我最近开始使用Eclipse（从IntelliJ Idea移出），但是无论我开始写什么新的SpringBoot应用程序，我总是会遇到这个问题。我的主类上的@SpringBootApplication无法按预期工作。我应该能够在不添加@ComponentScann批注的情况下逃脱（我知道它将使之起作用），但是本文的目的是找出原始故障的路由原因。我已经知道解决方法。我的应用程序始终会出现以下错误消息：
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.0.3.RELEASE)
2018-07-18 13:51:22.026 INFO 13936 --- [ restartedMain] c.g.w.WorkplaceloggerApplication : Starting WorkplaceloggerApplication on G488LTN2E with PID 13936 (C:\Projects\workplacelogger\bin\main started by 212704468 in C:\Projects\workplacelogger)
2018-07-18 13:51:22.026 INFO 13936 --- [ restartedMain] c.g.w.WorkplaceloggerApplication : No active profile set, falling back to default profiles: default
2018-07-18 13:51:22.075 INFO 13936 --- [ restartedMain] ConfigServletWebServerApplicationContext : Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@7f70a763: startup date [Wed Jul 18 13:51:22 CEST 2018]; root of context hierarchy
2018-07-18 13:51:22.959 INFO 13936 --- [ restartedMain] o.s.b.f.s.DefaultListableBeanFactory : Overriding bean definition for bean 'httpRequestHandlerAdapter' with a different definition: replacing [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration; factoryMethodName=httpRequestHandlerAdapter; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration$EnableWebMvcConfiguration.class]] with [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.data.rest.webmvc.config.RepositoryRestMvcConfiguration; factoryMethodName=httpRequestHandlerAdapter; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/data/rest/webmvc/config/RepositoryRestMvcConfiguration.class]]
2018-07-18 13:51:23.592 INFO 13936 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2018-07-18 13:51:23.609 INFO 13936 --- [ restartedMain] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2018-07-18 13:51:23.609 INFO 13936 --- [ restartedMain] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.31
2018-07-18 13:51:23.609 INFO 13936 --- [ost-startStop-1] o.a.catalina.core.AprLifecycleListener : The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: [C:\Program Files\Java\jre1.8.0_171\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:/Program Files/Java/jre1.8.0_171/bin/server;C:/Program Files/Java/jre1.8.0_171/bin;C:/Program Files/Java/jre1.8.0_171/lib/amd64;C:\Program Files (x86)\Common Files\Oracle\Java\javapath;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Program Files\Java\jdk1.8.0_171;C:\Program Files\Git\cmd;C:\ProgramData\chocolatey\bin;C:\Program Files\Java\jdk1.8.0_171\bin;C:\Program Files\nodejs\;C:\Python27\;C:\Python27\Scripts\;C:\ChromeDriver\;;C:\Program Files\Cloud Foundry;C:\Users\212704468\AppData\Local\Microsoft\WindowsApps;C:\Users\212704468\AppData\Roaming\npm;C:\Program Files\Microsoft VS Code\bin;C:\Users\212704468\AppData\Local\Programs\Fiddler;C:\sts-bundle\sts-3.9.4.RELEASE;;.]
2018-07-18 13:51:23.758 INFO 13936 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2018-07-18 13:51:23.758 INFO 13936 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 1683 ms
2018-07-18 13:51:23.892 INFO 13936 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Servlet dispatcherServlet mapped to [/]
2018-07-18 13:51:23.908 INFO 13936 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*]
2018-07-18 13:51:23.909 INFO 13936 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2018-07-18 13:51:23.909 INFO 13936 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2018-07-18 13:51:23.909 INFO 13936 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'requestContextFilter' to: [/*]
2018-07-18 13:51:23.942 WARN 13936 --- [ restartedMain] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'eventServiceDbImpl': Unsatisfied dependency expressed through field 'eventRepository'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.ge.workplacelogger.repositories.EventRepository' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
2018-07-18 13:51:23.942 INFO 13936 --- [ restartedMain] o.apache.catalina.core.StandardService : Stopping service [Tomcat]
2018-07-18 13:51:23.959 INFO 13936 --- [ restartedMain] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2018-07-18 13:51:24.159 ERROR 13936 --- [ restartedMain] o.s.b.d.LoggingFailureAnalysisReporter :
***************************
APPLICATION FAILED TO START
***************************
Description:
Field eventRepository in com.ge.workplacelogger.services.EventServiceDbImpl required a bean of type 'com.ge.workplacelogger.repositories.EventRepository' that could not be found.
