我的春天啓動的應用程序未能啓動：與錯誤「的entityManagerFactory」不能被發現

Question

Logs 


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(()\___ | '_ | '_| | '_ \/ _` | \ \ \ \ 
\\/ ___)| |_)| | | | | || (_| | )))) 
    ' |____| .__|_| |_|_| |_\__, |//// 
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:: Spring Boot ::  (v1.4.2.RELEASE) 

2017-05-10 22:20:52.172 INFO 4433 --- [   main] com.userModule.user_module.Application : Starting Application on hiren-vostro with PID 4433 (/media/hiren/Study/workspace/user-module/target/classes started by hiren in /media/hiren/Study/workspace/user-module) 
2017-05-10 22:20:52.210 INFO 4433 --- [   main] com.userModule.user_module.Application : The following profiles are active: application.properties 
2017-05-10 22:20:52.758 INFO 4433 --- [   main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@15c43bd9: startup date [Wed May 10 22:20:52 IST 2017]; root of context hierarchy 
2017-05-10 22:21:01.766 INFO 4433 --- [   main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [class org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration$$EnhancerBySpringCGLIB$$28cfbdfe] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 
2017-05-10 22:21:04.373 INFO 4433 --- [   main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http) 
2017-05-10 22:21:04.515 INFO 4433 --- [   main] o.apache.catalina.core.StandardService : Starting service Tomcat 
2017-05-10 22:21:04.526 INFO 4433 --- [   main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.6 
2017-05-10 22:21:05.046 INFO 4433 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/]  : Initializing Spring embedded WebApplicationContext 
2017-05-10 22:21:05.047 INFO 4433 --- [ost-startStop-1] o.s.web.context.ContextLoader   : Root WebApplicationContext: initialization completed in 12312 ms 
2017-05-10 22:21:05.595 INFO 4433 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Mapping servlet: 'dispatcherServlet' to [/] 
2017-05-10 22:21:05.607 INFO 4433 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*] 
2017-05-10 22:21:05.609 INFO 4433 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*] 
2017-05-10 22:21:05.609 INFO 4433 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'httpPutFormContentFilter' to: [/*] 
2017-05-10 22:21:05.610 INFO 4433 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'requestContextFilter' to: [/*] 
2017-05-10 22:21:06.130 WARN 4433 --- [   main] ationConfigEmbeddedWebApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'mainController': Unsatisfied dependency expressed through field 'userRepository'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userRepository': Cannot create inner bean '(inner bean)#c6634d' 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)#c6634d': Cannot resolve reference to bean 'entityManagerFactory' while setting constructor argument; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'entityManagerFactory' available 
2017-05-10 22:21:06.139 INFO 4433 --- [   main] o.apache.catalina.core.StandardService : Stopping service Tomcat 
2017-05-10 22:21:06.326 INFO 4433 --- [   main] utoConfigurationReportLoggingInitializer : 

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled. 
2017-05-10 22:21:06.596 ERROR 4433 --- [   main] o.s.b.d.LoggingFailureAnalysisReporter : 

*************************** 
APPLICATION FAILED TO START 
*************************** 

Description: 

Field userRepository in com.userModule.user_module.MainController required a bean named 'entityManagerFactory' that could not be found. 

操作：

考慮定義一個配置中的名爲「entityManagerFactory的」豆。

以下是代碼。 Application.java

package com.userModule.user_module; 

import org.springframework.boot.SpringApplication; 
import org.springframework.boot.autoconfigure.SpringBootApplication; 

@SpringBootApplication 
public class Application { 

    public static void main(String[] args) { 
     // TODO Auto-generated method stub 
     SpringApplication.run(Application.class,args); 
    } 

