nested exception is java.lang.NoClassDefFoundError: org/springframework/web/context/request/async/AsyncRequestTimeoutException - spring

Question

I have a spring(4) mvc app where I configured a spring web flow. Hitting the flow url (/context/pizza/buy), I am getting this exception. Full exception trace
SEVERE: Servlet.service() for servlet [dispatcher] in context with path [/SpringWeb] threw exception [Handler processing failed; nested exception is java.lang.NoClassDefFoundError: org/springframework/web/context/request/async/AsyncRequestTimeoutException] with root cause
java.lang.ClassNotFoundException: org.springframework.web.context.request.async.AsyncRequestTimeoutException
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1333)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1167)
at org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver.doResolveException(DefaultHandlerExceptionResolver.java:163)
at org.springframework.web.servlet.handler.AbstractHandlerExceptionResolver.resolveException(AbstractHandlerExceptionResolver.java:136)
at org.springframework.web.servlet.handler.HandlerExceptionResolverComposite.resolveException(HandlerExceptionResolverComposite.java:74)
at org.springframework.web.servlet.DispatcherServlet.processHandlerException(DispatcherServlet.java:1193)
at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1030)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:980)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:528)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1100)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:687)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1520)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1476)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
DispatcherServlet Configuration:
package spittr.config.flow;
import java.util.Arrays;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.validation.beanvalidation.LocalValidatorFactoryBean;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.webflow.config.AbstractFlowConfiguration;
import org.springframework.webflow.definition.registry.FlowDefinitionRegistry;
import org.springframework.webflow.engine.builder.support.FlowBuilderServices;
import org.springframework.webflow.executor.FlowExecutor;
import org.springframework.webflow.mvc.builder.MvcViewFactoryCreator;
import spittr.config.WebConfig;
#Configuration
public class WebFlowConfig extends AbstractFlowConfiguration{
#Autowired
private WebConfig webConfig;
#Bean
public FlowExecutor flowExecutor() {
return getFlowExecutorBuilder(flowRegistry())
.build();
}
#Bean
public FlowDefinitionRegistry flowRegistry() {
return getFlowDefinitionRegistryBuilder(flowBuilderServices())
.setBasePath("/WEB-INF/flows")
.addFlowLocationPattern("/**/*-flow.xml").build();
}
#Bean
public FlowBuilderServices flowBuilderServices() {
return getFlowBuilderServicesBuilder()
.setViewFactoryCreator(mvcViewFactoryCreator())
.setDevelopmentMode(true)
.build();
}
#Bean
public MvcViewFactoryCreator mvcViewFactoryCreator() {
MvcViewFactoryCreator factoryCreator = new MvcViewFactoryCreator();
factoryCreator.setViewResolvers(Arrays.<ViewResolver>asList(this.webConfig.viewResolver()));
factoryCreator.setUseSpringBeanBinding(true);
return factoryCreator;
}
}
public class SpittrWebAppInitializer extends
AbstractAnnotationConfigDispatcherServletInitializer {
#Override
protected Class<?>[] getRootConfigClasses() {
return new Class<?>[] { RootConfig.class, WebConfig.class, WebFlowConfig.class };
}
#Override
protected Class<?>[] getServletConfigClasses() {
return new Class<?>[] { };
}
#Override
protected String[] getServletMappings() {
return new String[] {"/"};
}
#Override
protected void customizeRegistration(ServletRegistration.Dynamic registration) {
registration.setMultipartConfig(new MultipartConfigElement("/tmp/spittr/uploads"));
}
}
Spring Mvc Configuration:
package spittr.config;
import java.io.IOException;
import java.util.LinkedList;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.multipart.MultipartResolver;
import org.springframework.web.multipart.support.StandardServletMultipartResolver;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.view.tiles3.TilesConfigurer;
import org.springframework.web.servlet.view.tiles3.TilesViewResolver;
import org.springframework.webflow.mvc.servlet.FlowHandlerAdapter;
import org.springframework.webflow.mvc.servlet.FlowHandlerMapping;
import spittr.config.flow.PizzaFlowHandler;
import spittr.config.flow.WebFlowConfig;
#Configuration
#EnableWebMvc
#ComponentScan(basePackages={"spittr.web"})
public class WebConfig
extends WebMvcConfigurerAdapter {
#Autowired
private WebFlowConfig webFlowConfig;
#Bean
public FlowHandlerMapping flowHandlerMapping() {
FlowHandlerMapping handlerMapping = new FlowHandlerMapping();
handlerMapping.setOrder(-1);
handlerMapping.setFlowRegistry(this.webFlowConfig.flowRegistry());
return handlerMapping;
}
#Bean
public FlowHandlerAdapter flowHandlerAdapter() {
FlowHandlerAdapter handlerAdapter = new FlowHandlerAdapter();
handlerAdapter.setFlowExecutor(this.webFlowConfig.flowExecutor());
handlerAdapter.setSaveOutputToFlashScopeOnRedirect(true);
return handlerAdapter;
}
#Bean(name="pizza/buy")
public PizzaFlowHandler pizzaFlowHandler() {
return new PizzaFlowHandler();
}
#Bean
public TilesConfigurer tilesConfigurer() {
TilesConfigurer tiles = new TilesConfigurer();
tiles.setDefinitions(new String[] {
"/WEB-INF/layout/tiles.xml"
});
tiles.setCheckRefresh(true);
