content of application.properties not processed after upgrading to Spring Boot 2.4.0

[Whisper40]

I'm upgrading my application to the new SpringBoot version.
I'm actually in 2.3.5 using properties files like that :
application-{profilename}.(properties/yaml)

I read those documentation :
https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-Config-Data-Migration-Guide
https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-Config-Data-Migration-Guide

My pom is this one :

I changed from 2.3.5.RELEASE to 2.4.0
I updated the project in eclipse

<?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>
	<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-parent -->
	<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.projet.dev</groupId>
	<artifactId>api</artifactId>
	<version>3.0.0</version>
	<name>api</name>
	<description>ApiMain</description>


	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
		<java.version>11</java.version>
		<maven.compiler.source>11</maven.compiler.source>
        <maven.compiler.target>11</maven.compiler.target>
	</properties>

	<dependencies>
	
	<dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter</artifactId>
    </dependency>
    
		<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>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>
		<dependency>
			<groupId>com.h2database</groupId>
			<artifactId>h2</artifactId>
			<scope>test</scope>
			</dependency>

		<!-- https://mvnrepository.com/artifact/org.hibernate.validator/hibernate-validator -->
		<dependency>
		    <groupId>org.hibernate.validator</groupId>
		    <artifactId>hibernate-validator</artifactId>
		    </dependency>

		<dependency>
			<groupId>org.glassfish</groupId>
			<artifactId>javax.el</artifactId>
			<version>3.0.1-b12</version>
		</dependency>

		<!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
		<dependency>
		    <groupId>org.projectlombok</groupId>
		    <artifactId>lombok</artifactId>
		    <scope>provided</scope>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-security</artifactId>
			</dependency>

		<dependency>
			<groupId>org.springframework.integration</groupId>
			<artifactId>spring-integration-mqtt</artifactId>
			</dependency>

		<dependency>
			<groupId>com.google.code.gson</groupId>
			<artifactId>gson</artifactId>
			</dependency>

		<dependency>
			<groupId>org.springdoc</groupId>
			<artifactId>springdoc-openapi-ui</artifactId>
			<version>1.4.8</version>
		</dependency>
		<dependency>
			<groupId>org.apache.httpcomponents</groupId>
			<artifactId>httpclient</artifactId>
			</dependency>

		<dependency>
			<groupId>org.mapstruct</groupId>
			<artifactId>mapstruct</artifactId>
			<version>1.4.1.Final</version>
		</dependency>

		<dependency>
			<groupId>joda-time</groupId>
			<artifactId>joda-time</artifactId>
			<version>2.10.8</version>
		</dependency>

		<dependency>
			<groupId>org.junit.jupiter</groupId>
			<artifactId>junit-jupiter-api</artifactId>
			<scope>test</scope>
		</dependency>

	</dependencies>
	
	<build>
    <plugins>
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
      </plugin>
    </plugins>
  </build>
	
	
	
</project>

In my application.properties :
spring.config.use-legacy-processing=true

In my application-local.properties :

# DATASOURCE (DataSourceAutoConfiguration & DataSourceProperties)
spring.main.banner-mode=off
# Hibernate ddl auto (create, create-drop, validate, update)
spring.jpa.hibernate.ddl-auto = update
# MANY OTHERS

When i start the app, it lauch without taking the properties !
I tried to apply spring.profiles.active=local in my application.properties but without success !

In vm argument i have this : -Dspring.profiles.active=local
With and without it just does not work..

I was not having any problem with 2.3.5.
spring.main.banner-mode=off works

How i see that properties are not loaded :
I have spring.main.banner-mode=off and the banner is displayed so something wrong.
Datasource properties are not loaded too..

Refer to : https://stackoverflow.com/questions/65008209/upgrade-springboot-2-3-5-to-2-4-0

Thanks for help, i'm sure it can help a lot of people !

For information in spring tool suite 4 4.5.0:
spring.config.use-legacy-processing=true is an unknow property

[bclozel]

Are there comments in your application.properties file? This could be related to #24158

[snicoll]

Indeed, you may confirm that quickly by running this app against 2.4.1-SNAPSHOT.

[Whisper40]

@bclozl Hi ! Thanks bro !!
It was a shit bug !
2.4.1-SNAPSHOT is actually not available in Maven :(

I close it because # was the problem !

[bclozel]

@Whisper40 It's not on Maven Central as it's not a public release, but a SNAPSHOT version. You can add our snapshot repo to your build configuration. You can get the build snippet by generating a new Spring Boot project on https://start.spring.io/ and selecting 2.4.1-SNAPSHOT.

[Whisper40]

@bclozel Thanks for the information :)
I just tested with :: Spring Boot :: (v2.4.1-SNAPSHOT)
The problem of " # " in properties is again present on my side
( yes i clean and then update project and release too)
( i have my lines with # )

Example :

#OpenAPI - Swagger UI
springdoc.swagger-ui.path=/swagger-ui.html
#Log
logging.level.org.hibernate.SQL=ERROR
logging.level.org.hibernate.type=ERROR
#TimeZone
spring.jpa.properties.hibernate.jdbc.time_zone = Europe/Paris
spring.jackson.time-zone: Europe/Paris

[bclozel]

Can you create a small, sample application that reproduces the issue?
Creating a small project on GitHub or uploading it here would be perfect. You can start from a fresh project on start.spring.io and add properties/specific things to your application until you can reproduce the issue.

Thanks!

[Whisper40]

Just downloaded a default project and added properties. I run it with the same Vm argument -Dspring.profiles.active=local
I'm not having the problem with 2.4.1-SNAPSHOT with default project
But with mine yes, really strange, will try to investigate

Other thing : With default project and mine :
https://prnt.sc/vqkwes

[Update] Working with 2.4.1-SNAPSHOT and # in properties with my project.
I have got a problem of update project
But the red thing in pom is always present
-> Red thing does not appear with SpringToolSuite 4.5.0
-> Appears with 4.9.0

[snicoll]

Thanks for the follow-up. We can't unfortunately provide you support with the error in your IDE. Please follow-up on StackOverflow for that.

[ivanetinajero]

Hi everyone. I have the same problem. I updated Spring Boot from 2.3.6.RELEASE to 2.4.0 and it seems that application.properties is not loading. I have the following in application.properties:

empleosapp.ruta.imagenes=c:/empleos/img-vacantes/

After running, I got the error:
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'vacantesController': Injection of autowired dependencies failed; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'empleosapp.ruta.imagenes' in value "${empleosapp.ruta.imagenes}"

Using 2.3.6.RELEASE it works fine

Thanks!

[bclozel]

This doesn't seem to be related to this issue. Please create a new issue with a sample project reproducing the problem, as the current description doesn't provide enough information.
Thanks