} 

MainController.java

package com.userModule.user_module; 

    import org.springframework.beans.factory.annotation.Autowired; 
    import org.springframework.context.annotation.Bean; 
    import org.springframework.stereotype.Controller; 
    import org.springframework.web.bind.annotation.GetMapping; 
    import org.springframework.web.bind.annotation.RequestMapping; 
    import org.springframework.web.bind.annotation.RequestParam; 
    import org.springframework.web.bind.annotation.ResponseBody; 
    import org.springframework.web.bind.annotation.RestController; 

    import com.userModule.user_module.AppUser; 
    import com.userModule.user_module.UserRepository; 
    @RestController 
    @RequestMapping(path="/demo") 
    public class MainController { 


    @Autowired 
    private UserRepository userRepository; 

    @GetMapping(path="/add") 
    public @ResponseBody String addNewUser(@RequestParam String name, @RequestParam String email){ 

     AppUser newUser = new AppUser(); 
     newUser.setName(name); 
     newUser.setEmail(email); 
     this.userRepository.save(newUser); 

     return "Saved"; 
    } 
}  

AppUser.java

package com.userModule.user_module; 

import javax.persistence.Entity; 
import javax.persistence.Id; 
import javax.persistence.GeneratedValue; 
import javax.persistence.GenerationType; 
@Entity 
public class AppUser { 
    @Id 
    @GeneratedValue(strategy=GenerationType.AUTO) 
    private int id; 

    private String name; 

    private String email; 

    public int getId() { 
     return id; 
    } 

    public void setId(int id) { 
     this.id = id; 
    } 

    public void setName(String name) { 
     this.name = name; 
    } 

    public String getName() { 
     return name; 
    } 

    public void setEmail(String email) { 
     this.email = email; 
    } 

    public String getEmail() { 
     return email; 
    } 

} 

UserRepository.java

package com.userModule.user_module; 

import org.springframework.data.repository.CrudRepository; 
import org.springframework.stereotype.Repository; 


@Repository 
public interface UserRepository extends CrudRepository<AppUser, Long>{ 

} 

的pom.xml

個

<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.userModule</groupId> 
    <artifactId>user-module</artifactId> 
    <version>0.0.1-SNAPSHOT</version> 
    <packaging>jar</packaging> 

    <name>user-module</name> 
    <url>http://maven.apache.org</url> 
    <parent> 
    <groupId>org.springframework.boot</groupId> 
    <artifactId>spring-boot-starter-parent</artifactId> 
    <version>1.4.2.RELEASE</version> 
    </parent> 
    <properties> 
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 
    <java.version>1.8</java.version> 
    </properties> 

    <dependencies> 
    <dependency> 
     <groupId>org.springframework.boot</groupId> 
     <artifactId>spring-boot-starter-web</artifactId> 
    </dependency> 
    <dependency> 
     <groupId>org.springframework.boot</groupId> 
     <artifactId>spring-boot-starter-data-jpa</artifactId> 
    </dependency> 
    <dependency> 
     <groupId>junit</groupId> 
     <artifactId>junit</artifactId> 
     <version>3.8.1</version> 
     <scope>test</scope> 
    </dependency> 
    <dependency> 
     <groupId>org.hibernate.javax.persistence</groupId> 
     <artifactId>hibernate-jpa-2.0-api</artifactId> 
     <version>1.0.1.Final</version> 
    </dependency> 

    <dependency> 
     <groupId>org.hibernate</groupId> 
     <artifactId>hibernate-jpamodelgen</artifactId> 
    </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>org.postgresql</groupId> 
    <artifactId>postgresql</artifactId> 
    <version>9.4-1206-jdbc42</version> 
</dependency> 
    </dependencies> 
<build> 
<plugins> 
    <plugin> 
     <groupId>org.springframework.boot</groupId> 
     <artifactId>spring-boot-maven-plugin</artifactId> 
    </plugin> 
</plugins> 
</build> 
</project> 

application.properties

spring.datasource.driver-class-name=org.postgresql.Driver 
spring.jpa.hibernate.ddl-auto=create 
spring.datasource.url=jdbc:postgresql://localhost:5432/postgres 
spring.datasource.username=postgres 
spring.datasource.password=password 
spring.profiles.active=application.properties 

Answer 1

嘗試從你的pom.xml移除這些依賴，因爲他們已經通過彈簧數據的JPA拉

<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>