return tiles;
}
#Bean
public ViewResolver viewResolver() {
return new TilesViewResolver();
}
#Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
configurer.enable();
}
#Bean
public MultipartResolver multipartResolver() throws IOException {
return new StandardServletMultipartResolver();
}
}
Spring Web Flow Configuration:
package spittr.config.flow;
import java.util.Arrays;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.validation.beanvalidation.LocalValidatorFactoryBean;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.webflow.config.AbstractFlowConfiguration;
import org.springframework.webflow.definition.registry.FlowDefinitionRegistry;
import org.springframework.webflow.engine.builder.support.FlowBuilderServices;
import org.springframework.webflow.executor.FlowExecutor;
import org.springframework.webflow.mvc.builder.MvcViewFactoryCreator;
import spittr.config.WebConfig;
#Configuration
public class WebFlowConfig extends AbstractFlowConfiguration{
#Autowired
private WebConfig webConfig;
#Bean
public FlowExecutor flowExecutor() {
return getFlowExecutorBuilder(flowRegistry())
.build();
}
#Bean
public FlowDefinitionRegistry flowRegistry() {
return getFlowDefinitionRegistryBuilder(flowBuilderServices())
.setBasePath("/WEB-INF/flows")
.addFlowLocationPattern("/**/*-flow.xml").build();
}
#Bean
public FlowBuilderServices flowBuilderServices() {
return getFlowBuilderServicesBuilder()
.setViewFactoryCreator(mvcViewFactoryCreator())
.setDevelopmentMode(true)
.build();
}
#Bean
public MvcViewFactoryCreator mvcViewFactoryCreator() {
MvcViewFactoryCreator factoryCreator = new MvcViewFactoryCreator();
factoryCreator.setViewResolvers(Arrays.<ViewResolver>asList(this.webConfig.viewResolver()));
factoryCreator.setUseSpringBeanBinding(true);
return factoryCreator;
}
}
Defined flow directory hierarchies:
Edited: pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.mujahid.home</groupId>
<artifactId>SpringWeb</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>SpringWeb Maven Webapp</name>
<url>http://maven.apache.org</url>
<properties>
<java-version>1.8</java-version>
<org.springframework-version>4.3.5.RELEASE</org.springframework-version>
</properties>
<dependencies>
<!-- https://mvnrepository.com/artifact/org.springframework.webflow/spring-webflow -->
<dependency>
<groupId>org.springframework.webflow</groupId>
<artifactId>spring-webflow</artifactId>
<version>2.4.4.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/net.sourceforge.nekohtml/nekohtml -->
<dependency>
<groupId>net.sourceforge.nekohtml</groupId>
<artifactId>nekohtml</artifactId>
<version>1.9.10</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.thymeleaf/thymeleaf -->
<dependency>
<groupId>org.thymeleaf</groupId>
<artifactId>thymeleaf</artifactId>
<version>m1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.thymeleaf/thymeleaf-spring3 -->
<dependency>
<groupId>org.thymeleaf</groupId>
<artifactId>thymeleaf-spring3</artifactId>
<version>3.0.3.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.tiles/tiles-api -->
<dependency>
<groupId>org.apache.tiles</groupId>
<artifactId>tiles-api</artifactId>
<version>3.0.4</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.tiles/tiles-servlet -->
<dependency>
<groupId>org.apache.tiles</groupId>
<artifactId>tiles-servlet</artifactId>
<version>3.0.4</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.tiles/tiles-core -->
<dependency>
<groupId>org.apache.tiles</groupId>
<artifactId>tiles-core</artifactId>
<version>3.0.4</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.tiles/tiles-jsp -->
<dependency>
<groupId>org.apache.tiles</groupId>
<artifactId>tiles-jsp</artifactId>
<version>3.0.4</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-validator -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>5.2.4.Final</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.5</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-test -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>4.3.5.RELEASE</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.0.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${org.springframework-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${org.springframework-version}</version>
</dependency>
</dependencies>
<build>
<finalName>SpringWeb</finalName>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
<source>${java-version}</source>
<target>${java-version}</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>2.2</version>
<configuration>
<url>http://localhost:8080/manager/text</url>
<server>TomcatServer</server>
<path>/SpringWeb</path>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<version>2.6</version>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>

Answer 1

Problem seems to be with the spring-web.jar - how it is getting resolved. It is getting resolved as transitive dependency of spring-webflow-2.4.4-Release.jar. (Please see the left hand side of the attached file.)
And resolved dependency is spring-web:4.3.0.Release (Right hand side of the image). And this jar doesn't contain the class for which you are getting an exception. You can download the jar from here and check it out.
To solve this problem, add direct dependency as follows:
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${org.springframework-version}</version>
</dependency>
This will override the transitive dependency added by spring-webflow. Though I haven't tried this locally, this should solve your problem.