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HTTP Status 500 – Internal Server Error While sending a mail from java mail

I am getting this error while sending out mail from my project.
Applications I was using are:
Eclipse IDE
Apache Tomcat
Here is the error
```Servlet.service() for servlet [controler.ForgotPassword] in context with path [/Banking_App] threw exception [Servlet execution threw an exception] with root cause
java.lang.ClassNotFoundException: com.sun.activation.registries.LogSupport
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1365)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1188)
at javax.activation.MailcapCommandMap.<init>(MailcapCommandMap.java:179)
at javax.activation.CommandMap.getDefaultCommandMap(CommandMap.java:85)
at javax.activation.DataHandler.getCommandMap(DataHandler.java:167)
at javax.activation.DataHandler.getDataContentHandler(DataHandler.java:629)
at javax.activation.DataHandler.writeTo(DataHandler.java:329)
at javax.mail.internet.MimeUtility.getEncoding(MimeUtility.java:340)
at javax.mail.internet.MimeBodyPart.updateHeaders(MimeBodyPart.java:1575)
at javax.mail.internet.MimeMessage.updateHeaders(MimeMessage.java:2271)
at javax.mail.internet.MimeMessage.saveChanges(MimeMessage.java:2231)
at javax.mail.Transport.send(Transport.java:123)
at controler.ForgotPassword.service(ForgotPassword.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:830)
Jul 17, 2020 7:28:31 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [controler.ForgotPassword] in context with path [/Banking_App] threw exception [Servlet execution threw an exception] with root cause
java.lang.NoClassDefFoundError: com/sun/activation/registries/LogSupport
at javax.activation.MailcapCommandMap.<init>(MailcapCommandMap.java:179)
at javax.activation.CommandMap.getDefaultCommandMap(CommandMap.java:85)
at javax.activation.DataHandler.getCommandMap(DataHandler.java:167)
at javax.activation.DataHandler.getDataContentHandler(DataHandler.java:629)
at javax.activation.DataHandler.writeTo(DataHandler.java:329)
at javax.mail.internet.MimeUtility.getEncoding(MimeUtility.java:340)
at javax.mail.internet.MimeBodyPart.updateHeaders(MimeBodyPart.java:1575)
at javax.mail.internet.MimeMessage.updateHeaders(MimeMessage.java:2271)
at javax.mail.internet.MimeMessage.saveChanges(MimeMessage.java:2231)
at javax.mail.Transport.send(Transport.java:123)
at controler.ForgotPassword.service(ForgotPassword.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:830)```
Here is the java class from where it will send the mail:-
"ForgotPassword.java"
```#WebServlet("/ForgotPassword")
public class ForgotPassword extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* #see HttpServlet#HttpServlet()
*/
public ForgotPassword() {
super();
// TODO Auto-generated constructor stub
}
/**
* #see HttpServlet#service(HttpServletRequest request, HttpServletResponse response)
*/
protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String email=request.getParameter("email");
HttpSession session1=request.getSession(true);
session1.setAttribute("email",email);
String fromEmail="abc#gmail.com";
String psw="XYZ";
String subject="DO NOT REPLY: Mail from Java Program";
String msg="Hi, Click this link to reset your password "
+ "http://localhost:3030/Banking_App/resetPassWord.jsp";
Properties prop=new Properties();
prop.put("mail.smtp.host","smtp.gmail.com");
prop.put("mail.smtp.port", 587);
prop.put("mail.smtp.auth", "true");
prop.put("mail.smtp.starttls.enable", "true");
Session session= Session.getDefaultInstance(prop
, new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(fromEmail, psw);
}
}
);
try {
MimeMessage mesg=new MimeMessage(session);
mesg.setFrom(new InternetAddress(fromEmail));
mesg.addRecipient(Message.RecipientType.TO, new InternetAddress(email));
mesg.setSubject(subject);
mesg.setText(msg);
Transport.send(mesg);
System.out.println("Mail Sent!!");
response.sendRedirect("/Banking_App/forgotPassWordSuccessful.jsp");
} catch (AddressException e) {
e.printStackTrace();
} catch (MessagingException e) {
e.printStackTrace();
}
}
}```
I was trying to send a link through this mail for resetting the password, where I used two jar files and deploy them in project
javax.mail
javax.activation
Thank you in advance.

