Develop Reference

Refresh Scope without config Server

i want to refresh bean when database is updated in runtime, so want to use /refresh endpoint to manually trigger it and refresh bean with new value.
but currently we are not using config server - can anyone guide how i can only make use of refresh scope
I just want to make use of refresh scope without needing config server.
My bean get value from the database for example
#Configuration
public class AppConfiguration {
#Autowired
MyRepository myRepo;
#Bean
#RefreshScope
DemoWebClient getDemoWebClient() {
String currentTime = new Date().getTime() + "";
return new DemoWebClient(myRepo.getTenantId());
}
}
tried to use spring cloud starter
but it is trying to connect config server
2022-01-16 13:25:10.733 INFO 17884 --- [-144.54.177.213] c.c.c.ConfigServicePropertySourceLocator : Connect Timeout Exception on Url - http://localhost:8888. Will be trying the next url if available
2022-01-16 13:25:10.733 WARN 17884 --- [-144.54.177.213] c.c.c.ConfigServicePropertySourceLocator : Could not locate PropertySource: I/O error on GET request for "http://localhost:8888/application/default": Connection refused: connect; nested exception is java.net.ConnectException: Connection refused: connect
2022-01-16 13:25:13.836 INFO 17884 --- [extShutdownHook] o.s.s.concurrent.ThreadPoolTaskExecutor : Shutting down ExecutorService 'applicationTaskExecutor'
tried to disable config server lookup - didn't work
spring.cloud.config.enabled=false
spring.cloud.config.import-check.enabled=false
below is 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>2.2.8.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>RefreshScopeDemoApp</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>RefreshScopeDemoApp</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>11</java.version>
<spring-cloud.version>Hoxton.SR8</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-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>

You need to have the actuator enabled on your application. Then you can just call the endpoint /actuator/refresh of your application, to refresh the beans that need to be refreshed.
The important thing you must understand is that, the actuator must be enabled on the client application of the config server, meaning the application that connects to the config server and not the actual config server.

Why bootstrap.properties is ignored by spring-cloud-starter-config?

My goal is to get the config for world-service from a config-service.
The architecture:
config-service with dependency spring-cloud-config-server at localhost:8888
world-service with dependency the spring-web and spring-cloud-starter-config.
What I have done:
I have set up the Config Server and send a GET request to http://localhost:8888/hello-service/master and the config server get the hello-service.properties from the config-repo repository. (If you need the config-service's source code, I will push it to this repository.)
My expected result:
The world-service use port 8081.
My actual result:
The world-service use port 8080.
bootstrap.properties
spring.application.name=world-service
spring.cloud.config.uri=http://localhost:8888
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>2.4.0</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>world-service</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>world-service</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>11</java.version>
<spring-cloud.version>2020.0.0-M5</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-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>

With Spring Cloud 2020, they made a change in how bootstrap works and you have to include a new starter: spring-cloud-starter-bootstrap.

I spent a day on it and finally found a solution. It may help others
You need to add new dependency
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-bootstrap</artifactId>
</dependency>
According to the Spring Cloud 2020.0
Bootstrap, provided by spring-cloud-commons, is no longer enabled by
default. If your project requires it, it can be re-enabled by
properties or by a new starter.
To re-enable by properties set spring.cloud.bootstrap.enabled=true or
spring.config.use-legacy-processing=true. These need to be set as an
environment variable, java system property or a command line argument.
The other option is to include the new spring-cloud-starter-bootstrap
(in your POM file).
I used the first option and that worked for me.

