Read property from config server in spring boot 2.4

Question

I have below implementation currently working in spring boot 2.3. But when I migrate the same to spring boot 2.4. properties not reading from config server.

Code

@ConditionalOnProperty({"app.xzy.hosts"})
public class clientConfig { 
 // implementation
}

bootstrap.yml

spring:
 cloud:
  config:
   uri: http://main-config-server.com
   username: user
   password: pass
   fail-fast: true

application.yml

app:
 xyz:
  hosts: ${app.main.config.hosts}

application.yml in config server

app:
 main:
  config
   hosts: http://myhost.com

This implementation is working fine in spring boot 2.3. But after the upgrade to spring boot 2.4 this giving below error in the startup.

Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder 'app.xzy.hosts' in value "${app.main.config.hosts}"
at org.springframework.util.PropertyPlaceholderHelper.parseStringValue(PropertyPlaceholderHelper.java:178)
at org.springframework.util.PropertyPlaceholderHelper.replacePlaceholders(PropertyPlaceholderHelper.java:124)
at org.springframework.core.env.AbstractPropertyResolver.doResolvePlaceholders(AbstractPropertyResolver.java:239)
at org.springframework.core.env.AbstractPropertyResolver.resolveRequiredPlaceholders(AbstractPropertyResolver.java:210)

what is the parameters names used to specify config server url — Mohd Alomar

Ruchira Gayan Ranaweera Ruchira Gayan Ranaweera · Accepted Answer · 2021-01-26T11:03:29

Finally figured out the issue.

bootstrap.yml file is no longer enabled by default. You need enable it by adding new dependency in spring cloud 2020.0.0 and it solved my issue.

   <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-bootstrap</artifactId>
    </dependency>

Reference: https://spring.io/blog/2020/10/07/spring-cloud-2020-0-0-m4-aka-ilford-is-available

Read property from config server in spring boot 2.4

1 Answers