作得很好。当我部署(./mvnw appengine: deploy )时,我部署得很好,没有错误,甚至看起来在-DskipTests=true云上运行得很好。但是当我尝试使用注册表时,我在提交时得到以下错误。
Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.
Wed Mar 07 22:48:57 UTC 2018
There was an unexpected error (
我试图用下面的行从JPA的SessionFactory创建Hibernate的EntityManager bean,但是EntityManger是空的,我不想在configuration类中扩展为SessionFactory创建bean的JPARepository.Hences。
@Configuration
public class BeanConfig {
@Autowired
EntityManager entityManager;
@Bean
public SessionFactory getSessionFactory() {
i
当我的Spring Boot应用程序试图连接到MySQL-database时,它抛出一个CommunicationsException: spring-service_1 | com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure
spring-service_1 |
spring-service_1 | The last packet sent successfully to the server was 0 milliseconds ago. The driver has n
我正在用IntelliJ IDEA社区IDE编写一个Java项目。该项目的技术栈:
JPA;MySQL. Spring Boot;Spring Data
我有项目中的application.yml文件要与数据库连接,但是当我运行我的应用程序时,我会得到一个错误:
APPLICATION FAILED TO START
Description:
Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.
R
尝试遵循中的指南,但是当我启动java应用程序时,它显示了以下错误:
Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.
Reason: Failed to determine a suitable driver class
Action:
Consider the following:
If you want an embedded database (H2, HSQL or Derb
我正在创建一个spring boot项目。然后,我尝试将mysql数据库连接到该项目。我收到名为"HikariPool-1 - pool initialization期间出现异常“的错误。 这是整个堆栈跟踪。 2020-07-10 23:37:36.630 ERROR 14824 --- [ restartedMain] com.zaxxer.hikari.pool.HikariPool : HikariPool-1 - Exception during pool initialization.
java.sql.SQLException: The server t
我正在尝试访问Spring框架中的MySQL数据库,但是我得到了以下错误。
***************************
APPLICATION FAILED TO START
***************************
Description:
Parameter 0 of constructor in org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration required a bean of type 'javax.sql.DataSource' t