Try adding this dependency and see if it works:
Gradle:
implementation 'com.sun.activation:javax.activation:1.2.0'
Maven:
<dependency>
<groupId>com.sun.activation</groupId>
<artifactId>javax.activation</artifactId>
<version>1.2.0</version>
</dependency>
You can also read this article for more info.

Spring WS interceptor error - WSHandler: application provided null or empty password

I have to configure the interceptor to use Signature Timestamp actions for an SOAP application using Spring WS.
I do the request with SOAP-UI with a configured project with the signature.
For that i have this beans in a custom config file:
#Bean
public Wss4jSecurityInterceptor securityInterceptor() {
try {
Properties prop = new Properties();
prop.load(new FileInputStream(new File("F:/Develop/ODEC/CAECV/miscelanea/keystore.properties")));
CryptoFactoryBean cryptoFactoryBean = new CryptoFactoryBean();
cryptoFactoryBean.setConfiguration(prop);
cryptoFactoryBean.afterPropertiesSet();
Wss4jSecurityInterceptor interceptor = new Wss4jSecurityInterceptor();
interceptor.setSecurementActions("Signature Timestamp");
interceptor.setSecurementSignatureUser("gestiona");
interceptor.setSecurementSignatureKeyIdentifier("DirectReference");
interceptor.setSecurementSignatureAlgorithm("http://www.w3.org/2000/09/xmldsig#rsa-sha1");
interceptor.setSecurementSignatureParts("{Content}{"+InformeControlEndpoint.NAMESPACE_URI+"}getInformeControlResponse");
interceptor.setValidationSignatureCrypto(cryptoFactoryBean.getObject());
interceptor.setSecurementSignatureCrypto(cryptoFactoryBean.getObject());
interceptor.afterPropertiesSet();
return interceptor;
} catch(Exception e) {
throw new RuntimeException("Error en la configuración del interceptor");
}
}
#Override
public void addInterceptors(List<EndpointInterceptor> interceptors) {
try {
interceptors.add(securityInterceptor());
} catch (Exception e) {
throw new RuntimeException("could not initialize security interceptor");
}
}
And the error throwed when i do a request is that:
2020-05-05 09:52:49.107 ERROR 27228 --- [nio-8080-exec-1] o.s.w.s.s.w.Wss4jSecurityInterceptor : Could not secure response: WSHandler: application provided null or empty password; nested exception is org.apache.wss4j.common.ext.WSSecurityException: WSHandler: application provided null or empty password
org.springframework.ws.soap.security.wss4j2.Wss4jSecuritySecurementException: WSHandler: application provided null or empty password; nested exception is org.apache.wss4j.common.ext.WSSecurityException: WSHandler: application provided null or empty password
at org.springframework.ws.soap.security.wss4j2.Wss4jSecurityInterceptor.secureMessage(Wss4jSecurityInterceptor.java:577) ~[spring-ws-security-3.0.8.RELEASE.jar:na]
at org.springframework.ws.soap.security.AbstractWsSecurityInterceptor.handleResponse(AbstractWsSecurityInterceptor.java:157) ~[spring-ws-security-3.0.8.RELEASE.jar:na]
at org.springframework.ws.server.MessageDispatcher.triggerHandleResponse(MessageDispatcher.java:371) [spring-ws-core-3.0.8.RELEASE.jar:na]
at org.springframework.ws.server.MessageDispatcher.dispatch(MessageDispatcher.java:239) [spring-ws-core-3.0.8.RELEASE.jar:na]
at org.springframework.ws.server.MessageDispatcher.receive(MessageDispatcher.java:176) [spring-ws-core-3.0.8.RELEASE.jar:na]
at org.springframework.ws.transport.support.WebServiceMessageReceiverObjectSupport.handleConnection(WebServiceMessageReceiverObjectSupport.java:89) [spring-ws-core-3.0.8.RELEASE.jar:na]
at org.springframework.ws.transport.http.WebServiceMessageReceiverHandlerAdapter.handle(WebServiceMessageReceiverHandlerAdapter.java:61) [spring-ws-core-3.0.8.RELEASE.jar:na]
at org.springframework.ws.transport.http.MessageDispatcherServlet.doService(MessageDispatcherServlet.java:293) [spring-ws-core-3.0.8.RELEASE.jar:na]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) [spring-webmvc-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) [spring-webmvc-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:660) [tomcat-embed-core-9.0.33.jar:9.0.33]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) [spring-webmvc-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) [tomcat-embed-core-9.0.33.jar:9.0.33]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) [tomcat-embed-core-9.0.33.jar:9.0.33]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.33.jar:9.0.33]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) [tomcat-embed-websocket-9.0.33.jar:9.0.33]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.33.jar:9.0.33]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.33.jar:9.0.33]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) [spring-web-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.33.jar:9.0.33]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.33.jar:9.0.33]
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) [spring-web-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.33.jar:9.0.33]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.33.jar:9.0.33]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) [spring-web-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.33.jar:9.0.33]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.33.jar:9.0.33]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) [tomcat-embed-core-9.0.33.jar:9.0.33]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.33.jar:9.0.33]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) [tomcat-embed-core-9.0.33.jar:9.0.33]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.33.jar:9.0.33]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.33.jar:9.0.33]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.33.jar:9.0.33]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.33.jar:9.0.33]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373) [tomcat-embed-core-9.0.33.jar:9.0.33]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) [tomcat-embed-core-9.0.33.jar:9.0.33]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) [tomcat-embed-core-9.0.33.jar:9.0.33]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1594) [tomcat-embed-core-9.0.33.jar:9.0.33]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.33.jar:9.0.33]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [na:1.8.0_241]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [na:1.8.0_241]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.33.jar:9.0.33]
at java.lang.Thread.run(Unknown Source) [na:1.8.0_241]
Caused by: org.apache.wss4j.common.ext.WSSecurityException: WSHandler: application provided null or empty password
at org.apache.wss4j.dom.handler.WSHandler.getPasswordCB(WSHandler.java:1149) ~[wss4j-ws-security-dom-2.2.3.jar:2.2.3]
at org.apache.wss4j.dom.action.SignatureAction.execute(SignatureAction.java:59) ~[wss4j-ws-security-dom-2.2.3.jar:2.2.3]
at org.apache.wss4j.dom.handler.WSHandler.doSenderAction(WSHandler.java:238) ~[wss4j-ws-security-dom-2.2.3.jar:2.2.3]
at org.springframework.ws.soap.security.wss4j2.Wss4jHandler.doSenderAction(Wss4jHandler.java:63) ~[spring-ws-security-3.0.8.RELEASE.jar:na]
at org.springframework.ws.soap.security.wss4j2.Wss4jSecurityInterceptor.secureMessage(Wss4jSecurityInterceptor.java:574) ~[spring-ws-security-3.0.8.RELEASE.jar:na]
... 45 common frames omitted
Thanks for the help :D

