Develop Reference

Eclipse IDE error - Ready State Poller has encontered a problem

I'm getting this error with every project with actuator dependency "Ready State Poller has encontered a problem: An internal error occurred during: "Ready state poller".
ATTR_PROCESS_ID"
Ready State Poller has encontered a problem: An internal error occurred during: "Ready state poller".
ATTR_PROCESS_ID
No stacktrace, project starts normally, just the eclipse IDE error message. How can I prevent this to happen?
My pom file:
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.7.5</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>demo.bootcamp</groupId>
<artifactId>pruebasClientes</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>pruebasClientes</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>11</java.version>
<spring-cloud.version>2020.0.4</spring-cloud.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</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>io.micrometer</groupId>
<artifactId>micrometer-registry-prometheus</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
This is a demo project for a bootcamp class, it has only 3 or 4 classes, I think my problem is in the config or in the pom.
Thanks.

You can examine this issue, Same problem appears.
https://github.com/spring-attic/spring-ide/issues/182

How do I create an executable jar for my webapp with Maven?

Backgound
I develop a webapp using a REST Interface with Spring. Normally I develop and execute my software with Eclipse. When my program has been started I enter localhost:8080/RESTPath in Chrome to access RESTPath with my program.
Issue
Now I want to build and execute my program with Maven instead with a executeble jar. The issue is that my knowledge with Maven is limited so I'm not sure how to do. Of course I have googled my issue and I have tested some examples but without succes. So far I think I should use the plugin tomcat7-maven-plugin in my POM.xml to generate a jar to execute with java -jar file.jar. I have followed the example with a webapp using tomcat7-maven-plugin but the jar file is never generated: https://www.baeldung.com/executable-jar-with-maven.
My POM:
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.6.2</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<!-- My project -->
<groupId>tobbe</groupId>
<artifactId>stocks-rest</artifactId>
<packaging>jar</packaging>
<version>1.0.2-SNAPSHOT</version>
<properties>
<java.version>17</java.version>
<maven.compiler.source>17</maven.compiler.source>
<maven.compiler.target>17</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<!-- My projects -->
<dependency>
<groupId>tobbe</groupId>
<artifactId>Stocks_Backend</artifactId>
<version>1.0.2-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>tobbe</groupId>
<artifactId>Other</artifactId>
<version>1.0.2-SNAPSHOT</version>
</dependency>
</dependencies>
</project>
Question
how should my POM look like a how should I build with Maven (i.e. mvn clean compile) to create an executable jar?

<?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
https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.6.2</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>17</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
You are missing build section in your pom. When you execute mvn clean package you will get the JAR File in the target folder

Problem creating Spring framework project in IntelliJ

I am trying to create a Spring project using Spring initializer in IntelliJ ultimate edition according to the official guide of Jetbrains.
All steps go fine including installing the dependencies of the project.
But whenever I try to run the app; the error below shows up stating that "package org.springframework.boot does not exist" which is already installed in my dependencies.
I've gone through every related post to this problem but no luck. I would appreciate if anyone can guide me through this to figure out what it is that's going wrong about this.
This is also my pom.xml content provided below:
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.4.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>15</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-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

In the top right side you have got a refresh button to reinitialize the Pom.xml file again. Once maven repositories are all set it will allow you to start the project

spring initializer in spring boot application

I have generated a spring boot application with spring-initializer. when im building the project it gives an unknown error in pom.xml file.
Why is this happening and how to reslove it?error with the pom.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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.5.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.research</groupId>
<artifactId>patients-api</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>patients-api</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</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-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>

it is not an error to worry about. Spring Boot 2.1.5.RELEASE has release just a week back and probably the IDE you are using for example STS may not be the latest one.
You have 2 options:
update your IDE & Maven and to the latest version [OR]
Simply change version <version>2.1.5.RELEASE</version> to <version>2.1.4.RELEASE</version> and do a Maven update on the project.
I had a similar issue and I fixed with the above options.
Hope this helps.

Dependency error in Spring Boot and Elastic Search maven application

I am creating application using Spring Boot, Spring Data, and Elasticsearch.
I am following this guide. I'm using Maven as my build tool. I am using IntelliJ IDEA as my primary IDE, and I created the Maven project using my IDE.
Here is my pom.xml file, that I created according to the tutorial.
<?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
http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>1</groupId>
<artifactId>springboot-springdata-elasticsearch</artifactId>
<version>1.0-SNAPSHOT</version>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.1.RELEASE</version>
</parent>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-elasticsearch</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>net.java.dev.jna</groupId>
<artifactId>jna</artifactId>
<scope>runtime</scope>
</dependency>
</dependencies>
<build>
<plugins>
<!-- Package as an executable jar/war -->
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
I am facing this error message:
Project '''org.springframework.boot:spring-boot-starter-parent:1.5.1.RELEASE''' not found.
Inspects a Maven model for resolution problems.
As well as this one:
Dependency '''org.springframework.boot:spring-boot-starter-data-elasticsearch:''' not found.
Inspects a Maven model for resolution problems.
And this one too:
Dependency '''org.springframework.boot:spring-boot-starter-test:''' not found.
Inspects a Maven model for resolution problems.
And the same error messages for other dependencies.