Develop Reference

Spring Boot create .jar file (Maven)

I did not want to ask this question but I tried all the possible solutions on the StackOverFlow. With all the codes I tried the problem was:
Here is my 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 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>2.6.6</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.ahmetbesli</groupId>
<artifactId>nobet</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>nobetci</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>11</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>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>RELEASE</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.5.12</version>
</dependency>
<dependency>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
<version>20190722</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
I am trying to create the jar file with Intellij build artifacts.
I tried to add maven plugin for creating jar file.
I tried to define the mainClass also. But it didn't work.
spring-boot Maven: How to create executable jar with main class?
Create Jar of maven spring boot project
Build jar and run spring boot from cmd
Thanks for your help.

You should NOT use task jar in IntelliJ like that:
Instead, we can build jar by this command: ./mvnw clean package
And start service as usual: java -jar demo-0.0.1-SNAPSHOT.jar
Update: Also can use package in IntelliJ:

Spring Boot : Correct the classpath of your application so that it contains a single, compatible version of javax.persistence.JoinTable

Problem Statement
I am receiving the following exception when I run my Spring Boot application.
***************************
APPLICATION FAILED TO START
***************************
Description:
An attempt was made to call a method that does not exist. The attempt was made from the following location:
org.hibernate.cfg.AnnotationBinder.bindJoinedTableAssociation(AnnotationBinder.java:2548)
The following method did not exist:
javax.persistence.JoinTable.indexes()[Ljavax/persistence/Index;
The method's class, javax.persistence.JoinTable, is available from the following locations:
jar:file:/C:/Users/Usuario/IdeaProjects/spring-security/lib/javax.persistence.jar!/javax/persistence/JoinTable.class
jar:file:/C:/Users/Usuario/.m2/repository/jakarta/persistence/jakarta.persistence-api/2.2.3/jakarta.persistence-api-2.2.3.jar!/javax/persistence/JoinTable.class
The class hierarchy was loaded from the following locations:
javax.persistence.JoinTable: file:/C:/Users/Usuario/IdeaProjects/spring-security/lib/javax.persistence.jar
Action:
Correct the classpath of your application so that it contains a single, compatible version of javax.persistence.JoinTable
Process finished with exit code 1
Below is the contents of my pom.xml 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>2.5.4</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>spring-security</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>spring-security</name>
<description>spring-security</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.thymeleaf.extras</groupId>
<artifactId>thymeleaf-extras-springsecurity5</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
How to I remove one of the versions of javax.persistence.JoinTable?

Multiple javax.persistence.JoinTable
The issue is most likely related to the duplicate javax.persistence.* libraries. I see you have the following two dependencies
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
Remove the org.springframework.data.spring-data-jpa dependency.
The org.springframework.boot.spring-boot-starter-data-jpa dependency already includes org.springframework.data.spring-data-jpa which is being added transitively.
Make sure to run a mvn clean before packaging and testing the new jar file
Non Maven lib directory
It also looks like there is a lib directory in your project that may have dependencies that are not managed by Maven. Please delete at least the javax.persistence library from that location

Cannot start maven service - Class not found #

Ok...for the first time in my life as a Developer I have no Idea how to fix this error.
I'm having issues with Maven commands and Intellij.
(IMPORTANT)
All maven commands on local project isn't working and returns the error:
cannot find or load main class #, java.lang.ClassNotFoundException: #
Detail for the "#" on the error message.
My pom.xml file is:
<?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>garantia.safra</groupId>
<artifactId>gateway</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>gateway</name>
<description>description</description>
<properties>
<java.version>11</java.version>
<start-class>garantia.safra.gateway.GatewayApplication</start-class>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwd</artifactId>
<version>0.9.1</version>
</dependency>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.3.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</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>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
I tried to delete .m2/repository folder but it didn't work.
I tried to 'Settings > Build, execution, deployment > Build Tools > maven > Importing' and set the import as 'project JDK' but it didnt work. (I'm using JDK 11, and it was working before)
I tried to update the maven repositories by Intellij (remote and local) and now I have a error from remote repository (can't find any imported package classes)
The only thing I did that solve it once, was recreate the project as a new one and add all the classes and pom.xml, but when I added my configuration files it broke again.
I'm using a proxy from production (.maven/jvm.config)
# -Dhttp.proxyHost=<proxy_host>
# -Dhttp.proxyPort=<proxy_port>
# -Dhttps.proxyHost=<proxy_host>
# -Dhttps.proxyPort=<proxy_port>
But the lines are all commented right?
And application.properties:
server.address=0.0.0.0
So...This is being a very anoying problem, and I'm lack of ideas. Maybe I'm gonna try to recreate the project AGAIN and reimport each file to see which is the broken one, but if someone had this issue before and fixed it...how?

Empty or delete .maven/jvm.config file, it's loaded directly and added to the command line, the comments syntax is not supported.

Spring boot shows 'can not be resolved' even if the dependency exists in classpath

I have a spring boot application having starter-data-jpa dependency added to pom.xml. I can clearly find the javax.persistence package present in maven dependency section. But I am unable to use #Entity annotation. Upon manually entering import javax.persistence.Entity eclipse shows unresolved dependency.
Thanks in advance.
here is my pom.xml 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 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>2.1.6.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.springframework.boot</groupId>
<artifactId>currency-exchange-service</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>currency-exchange-serviceweb</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
<spring-cloud.version>Greenwich.SR2</spring-cloud.version>
</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.cloud</groupId>
<artifactId>spring-cloud-starter-config</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<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>
</plugin>
</plugins>
</build>

You're specifying <scope>test</scope> for the JPA starter, which specifically tells Maven that you only want that dependency available for test classes. Remove the scope and it should work.

Try removing <scope> for dependency JPA starter from pom.xml, do mvn clean install -U. this should solve your issue.

You should remove <scope>test</scope> from the spring-boot-starter-data-jpa dependency first.
If it still doesn't work, verify that your project runs when using Maven directly, by using the following command within a terminal:
mvn spring-boot:run
If this command works, reimport your project within your IDE, and test again. Often, the IDE doesn't immediately update the classpath, and is at fault.

Spring Boot "Unable to instantiate Configuration."

I've spent the past two days attempted to get Spring Boot to work. However, I have been unable to get a brand new, clean project to run inside of IntelliJ Idea.
Here's what I'm doing:
Open IntelliJ Idea
Create a new project with Spring Initializr with the dependencies Security, Web, Rest Repositories, JPA, H2, and Actuator.
Run the Java file called Application.java
Get this output.
(╯°□°）╯︵ ┻━┻
Here is my 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>
<groupId>com.aroid</groupId>
<artifactId>restserver</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<name>AroidRESTServer</name>
<description>Aroid REST Server</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.2.7.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<!-- Start what I added -->
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>7.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>javax.el</groupId>
<artifactId>javax.el-api</artifactId>
<version>2.2.4</version>
</dependency>
<!-- End what I added -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-rest</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot</artifactId>
<version>1.2.7.RELEASE</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Note: I have a section in the dependencies where I label the things I added by hand. These are things that Spring Initializr did not automatically add (and should have), so I needed to add them manually to get the project to run.
I believe the issue has to do with my IntelliJ Idea setup, since running a new project in STS (Spring Tool Suite) runs fine.
Some other things I've tried and still getting the same result:
Using the web version of Spring Initializr.
Creating a new Spring Boot project without any libraries
Downloading sample projects and running them.
Adding dependencies that have this library manually via Maven.
Creating then project in STS and importing it into IntelliJ Idea.
Basically anything within the first ten pages of Google Search results for the issue.
Any help would be quite helpful.
Thanks,
Nathan