[英]No bean named 'entityManagerFactory' available when module descriptor is added
我想开发一个使用 MySql db、Java 11 和 spring 引导的模块化应用程序。 在我添加模块描述符之前，该应用程序运行良好； 所以我只能猜测我在 module-info.java 中遗漏了一些东西，但我不知道它是什么。 我很感激任何帮助。 这是我的代码
pom.xml
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.1.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<java.version>11</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>mysql</groupId>
<artifactId>mysql-connector-java</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>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
应用程序.yml
spring:
datasource:
driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:mysql://localhost:3306/modules?serverTimezone=UTC
username: modulesAdmin
password: modules
jpa:
hibernate:
ddl-auto: create-drop
show-sql: true
properties:
hibernate.format_sql: true
模块信息.java
requires java.persistence;
requires spring.context;
requires spring.beans;
requires spring.data.jpa;
requires spring.data.commons;
requires spring.web;
requires spring.boot;
requires spring.boot.autoconfigure;
opens com.jamsws.demojpa to spring.core;
exports com.jamsws.demojpa to spring.beans, spring.context;
exports com.jamsws.demojpa.resource to spring.beans;
用户.java
@Entity
public class User {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer id;
private String name;
private String teamName;
private Integer salary;
public User() {
}
public User(String name, String teamName, Integer salary) {
this.name = name;
this.teamName = teamName;
this.salary = salary;
}
// getters and setters
}
UsersRepository.java
@Repository
public interface UsersRepository extends JpaRepository<User, Integer> {
}
用户资源.java
@RestController
@RequestMapping(value = "rest/users")
public class UserResources {
@Autowired
private UsersRepository usersRepository;
@PostMapping(value = "/load")
public List<User> persist(@RequestBody final User user) {
usersRepository.save(user);
return usersRepository.findAll();
}
}
DemojpaApplication.java
@SpringBootApplication
@EntityScan(basePackages = "com.jamsws.demojpa.model")
@EnableJpaRepositories(basePackages = "com.jamsws.demojpa.repository")
public class DemojpaApplication {
public static void main(String[] args) {
SpringApplication.run(DemojpaApplication.class, args);
}
}
错误跟踪
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to stop component [WebappLoader[StandardEngine[Tomcat].StandardHost[localhost].TomcatEmbeddedContext[]]]
at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[na:na]
at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191) ~[na:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.core.ContainerBase.stopInternal(ContainerBase.java:982) ~[tomcat-embed-core-9.0.36.jar:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:257) ~[tomcat-embed-core-9.0.36.jar:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.core.ContainerBase$StopChild.call(ContainerBase.java:1400) ~[tomcat-embed-core-9.0.36.jar:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.core.ContainerBase$StopChild.call(ContainerBase.java:1389) ~[tomcat-embed-core-9.0.36.jar:na]
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.36.jar:na]
at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140) ~[na:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.core.ContainerBase.stopInternal(ContainerBase.java:976) ~[tomcat-embed-core-9.0.36.jar:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:257) ~[tomcat-embed-core-9.0.36.jar:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.core.StandardService.stopInternal(StandardService.java:473) ~[tomcat-embed-core-9.0.36.jar:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:257) ~[tomcat-embed-core-9.0.36.jar:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.core.StandardServer.stopInternal(StandardServer.java:992) ~[tomcat-embed-core-9.0.36.jar:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:257) ~[tomcat-embed-core-9.0.36.jar:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.startup.Tomcat.stop(Tomcat.java:478) ~[tomcat-embed-core-9.0.36.jar:na]
at spring.boot@2.3.1.RELEASE/org.springframework.boot.web.embedded.tomcat.TomcatWebServer.stopTomcat(TomcatWebServer.java:273) ~[spring-boot-2.3.1.RELEASE.jar:na]
at spring.boot@2.3.1.RELEASE/org.springframework.boot.web.embedded.tomcat.TomcatWebServer.stop(TomcatWebServer.java:331) ~[spring-boot-2.3.1.RELEASE.jar:na]
