[FIXED] Start a spring boot project witout the parent part

Issue

I am currently working on migrating an appache CXF project to Spring BOOT.

My problem is that this project depend on two other projects and in order to import them into maven I need to declare the parent project like this:

<parent>
   <groupId>com.comapny.dd</groupId>
   <artifactId>ProjectMainJars_Parent</artifactId>
   <version>${version}</version>
 </parent>

but in order to use Spring Boot. I need to declare the parent like this:

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.4.0</version>
</parent>

I added the following code:

 <dependencyManagement>
    <dependencies>

      <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-dependencies</artifactId>
        <version>2.4.0</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>

    </dependencies>
  </dependencyManagement>

I still get the following error:

Exception in thread "main" java.lang.AbstractMethodError: org.springframework.boot.env.EnvironmentPostProcessorApplicationListener.supportsSourceType(Ljava/lang/Class;)Z
    at org.springframework.context.event.GenericApplicationListenerAdapter.supportsSourceType(GenericApplicationListenerAdapter.java:81)
    at org.springframework.context.event.AbstractApplicationEventMulticaster.supportsEvent(AbstractApplicationEventMulticaster.java:294)
    at org.springframework.context.event.AbstractApplicationEventMulticaster.retrieveApplicationListeners(AbstractApplicationEventMulticaster.java:224)
    at org.springframework.context.event.AbstractApplicationEventMulticaster.getApplicationListeners(AbstractApplicationEventMulticaster.java:195)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:133)

Is it possible to use spring boot without needing to change parent.
PS: I only need to create a REST service.

Thank you in advance.

Solution

If you have to specify some other artifact as parent, then spring boot needs to be moved under dependencyManagement tag parallel to dependencies like this:

  <dependencyManagement>
    <dependencies>

      <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-dependencies</artifactId>
        <version>2.4.0</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>

    </dependencies>
  </dependencyManagement>

  <dependencies>
  </dependencies>

Answered By - Paras
Answer Checked By - Robin (JavaFixing Admin)