Action:
Consider defining a bean of type 'com.ge.workplacelogger.repositories.EventRepository' in your configuration.
所以，这是我正在使用的代码
主班：
package com.ge.workplacelogger;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class WorkplaceloggerApplication {
public static void main(String[] args) {
SpringApplication.run(WorkplaceloggerApplication.class, args);
}
}
仓库接口：
package com.ge.workplacelogger.repositories;
import java.util.List;
import org.springframework.data.repository.CrudRepository;
import org.springframework.stereotype.Repository;
import com.ge.workplacelogger.models.Event;
import com.ge.workplacelogger.models.Worker;
@Repository
public interface EventRepository extends CrudRepository<Event, Integer> {
void saveEvent(Event event);
void deleteEvent(Event event);
List<Event> findAllEvents();
Event findEventByEventId(Integer eventId);
List<Event> findEventsByWorker(Worker worker);
}
最后，是我想@Autowire EventRepository的服务：
package com.ge.workplacelogger.services;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.ge.workplacelogger.models.Event;
import com.ge.workplacelogger.models.Worker;
import com.ge.workplacelogger.repositories.EventRepository;
@Service
public class EventServiceDbImpl implements EventService {
@Autowired
EventRepository eventRepository;
@Override
public void saveEvent(Event event) {
eventRepository.saveEvent(event);
}
@Override
public void deleteEvent(Event event) {
eventRepository.deleteEvent(event);
}
@Override
public List<Event> findAllEvents() {
return eventRepository.findAllEvents();
}
@Override
public Event findEventByEventId(Integer eventId) {
return eventRepository.findEventByEventId(eventId);
}
@Override
public List<Event> findEventsByWorker(Worker worker) {
return eventRepository.findEventsByWorker(worker);
}
}
据我了解，主类（位于com.ge.workplacelogger包中）的@SpringBootApplication将在所有子包上用作@ComponentScan。我所有的服务，存储库，模型都在com.ge.workplacelogger包的子包中，所以我真的不知道出什么问题了。这可能是一个荒谬的问题，但是与Eclipse有什么关系吗？以前从来没有IntelliJ有任何问题。
非常感谢您的提前答复！
编辑：
这也是我的实体，供您评估。
package com.ge.workplacelogger.models;
import java.time.LocalDateTime;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.Table;
@Entity
@Table
public class Event {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Integer eventId;
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "workerId")
private Worker worker;
private boolean logIn;
private LocalDateTime timestamp;
private String comment;
public Event() {
}
public Event(Integer eventId, Worker worker, boolean logIn, LocalDateTime timestamp, String comment) {
this.eventId = eventId;
this.worker = worker;
this.logIn = logIn;
this.timestamp = timestamp;
this.comment = comment;
}
public Integer getEventId() {
return eventId;
}
public void setEventId(Integer eventId) {
this.eventId = eventId;
}
public Worker getWorker() {
return worker;
}
public void setWorker(Worker worker) {
this.worker = worker;
}
public boolean isLogIn() {
return logIn;
}
public void setLogIn(boolean logIn) {
this.logIn = logIn;
}
public LocalDateTime getTimestamp() {
return timestamp;
}
public void setTimestamp(LocalDateTime timestamp) {
this.timestamp = timestamp;
}
public String getComment() {
return comment;
}
public void setComment(String comment) {
this.comment = comment;
}
@Override
public String toString() {
return "Event [eventId=" + eventId + ", worker=" + worker + ", logIn=" + logIn + ", timestamp=" + timestamp
+ ", comment=" + comment + "]";
}
}
编辑2：
Build.gradle：
buildscript {
ext {
springBootVersion = '2.0.3.RELEASE'
}
repositories {
mavenCentral()
}
dependencies {
classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
}
}
apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'org.springframework.boot'
apply plugin: 'io.spring.dependency-management'
group = 'com.ge'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = 1.8
repositories {
mavenCentral()
}
dependencies {
compile('org.springframework.boot:spring-boot-starter-data-jpa')
compile('org.springframework.boot:spring-boot-starter-data-rest')
compile('org.springframework.boot:spring-boot-starter-jdbc')
compile('org.springframework.boot:spring-boot-starter-thymeleaf')
compile('org.springframework.boot:spring-boot-starter-web')
runtime('org.springframework.boot:spring-boot-devtools')
runtime('org.postgresql:postgresql')
testCompile('org.springframework.boot:spring-boot-starter-test')
}
编辑3：
这是无法在此处插入的超长报告的末尾：）
调试= true
Exclusions:
-----------
org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration
Unconditional classes:
----------------------
org.springframework.boot.autoconfigure.context.PropertyPlaceholderAutoConfiguration
org.springframework.boot.autoconfigure.web.embedded.EmbeddedWebServerFactoryCustomizerAutoConfiguration
org.springframework.boot.autoconfigure.security.reactive.ReactiveSecurityAutoConfiguration
