Can not read configurations from vault in spring boot application

Question

I am trying to read two simple values from vault in spring boot app. no success and I do not know why. here is my code:

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>3.2.0</version>
        <relativePath/>
        <!-- lookup parent from repository -->
    </parent>
    <groupId>com.company</groupId>
    <artifactId>vaultdemo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>pom</packaging>
    <name>vaultdemo</name>
    <description>vaultdemo</description>
    <properties>
        <java.version>17</java.version>
        <spring-cloud.version>2023.0.0</spring-cloud.version>
        <maven.compiler.source>17</maven.compiler.source>
        <maven.compiler.target>17</maven.compiler.target>
    </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-vault-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.vault</groupId>
            <artifactId>spring-vault-core</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>

VaultConfiguration.java:

@ConfigurationProperties(value = "knf")
public class VaultConfiguration {

    private String username;
    private String password;

    public VaultConfiguration(String username, String password) {
        this.username = username;
        this.password = password;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
}

VaultdemoApplication.java :

@SpringBootApplication
@EnableConfigurationProperties(VaultConfiguration.class)
public class VaultdemoApplication {


    public static void main(String[] args) {
        ConfigurableApplicationContext context = SpringApplication.run(VaultdemoApplication.class, args);
        VaultConfiguration bean =  context.getBean(VaultConfiguration.class);
        System.out.println(bean.getUsername());
        System.out.println(bean.getPassword());
    }

}

application.properties :

spring.application.name=spring-boot-hashicorp-vault-sample
spring.cloud.vault.token=hvs.blomXkLGAvs6sXTHcLFYgbqb
spring.cloud.vault.scheme=http
spring.cloud.vault.enabled=true
spring.cloud.vault.uri=http://127.0.0.1:8200
spring.cloud.vault.port=8200
spring.cloud.vault.kv.enabled=true
spring.cloud.vault.kv.backend=secret

image of the values in vault:

When I run the app It prints null for username and password. Any ideas to make it work?

Answer 1

Well I finally found the issues. First, My packaging was POM. My mistake is that I changed the packaging to POM to test something else, but I forgot to edit it again. My app did not even read the application.properties file. in target/classes folder there was no properties file. so I changed it to jar and also changed the application.properties to application.yml. its working fine now.

my application.yml:

server:
  port: 8081

spring:
  config:
    import: vault://
  cloud:
    vault:
      uri: http://127.0.0.1:8200
      token: hvs.blomXkLGAvs6sXTHcLFYgbqb
      kv:
        enabled: true
        backend: secret
      scheme: http