java.lang.ClassNotFoundException: com.netflix.discovery.EurekaClientConfig - java

I'm using Spring Cloud Eureka and creating the project using Spring Initializr (http://start.spring.io/). The generated POM user Eureka Finchley.RC2 with Spring Boot 2.0.2.RELEASE. When I add the annotation #EnableEurekaServer in the main class, the one annotated with #SpringBootApplication also, and I start the server with following command:
mvn spring-boot:run
I receive the exception
java.lang.ClassNotFoundException: com.netflix.discovery.EurekaClientConfig
the following is the pom.xml generated by the Initializr:
<?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>it.javaboss</groupId>
<artifactId>api-gateway</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>api-gateway</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.2.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<spring-cloud.version>Finchley.RC2</spring-cloud.version>
</properties>
<dependencies>
<!-- <dependency> -->
<!-- <groupId>org.springframework.cloud</groupId> -->
<!-- <artifactId>spring-cloud-starter-config</artifactId> -->
<!-- </dependency> -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</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>
<repositories>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>


I found the eureka-clien-1.9.2.jar in my local maven repository is ZERO length file, so I deleted it and re-download the dependency, all is ok!


hope to help someone - i had same issue java.lang.NoClassDefFoundError:com/netflix/discovery/converters/XmlXStream when launch eureka server, version i used springboot 2.0.3.RELEASE and spring-cloud.version Finchley.RELEASE. i resolved it by rename my local maven repo user-folder.m2\repository, fresh load a new local maven repo.


Try to use below dependencies in your pom.xml
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.3.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<spring-cloud.version>Finchley.RELEASE</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</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>
<finalName>eureka-server</finalName>
</build>


As 'rosa lu' said, when launch eureka server I have the similar issue as below:
java.lang.NoClassDefFoundError:com/netflix/discovery/converters/XmlXStream
SpringBoot=2.0.5.RELEASE
SpringCloud.version=Finchley.SR1
As 'rosa lu' said, I change my local maven repository to a new path, and rebuild my project, then solve the problem
I hope my answer can help anyone who has the same issue .


Make sure that
You should select only Eureka Server using spring Initializr
while creating eureka server project.
Have these properties (in application.properties)
eureka.client.register-with-eureka=false
eureka.client.fetch-registry=false
These will disable the client aspect the the eureka server.
You might be having com.netflix.discovery.EurekaClientConfig imported somewhere in your project. So organize your imports once.


I finally solved the propblem in two different solution:
1.adding two more dependencies:
<dependency>
<groupId>com.netflix.eureka</groupId>
<artifactId>eureka-client</artifactId>
</dependency>
<dependency>
<groupId>org.codehaus.jettison</groupId>
<artifactId>jettison</artifactId>
<version>1.3.5</version>
</dependency>
2.renaming application.yml in bootstrap.yml and disabling autoregistration:
eureka:
client:
registerWithEureka: false
fetchRegistry: false
but in this second way I still need to add the dependency to jettison:
<dependency>
<groupId>org.codehaus.jettison</groupId>
<artifactId>jettison</artifactId>
<version>1.3.5</version>
</dependency>

Related

The eureka server interface is not displayed correctly on the external tomcat server

I tried to deploy my Eureka Server on Tomcat v10.1.5, but the interface is not showed properly (wro.css and wro.js not found)
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>3.0.2</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com</groupId>
<artifactId>discoveryserver</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>discoveryserver</name>
<packaging>war</packaging>
<properties>
<java.version>17</java.version>
<spring-cloud.version>2022.0.0</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
<version>4.0.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</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>
<repositories>
<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>
</repositories>
</project>
It worked properly with Tomcat v9.0, Spring 2.4.1 and Java 1.8, but I need to deploy it on Tomcat v10.1.5 and use Java 17
Has anyone else encountered this problem?

HTTP Status 404 – Not Found for Spring Security SAML2 Sample app

Getting this error when I try to configure the Spring Security SAML2 Sample app.
HTTP Status 404 – Not Found Type Status Report
Message The requested resource [/spring-security-saml2-sample] is not
available
Description The origin server did not find a current representation
for the target resource or is not willing to disclose that one exists.
Apache Tomcat/10.0.8
I can access Tomcat on this page fine - http://localhost:8080/, just cannot access the spring-security-saml2-sample page - http://localhost:8080/spring-security-saml2-sample
Following this guide:
https://developer.okta.com/code/java/spring_security_saml/
https://docs.spring.io/spring-security-saml/docs/current/reference/html/chapter-quick-start.html
pom.xml file details:
<?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.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.10.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<!-- Need this to compile JSP -->
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
</dependency>
<!-- Tomcat embedded container-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</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-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.security.extensions</groupId>
<artifactId>spring-security-saml-dsl</artifactId>
<version>1.0.0.M3</version>
</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>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.19.1</version>
<configuration>
<testFailureIgnore>true</testFailureIgnore>
</configuration>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/libs-milestone</url>
</repository>
</repositories>
</project>

Spring Boot Starter project not working (error in pom.xml) when including Spring Cloud dependencies