org.springframework.boot.autoconfigure.context.ConfigurationPropertiesAutoConfiguration
org.springframework.boot.autoconfigure.info.ProjectInfoAutoConfiguration
2018-07-18 16:49:24.410 DEBUG 7068 --- [ restartedMain] o.s.b.d.LoggingFailureAnalysisReporter : Application failed to start due to an exception
org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'entityManagerFactory' available
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefinition(DefaultListableBeanFactory.java:686) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedLocalBeanDefinition(AbstractBeanFactory.java:1210) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:367) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:110) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.resolveConstructorArguments(ConstructorResolver.java:625) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:444) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1256) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1105) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:503) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:312) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:131) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1611) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1363) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:580) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:503) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:317) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:251) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1138) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1065) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:584) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:91) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:373) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1350) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:580) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:503) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:317) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:760) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:869) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) ~[spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:395) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:327) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1255) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1243) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at com.ge.workplacelogger.WorkplaceloggerApplication.main(WorkplaceloggerApplication.java:14) [main/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_171]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_171]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_171]
at java.lang.reflect.Method.invoke(Unknown Source) ~[na:1.8.0_171]
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.0.3.RELEASE.jar:2.0.3.RELEASE]
2018-07-18 16:49:24.411 ERROR 7068 --- [ restartedMain] o.s.b.d.LoggingFailureAnalysisReporter :
***************************
APPLICATION FAILED TO START
***************************
Description:
Field eventRepository in com.ge.workplacelogger.services.EventServiceDbImpl required a bean named 'entityManagerFactory' that could not be found.
Action:
Consider defining a bean named 'entityManagerFactory' in your configuration.
编辑4：
Application.properties
spring.datasource.url=jdbc:postgres://localhost:5432/workplacelogger
spring.datasource.username=postgres
spring.datasource.password=password
spring.jpa.hibernate.ddl-auto=create-drop
spring.logging.level.org.hibernate.SQL=debug
spring.jpa.show-sql=true pring.autoconfigure.exclude=org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration
debug=true
最佳答案
@SpringBootApplication确实包括@ComponentScan。
从Getting Started - Building an Application with Spring Boot：
@SpringBootApplication是一个方便注释，它添加了以下所有内容：
@Configuration将类标记为应用程序上下文的Bean定义的源。
@EnableAutoConfiguration告诉Spring Boot根据类路径设置，其他bean和各种属性设置开始添加bean。
通常，您将为Spring MVC应用程序添加@EnableWebMvc，但是当Spring Boot在类路径上看到spring-webmvc时，它将自动添加它。这会将应用程序标记为Web应用程序，并激活诸如设置DispatcherServlet之类的关键行为。
@ComponentScan告诉Spring在hello包中寻找其他组件，配置和服务，从而允许它找到控制器。
关于SO的进一步阅读：Configuration using annotation @SpringBootApplication
在我看来，问题的根源可能是您在报告中没有提到的entityManagerFactory bean。滚动回上报告，我们会注意到出现在“排除”部分：
org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration
SpringBootApplication exclude when ComponentScanning other @SpringBootApplications帮了我其余的忙。您的应用程序属性被稍微搞砸了。注意这一行：
spring.jpa.show-sql = true pring.autoconfigure.exclude = org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration
我认为这可能是原始文件中的2行。无论如何，排除DataSourceAutoConfiguration可能是错误的。尝试删除：
spring.autoconfigure.exclude = org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration