我正在构建一个在线购物应用程序。在添加付款模型，付款资源，付款服务，付款存储库之前，该应用程序运行良好。创建付款模型后，我尝试删除整个数据库，但仍然无法正常工作。我不知道这是什么问题。
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.5.2.RELEASE)
2019-11-28 08:48:46.797 INFO 6220 --- [ main] com.myshop.OnlineshoppingApplication : Starting OnlineshoppingApplication on BooTCamp1 with PID 6220 (C:\Users\Reverside\Documents\reverside\final\workproject\onlineshopping\target\classes started by Reverside in C:\Users\Reverside\Documents\reverside\final\workproject\onlineshopping)
2019-11-28 08:48:46.800 INFO 6220 --- [ main] com.myshop.OnlineshoppingApplication : No active profile set, falling back to default profiles: default
2019-11-28 08:48:48.099 INFO 6220 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@3ee0fea4: startup date [Thu Nov 28 08:48:48 CAT 2019]; root of context hierarchy
2019-11-28 08:48:49.256 INFO 6220 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode!
2019-11-28 08:48:49.387 INFO 6220 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode!
2019-11-28 08:48:49.483 INFO 6220 --- [ main] .RepositoryConfigurationExtensionSupport : Spring Data Redis - Could not safely identify store assignment for repository candidate interface com.myshop.repository.UserRepository.
2019-11-28 08:48:49.484 INFO 6220 --- [ main] .RepositoryConfigurationExtensionSupport : Spring Data Redis - Could not safely identify store assignment for repository candidate interface com.myshop.repository.CartItemRepository.
2019-11-28 08:48:49.484 INFO 6220 --- [ main] .RepositoryConfigurationExtensionSupport : Spring Data Redis - Could not safely identify store assignment for repository candidate interface com.myshop.repository.ProductToCartItemRepository.
2019-11-28 08:48:49.484 INFO 6220 --- [ main] .RepositoryConfigurationExtensionSupport : Spring Data Redis - Could not safely identify store assignment for repository candidate interface com.myshop.repository.DeliveryAddressRepository.
2019-11-28 08:48:49.485 INFO 6220 --- [ main] .RepositoryConfigurationExtensionSupport : Spring Data Redis - Could not safely identify store assignment for repository candidate interface com.myshop.repository.UserBillingRepository.
2019-11-28 08:48:49.485 INFO 6220 --- [ main] .RepositoryConfigurationExtensionSupport : Spring Data Redis - Could not safely identify store assignment for repository candidate interface com.myshop.repository.UserPaymentRepository.
2019-11-28 08:48:49.485 INFO 6220 --- [ main] .RepositoryConfigurationExtensionSupport : Spring Data Redis - Could not safely identify store assignment for repository candidate interface com.myshop.repository.OrderRepository.
2019-11-28 08:48:49.485 INFO 6220 --- [ main] .RepositoryConfigurationExtensionSupport : Spring Data Redis - Could not safely identify store assignment for repository candidate interface com.myshop.repository.UserDeliveryRepository.
2019-11-28 08:48:49.486 INFO 6220 --- [ main] .RepositoryConfigurationExtensionSupport : Spring Data Redis - Could not safely identify store assignment for repository candidate interface com.myshop.repository.RoleRepository.
2019-11-28 08:48:49.486 INFO 6220 --- [ main] .RepositoryConfigurationExtensionSupport : Spring Data Redis - Could not safely identify store assignment for repository candidate interface com.myshop.repository.ProductRepository.
2019-11-28 08:48:49.486 INFO 6220 --- [ main] .RepositoryConfigurationExtensionSupport : Spring Data Redis - Could not safely identify store assignment for repository candidate interface com.myshop.repository.ShoppingCartRepository.
2019-11-28 08:48:49.487 INFO 6220 --- [ main] .RepositoryConfigurationExtensionSupport : Spring Data Redis - Could not safely identify store assignment for repository candidate interface com.myshop.repository.BillingAddressRepository.
2019-11-28 08:48:49.487 INFO 6220 --- [ main] .RepositoryConfigurationExtensionSupport : Spring Data Redis - Could not safely identify store assignment for repository candidate interface com.myshop.repository.PaymentRepository.
