bean creation error when starting spring boot application

When i try to run my spring boot application i get this Exception:



> org.springframework.beans.factory.BeanCreationException: Error
> creating bean with name 'configurationPropertiesBeans' defined in
> class path resource
> [org/springframework/cloud/autoconfigure/ConfigurationPropertiesRebinderAutoConfiguration.class]:
> Post-processing of merged bean definition failed; nested exception is
> java.lang.IllegalStateException: Failed to introspect Class
> [org.springframework.cloud.context.properties.ConfigurationPropertiesBeans]
> from ClassLoader
> [jdk.internal.loader.ClassLoaders$AppClassLoader@3764951d]

I think it's an version incompatibility. I imported open feign in my pom.xml and after that it wasn't working, but i dont know how to fix that. I use open feign 2.2.5.RELEASE.
Here my pom.xml:
```xml
<?xml version="1.0" encoding="UTF-8"?>
<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

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;
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.4.0</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>privas.microservice</groupId>
<artifactId>sellcar</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>sellcar</name>
<description>Demo project for Spring Boot</description>

<properties>
<java.version>15</java.version>
<maven.compiler.target>${java.version}</maven.compiler.target>
<maven.compiler.source>${java.version}</maven.compiler.source>
<spring-cloud.version>Hoxton.SR8</spring-cloud.version>
</properties>

<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>


<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>

<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.testng</groupId>
<artifactId>testng</artifactId>
<version>RELEASE</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>jakarta.validation</groupId>
<artifactId>jakarta.validation-api</artifactId>
<version>2.0.2</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-commons</artifactId>
<version>2.4.1</version>
<scope>compile</scope>
</dependency>
</dependencies>

<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>

</project>
```

To elaborate on @M-deinum's comment, setting Spring Boot version to `2.3.4.RELEASE` (instead of `2.4.2` in my case) solved the issue. In `gradle` this meant changing:

plugins {
id 'org.springframework.boot' version '2.4.2'
...
}
To

plugins {
id 'org.springframework.boot' version '2.3.4.RELEASE'
...
}

You need to change spring boot version to Released version

from

<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.4.0</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>

to

<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.3.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>

Spring-Cloud - Hoxton.SR8 is not compatiable with Spring-boot 2.4.0

Just use either of the combinations:

<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.4.0</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>

<spring-cloud.version>2020.0.3</spring-cloud.version>
Or

<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.0</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>

<spring-cloud.version>Hoxton.SR8</spring-cloud.version>

I had a same issue, and it is happening because of Spring Cloud services and Spring Boot version issues. I got rid of it by using

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to generate my project.

When you select all dependencies needed for your project, you can then click the **Explore** button and check the `pom.xml` file.

This issue happened to me when I tried to add dependency for `Eureka-client` to my `pom.xml` after generating project, so using IntelliJ.

I got the same error.

Then I went to Spring.io again select dependencies that I use for my project and also dependency for `Eureka-client`, clicked on **Explore** button and saw that I need to add this line of code under java version in `pom.xml`

<spring-cloud.version>2020.0.3</spring-cloud.version>

But also this lines as well:

<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>

<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<excludes>
<exclude>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</exclude>
</excludes>
</configuration>
</plugin>
</plugins>
</build>

So I just copy pasted it to my existing `pom.xml` and it worked!

You need to follow the release train of Spring Cloud and match the version of the Spring-boot starter. The release train is available on the spring-cloud website

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The release train as of now is:
[Release train for spring-cloud][1]


[1]:

just Changing to :



<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
<version>3.1.1</version>
</dependency>

and Adding version to

<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>2.6.6</version>
</plugin>
</plugins>
</build>

Worked Fine For Me

This worked for me.
Go ti spring initialize start.spring.io and add the dependancies again. Compare your .pom with downloaded pom. I got my issue.

<spring-cloud.version>2021.0.3-SNAPSHOT</spring-cloud.version>

I was having diffent version of spring cloud hence there was a conflict.

<repository>
<id>netflix-candidates</id>
<name>Netflix Candidates</name>
<url>https://artifactory-oss.prod.netflix.net/artifactory/maven-oss-candidates</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>

add this to the repository

In my case, Im using build.gradle.

Changed from:

ext {
set('springCloudVersion', "Hoxton.SR1")
}

to:

ext {
set('springCloudVersion', "2021.0.4")
}

Note: Im using


id 'org.springframework.boot' version '2.6.1'