at spring.boot@2.3.1.RELEASE/org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:148) ~[spring-boot-2.3.1.RELEASE.jar:na]
at spring.boot@2.3.1.RELEASE/org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) ~[spring-boot-2.3.1.RELEASE.jar:na]
at spring.boot@2.3.1.RELEASE/org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) ~[spring-boot-2.3.1.RELEASE.jar:na]
at spring.boot@2.3.1.RELEASE/org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) ~[spring-boot-2.3.1.RELEASE.jar:na]
at spring.boot@2.3.1.RELEASE/org.springframework.boot.SpringApplication.run(SpringApplication.java:315) ~[spring-boot-2.3.1.RELEASE.jar:na]
at spring.boot@2.3.1.RELEASE/org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) ~[spring-boot-2.3.1.RELEASE.jar:na]
at spring.boot@2.3.1.RELEASE/org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) ~[spring-boot-2.3.1.RELEASE.jar:na]
at demojpa/com.jamsws.demojpa.DemojpaApplication.main(DemojpaApplication.java:15) ~[classes/:na]
Caused by: org.apache.catalina.LifecycleException: Failed to stop component [WebappLoader[StandardEngine[Tomcat].StandardHost[localhost].TomcatEmbeddedContext[]]]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:440) ~[tomcat-embed-core-9.0.36.jar:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:267) ~[tomcat-embed-core-9.0.36.jar:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.core.StandardContext.stopInternal(StandardContext.java:5431) ~[tomcat-embed-core-9.0.36.jar:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:257) ~[tomcat-embed-core-9.0.36.jar:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.core.ContainerBase$StopChild.call(ContainerBase.java:1400) ~[tomcat-embed-core-9.0.36.jar:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.core.ContainerBase$StopChild.call(ContainerBase.java:1389) ~[tomcat-embed-core-9.0.36.jar:na]
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.36.jar:na]
at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140) ~[na:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.core.ContainerBase.stopInternal(ContainerBase.java:976) ~[tomcat-embed-core-9.0.36.jar:na]
... 23 common frames omitted
Caused by: java.lang.NoClassDefFoundError: java/sql/SQLException
at java.base/java.lang.Class.getDeclaredMethods0(Native Method) ~[na:na]
at java.base/java.lang.Class.privateGetDeclaredMethods(Class.java:3166) ~[na:na]
at java.base/java.lang.Class.getMethodsRecursive(Class.java:3307) ~[na:na]
at java.base/java.lang.Class.getMethod0(Class.java:3293) ~[na:na]
at java.base/java.lang.Class.getMethod(Class.java:2106) ~[na:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesJdbc(WebappClassLoaderBase.java:1697) ~[tomcat-embed-core-9.0.36.jar:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.loader.WebappClassLoaderBase.clearReferences(WebappClassLoaderBase.java:1619) ~[tomcat-embed-core-9.0.36.jar:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.loader.WebappClassLoaderBase.stop(WebappClassLoaderBase.java:1555) ~[tomcat-embed-core-9.0.36.jar:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.loader.WebappLoader.stopInternal(WebappLoader.java:449) ~[tomcat-embed-core-9.0.36.jar:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:257) ~[tomcat-embed-core-9.0.36.jar:na]
... 31 common frames omitted
Caused by: java.lang.ClassNotFoundException: java.sql.SQLException
at spring.boot@2.3.1.RELEASE/org.springframework.boot.web.embedded.tomcat.TomcatEmbeddedWebappClassLoader.loadClass(TomcatEmbeddedWebappClassLoader.java:72) ~[spring-boot-2.3.1.RELEASE.jar:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1188) ~[tomcat-embed-core-9.0.36.jar:na]
... 41 common frames omitted
2020-07-19 19:51:17.437 ERROR 10199 --- [ main] org.apache.catalina.core.ContainerBase : A child container failed during stop
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: A child container failed during stop
at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[na:na]