For your security interceptor you need to set the password type as follows:
setSecurenmentPasswordType(WSConstants.PW_NONE)
if you don't want or need to provide a password.

Error using hibernate transaction in Servlet

I don't know how the method getCurrentSession() working in javaBean which be used at servlet
I have configed hibernate sessionFactory at applicationContext.xml,and 'current_session_context_class' at hibernate.cfg.xml.
this is my service bean:
#Service()
public class serviceDao{
#Autowired
private sessionFactory sessionFactory;
public session getSession(){
return sessionFactory.getCurrentSession();
}
public void startTransaction(){
getSession().beginTransaction();
}
public void submitTransaction(){
getSession().getTransaction().commit();
}
public void doSomething(){
getSession.createQuery("...");
......
}
}
this is servlet
public class CommentAction extends HttpServlet {
private serviceDao serviceDao;
#Override
public void init() throws ServletException {
super.init();
ApplicationContext context = WebApplicationContextUtils.getWebApplicationContext(getServletContext());
serviceDao = (serviceDao) context.getBean("serviceDao");
}
public void doPost(){
serviceDao.startTransaction();
serviceDao.doSomething();
serviceDao.submitTransaction();
}
}
If the servlet processes 10 requests in a row, it will report an error.
09-Nov-2019 23:19:11.206 [http-nio-8080-exec-123] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [commentAction] in context with path [] threw exception
java.lang.IllegalStateException: Transaction already active
at org.hibernate.engine.transaction.internal.TransactionImpl.begin(TransactionImpl.java:74)
at org.hibernate.internal.AbstractSharedSessionContract.beginTransaction(AbstractSharedSessionContract.java:467)
at sun.reflect.GeneratedMethodAccessor251.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.hibernate.context.internal.ThreadLocalSessionContext$TransactionProtectionWrapper.invoke(ThreadLocalSessionContext.java:350)
at com.sun.proxy.$Proxy358.beginTransaction(Unknown Source)
at com.qiang.dao.serviceDao.startTransaction(serviceDao.java:28)
at com.qiang.dao.serviceDao$$FastClassBySpringCGLIB$$19d44572.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:736)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:671)
at com.qiang.dao.serviceDao$$EnhancerBySpringCGLIB$$71a65c7d.startTransaction(<generated>)
at com.qiang.servlet.CommentAction.doPost(CommentAction.java:35)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at com.qiang.servlet.LoginFilter.doFilter(LoginFilter.java:61)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:678)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1579)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)

Hello you can check the java documentations , explaining clearly what is the real problem
public class IllegalStateException
extends RuntimeException
Signals that a method has been invoked at an illegal or inappropriate time. In other words, the Java environment or Java application is not in an appropriate state for the requested operation.
Since:
JDK1.1
See Also:
Serialized Form
enter link description here

I get java.lang.NullPointerException: null when I try to initialize the method in Vaadin View

I am learning Java Spring. When I try to use a method to get data from a database, I get this error:
java.lang.NullPointerException: null
at com.exam.kino.repository.SeansRepository.findAll(SeansRepository.java:59) ~[classes/:na]
at com.exam.kino.views.ChoseNumberOfTicketsView.<init>(ChoseNumberOfTicketsView.java:56) ~[classes/:na]
at com.exam.kino.views.KinoUI.init(KinoUI.java:18) ~[classes/:na]
at com.vaadin.ui.UI.doInit(UI.java:776) ~[vaadin-server-8.8.3.jar:8.8.3]
at com.vaadin.server.communication.UIInitHandler.getBrowserDetailsUI(UIInitHandler.java:218) [vaadin-server-8.8.3.jar:8.8.3]
at com.vaadin.server.communication.UIInitHandler.synchronizedHandleRequest(UIInitHandler.java:76) [vaadin-server-8.8.3.jar:8.8.3]
at com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:40) [vaadin-server-8.8.3.jar:8.8.3]
at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1602) [vaadin-server-8.8.3.jar:8.8.3]
at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:445) [vaadin-server-8.8.3.jar:8.8.3]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:712) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:459) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:352) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.springframework.web.servlet.mvc.ServletForwardingController.handleRequestInternal(ServletForwardingController.java:141) [spring-webmvc-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:177) [spring-webmvc-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:52) [spring-webmvc-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1039) [spring-webmvc-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942) [spring-webmvc-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005) [spring-webmvc-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908) [spring-webmvc-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:660) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882) [spring-webmvc-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) [tomcat-embed-websocket-9.0.21.jar:9.0.21]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) [spring-web-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:109) [spring-web-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92) [spring-web-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:109) [spring-web-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) [spring-web-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:109) [spring-web-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) [spring-web-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:109) [spring-web-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:853) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1587) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.21.jar:9.0.21]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_201]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_201]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.21.jar:9.0.21]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_201]
My method is called in the class responsible for View of Vaadin. When they try to call it in the main class for the test everything is OK.
This is my methods inside Repository class my ask is about findAll class:
#Repository
public class SeansRepository {
#Autowired
JdbcTemplate jdbcTemplate;
public Seans findById(long id) {
return jdbcTemplate.queryForObject("select * from seans where id=? ", new Object[] { id },
new BeanPropertyRowMapper<Seans>(Seans.class));
}
public Collection<Seans> findAll() {
Collection<Seans> seans = (Collection<Seans>) jdbcTemplate.query("select * from seans", new BeanPropertyRowMapper(Seans.class));
return seans;
}
public int deleteById(long id) {
return jdbcTemplate.update("delete from seans where id=?", new Object[] { id });
}
}
This is how methods is called inside View class:
#DesignRoot
#AutoGenerated
#SuppressWarnings("serial")
public class ChoseNumberOfTicketsView extends AbsoluteLayout implements View{
protected TextField nameTextField;
protected TextField surnameTextField;
protected Label menuLabel;
protected TextField emailTextField;
protected TextField dticketsTextField;
protected TextField nticketsTextField;
protected ComboBox<Seans> movieComboBox;
private SeansRepository repository;
public ChoseNumberOfTicketsView() {
Design.read(this);
repository = new SeansRepository();
movieComboBox = new ComboBox<>("Chose the movie");
movieComboBox.setItems(repository.findAll());
}
}
I am trying to get the list of movies and place it in ComboBox for choosing it.
I am adding a UI class where I have instance of my views:
#SpringUI
public class KinoUI extends UI{
Navigator navigator;
#Override
protected void init(VaadinRequest request) {
getPage().setTitle("Exam");
navigator = new Navigator(this, this);
navigator.addView("", new StartView());
navigator.addView("chosenumberoftickets", new ChoseNumberOfTicketsView());
}
}

Thank you for adding your view code.
The issue is that you create your SeansRepository yourself with the new keyword. Doing this, it will not be managed by Spring, so Spring will not autowire your JdbcTemplate.
Instead, you need to autowire your SeansRepository as well, try this
#Autowired
public ChoseNumberOfTicketsView(SeansRepository repository) {
Design.read(this);
this.repository = repository;
movieComboBox = new ComboBox<>("Chose the movie");
movieComboBox.setItems(repository.findAll());
}

How to fix: java.io.NotSerializableException: org.apache.spark.api.java.JavaSparkContext for wordCountProgram

I tried writing a simple rest controller in springboot that accepts a file and a string and searches in that file how many time the string is found, basically a word search and count.
I have a master and runner running on my pc and the springboot application connects without any problems. I tried using without a 'dedicated' spark master and it worked ok but after i made it connect to my desired problem the problem started occurring.
I also tried using lambda expressions but that got me other problems so i tried to make it easier.
Spark config:
#Configuration
public class SparkConfig {
#Value("${spark.app.name}")
private String appname;
#Value("${spark.master}")
private String masterUri;
#Bean
public SparkConf conf(){
System.out.println(appname + " " + masterUri);
return new SparkConf()
.setAppName(appname)
.setMaster(masterUri);
}
#Bean
public JavaSparkContext sc(){
return new JavaSparkContext(conf());
}
Endpoint:
#RequestMapping(value = "/file-word-count",method = RequestMethod.POST)
public String fileWordCount(#RequestParam("file") MultipartFile file, #RequestParam String word) {
return wordCountService.countFileWords(file,word);
}
service
#Service
#Component
public class WordCountService implements Serializable {
#Autowired
JavaSparkContext sc;
public String countFileWords(MultipartFile file, String word) {
String result = null;
try {
JavaRDD<String> textFile = sc.textFile(convertMultiToFile(file).getPath());
JavaRDD<String> words = textFile.filter(new Function<String, Boolean>() {
#Override
public Boolean call(String s) throws Exception {
return s.contains(word);
}
});
result = String.valueOf(words.count());
}
catch(IOException e){
System.out.println(e.getMessage());
}
return result;
}
public File convertMultiToFile(MultipartFile mFile) throws IOException {
File file = new File("temp","tempTextFile");
FileUtils.writeByteArrayToFile(file,mFile.getBytes());
return file;
}
}
console output:
2019-06-25 22:11:08.462 ERROR 5960 --- [nio-9090-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.apache.spark.SparkException: Task not serializable] with root cause
java.io.NotSerializableException: org.apache.spark.api.java.JavaSparkContext
Serialization stack:
- object not serializable (class: org.apache.spark.api.java.JavaSparkContext, value: org.apache.spark.api.java.JavaSparkContext#47c997cb)
- field (class: com.licenta.service.WordCountService, name: sc, type: class org.apache.spark.api.java.JavaSparkContext)
- object (class com.licenta.service.WordCountService, com.licenta.service.WordCountService#4152741c)
- field (class: com.licenta.service.WordCountService$1, name: this$0, type: class com.licenta.service.WordCountService)
- object (class com.licenta.service.WordCountService$1, com.licenta.service.WordCountService$1#22ae6915)
- field (class: org.apache.spark.api.java.JavaRDD$$anonfun$filter$1, name: f$1, type: interface org.apache.spark.api.java.function.Function)
- object (class org.apache.spark.api.java.JavaRDD$$anonfun$filter$1, <function1>)
at org.apache.spark.serializer.SerializationDebugger$.improveException(SerializationDebugger.scala:40) ~[spark-core_2.11-2.4.3.jar:2.4.3]
at org.apache.spark.serializer.JavaSerializationStream.writeObject(JavaSerializer.scala:46) ~[spark-core_2.11-2.4.3.jar:2.4.3]
at org.apache.spark.serializer.JavaSerializerInstance.serialize(JavaSerializer.scala:100) ~[spark-core_2.11-2.4.3.jar:2.4.3]
at org.apache.spark.util.ClosureCleaner$.ensureSerializable(ClosureCleaner.scala:400) ~[spark-core_2.11-2.4.3.jar:2.4.3]
at org.apache.spark.util.ClosureCleaner$.org$apache$spark$util$ClosureCleaner$$clean(ClosureCleaner.scala:393) ~[spark-core_2.11-2.4.3.jar:2.4.3]
at org.apache.spark.util.ClosureCleaner$.clean(ClosureCleaner.scala:162) ~[spark-core_2.11-2.4.3.jar:2.4.3]
at org.apache.spark.SparkContext.clean(SparkContext.scala:2326) ~[spark-core_2.11-2.4.3.jar:2.4.3]
at org.apache.spark.rdd.RDD$$anonfun$filter$1.apply(RDD.scala:388) ~[spark-core_2.11-2.4.3.jar:2.4.3]
at org.apache.spark.rdd.RDD$$anonfun$filter$1.apply(RDD.scala:387) ~[spark-core_2.11-2.4.3.jar:2.4.3]
at org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:151) ~[spark-core_2.11-2.4.3.jar:2.4.3]
at org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:112) ~[spark-core_2.11-2.4.3.jar:2.4.3]
at org.apache.spark.rdd.RDD.withScope(RDD.scala:363) ~[spark-core_2.11-2.4.3.jar:2.4.3]
at org.apache.spark.rdd.RDD.filter(RDD.scala:387) ~[spark-core_2.11-2.4.3.jar:2.4.3]
at org.apache.spark.api.java.JavaRDD.filter(JavaRDD.scala:78) ~[spark-core_2.11-2.4.3.jar:2.4.3]
at com.licenta.service.WordCountService.countFileWords(WordCountService.java:35) ~[classes/:na]
at com.licenta.controller.CountController.fileWordCount(CountController.java:29) ~[classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_161]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_161]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_161]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_161]
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:189) ~[spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) ~[spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102) ~[spring-webmvc-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:892) ~[spring-webmvc-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:797) ~[spring-webmvc-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038) ~[spring-webmvc-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942) ~[spring-webmvc-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005) ~[spring-webmvc-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908) ~[spring-webmvc-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:660) ~[tomcat-embed-core-9.0.17.jar:9.0.17]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882) ~[spring-webmvc-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) ~[tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.17.jar:9.0.17]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.17.jar:9.0.17]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) ~[spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.17.jar:9.0.17]
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92) ~[spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.17.jar:9.0.17]
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) ~[spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.17.jar:9.0.17]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) ~[spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:200) ~[tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:834) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1415) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.17.jar:9.0.17]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_161]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_161]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.17.jar:9.0.17]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_161]
2019-06-25 22:41:00.704 INFO 5960 --- [er-event-loop-8] o.apache.spark.storage.BlockManagerInfo : Removed broadcast_0_piece0 on DESKTOP-TF9C4EG:55462 in memory (size: 20.4 KB, free: 898.5 MB)
I expect to get a string that has the number of the word occurrences.
Hope that i was clear in explaining, if not do tell and ill try to answer as best i can.

The problem is the new Function<String, Boolean>(), it is an anonymous class and has a reference to WordCountService and transitive to JavaSparkContext. To avoid that you can make it a static nested class.
static class WordCounter implements Function<String, Boolean>, Serializable {
private final String word;
public WordCounter(String word){
this.word = word;
}
#Override
public Boolean call(String s) throws Exception {
return s.contains(word);
}
}
and use it with
JavaRDD<String> words = textFile.filter(new WordCounter(word));

Every Spark node should load classes which are required for execution of your logic. In your case it is class with countFileWords method
To fix your problem you have to do the following steps:
Implement countFileWords function in separate module(you need jar file with class where countFileWords is implemented)
Add dependency to this module to your web project where WordCountService is implemented
Set path to Jar file to JavaSparkContext using public void addJar(String path)
public void addJar(String path) Adds a JAR dependency for all tasks to
be executed on this SparkContext in the future. The path passed can be
either a local file, a file in HDFS (or other Hadoop-supported
filesystems), or an HTTP, HTTPS or FTP URI.