2019-11-28 08:48:49.997 INFO 6220 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration$$EnhancerBySpringCGLIB$$7d6e0f9b] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-11-28 08:48:50.587 INFO 6220 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2019-11-28 08:48:50.613 INFO 6220 --- [ main] o.apache.catalina.core.StandardService : Starting service Tomcat
2019-11-28 08:48:50.615 INFO 6220 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.11
2019-11-28 08:48:50.998 INFO 6220 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2019-11-28 08:48:50.999 INFO 6220 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 2912 ms
2019-11-28 08:48:51.151 INFO 6220 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*]
2019-11-28 08:48:51.163 INFO 6220 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2019-11-28 08:48:51.163 INFO 6220 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2019-11-28 08:48:51.163 INFO 6220 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'requestContextFilter' to: [/*]
2019-11-28 08:48:51.164 INFO 6220 --- [ost-startStop-1] .s.DelegatingFilterProxyRegistrationBean : Mapping filter: 'springSecurityFilterChain' to: [/*]
2019-11-28 08:48:51.164 INFO 6220 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Mapping servlet: 'dispatcherServlet' to [/]
2019-11-28 08:48:52.006 INFO 6220 --- [ main] j.LocalContainerEntityManagerFactoryBean : Building JPA container EntityManagerFactory for persistence unit 'default'
2019-11-28 08:48:52.029 INFO 6220 --- [ main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [
name: default
...]
2019-11-28 08:48:52.251 INFO 6220 --- [ main] org.hibernate.Version : HHH000412: Hibernate Core {5.0.12.Final}
2019-11-28 08:48:52.253 INFO 6220 --- [ main] org.hibernate.cfg.Environment : HHH000206: hibernate.properties not found
2019-11-28 08:48:52.265 INFO 6220 --- [ main] org.hibernate.cfg.Environment : HHH000021: Bytecode provider name : javassist
2019-11-28 08:48:52.482 INFO 6220 --- [ main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.0.1.Final}
2019-11-28 08:48:52.784 INFO 6220 --- [ main] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.MySQL5Dialect
2019-11-28 08:48:54.230 INFO 6220 --- [ main] org.hibernate.tool.hbm2ddl.SchemaUpdate : HHH000228: Running hbm2ddl schema update
2019-11-28 08:48:54.383 INFO 6220 --- [ main] rmationExtractorJdbcDatabaseMetaDataImpl : HHH000262: Table not found: payment
2019-11-28 08:48:54.556 WARN 6220 --- [ main] ationConfigEmbeddedWebApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory
2019-11-28 08:48:54.566 INFO 6220 --- [ main] o.apache.catalina.core.StandardService : Stopping service Tomcat
2019-11-28 08:48:54.581 WARN 6220 --- [ main] o.s.boot.SpringApplication : Error handling failed (Error creating bean with name 'delegatingApplicationListener' defined in class path resource [org/springframework/security/config/annotation/web/configuration/WebSecurityConfiguration.class]: BeanPostProcessor before instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration': Initialization of bean failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'org.springframework.context.annotation.ConfigurationClassPostProcessor.importRegistry' available)
2019-11-28 08:48:54.588 ERROR 6220 --- [ main] o.s.boot.SpringApplication : Application startup failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1628) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1081) ~[spring-context-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:856) ~[spring-context-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542) ~[spring-context-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:737) [spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:370) [spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:314) [spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1162) [spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1151) [spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at com.myshop.OnlineshoppingApplication.main(OnlineshoppingApplication.java:28) [classes/:na]
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.persistenceException(EntityManagerFactoryBuilderImpl.java:954) ~[hibernate-entitymanager-5.0.12.Final.jar:5.0.12.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:882) ~[hibernate-entitymanager-5.0.12.Final.jar:5.0.12.Final]
at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:60) ~[spring-orm-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:353) ~[spring-orm-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:370) ~[spring-orm-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:359) ~[spring-orm-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1687) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1624) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
... 16 common frames omitted
Caused by: org.hibernate.tool.schema.spi.SchemaManagementException: Unable to execute schema management to JDBC target [alter table payment add column id bigint not null]
at org.hibernate.tool.schema.internal.TargetDatabaseImpl.accept(TargetDatabaseImpl.java:59) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
at org.hibernate.tool.schema.internal.SchemaMigratorImpl.applySqlString(SchemaMigratorImpl.java:431) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
