Spring Boot - repository field required a bean named 'entityManagerFactory' that could not be found

Question

I am in the process of developing a Spring Boot application and came across this error when starting the server. I am not sure if I am incorrectly defining any annotations o

Answer 1

The problem might be due to version mismatch. Problem can be solve by specifying the dependency like this (since version is not mentioned, its auto managed)

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</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-web</artifactId>
    </dependency>
</dependencies>

Answer 2

spring-boot-starter-data-jpa will pull in all the hibernate dependencies you need. Using spring boot release 1.5.1, it will pull in hibernate-core:5.0.11 and hibernate-entitymanager:5.0.11. In addition to being unnecessary, your hibernate dependency versions are mismatched which is what I'm guessing is causing the error.

Try removing these dependencies from your pom.xml.

<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>

Answer 3

Hibernate-core 5.2.0 have problem with Spring Data JPA while process collection. Hibernate-core 5.2.1 and above is ok with Spring Data JPA when you use Spring Data JPA.

From hibernate onwards 5.2.0. hibernate-entitymanager is no longer needed.

So try to change:

<dependency>
 <groupId>org.hibernate</groupId>
 <artifactId>hibernate-core</artifactId>
 <version>4.1.4.Final</version>
</dependency>

To this version:

<dependency>
 <groupId>org.hibernate</groupId>
 <artifactId>hibernate-core</artifactId>
 <version> 5.2.1.Final</version>
</dependency>

This fixed it for me.

Answer 4

Try deleting your dependencies from

• ~/.m2/repository (Linux)
• C:/Users/your_user/.m2/repository (Windows)

and further updating your project dependencies either through your IDE's update dependencies functionality, or by running mvn install from your project's folder.

Answer 5

Try those dependencies

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>   
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
</dependency>

instead of:

<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>