BAEL-6532: Define main class when using multiple profiles in a Spring Boot project (#14267)

Co-authored-by: Tapan Avasthi <tavasthi@Tapans-MacBook-Air.local>

spring-boot-modules/spring-boot-basic-customization/pom.xml

@@ -1,7 +1,7 @@
 <?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"
+         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">
+         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>
     <artifactId>spring-boot-basic-customization</artifactId>
     <name>spring-boot-basic-customization</name>
@@ -39,4 +39,50 @@
         <start-class>com.baeldung.changeport.CustomApplication</start-class>
     </properties>
 
+    <profiles>
+        <profile>
+            <id>errorhandling</id>
+            <properties>
+                <spring.boot.mainclass>com.baeldung.errorhandling.ErrorHandlingApplication</spring.boot.mainclass>
+            </properties>
+        </profile>
+        <profile>
+            <id>filter</id>
+            <properties>
+                <spring.boot.mainclass>com.baeldung.bootcustomfilters.SpringBootFiltersApplication</spring.boot.mainclass>
+            </properties>
+        </profile>
+        <profile>
+            <id>customapplication</id>
+            <properties>
+                <spring.boot.mainclass>com.baeldung.changeport.CustomApplication</spring.boot.mainclass>
+            </properties>
+        </profile>
+        <profile>
+            <id>failureanalyzer</id>
+            <properties>
+                <spring.boot.mainclass>com.baeldung.failureanalyzer.FailureAnalyzerApplication</spring.boot.mainclass>
+            </properties>
+        </profile>
+        <profile>
+            <id>favicon</id>
+            <properties>
+                <spring.boot.mainclass>com.baeldung.favicon.FaviconApplication</spring.boot.mainclass>
+            </properties>
+        </profile>
+    </profiles>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+                <version>1.5.2.RELEASE</version>
+                <configuration>
+                    <mainClass>${spring.boot.mainclass}</mainClass>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
 </project>

spring-boot-modules/spring-boot-basic-customization/src/main/java/com/baeldung/bootcustomfilters/SpringBootFiltersApplication.java

@@ -2,13 +2,15 @@ package com.baeldung.bootcustomfilters;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Profile;
 
 /**
  * Boot application
  * @author hemant
  *
  */
-@SpringBootApplication
+@Profile("filter")
+@SpringBootApplication(scanBasePackages = "com.baeldung.bootcustomfilters.*")
 public class SpringBootFiltersApplication {
 
 	public static void main(String[] args) {

spring-boot-modules/spring-boot-basic-customization/src/main/java/com/baeldung/changeport/CustomApplication.java

@@ -4,8 +4,10 @@ import java.util.Collections;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Profile;
 
-@SpringBootApplication
+@Profile("customapplication")
+@SpringBootApplication(scanBasePackages = "com.baeldung.changeport")
 public class CustomApplication {
 
     public static void main(String[] args) {

spring-boot-modules/spring-boot-basic-customization/src/main/java/com/baeldung/errorhandling/ErrorHandlingApplication.java

@@ -2,7 +2,9 @@ package com.baeldung.errorhandling;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Profile;
 
+@Profile("errorhandling")
 @SpringBootApplication(scanBasePackages = "com.baeldung.errorhandling")
 public class ErrorHandlingApplication {
 

spring-boot-modules/spring-boot-basic-customization/src/main/java/com/baeldung/failureanalyzer/FailureAnalyzerApplication.java

@@ -2,10 +2,12 @@ package com.baeldung.failureanalyzer;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Profile;
 
 import javax.annotation.security.RolesAllowed;
 
-@SpringBootApplication
+@Profile("failureanalyzer")
+@SpringBootApplication(scanBasePackages = "com.baeldung.failureanalyzer")
 public class FailureAnalyzerApplication {
     @RolesAllowed("*")
     public static void main(String[] args) {

spring-boot-modules/spring-boot-basic-customization/src/main/java/com/baeldung/favicon/FaviconApplication.java

@@ -2,8 +2,10 @@ package com.baeldung.favicon;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Profile;
 
-@SpringBootApplication
+@Profile("favicon")
+@SpringBootApplication(scanBasePackages = "com.baeldung.favicon")
 public class FaviconApplication {
 
     public static void main(String[] args) {

spring-boot-modules/spring-boot-basic-customization/src/test/java/com/baeldung/failureanalyzer/FailureAnalyzerAppIntegrationTest.java

@@ -1,13 +1,16 @@
 package com.baeldung.failureanalyzer;
 
 import ch.qos.logback.classic.spi.ILoggingEvent;
+
 import com.baeldung.failureanalyzer.utils.ListAppender;
+
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.BeanCreationException;
 import org.springframework.boot.SpringApplication;
 
 import java.util.Collection;
+import java.util.Properties;
 import java.util.stream.Collectors;
 
 import static org.assertj.core.api.Assertions.assertThat;
@@ -27,7 +30,11 @@ public class FailureAnalyzerAppIntegrationTest {
     @Test
     public void givenBeanCreationErrorInContext_whenContextLoaded_thenFailureAnalyzerLogsReport() {
         try {
-            SpringApplication.run(FailureAnalyzerApplication.class);
+            Properties properties = new Properties();
+            properties.setProperty("spring.profiles.active", "failureanalyzer");
+            SpringApplication app = new SpringApplication(FailureAnalyzerApplication.class);
+            app.setDefaultProperties(properties);
+            app.run();
         } catch (BeanCreationException e) {
             Collection<String> allLoggedEntries = ListAppender.getEvents()
                 .stream()