at org.hibernate.tool.schema.internal.SchemaMigratorImpl.applySqlStrings(SchemaMigratorImpl.java:449) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
at org.hibernate.tool.schema.internal.SchemaMigratorImpl.migrateTable(SchemaMigratorImpl.java:253) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
at org.hibernate.tool.schema.internal.SchemaMigratorImpl.doMigrationToTargets(SchemaMigratorImpl.java:170) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
at org.hibernate.tool.schema.internal.SchemaMigratorImpl.doMigration(SchemaMigratorImpl.java:60) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
at org.hibernate.tool.hbm2ddl.SchemaUpdate.execute(SchemaUpdate.java:134) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
at org.hibernate.tool.hbm2ddl.SchemaUpdate.execute(SchemaUpdate.java:101) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:472) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:444) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:879) ~[hibernate-entitymanager-5.0.12.Final.jar:5.0.12.Final]
... 22 common frames omitted
Caused by: java.sql.SQLSyntaxErrorException: Table 'shopdb.payment' doesn't exist
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:120) ~[mysql-connector-java-8.0.13.jar:8.0.13]
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) ~[mysql-connector-java-8.0.13.jar:8.0.13]
at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122) ~[mysql-connector-java-8.0.13.jar:8.0.13]
at com.mysql.cj.jdbc.StatementImpl.executeUpdateInternal(StatementImpl.java:1355) ~[mysql-connector-java-8.0.13.jar:8.0.13]
at com.mysql.cj.jdbc.StatementImpl.executeLargeUpdate(StatementImpl.java:2128) ~[mysql-connector-java-8.0.13.jar:8.0.13]
at com.mysql.cj.jdbc.StatementImpl.executeUpdate(StatementImpl.java:1264) ~[mysql-connector-java-8.0.13.jar:8.0.13]
at org.hibernate.tool.schema.internal.TargetDatabaseImpl.accept(TargetDatabaseImpl.java:56) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
... 32 common frames omitted
POM文件
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.myshop</groupId>
<artifactId>myshop</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>onlineshopping</name>
<description>onlineshopping</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.2.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.13</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.session</groupId>
<artifactId>spring-session</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.session</groupId>
<artifactId>spring-session-data-redis</artifactId>
</dependency>
<dependency>
<groupId>biz.paluch.redis</groupId>
<artifactId>lettuce</artifactId>
<version>4.3.1.Final</version>
</dependency>
<dependency>
<groupId>javax.mail</groupId>
<artifactId>mail</artifactId>
<version>1.4.7</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
这是我创建的这种付款模式
package com.myshop.domainModel;
import java.io.Serializable;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.OneToOne;
import com.fasterxml.jackson.annotation.JsonIgnore;
@Entity
public class Payment implements Serializable{
private static final long serialVersionUID = 79151235145L;
@Id
@GeneratedValue(strategy=GenerationType.AUTO)
private Long id;
private String type;
private String cardNumber;
private int expiryMonth;
private int expiryYear;
private int cvc;
private String holderName;
private boolean defaultPayment;
@OneToOne
@JsonIgnore
private Order order;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public String getCardNumber() {
return cardNumber;
}
public void setCardNumber(String cardNumber) {
this.cardNumber = cardNumber;
}
public int getExpiryMonth() {
return expiryMonth;
}
public void setExpiryMonth(int expiryMonth) {
this.expiryMonth = expiryMonth;
}
public int getExpiryYear() {
return expiryYear;
}
public void setExpiryYear(int expiryYear) {
this.expiryYear = expiryYear;
}
public int getCvc() {
return cvc;
}
public void setCvc(int cvc) {
this.cvc = cvc;
}
public String getHolderName() {
return holderName;
}
public void setHolderName(String holderName) {
this.holderName = holderName;
}
public boolean isDefaultPayment() {
return defaultPayment;
}
public void setDefaultPayment(boolean defaultPayment) {
this.defaultPayment = defaultPayment;
}
public Order getOrder() {
return order;
}
public void setOrder(Order order) {
this.order = order;
}
}
答案 0 :(得分：1)
您的错误明确表明您尚未创建数据库表： shopdb.payment 。
因此，您的持久流将中断（错误：使用实体管理器创建bean与此相关）。
如果您不想为自动生成表添加任何配置，则可以手动创建，但是如果您动态地进行配置，
运行时未创建数据库表的原因有很多：
@EnableAutoConfiguration
@PropertySource
@EntityScan
spring.jpa.database-platform = org.hibernate.dialect.MySQL5InnoDBDialect
spring.jpa.generate-ddl = true
spring.jpa.hibernate.ddl-auto = create
spring.datasource.driverClassName = com.mysql.jdbc.Driver
spring.datasource.url = jdbc：mysql：// localhost：3306 / shopdb
spring.datasource.username =数据库用户名
spring.datasource.password =数据库密码
在某些情况下，您需要创建数据库的默认架构。
在某些情况下，进行此类活动时，敏感性会发挥理想的作用，
我强烈建议定义@ Table，@ Column批注或Lombok类型的库（如果您的版本支持）。
根据需要检查列名（与错误无关）。
还要验证您的映射是否存在，可以在私人环境中放置和正常使用。
答案 1 :(得分：0)
您将需要手动创建数据库
并检查您的application.properties文件或YML文件是否具有以下配置
spring.jpa.hibernate.ddl-auto=update
spring.datasource.url=jdbc:mysql://${MYSQL_HOST:localhost}:3306/db_example
spring.datasource.username=username
spring.datasource.password=password
下面是一个很好的教程，可以了解有关数据持久性的更多信息。