I got a "Whitelabel Error Page" when using Eureka server - spring-boot

Question

I created a spring cloud project using SPRING INITIALIZR. My project structure is as below:
enter image description here
The DemoApplication:
package com.example.demo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
#SpringBootApplication
#EnableEurekaServer
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
}
application.properties:
server.port=8888
eureka.client.register-with-eureka=false
eureka.client.fetch-registry=false
eureka.instance.hostname=localhost
eureka.client.service-url.defaultZone=localhost:8888/eureka
spring.application.name=appName
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.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>2.1.1.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>Greenwich.M3</spring-cloud.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-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>
</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>
But when I visit localhost:8888, the following error occurs:
Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.
Sun Dec 02 11:23:36 CST 2018
There was an unexpected error (type=Not Found, status=404).
No message available
I don't konw why this happens.How can I solve this?

Answer 1

at-least the latest version of SpringBoot and Cloud requires these configs for Eureka UI to come up:
#in application.yml
spring:
freemarker:
template-loader-path: classpath:/templates/
prefer-file-system-access: false
or
#in application.properties
spring.freemarker.template-loader-path= classpath:/templates/
spring.freemarker.prefer-file-system-access= false
See here:
https://cloud.spring.io/spring-cloud-static/spring-cloud-netflix/2.1.0.RELEASE/multi/multi_spring-cloud-eureka-server.html#netflix-eureka-server-starter

Answer 2

For me, I have generated the project using start.spring.io and I have chosen Eureka Server, I did not know that I need to add #EnableEurekaServer myself on top of the application. It worked by adding that.

Answer 3

I had the same problem when using Greenwich.M3 spring cloud version. For me it worked when changing the spring cloud version to Finchley.SR1
<spring-cloud.version>Finchley.SR1</spring-cloud.version>

Answer 4

I am using spring boot 3.0.2 and spring cloud 2022.0.0. There is no need to specify EnableEurekaClient annotation anymore. The spring-cloud-starter-netflix-eureka-client dependency needs to be added for services.

Answer 5

this is working for me:
application.properties file:
server.port=8888
eureka.client.register-with-eureka=false
eureka.client.fetch-registry=false
eureka.instance.hostname=localhost
eureka.client.service-url.defaultZone=http://localhost:8888/eureka
spring.application.name=appName
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.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>2.1.1.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>Greenwich.M3</spring-cloud.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-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>
</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>
visit : localhost:8888

Answer 6

I use spring boot 2.2.1, spring cloud version Hoxton.RELEASE (
<spring-cloud.version>Hoxton.RELEASE</spring-cloud.version>),my settings is:
spring.application.name=testserver
server.port=8888
eureka.client.register-with-eureka=false
eureka.client.fetch-registry=false
eureka.instance.hostname=localhost
eureka.client.serviceUrl.defaultZone=http://${eureka.instance.hostname}:${server.port}/eureka/
And for me url is http://localhost:8888/ (not http://localhost:8888/eureka).
For server, url depends on server.port and server.servlet.context-path properties (so, if i set server.servlet.context-path=/eureka, url will be http://localhost:8888/eureka)

Answer 7

I am using springboot 3.0.0 version and java 17. These versions are not working together stable. I tried to all the suggestions above but it did not work in my case. I finally found solution for my own case.
It started appearing, when I changed the jdk version from "eclipse temurin jdk 17 version" to "open jdk 19".
Edit: 
After the solution, on the client side, I cannot register my service to Eureka service. When I change the spring version as "2.7.5", it works.