Spring Boot 2.4 introduced a new way to import configuration data via the spring.config.import property. This is now the default way to bind to Config Server.
To connect to config server set the following in application.yml:
spring:
application:
name: APPLICATION_NAME
config:
import: optional:configserver:http://USER:PASSWORD#MY_HOST:PORT/
You can see more details in: https://docs.spring.io/spring-cloud-config/docs/3.0.0/reference/html/#config-data-import

EnableConfigServer is not working for native location in spring boot

I am trying to configure a configuration server for all the properties in our application using #EnableConfigServer in spring boot. Please see the code below :
#EnableConfigServer
#SpringBootApplication
public class ConfigServerApplication {
public static void main(String[] args) {
SpringApplication.run(ConfigServerApplication.class, args);
}
}
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>2.1.6.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.cdk.config</groupId>
<artifactId>configserver</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>configserver</name>
<description>Contains all the configurations/properties required by all the services</description>
<properties>
<java.version>1.8</java.version>
<spring-cloud.version>Greenwich.SR1</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-config-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>
</project>
application.properties
spring.application.name=config-server
server.port=9090
spring.cloud.config.server.native.searchLocations=file://Users/Sankest/StarterProjects/MicroServices/AllConfigurations/
spring.profiles.active=native
Copied all the property files to : /Users/Sankest/StarterProjects/MicroServices/AllConfigurations/
But when I try to access url at http://localhost:9090/config-server/default I am not seeing any property files and getting the following response:
{"name":"config-server","profiles":["default"],"label":null,"version":null,"state":null,"propertySources":[]}

Add dependencies
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-config-server</artifactId>
</dependency>

Correct value should be spring.cloud.config.server.native.searchLocations=file:///Users/Sankest/StarterProjects/MicroServices/AllConfigurations/ with 3 front slashes after file:. One way to verify whether path is correct or not, even without running the application, is to paste the path in browser and check whether it shows all the files.
For default profile make sure either file name is application.yml or application.properties.
For other profiles e.g. dev, file name should be application-dev.yml or application-dev.properties (if all are in the same folder), then http://localhost:9090/config-server/dev would show both dev and default profile entries.

I don't think so you are accessing the correct endpoint.
For example :
If you are having three files in your AllConfigurations folder.
The file can be yml or properties.
application-dev.yml
application-test.yml
application-prod.yml
The name in the left side of the - is application name and name in right side is profile.
So the endpoint for application-dev.yml will be
 http://localhost:9090/application/dev
From the client to access the specific profile file in the config-server you need to set the active profile.
If you client application name is test
spring.profile.active=dev
Then it will return test-dev file to your client from config server.

Netflix Zuul server - /routes endpoint not available

In this coding exercise for learning microservices, I've created a Netflix Zuul project for service routing my microservices.
Sadly, the /routes endpoint does not seem to be mounted. Everything else seems to be working fine: Defining prefixes and setting up specific routes for my services.
There are no errors on the zuul server log files.
When I try to hit the /routes url on postman, I get an 404 error:
My Zuul application class:
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.zuul.EnableZuulProxy;
#SpringBootApplication
#EnableZuulProxy
public class ZuulServerApplication {
public static void main(String[] args) {
SpringApplication.run(ZuulServerApplication.class, args);
}
}
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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion> <!--should be set to 4.0.0 -->
<groupId>com.booking.system.hotel</groupId>
<version>0.0.1-SNAPSHOT</version>
<artifactId>hotel-gateway-service-server</artifactId>
<name>Hotel Gateway service - zuul</name>
<description>Hotel Gateway service - it uses Netflix Zuul Proxy Server</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.5.RELEASE</version>
</parent>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Finchley.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.8</java.version>
<start-class>com.booking.system.hotel.zuulsvr.ZuulServerApplication</start-class>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-zuul</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-config</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-config-client</artifactId>
</dependency>
</dependencies>
<build>
<finalName>hotel-gateway-service-server</finalName> <!--name of the jar -->
<plugins>
<!-- packages the project as an executable jar, as an Spring Boot application -->
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<!-- used for running tests at various stages -->
</plugins>
</build>
</project>
bootstrap.yml file:
spring:
application:
name: hotel-gateway-service-server
profiles:
active:
default
cloud:
config:
enabled: true
Zuul configuration file from configuration server:
zuul.ignored-services: "*"
zuul.prefix: /api
zuul.routes.hotel-reservations-service: /reservations/**
zuul.routes.hotel-rooms-service: /rooms/**
docker-compose.yml entry for initializing the zuul gateway server:
hotel-gateway-service-server: #zuul server
image: imageprefix/hotel-gateway-service-server
ports:
- 5555:5555
environment:
PROFILE: "dev"
SERVER_PORT: "5555"
CONFIGSERVER_URI: "http://hotel-configuration-server:8888"
CONFIGSERVER_PORT: "8888"
EUREKASERVER_URI: "http://hotel-service-discovery-server:8761/eureka/"
EUREKASERVER_PORT: "8761"
I don't seem to spot what I am missing.

