I have an activity which populates a scroll view for each day of the week and display them with tabs made on the action bar using view pager. Whenever I go back to a tab that I had already visited I get a class cast error.
This is my log cat. Can someone please tell me why this exception is caused.
08-23 05:01:50.589: E/AndroidRuntime(3836): FATAL EXCEPTION: main
08-23 05:01:50.589:E/AndroidRuntime(3836):java.lang.ClassCastException:android.view.AbsSavedState$1 cannot be cast to android.widget.CompoundButton$SavedState
08-23 05:01:50.589: E/AndroidRuntime(3836): at android.widget.CompoundButton.onRestoreInstanceState(CompoundButton.java:379)
08-23 05:01:50.589: E/AndroidRuntime(3836): at android.view.View.dispatchRestoreInstanceState(View.java:12284)
08-23 05:01:50.589: E/AndroidRuntime(3836): at android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:2626)
08-23 05:01:50.589: E/AndroidRuntime(3836): at android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:2626)
08-23 05:01:50.589: E/AndroidRuntime(3836): at android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:2626)
08-23 05:01:50.589: E/AndroidRuntime(3836): at android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:2626)
08-23 05:01:50.589: E/AndroidRuntime(3836): at android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:2626)
08-23 05:01:50.589: E/AndroidRuntime(3836): at android.view.View.restoreHierarchyState(View.java:12262)
08-23 05:01:50.589: E/AndroidRuntime(3836): at android.support.v4.app.Fragment.restoreViewState(Fragment.java:425)
08-23 05:01:50.589: E/AndroidRuntime(3836): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:949)
08-23 05:01:50.589: E/AndroidRuntime(3836): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1104)
08-23 05:01:50.589: E/AndroidRuntime(3836): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
08-23 05:01:50.589: E/AndroidRuntime(3836): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1460)
08-23 05:01:50.589: E/AndroidRuntime(3836): at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:472)
08-23 05:01:50.589: E/AndroidRuntime(3836): at android.support.v4.app.FragmentStatePagerAdapter.finishUpdate(FragmentStatePagerAdapter.java:163)
08-23 05:01:50.589: E/AndroidRuntime(3836): at android.support.v4.view.ViewPager.populate(ViewPager.java:1068)
08-23 05:01:50.589: E/AndroidRuntime(3836): at android.support.v4.view.ViewPager.setCurrentItemInternal(ViewPager.java:550)
08-23 05:01:50.589: E/AndroidRuntime(3836): at android.support.v4.view.ViewPager.setCurrentItemInternal(ViewPager.java:509)
08-23 05:01:50.589: E/AndroidRuntime(3836): at android.support.v4.view.ViewPager.setCurrentItem(ViewPager.java:490)
08-23 05:01:50.589: E/AndroidRuntime(3836): at com.example.attendogram.Start.onTabSelected(Start.java:195)
08-23 05:01:50.589: E/AndroidRuntime(3836): at com.android.internal.app.ActionBarImpl.selectTab(ActionBarImpl.java:572)
08-23 05:01:50.589: E/AndroidRuntime(3836): at com.android.internal.app.ActionBarImpl$TabImpl.select(ActionBarImpl.java:1098)
08-23 05:01:50.589: E/AndroidRuntime(3836): at com.android.internal.widget.ScrollingTabContainerView$TabClickListener.onClick(ScrollingTabContainerView.java:547)
08-23 05:01:50.589: E/AndroidRuntime(3836): at android.view.View.performClick(View.java:4240)
08-23 05:01:50.589: E/AndroidRuntime(3836): at android.view.View$PerformClick.run(View.java:17721)
08-23 05:01:50.589: E/AndroidRuntime(3836): at android.os.Handler.handleCallback(Handler.java:730)
08-23 05:01:50.589: E/AndroidRuntime(3836): at android.os.Handler.dispatchMessage(Handler.java:92)
08-23 05:01:50.589: E/AndroidRuntime(3836): at android.os.Looper.loop(Looper.java:137)
08-23 05:01:50.589: E/AndroidRuntime(3836): at android.app.ActivityThread.main(ActivityThread.java:5103)
08-23 05:01:50.589: E/AndroidRuntime(3836): at java.lang.reflect.Method.invokeNative(Native Method)
08-23 05:01:50.589: E/AndroidRuntime(3836): at java.lang.reflect.Method.invoke(Method.java:525)
08-23 05:01:50.589: E/AndroidRuntime(3836): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
08-23 05:01:50.589: E/AndroidRuntime(3836): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
08-23 05:01:50.589: E/AndroidRuntime(3836): at dalvik.system.NativeStart.main(Native Method)
I had a similar issue. In searching for answers, I came across this post.
