IllegalArgumentException: At least one JPA metamodel must be present

Question

while starting with spring rest I got following error as

org.springframework.beans.factory.BeanCreationException: Error creating bean with name \'j

Answer 1

You can also disable Spring Data JPA's repository support by excluding the following auto configuration class (e.g. in your @EnableAutoConfiguration or @SpringBootApplication annotation)

org.springframework.boot.autoconfigure.data.jpa.JpaRepositoriesAutoConfiguration

For example:

@EnableAutoConfiguration(exclude = JpaRepositoriesAutoConfiguration.class)

Answer 2

You have added

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

in your pom.xml.

Spring boot will try automatically create an entity factory for JPA, but you do not have defined anything regarding JPA models.

Try removing it in order to test what have you done so far.

Afterwards you can check a tutorial using spring-data-starter-jpa like this guy

Answer 3

I've fixed it by setting newer version of Hibernate.

<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
         <exclusions>
             <exclusion>
                <groupId>org.hibernate</groupId>
                <artifactId>hibernate-entitymanager</artifactId>
            </exclusion>
            <exclusion>
                <groupId>org.hibernate</groupId>
                <artifactId>hibernate-core</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-core</artifactId>
        <version>5.2.10.Final</version>
    </dependency>

You can find a fully working example here: https://github.com/zobarov/ptc-task-executor

Answer 4

This worked for me.

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-jpa</artifactId>
     <exclusions>
         <exclusion>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
        </exclusion>
        <exclusion>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
        </exclusion>
    </exclusions>
</dependency>
<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-core</artifactId>
    <version>5.2.10.Final</version>
</dependency>