at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191) ~[na:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.core.ContainerBase.stopInternal(ContainerBase.java:982) ~[tomcat-embed-core-9.0.36.jar:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:257) ~[tomcat-embed-core-9.0.36.jar:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.core.StandardService.stopInternal(StandardService.java:473) ~[tomcat-embed-core-9.0.36.jar:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:257) ~[tomcat-embed-core-9.0.36.jar:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.core.StandardServer.stopInternal(StandardServer.java:992) ~[tomcat-embed-core-9.0.36.jar:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:257) ~[tomcat-embed-core-9.0.36.jar:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.startup.Tomcat.stop(Tomcat.java:478) ~[tomcat-embed-core-9.0.36.jar:na]
at spring.boot@2.3.1.RELEASE/org.springframework.boot.web.embedded.tomcat.TomcatWebServer.stopTomcat(TomcatWebServer.java:273) ~[spring-boot-2.3.1.RELEASE.jar:na]
at spring.boot@2.3.1.RELEASE/org.springframework.boot.web.embedded.tomcat.TomcatWebServer.stop(TomcatWebServer.java:331) ~[spring-boot-2.3.1.RELEASE.jar:na]
at spring.boot@2.3.1.RELEASE/org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:148) ~[spring-boot-2.3.1.RELEASE.jar:na]
at spring.boot@2.3.1.RELEASE/org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) ~[spring-boot-2.3.1.RELEASE.jar:na]
at spring.boot@2.3.1.RELEASE/org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) ~[spring-boot-2.3.1.RELEASE.jar:na]
at spring.boot@2.3.1.RELEASE/org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) ~[spring-boot-2.3.1.RELEASE.jar:na]
at spring.boot@2.3.1.RELEASE/org.springframework.boot.SpringApplication.run(SpringApplication.java:315) ~[spring-boot-2.3.1.RELEASE.jar:na]
at spring.boot@2.3.1.RELEASE/org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) ~[spring-boot-2.3.1.RELEASE.jar:na]
at spring.boot@2.3.1.RELEASE/org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) ~[spring-boot-2.3.1.RELEASE.jar:na]
at demojpa/com.jamsws.demojpa.DemojpaApplication.main(DemojpaApplication.java:15) ~[classes/:na]
Caused by: org.apache.catalina.LifecycleException: A child container failed during stop
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.core.ContainerBase.stopInternal(ContainerBase.java:990) ~[tomcat-embed-core-9.0.36.jar:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:257) ~[tomcat-embed-core-9.0.36.jar:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.core.ContainerBase$StopChild.call(ContainerBase.java:1400) ~[tomcat-embed-core-9.0.36.jar:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.core.ContainerBase$StopChild.call(ContainerBase.java:1389) ~[tomcat-embed-core-9.0.36.jar:na]
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.36.jar:na]
at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140) ~[na:na]
at org.apache.tomcat.embed.core@9.0.36/org.apache.catalina.core.ContainerBase.stopInternal(ContainerBase.java:976) ~[tomcat-embed-core-9.0.36.jar:na]
... 16 common frames omitted
2020-07-19 19:51:17.441 INFO 10199 --- [ main] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2020-07-19 19:51:17.469 ERROR 10199 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter :
***************************
APPLICATION FAILED TO START
***************************
Description:
Field usersRepository in com.jamsws.demojpa.resource.UserResources required a bean named 'entityManagerFactory' that could not be found.
The injection point has the following annotations:
- @org.springframework.beans.factory.annotation.Autowired(required=true)
Action:
Consider defining a bean named 'entityManagerFactory' in your configuration.
编辑：按照@Naman 的建议，我添加了一个requires java.sql; 到有帮助的模块描述符文件，但关于“没有名为 'entityManagerFactory' 的 bean 可用”的问题仍然存在
2020-07-20 06:57:54.679 INFO 21643 --- [ main] com.jamsws.demojpa.DemojpaApplication : Starting DemojpaApplication on anderson-ubuntu with PID 21643 (/home/anderson/Documents/JavaApps/PracticeProjects/demojpa/target/classes started by anderson in /home/anderson/Documents/JavaApps/PracticeProjects/demojpa)
2020-07-20 06:57:54.681 INFO 21643 --- [ main] com.jamsws.demojpa.DemojpaApplication : No active profile set, falling back to default profiles: default
2020-07-20 06:57:54.973 INFO 21643 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode.
2020-07-20 06:57:54.996 INFO 21643 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 20ms. Found 1 JPA repository interfaces.