Unexplainable ClassCastException in android.widget.ProgressBar.onRestoreInstanceState
In all of our cases, android.view.AbsSavedState$1 was being cast to some other component.
The accepted answer says that the problem is the application is reusing ids.
"Double check that your application does not reuse the same ID in two different places"
If you are using eclipse, the Lint tool can be helpful in tracking down the duplicate id. . I hope this helps.
Related
I'm getting below error when trying delete tmp.txt file under C:\testing folder using SystemCommandTasklet of Spring Batch. My OS is windows 10. Any quick pointer what went wrong?
Error:
java.util.concurrent.ExecutionException: java.io.IOException: Cannot run program "del" (in directory "C:\testing"): CreateProcess error=2, The system cannot find the file specified
at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[na:na]
at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191) ~[na:na]
at org.springframework.batch.core.step.tasklet.SystemCommandTasklet.execute(SystemCommandTasklet.java:126) ~[spring-batch-core-4.3.4.jar:4.3.4]
at org.springframework.batch.core.step.tasklet.TaskletStep$ChunkTransactionCallback.doInTransaction(TaskletStep.java:407) ~[spring-batch-core-4.3.4.jar:4.3.4]
at org.springframework.batch.core.step.tasklet.TaskletStep$ChunkTransactionCallback.doInTransaction(TaskletStep.java:331) ~[spring-batch-core-4.3.4.jar:4.3.4]
at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:140) ~[spring-tx-5.3.13.jar:5.3.13]
at org.springframework.batch.core.step.tasklet.TaskletStep$2.doInChunkContext(TaskletStep.java:273) ~[spring-batch-core-4.3.4.jar:4.3.4]
at org.springframework.batch.core.scope.context.StepContextRepeatCallback.doInIteration(StepContextRepeatCallback.java:82) ~[spring-batch-core-4.3.4.jar:4.3.4]
at org.springframework.batch.repeat.support.RepeatTemplate.getNextResult(RepeatTemplate.java:375) ~[spring-batch-infrastructure-4.3.4.jar:4.3.4]
at org.springframework.batch.repeat.support.RepeatTemplate.executeInternal(RepeatTemplate.java:215) ~[spring-batch-infrastructure-4.3.4.jar:4.3.4]
at org.springframework.batch.repeat.support.RepeatTemplate.iterate(RepeatTemplate.java:145) ~[spring-batch-infrastructure-4.3.4.jar:4.3.4]
at org.springframework.batch.core.step.tasklet.TaskletStep.doExecute(TaskletStep.java:258) ~[spring-batch-core-4.3.4.jar:4.3.4]
at org.springframework.batch.core.step.AbstractStep.execute(AbstractStep.java:208) ~[spring-batch-core-4.3.4.jar:4.3.4]
at org.springframework.batch.core.job.SimpleStepHandler.handleStep(SimpleStepHandler.java:152) ~[spring-batch-core-4.3.4.jar:4.3.4]
at org.springframework.batch.core.job.AbstractJob.handleStep(AbstractJob.java:413) ~[spring-batch-core-4.3.4.jar:4.3.4]
at org.springframework.batch.core.job.SimpleJob.doExecute(SimpleJob.java:136) ~[spring-batch-core-4.3.4.jar:4.3.4]
at org.springframework.batch.core.job.AbstractJob.execute(AbstractJob.java:320) ~[spring-batch-core-4.3.4.jar:4.3.4]
at org.springframework.batch.core.launch.support.SimpleJobLauncher$1.run(SimpleJobLauncher.java:149) ~[spring-batch-core-4.3.4.jar:4.3.4]
at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50) ~[spring-core-5.3.13.jar:5.3.13]
at org.springframework.batch.core.launch.support.SimpleJobLauncher.run(SimpleJobLauncher.java:140) ~[spring-batch-core-4.3.4.jar:4.3.4]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:564) ~[na:na]
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:344) ~[spring-aop-5.3.13.jar:5.3.13]
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:198) ~[spring-aop-5.3.13.jar:5.3.13]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) ~[spring-aop-5.3.13.jar:5.3.13]
at org.springframework.batch.core.configuration.annotation.SimpleBatchConfiguration$PassthruAdvice.invoke(SimpleBatchConfiguration.java:128) ~[spring-batch-core-4.3.4.jar:4.3.4]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.13.jar:5.3.13]
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:215) ~[spring-aop-5.3.13.jar:5.3.13]
at com.sun.proxy.$Proxy50.run(Unknown Source) ~[na:na]
at org.springframework.boot.autoconfigure.batch.JobLauncherApplicationRunner.execute(JobLauncherApplicationRunner.java:199) ~[spring-boot-autoconfigure-2.6.1.jar:2.6.1]
at org.springframework.boot.autoconfigure.batch.JobLauncherApplicationRunner.executeLocalJobs(JobLauncherApplicationRunner.java:173) ~[spring-boot-autoconfigure-2.6.1.jar:2.6.1]
at org.springframework.boot.autoconfigure.batch.JobLauncherApplicationRunner.launchJobFromProperties(JobLauncherApplicationRunner.java:160) ~[spring-boot-autoconfigure-2.6.1.jar:2.6.1]
at org.springframework.boot.autoconfigure.batch.JobLauncherApplicationRunner.run(JobLauncherApplicationRunner.java:155) ~[spring-boot-autoconfigure-2.6.1.jar:2.6.1]
at org.springframework.boot.autoconfigure.batch.JobLauncherApplicationRunner.run(JobLauncherApplicationRunner.java:150) ~[spring-boot-autoconfigure-2.6.1.jar:2.6.1]
at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:758) ~[spring-boot-2.6.1.jar:2.6.1]
at org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:748) ~[spring-boot-2.6.1.jar:2.6.1]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:309) ~[spring-boot-2.6.1.jar:2.6.1]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1301) ~[spring-boot-2.6.1.jar:2.6.1]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1290) ~[spring-boot-2.6.1.jar:2.6.1]
at com.example.SystemCommandJobApplication.main(SystemCommandJobApplication.java:48) ~[classes/:na]
Caused by: java.io.IOException: Cannot run program "del" (in directory "C:\testing"): CreateProcess error=2, The system cannot find the file specified
at java.base/java.lang.ProcessBuilder.start(ProcessBuilder.java:1142) ~[na:na]
at java.base/java.lang.ProcessBuilder.start(ProcessBuilder.java:1073) ~[na:na]
at java.base/java.lang.Runtime.exec(Runtime.java:591) ~[na:na]
at java.base/java.lang.Runtime.exec(Runtime.java:415) ~[na:na]
at org.springframework.batch.core.step.tasklet.SystemCommandTasklet$1.call(SystemCommandTasklet.java:103) ~[spring-batch-core-4.3.4.jar:4.3.4]
at org.springframework.batch.core.step.tasklet.SystemCommandTasklet$1.call(SystemCommandTasklet.java:99) ~[spring-batch-core-4.3.4.jar:4.3.4]
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na]
at java.base/java.lang.Thread.run(Thread.java:832) ~[na:na]
Caused by: java.io.IOException: CreateProcess error=2, The system cannot find the file specified
at java.base/java.lang.ProcessImpl.create(Native Method) ~[na:na]
at java.base/java.lang.ProcessImpl.<init>(ProcessImpl.java:483) ~[na:na]
at java.base/java.lang.ProcessImpl.start(ProcessImpl.java:158) ~[na:na]
at java.base/java.lang.ProcessBuilder.start(ProcessBuilder.java:1109) ~[na:na]
... 7 common frames omitted
SystemCommandJobApplication.java
#SpringBootApplication
