Java 使用JPA和derby数据库启动spring启动应用程序时出现“找不到表”错误
我正在创建一个非常简单的spring启动应用程序。我有一个主题类，它是一个实体，我编写了一个名为TopicService的服务，并使用crudepository方法执行crud操作。当我启动我的应用程序时，我在控制台中收到以下消息：Java 使用JPA和derby数据库启动spring启动应用程序时出现“找不到表”错误,java,spring,hibernate,spring-boot,jpa,Java,Spring,Hibernate,Spring Boot,Jpa,我正在创建一个非常简单的spring启动应用程序。我有一个主题类，它是一个实体，我编写了一个名为TopicService的服务，并使用crudepository方法执行crud操作。当我启动我的应用程序时，我在控制台中收到以下消息： . ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.4.2.RELEASE)
2019-11-19 22:38:59.611 INFO 9476 --- [ main] i.j.s.CourseApiDataApplication : Starting CourseApiDataApplication on DESKTOP-EL3JT6U with PID 9476 (C:\Users\HP\LearnSpringBoot\Course-api-data\target\classes started by HP in C:\Users\HP\LearnSpringBoot\Course-api-data)
2019-11-19 22:38:59.656 INFO 9476 --- [ main] i.j.s.CourseApiDataApplication : No active profile set, falling back to default profiles: default
2019-11-19 22:38:59.821 INFO 9476 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@64cd705f: startup date [Tue Nov 19 22:38:59 PST 2019]; root of context hierarchy
2019-11-19 22:39:03.887 INFO 9476 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [class org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration$$EnhancerBySpringCGLIB$$1f7adbdb] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-11-19 22:39:05.050 INFO 9476 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2019-11-19 22:39:05.069 INFO 9476 --- [ main] o.apache.catalina.core.StandardService : Starting service Tomcat
2019-11-19 22:39:05.073 INFO 9476 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.6
2019-11-19 22:39:05.330 INFO 9476 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2019-11-19 22:39:05.331 INFO 9476 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 5514 ms
2019-11-19 22:39:05.734 INFO 9476 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Mapping servlet: 'dispatcherServlet' to [/]
2019-11-19 22:39:05.743 INFO 9476 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*]
2019-11-19 22:39:05.743 INFO 9476 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2019-11-19 22:39:05.747 INFO 9476 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2019-11-19 22:39:05.747 INFO 9476 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'requestContextFilter' to: [/*]
2019-11-19 22:39:06.217 INFO 9476 --- [ main] j.LocalContainerEntityManagerFactoryBean : Building JPA container EntityManagerFactory for persistence unit 'default'
2019-11-19 22:39:06.258 INFO 9476 --- [ main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [
name: default
...]
2019-11-19 22:39:06.452 INFO 9476 --- [ main] org.hibernate.Version : HHH000412: Hibernate Core {5.0.11.Final}
2019-11-19 22:39:06.453 INFO 9476 --- [ main] org.hibernate.cfg.Environment : HHH000206: hibernate.properties not found
2019-11-19 22:39:06.458 INFO 9476 --- [ main] org.hibernate.cfg.Environment : HHH000021: Bytecode provider name : javassist
2019-11-19 22:39:06.563 INFO 9476 --- [ main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.0.1.Final}
2019-11-19 22:39:08.653 INFO 9476 --- [ main] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.DerbyTenSevenDialect
2019-11-19 22:39:10.542 INFO 9476 --- [ main] org.hibernate.tool.hbm2ddl.SchemaUpdate : HHH000228: Running hbm2ddl schema update
2019-11-19 22:39:10.732 INFO 9476 --- [ main] rmationExtractorJdbcDatabaseMetaDataImpl : HHH000262: Table not found: Topic
2019-11-19 22:39:10.745 INFO 9476 --- [ main] rmationExtractorJdbcDatabaseMetaDataImpl : HHH000262: Table not found: Topic
2019-11-19 22:39:11.101 INFO 9476 --- [ main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'
2019-11-19 22:39:12.429 INFO 9476 --- [ main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@64cd705f: startup date [Tue Nov 19 22:38:59 PST 2019]; root of context hierarchy
2019-11-19 22:39:12.614 INFO 9476 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/topics/{id}],methods=[PUT]}" onto public void io.javabrains.springbootstarter.Topic.TopicController.updateTopic(io.javabrains.springbootstarter.Topic.Topic,int)
2019-11-19 22:39:12.614 INFO 9476 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/topics],methods=[POST]}" onto public void io.javabrains.springbootstarter.Topic.TopicController.addTopic(io.javabrains.springbootstarter.Topic.Topic)
2019-11-19 22:39:12.618 INFO 9476 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/topics/{id}],methods=[DELETE]}" onto public void io.javabrains.springbootstarter.Topic.TopicController.deleteTopic(int)
2019-11-19 22:39:12.619 INFO 9476 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/topics/{id}]}" onto public io.javabrains.springbootstarter.Topic.Topic io.javabrains.springbootstarter.Topic.TopicController.getSingleTopic(int)
2019-11-19 22:39:12.619 INFO 9476 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/topics]}" onto public java.util.List<io.javabrains.springbootstarter.Topic.Topic> io.javabrains.springbootstarter.Topic.TopicController.getAllTopics()
2019-11-19 22:39:12.623 INFO 9476 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2019-11-19 22:39:12.623 INFO 9476 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2019-11-19 22:39:12.704 INFO 9476 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2019-11-19 22:39:12.704 INFO 9476 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2019-11-19 22:39:12.880 INFO 9476 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2019-11-19 22:39:13.401 INFO 9476 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup
2019-11-19 22:39:13.676 INFO 9476 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)
2019-11-19 22:39:13.685 INFO 9476 --- [ main] i.j.s.CourseApiDataApplication : Started CourseApiDataApplication in 15.081 seconds (JVM running for 15.919)
package io.javabrains.springbootstarter.Topic;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.springframework.stereotype.Service;
@Service
public class TopicService {
private TopicRepository topicRepository;
public List<Topic> getAllTopics(){
List<Topic> lst = new ArrayList<>();
topicRepository.findAll().forEach(lst:: add);
return lst;
}
public Topic getTopic(int id) {
return topicRepository.findOne(id);
//return topicList.stream().filter(t -> t.getName().equals(name)).findFirst().get();
}
public void addTopic(Topic topic) {
topicRepository.save(topic);
//topicList.add(topic);
}
public void updateTopic(Topic topic , int id) {
topicRepository.save(topic);//we do not need another method for update , save method can do both insert and update . it checks firsst
// whether id of topic object is already there in table if it finds the id , it updats it otherwise insert
//topicList.set(id-1 , topic);
}
public void deleteTopic(int id) {
/*for(int i=1; i<=topicList.size(); i++) {
topicList.removeIf(t->t.getId()==id);
}*/
topicRepository.delete(id);
}
}
您错过的一件事是数据库连接URL。 将其添加到application.properties文件中
spring.datasource.url=jdbc:derby:mydb；create=true应用程序.propertiesspring.datasource.initialization-mode=always
你能粘贴完整的application.properties文件吗？我在applicaton.properties文件中有这两行。嗨，谢谢Jeyam的回答。我在application.properties文件中使用了url，但仍然得到相同的错误：(
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.2.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>io.javarbrains</groupId>
<artifactId>Course-api-data</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>Course-api-data</name>
<description>Demo project for Spring Boot api with data</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.apache.derby</groupId>
<artifactId>derby</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<!-- <dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>4.1.4.Final</version>
</dependency>
-->
<!-- <dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>5.2.3.Final</version>
</dependency>
-->
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.3.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
spring.jpa.hibernate.ddl-auto=update
spring.jpa.hibernate.naming.physical-strategy=org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl
spring.datasource.initialization-mode=always