I'm trying to use @configurable in spring to use a @autowired service in a non bean class I create.
It doesn't want to work anymore whatever I try.
Can someone tell me what I'm doing wrong? (I did some research but I'm totally clueless now)
Here is a very basic code example I made :
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>2.7.5</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>demo2</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo2</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>17</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-aop</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-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Configuration ComponentScan class
package com.example.demo2;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.aspectj.EnableSpringConfigured;
@Configuration
@ComponentScan
@EnableSpringConfigured
public class AspectJConfig
{
}
@SpringBootApplication class
package com.example.demo2;
import javax.annotation.PostConstruct;
//import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
@SpringBootApplication(exclude = { DataSourceAutoConfiguration.class })
public class Demo2Application
{
//@Autowired
//private HelloWorldService helloWorldService;
public static void main(String[] args)
{
SpringApplication.run(Demo2Application.class, args);
}
@PostConstruct
public void doSomethingIProbablyShouldNotBeDoing()
{
//helloWorldService.sayHello();
HelloWorldClient client = new HelloWorldClient();
client.sayHello();
}
}
class with @Configurable and @Autowired service
package com.example.demo2;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Configurable;
@Configurable
public class HelloWorldClient
{
@Autowired
private HelloWorldService service;
public void sayHello()
{
// Used injected instance of service
service.sayHello();
}
}
@Service class
package com.example.demo2;
import org.springframework.stereotype.Service;
@Service
public class HelloWorldService
{
public void sayHello()
{
System.out.println("Hello world!");
}
}
Also here is a link to my previous post on that subject. I did received an answer to my question that was working. But for whatever reason it doesn't work anymore on my side.
Spring @configurable NullPointerException