2020-07-20 06:57:55.272 INFO 21643 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2020-07-20 06:57:55.276 INFO 21643 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2020-07-20 06:57:55.276 INFO 21643 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.36]
2020-07-20 06:57:55.295 INFO 21643 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2020-07-20 06:57:55.295 INFO 21643 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 579 ms
2020-07-20 06:57:55.327 WARN 21643 --- [ main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userResources': Unsatisfied dependency expressed through field 'usersRepository'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'usersRepository' defined in com.jamsws.demojpa.repository.UsersRepository defined in @EnableJpaRepositories declared on DemojpaApplication: Cannot create inner bean '(inner bean)#5c080ef3' of type [org.springframework.orm.jpa.SharedEntityManagerCreator] while setting bean property 'entityManager'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#5c080ef3': Cannot resolve reference to bean 'entityManagerFactory' while setting constructor argument; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'entityManagerFactory' available
2020-07-20 06:57:55.328 INFO 21643 --- [ main] o.apache.catalina.core.StandardService : Stopping service [Tomcat]
2020-07-20 06:57:55.338 INFO 21643 --- [ main] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2020-07-20 06:57:55.370 ERROR 21643 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter :
***************************
APPLICATION FAILED TO START
***************************
Description:
Field usersRepository in com.jamsws.demojpa.resource.UserResources required a bean named 'entityManagerFactory' that could not be found.
The injection point has the following annotations:
- @org.springframework.beans.factory.annotation.Autowired(required=true)
Action:
Consider defining a bean named 'entityManagerFactory' in your configuration.
Process finished with exit code 1
异常的主要原因似乎是
Caused by: java.lang.NoClassDefFoundError: java/sql/SQLException
同时，在您的问题中提到“应用程序在我添加模块描述符之前运行良好”，似乎表明在引入module-info.java ，您的应用程序必须一直在使用类路径，其中能够通过传递依赖找到上面提到的class。
1另一方面是，您的应用程序并不直接需要此 class，否则您将面临编译时错误，指出无法识别导入。
这归结为您在应用程序的描述符中提到的模块依赖项，因此其中一个或多个需要java.sql.SQLException现在出现在模块路径上，并且本身错过了明确指定（在自动模块）。 您需要确定您需要的模块中的哪些模块可能需要特定的 class 以获得长期解决方案。
1一种方法是，将其报告给库/模块所有者并要求他们定义显式依赖项。 这可能需要您等待它们自己模块化，然后使用升级版本。 在这种情况下，您可以在升级之前为您的应用程序添加一个参数
--add-modules=java.sql
另一个可能是您的应用程序本身在运行时需要java.sql模块，并且库只是在您明确声明时使用它。 在这种情况下，解决方案是将以下内容添加到您的module-info.java文件中：
requires java.sql
我已经浏览了你的堆栈跟踪。 你能试试下面的步骤吗
Spring Boot-没有可用的名为'entityManagerFactory'的bean
[英]Spring Boot - No bean named 'entityManagerFactory' available
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[英]No bean named 'entityManagerFactory' available into the primary datasource
Spring 引导说没有名为“entityManagerFactory”的bean可用
[英]Spring Boot says no bean named 'entityManagerFactory' available
Aws Lambda - “errorMessage”：“没有名为 'entityManagerFactory' 的 bean 可用”
[英]Aws Lambda - "errorMessage": "No bean named 'entityManagerFactory' available"
没有名为“ entityManagerFactory”的bean可用，但设置了entityManagerFactoryRef
[英]No bean named 'entityManagerFactory' available but entityManagerFactoryRef is set
错误 - NoSuchBeanDefinitionException：没有名为“entityManagerFactory”的bean可用
[英]Error - NoSuchBeanDefinitionException: No bean named 'entityManagerFactory' available
在测试期间找不到所需的 bean/没有可用的名为“entityManagerFactory”的 bean
[英]A required bean can not be found during tests / No bean named 'entityManagerFactory' available
个人资料有问题吗？ NoSuchBeanDefinitionException：没有名为“entityManagerFactory”的bean可用并且没有符合条件的bean类型
[英]is there a problem with profiles? NoSuchBeanDefinitionException: No bean named 'entityManagerFactory' available and No qualifying bean of type
当 entityManagerFactory 未命名为“entityManagerFactory”时
[英]When entityManagerFactory is not named "entityManagerFactory"
Spring启动（带jpa的mysql）：没有名为'entityManagerFactory'的bean可用
[英]Spring boot (mysql with jpa ): No bean named 'entityManagerFactory' available
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