I am trying to integrate Spring Boot 2.0.2 with Flowable 6.3.1. and running into a problem where I am unable to deploy a process one-task-process.bpmn20.xml from the resources/processes/ folder. The XML file is not being picked up and the error says:
Caused by: org.flowable.engine.common.api.FlowableIllegalArgumentException: resource 'one-task-process.bpmn20.xml' not found
at org.flowable.engine.impl.repository.DeploymentBuilderImpl.addClasspathResource(DeploymentBuilderImpl.java:80) ~[flowable-engine-6.3.0.jar:6.3.0]
at com.stsi.pss.Application$1.run(Application.java:458) ~[classes/:na]
at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:797) [spring-boot-2.0.2.RELEASE.jar:2.0.2.RELEASE]
... 10 common frames omitted
My Spring Boot Application Starter file is as follows and it also prints out the class path which does not include the processes folder.
imports...
#Configuration
#ComponentScan
#EnableAutoConfiguration
#SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
#Bean
public CommandLineRunner init(final RepositoryService repositoryService,
final RuntimeService runtimeService,
final TaskService taskService) {
return new CommandLineRunner() {
#Override
public void run(String... strings) throws Exception {
ClassLoader cl = ClassLoader.getSystemClassLoader();
URL[] urls = ((URLClassLoader)cl).getURLs();
for(URL url: urls){
System.out.println(url.getFile());
}
System.out.println("Number of process definitions : "
+ repositoryService.createProcessDefinitionQuery().count());
System.out.println("Number of tasks : " + taskService.createTaskQuery().count());
runtimeService.startProcessInstanceByKey("oneTaskProcess");
System.out.println("Number of tasks after process start: "
+ taskService.createTaskQuery().count());
}
};
}
}
I would appreciate any help.
I made a mistake in naming the process definition file. I fixed the filename and the system is working as expected.
Related
I am starting to write an application in spring boot and below is how my package structure looks:
com.practice.spring.project.helloworld.HelloworldApplication.java
com.practice.spring.project.repository.EmployeeRepository.java
com.practice.spring.project.model.Employee.java
Below is how i had my application startup successfully,
#SpringBootApplication
#ComponentScan(basePackages = "com.practice.spring.project.DB", basePackageClasses = InitDatabase.class)
#EnableJpaRepositories(basePackages = "com.practice.spring.project.repository" , basePackageClasses = EmployeeRepository.class)
public class HelloworldApplication {
public static void main(String[] args) {
SpringApplication.run(HelloworldApplication.class, args);
}
#Bean
public CommandLineRunner run(EmployeeRepository employeeRepository) throws Exception {
return (args) -> {
System.out.println("Calling it after the application context is all loaded up");
employeeRepository.save(new Employee("Ashwin", "Architect"));
};
}
}
My question is should I have to specify the base-packages & baseClasses for every class I add ? It would be tough if have 10 packages having 10 different classes.
Am sure there should be an easier way to scan and instantiate classes in different package.
Figured out a way - set the basePackages to com.practice.spring.project.*
#ComponentScan(basePackages = "com.practice.spring.project.*")
Error output, error occurs when the application starts and in the version spring-boot-starter-parent 2.0.5.RELEASE, in 1.5 versions it works fine. In versions 2.0.5 the distribution of the SpringBootServletInitializer file has changed;
Dependency annotations: {}
19:03:05.312 [main] ERROR o.s.b.d.LoggingFailureAnalysisReporter -
***************************
APPLICATION FAILED TO START
***************************
Description:
Parameter 1 of constructor in
org.springframework.boot.autoconfigure.web.servlet.error.ErrorMvcAutoConfiguration required a bean of type 'org.springframework.boot.autoconfigure.web.servlet.DispatcherServletPath' that could not be found.
