BAEL-3497 IntelliJ Cannot Resolve Spring Boot Configuration Properties (#8775)

Co-authored-by: Oskar <>

spring-boot-modules/spring-boot-properties/pom.xml

@@ -43,6 +43,12 @@
             <artifactId>httpcore</artifactId>
             <version>${httpcore.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-configuration-processor</artifactId>
+            <version>${configuration-processor.version}</version>
+            <optional>true</optional>
+        </dependency>
     </dependencies>
 
     <dependencyManagement>
@@ -121,6 +127,7 @@
         <guava.version>20.0</guava.version>
         <httpcore.version>4.4.11</httpcore.version>
         <resource.delimiter>@</resource.delimiter>
+        <configuration-processor.version>2.2.4.RELEASE</configuration-processor.version>
     </properties>
 
 </project>

spring-boot-modules/spring-boot-properties/src/main/java/com/baeldung/configuration/processor/CustomProperties.java

@@ -0,0 +1,37 @@
+package com.baeldung.configuration.processor;
+
+import org.springframework.boot.context.properties.*;
+import org.springframework.context.annotation.*;
+
+@Configuration
+@ConfigurationProperties(prefix = "com.baeldung")
+public class CustomProperties {
+
+    /**
+     * The url to connect to.
+     */
+    String url;
+
+    /**
+     * The time to wait for the connection.
+     */
+    private int timeoutInMilliSeconds = 1000;
+
+
+    public String getUrl() {
+        return url;
+    }
+
+    public void setUrl(String url) {
+        this.url = url;
+    }
+
+    public int getTimeoutInMilliSeconds() {
+        return timeoutInMilliSeconds;
+    }
+
+    public void setTimeoutInMilliSeconds(int timeoutInMilliSeconds) {
+        this.timeoutInMilliSeconds = timeoutInMilliSeconds;
+    }
+
+}

spring-boot-modules/spring-boot-properties/src/main/java/com/baeldung/configuration/processor/DemoApplication.java

@@ -0,0 +1,12 @@
+package com.baeldung.configuration.processor;
+
+import org.springframework.boot.*;
+import org.springframework.boot.autoconfigure.*;
+
+@SpringBootApplication
+public class DemoApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(DemoApplication.class, args);
+    }
+}

spring-boot-modules/spring-boot-properties/src/main/java/com/baeldung/configuration/processor/PropertyBeanInjection.java

@@ -0,0 +1,22 @@
+package com.baeldung.configuration.processor;
+
+import org.springframework.beans.factory.annotation.*;
+import org.springframework.stereotype.*;
+
+@Component
+public class PropertyBeanInjection {
+
+    private final CustomProperties customProperties;
+
+    PropertyBeanInjection(@Autowired CustomProperties customProperties) {
+        this.customProperties = customProperties;
+    }
+
+    String getUrl() {
+        return customProperties.getUrl();
+    }
+
+    int getTimeoutInMilliseconds() {
+        return customProperties.getTimeoutInMilliSeconds();
+    }
+}

spring-boot-modules/spring-boot-properties/src/test/java/com/baeldung/configuration/processor/PropertyBeanInjectionUnitTest.java

@@ -0,0 +1,24 @@
+package com.baeldung.configuration.processor;
+
+import org.junit.jupiter.api.*;
+import org.junit.runner.*;
+import org.springframework.beans.factory.annotation.*;
+import org.springframework.boot.test.context.*;
+import org.springframework.test.context.*;
+import org.springframework.test.context.junit4.*;
+
+@RunWith(SpringRunner.class)
+@TestPropertySource("/configuration-processor.properties")
+@SpringBootTest(classes = DemoApplication.class)
+class PropertyBeanInjectionUnitTest {
+
+    @Autowired
+    private PropertyBeanInjection propertyBeanInjection;
+
+    @Test
+    void checkThatCustomPropertiesHaveTheCorrectValueFromPropertiesFile() {
+        Assertions.assertEquals("www.abc.test.com", propertyBeanInjection.getUrl());
+        Assertions.assertEquals(2000, propertyBeanInjection.getTimeoutInMilliseconds());
+    }
+
+}

spring-boot-modules/spring-boot-properties/src/test/resources/configuration-processor.properties

@@ -0,0 +1,2 @@
+com.baeldung.url=www.abc.test.com
+com.baeldung.timeout-in-milli-seconds=2000