The actuator base path has changed to /actuator. So you need to use /actuator/routes. It is also not enabled by default.
management.endpoints.web.exposure.include=*

Run spring boot application error: Cannot instantiate interface org.springframework.context.ApplicationListener

I have a spring project and try to make it use spring boot and to run at embadded tomcat following :
https://spring.io/guides/gs/rest-service/
This is my Application
//#Configuration
//#EnableAspectJAutoProxy
#SpringBootApplication
#ComponentScan(basePackages = "gux.prome")
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
If I use maven command: mvn spring-boot:run, the project starts fine, but I need to debug , so I run this main method at InteliJ, exception occurs:
Exception in thread "main" java.lang.IllegalArgumentException: Cannot instantiate interface org.springframework.context.ApplicationListener : org.springframework.boot.logging.ClasspathLoggingApplicationListener
at org.springframework.boot.SpringApplication.createSpringFactoriesInstances(SpringApplication.java:414)
at org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:394)
at org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:385)
at org.springframework.boot.SpringApplication.initialize(SpringApplication.java:263)
at org.springframework.boot.SpringApplication.<init>(SpringApplication.java:237)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1191)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1180)
at gux.prome.config.Application.main(Application.java:19)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)
Caused by: java.lang.NoClassDefFoundError: org/springframework/context/event/GenericApplicationListener
....
This is the pom:
<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>gux</groupId>
<artifactId>prome-data</artifactId>
<version>1.0-SNAPSHOT</version>
<name>prome-data Maven Webapp</name>
<url>http://maven.apache.org</url>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.3.3.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- guava -->
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>18.0</version>
</dependency>
<!-- end of guava -->
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
<version>2.9.2</version>
</dependency>
</dependencies>
<properties>
<java.version>1.7</java.version>
</properties>
<build>
<finalName>prome-data</finalName>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<!--<plugin>-->
<!-- use java 7 -->
<!--<artifactId> maven-compiler-plugin</artifactId>-->
<!--<version>3.1</version>-->
<!--<configuration>-->
<!--<source> 1.7</source> -->
<!--<target> 1.7</target>-->
<!--</configuration>-->
<!--</plugin>-->
</plugins>
</build>
<!--<repositories>-->
<!--<repository>-->
<!--<id>spring-releases</id>-->
<!--<url>http://repo.spring.io/libs-release</url>-->
<!--</repository>-->
<!--</repositories>-->
<!--<pluginRepositories>-->
<!--<pluginRepository>-->
<!--<id>spring-releases</id>-->
<!--<url>http://repo.spring.io/libs-release</url>-->
<!--</pluginRepository>-->
<!--</pluginRepositories>-->
</project>

This is a symptom of a version mismatch somewhere in your Spring dependencies, but not necessarily just Spring Boot and Spring itself. I had this between my Spring Boot parent:
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.3.5.RELEASE</version>
<relativePath></relativePath>
</parent>
and my Spring Cloud Config dependency:
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-config-client</artifactId>
<version>1.0.4.RELEASE</version>
</dependency>
For some reason, I am not able to define the spring-cloud-config-client dependency without an explicit version declaration.
Updating both to the latest release version (1.3.5.RELEASE and 1.1.1.RELEASE) solved it.
Conclusion
Update your dependencies to the latest correct ones

For ones using Gradle, I solved this issue setting the version of the Spring Boot Gradle Plugin in my library and in my main project to the same value:
plugins {
id("org.springframework.boot") version "2.2.2.RELEASE"
}

i had the same error , i just changed the release version of the spring boot parent and now everything works right