When I create a new Spring Starter project in Spring Tool Suite, and include Spring Cloud dependencies, I get an error in pom.xml and the app does not run at all. In fact, I'm getting 82 errors, mostly "missing artifact". When I remove the cloud dependency but keep all other dependencies, it works fine, so it is definitely to do with cloud. This happens with cloud config and cloud bootstrap dependencies (I tried creating new projects with both individually, and each gives errors). I've even tried a few different versions of Spring Boot, and copied and pasted a pom.xml from an online course, and I always get the same errors.
EDIT:
This is the pom.xml generated when I create a Spring starter project with only cloud-config:
<?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>2.4.1</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.in28minutes.microservices</groupId>
<artifactId>limits-service-3</artifactId>
<version>2.4.1</version>
<name>limits-service-3</name>
<description>LimitsService for Microservices Project</description>
<properties>
<java.version>11</java.version>
<spring-cloud.version>2020.0.0</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-config</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</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>
<repositories>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
</repository>
</repositories>
</project>
The errors are mostly "missing artifact" as well as:
Test cannot be resolved to a type
The container 'Maven Dependencies' references non existing library
The import org.junit.jupiter cannot be resolved
The project cannot be built until build path errors are resolved

Cannot resolve org.springframework.cloud:spring-cloud-starter-netflix-eureka-client:unknown

I am following a tutorial to learn eureka server/client with spring boot
when I try to install maven dependencies in the pom.xml I get the error in the title
this 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 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>2.3.3.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.nlimits</groupId>
<artifactId>movie_info_service</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>movie_info_service</name>
<description>Movie Info Service</description>
<properties>
<java.version>11</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</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>
How can I solve this problem and why is it happening?

I too am following a tutorial as well.
I created a basic microservice using Spring Boot in IntelliJ 2020.1
I added the spring-cloud-starter-netflix-eureka-client starter to my project.
Here is what was added to the pom.xml:
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Hoxton.SR8</version>
<type>pom</type>
<scope>import</scope>
</dependency>
After reloading the maven pom.xml file, I get the error that dependency is not found.
Here is the error:
Cannot resolve org.springframework.cloud:spring-cloud-starter-netflix-eureka-client:unknown
I am using Spring Boot 2.3.5.
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.5.RELEASE</version>
SOLUTION :
For some reason, the version of the eureka discovery client is not added automatically to the pom when using the spring initializr to add the spring-boot-starter. So I added the version manually:
<version>2.2.5.RELEASE</version>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
<version>2.2.5.RELEASE</version>
</dependency>
Then after refreshing the maven pom.xml the dependency was recognized.

just add this code after <dependencies/> section and before <build/> section:
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-parent</artifactId>
<version>Greenwich.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>

I managed to solve this problem by adding spring cloud version in properties.
<properties>
<java.version>11</java.version>
<spring-cloud.version>Hoxton.SR8</spring-cloud.version>
</properties>

Check the Spring boot Starter version (2.3.3) and Spring Cloud version (2.2.5), it fails your build, I recommend to use Spring Initializer to create your pom/build file for your project.

Change the spring boot version (and the spring cloud version) in the pom.xml
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.5.RELEASE</version>
<relativePath/>
</parent>
<properties>
<java.version>11</java.version>
<spring-cloud.version>Greenwich.SR1</spring-cloud.version>
</properties>

I realized the jar files are downloaded into "Maven Dependencies" in the project folder but the POM error still exist.
Solution:-
Delete the C:\Users<user>.m2 folder and then reload maven from POM.

Adding the version of eureka discovery client manually can help to resolve the problem.
I added the version and it worked.
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
<version>2.2.10.RELEASE</version>
</dependency>

At Spring Start, when creating the project,
also take the repositories, these guys are fundamental.
<repositories>
// DATA
</repositories>
<pluginRepositories>
<pluginRepository>
// DATA
</pluginRepository>
<pluginRepository>
// DATA
</pluginRepository>
</pluginRepositories>

Heroku cannot deploy Java 11 Spring Boot App [duplicate]

This question already has answers here:
Failed to build app with Maven, I can run code locally, but fail to deploy on heroku
(5 answers)
Closed 3 years ago.
I am trying to deploy a Spring Boot app on Heroku ,using Java version 11.0.1.
The error:
Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.0:compile (default-compile) on project my-project: Fatal error compiling: invalid target release: 11 -> [Help 1]
After a lot of research, I've found https://github.com/heroku/heroku-buildpack-java . I've created the system.properties file with multiple variations like :
java.runtime.version=11
java.runtime.version=11.0.1
But still, the same error appears while deploying. Spring Boot and Project java version is set to 11.
And the java version on Windows is set as well on 11.0.1
And while deploying
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>net.manolispapadimitriou</groupId>
<artifactId>my-project</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>my-project</name>
<description>My Project</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.0.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>11</java.version>
<spring-cloud.version>Greenwich.M3</spring-cloud.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>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-aws</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/com.zaxxer/HikariCP -->
<dependency>
<groupId>com.zaxxer</groupId>
<artifactId>HikariCP</artifactId>
<version>3.2.0</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</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>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.1.3.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.datatype</groupId>
<artifactId>jackson-datatype-jsr310</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
<version>2.1.0.RELEASE</version>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt</artifactId>
<version>0.7.0</version>
</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>
<plugin>
<inherited>true</inherited>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
</project>

I have successfully deployed my application on heroku by adding system.properties file in the project root folder.
system.properties
java.runtime.version=11
pom.xml
<version>2.1.7.RELEASE</version>
<properties>
<java.version>11</java.version>
</properties>
`
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>9.4-1206-jdbc42</version>
</dependency>
Reference
https://devcenter.heroku.com/articles/java-support#specifying-a-java-version
The solution is working.

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