- Bean method 'dispatcherServletRegistration' not loaded because DispatcherServlet Registration found servlet registration bean dispatcherServletRegistration
Action:
Consider revisiting the entries above or defining a bean of type 'org.springframework.boot.autoconfigure.web.servlet.DispatcherServletPath' in your configuration.
Configuration:
#SpringBootApplication
#Import({
CityContextConfig.class,
CityPersistenceJpaConfig.class,
CityServiceConfig.class,
CityWebConfig.class
})
public class CityApp extends SpringBootServletInitializer {
#Bean
public DispatcherServlet dispatcherServlet() {
return new DispatcherServlet();
}
#Bean
public ServletRegistrationBean dispatcherServletRegistration() {
final ServletRegistrationBean registration = new ServletRegistrationBean<>(dispatcherServlet(), "/api/*");
final Map<String, String> params = new HashMap<String, String>();
params.put("contextClass", "org.springframework.web.context.support.AnnotationConfigWebApplicationContext");
params.put("contextConfigLocation", "org.spring.sec2.spring");
params.put("dispatchOptionsRequest", "true");
registration.setInitParameters(params);
registration.setLoadOnStartup(1);
return registration;
}
//
#Override
protected SpringApplicationBuilder configure(final SpringApplicationBuilder application) {
return application.initializers(new MyApplicationContextInitializer()).sources(CityApp.class);
}
public static void main(final String... args) {
new SpringApplicationBuilder(CityApp.class).initializers(new MyApplicationContextInitializer()).listeners().run(args);
}
}
The project structure is divided into two modules common and webapp
A bit old, but for the record, you can fix it quickly just adding next bean:
#Bean
public DispatcherServletRegistrationBean dispatcherServletRegistrationBean() {
return new DispatcherServletRegistrationBean(dispatcherServlet(), "/");
}
Servlet context path has been changed in 2.x
here are my recommendation which should work
define servlet context path in application.properties.
server.servlet.path=/ # Path of the main dispatcher servlet.
make sure you have #Configuration notation on these configuration classes CityContextConfig.class, CityPersistenceJpaConfig.class, CityServiceConfig.class, CityWebConfig.class
#SpringBootApplication
public class CityApp {
#Override
protected SpringApplicationBuilder configure(final SpringApplicationBuilder application) {
return application.initializers(new MyApplicationContextInitializer()).sources(CityApp.class);
}
public static void main(final String... args) {
new SpringApplicationBuilder(CityApp.class).initializers(new MyApplicationContextInitializer()).listeners().run(args);
}
}
I am also searching for the answer. There is a migration guide from spring 1.5.x to 2.0. here Migration Guide
I think our solution is that. But I dont know how to implement their suggestion.
I have a spring boot 2.0 application that is working fine on embedded tomcat , now I generated a war from this applcation using apply plugin: 'war' in build.gradle file , the war is generated and deployed successfully on websphere 9 ... I tried hitting the context root, it gives the index.html correctly ... but when try to reach any path that was originally reached on the embedded tomcat it gives Error 404: java.io.FileNotFoundException: SRVE0190E: File not found: /path/mapped/in/controller ... can any one tell what is missing ?
this is the SpringBootApplication class code :
#SpringBootApplication
#MapperScan(basePackages = { "com.mypack.dao" })
public class MyApplication extends SpringBootServletInitializer{
#Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(MyApplication.class);
}
public static void main(String[] args) {
SpringApplication.run(MyApplication.class, args);
}
}
I'm testing the integration between Apache Flink and Spring Boot, to run them on IDE is fine, but when I tried to run on Apache Flink Cluster I had one Exception related to ClassLoader.
