Start Spring Boot Application in Flowable by Service Task


#1

Hey Guys,
I have Spring Boot Application, that I want to start by a Service Task in a BPMN Model. This Model I want to start in the Flowable UI (Task Application). I always get the following error log:

org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.context.ApplicationContextException: Unable to start ServletWebServerApplicationContext due to missing ServletWebServerFactory bean.

My Pom.xml look like this:

<dependencies>
	<dependency>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-web</artifactId>
	</dependency>
	<dependency>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-web-services</artifactId>
	</dependency>

	<dependency>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-test</artifactId>
		<scope>test</scope>
	</dependency>
	<dependency>
		<groupId>org.flowable</groupId>
		<artifactId>flowable-engine</artifactId>
		<version>6.4.1</version>
	</dependency>
	<dependency>
		<groupId>org.flowable</groupId>
		<artifactId>flowable-spring-boot-starter</artifactId>
		<version>6.4.1</version>
	</dependency>
	<dependency>
		<groupId>com.google.code.scriptengines</groupId>
		<artifactId>scriptengines-javascript</artifactId>
		<version>1.1.1</version>
	</dependency>
	<dependency>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-data-jpa</artifactId>
	</dependency>
	<dependency>
		<groupId>com.h2database</groupId>
		<artifactId>h2</artifactId>
	</dependency>
	<dependency>
		<groupId>mysql</groupId>
		<artifactId>mysql-connector-java</artifactId>
		</dependency>
</dependencies>

<build>
	<plugins>
		<plugin>
			<artifactId>maven-assembly-plugin</artifactId>
			<configuration>
				<archive>
					<manifest>
						<mainClass>fully.qualified.MainClass</mainClass>
					</manifest>
				</archive>
				<descriptorRefs>
					<descriptorRef>jar-with-dependencies</descriptorRef>
				</descriptorRefs>
			</configuration>
			<executions>
				<execution>
					<id>make-assembly</id> <!-- this is used for inheritance merges -->
					<phase>package</phase> <!-- bind to the packaging phase -->
					<goals>
						<goal>single</goal>
					</goals>
				</execution>
			</executions>
		</plugin>
		<plugin>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-maven-plugin</artifactId>
		</plugin>
		<plugin>
			<groupId>org.apache.maven.plugins</groupId>
			<artifactId>maven-surefire-plugin</artifactId>
		</plugin>
	</plugins>
</build>

The Code that I use is the following:

TestApplication.java class:

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class TestApplication {

public static void main(String[] args) {
	SpringApplication.run(TestApplication.class, args);
}

}

The other class to catch the Service Task from the BPMN:

CallTask.java class

import org.flowable.engine.delegate.DelegateExecution;
import org.flowable.engine.delegate.JavaDelegate;

import com.org.TestApplication;

public class CallTask implements JavaDelegate {

@Override
public void execute(DelegateExecution execution) {
	String[] args = { };
	TestSenderApplication.main(args);
}

}

My BPMN Model is just a Service Task, a Start Event and an End Event. I hope you guys can help me.

Best Regards