The classes are really simple:
BootFlinkApplication
#SpringBootApplication
#ComponentScan("com.example.demo")
public class BootFlinkApplication {
public static void main(String[] args) {
System.out.println("some test");
SpringApplication.run(BootFlinkApplication.class, args);
}
}
FlinkTest
#Service
public class FlinkTest {
#PostConstruct
public void init() {
StreamExecutionEnvironment see = StreamExecutionEnvironment.getExecutionEnvironment();
see.fromElements(1, 2, 3, 4)
.filter(new RemoveNumber3Filter()).print();
try {
see.execute();
} catch (Exception e) {
System.out.println("Error executing flink job: " + e.getMessage());
}
}
}
RemoveNumber3Filter
public class RemoveNumber3Filter implements FilterFunction<Integer> {
#Override
public boolean filter(Integer i) throws Exception {
return i != 3;
}
}
Exception:
Caused by: org.apache.flink.runtime.client.JobExecutionException: Job execution failed.
at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$6.apply$mcV$sp(JobManager.scala:897)
at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$6.apply(JobManager.scala:840)
at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$6.apply(JobManager.scala:840)
at scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24)
at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24)
at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:39)
at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:415)
at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
Caused by: org.apache.flink.streaming.runtime.tasks.StreamTaskException: Cannot load user class: com.example.demo.RemoveNumber3Filter
ClassLoader info: URL ClassLoader:
file: '/tmp/blobStore-850f3189-807e-4f8d-a8a6-3bd3c1bd76b4/job_eb93b239080b4d4e09f10f1e3605744d/blob_p-5fd56f3348976c0d333d680fde4a79573c21cd40-48ac0995eee11f38ce3ff4f890102af8' (valid JAR)
Class not resolvable through given classloader.
at org.apache.flink.streaming.api.graph.StreamConfig.getStreamOperator(StreamConfig.java:232)
at org.apache.flink.streaming.runtime.tasks.OperatorChain.createChainedOperator(OperatorChain.java:355)
at org.apache.flink.streaming.runtime.tasks.OperatorChain.createOutputCollector(OperatorChain.java:282)
at org.apache.flink.streaming.runtime.tasks.OperatorChain.<init>(OperatorChain.java:126)
at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:231)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:718)
at java.lang.Thread.run(Thread.java:748)
You probably use the Spring Boot Maven plugin (https://docs.spring.io/spring-boot/docs/current/reference/html/build-tool-plugins-maven-plugin.html) to repackage your Jar to generate an executable jar, however, it uses a custom boot layout which is not supported by Apache Flink's internal class loader. There should be an original jar file next to the one you try to deploy (.jar.original) which you could use for deployment on the Flink cluster.
As an alternative, you can use a different way of generating a Jar with all your dependencies, such as maven-shade (https://maven.apache.org/plugins/maven-shade-plugin/)
I have a very simple Spring Boot application with classes detailed below.
My problem is with the application.properties file and how they get auto-configured. I'm trying to get Groovy Templates to update in dev by setting 'spring.groovy.template.cache: false', however this is not working. I added two more properties to see if the application.properties file was being read. The 'logging.level.org.springframework.web: ERROR' still results in INFO level messages printed to the console. However, some.prop is read correctly into the MyBean class on application start.
Is there a configuration declaration I'm missing for these properties?
src/main/resources/application.properties:
spring.groovy.template.cache: false
logging.level.org.springframework.web: ERROR
some.prop: bob
src/main/java/sample/MyBean.java:
#Component
public class MyBean {
#Value("${some.prop}")
private String prop;
public MyBean() {}
#PostConstruct
public void init() {
System.out.println("================== " + prop + "================== ");
}
}
and src/main/java/sample/Application.java:
#SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
and src/main/java/sample/com/example/MainController.java
#Controller
public class MainController {
#RequestMapping(value="/login", method = RequestMethod.GET)
public ModelAndView risk(#RequestParam Optional<String> error) {
return new ModelAndView("views/login", "error", error);
}
}
It seems you missing scanned your package "sample". Please make sure that you have scanned it.
#ComponentScan({
"sample" })
#SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
Also, your application.properties is right. No problem with it.
It appears the solution was much simpler than I thought:
gradle bootRun
should be used to hot reload templates
gradle run does not work (all compiled classes are just built in build/ )