#EnableBatchProcessing
public class SystemCommandJobApplication {
#Autowired
private JobBuilderFactory jobBuilderFactory;
#Autowired
private StepBuilderFactory stepBuilderFactory;
#Bean
public Job job() {
return this.jobBuilderFactory.get("systemCommandJob")
.start(systemCommandStep())
.build();
}
#Bean
public Step systemCommandStep() {
return this.stepBuilderFactory.get("systemCommandStep")
.tasklet(systemCommandTasklet())
.build();
}
#Bean
public SystemCommandTasklet systemCommandTasklet() {
SystemCommandTasklet systemCommandTasklet = new SystemCommandTasklet();
systemCommandTasklet.setWorkingDirectory("C:/testing");
// systemCommandTasklet.setCommand("rm -rf tmp.txt"); // Unix
systemCommandTasklet.setCommand("del tmp.txt"); // Windows
systemCommandTasklet.setTimeout(5000);
systemCommandTasklet.setInterruptOnCancel(true);
return systemCommandTasklet;
}
public static void main(String[] args) {
SpringApplication.run(SystemCommandJobApplication.class, args);
}
}
I'm pretty sure that the message "can't find the file specified" is referring to "del" in the attempt to execute that command, not the "del" command's attempt to delete the file.
I'm also pretty sure that despite the possibly misleading name "SystemCommandTasklet", you cannot execute a "built-in" command like "del".
It's looking for an executable on the path, and "del" is not an exe - it's built into cmd.exe.
The easiest way to solve this is probably to create a batch file that does the delete, and execute that, passing it the name of the file to delete.
The (commented out) 'Unix' version of your command will probably work, given the correct path, as 'rm' is an actual executable file. In Debian systems, for example, it's in /bin/rm
I am a newbie to javafx and I am currently working on a project with Maven lib using JavaFX. Although, after adding an anchor pane and a button with some ids, I ran into this error:
Exception in Application start method
java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:464)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:363)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1051)
Caused by: java.lang.RuntimeException: Exception in Application start method
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:900)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:195)
at java.base/java.lang.Thread.run(Thread.java:830)
Caused by: javafx.fxml.LoadException: No controller specified.
/Users/kevintruong/maven-project/InventoryTracker/target/classes/com/flexus/InventoryTracker/primary.fxml:9
at javafx.fxml/javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2621)
at javafx.fxml/javafx.fxml.FXMLLoader.access$100(FXMLLoader.java:105)
at javafx.fxml/javafx.fxml.FXMLLoader$Element.getControllerMethodHandle(FXMLLoader.java:565)
at javafx.fxml/javafx.fxml.FXMLLoader$Element.processEventHandlerAttributes(FXMLLoader.java:607)
at javafx.fxml/javafx.fxml.FXMLLoader$ValueElement.processEndElement(FXMLLoader.java:778)
at javafx.fxml/javafx.fxml.FXMLLoader.processEndElement(FXMLLoader.java:2838)
at javafx.fxml/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2557)
at javafx.fxml/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2466)
at javafx.fxml/javafx.fxml.FXMLLoader.load(FXMLLoader.java:2435)
at com.flexus.InventoryTracker/com.flexus.InventoryTracker.App.loadFXML(App.java:31)
at com.flexus.InventoryTracker/com.flexus.InventoryTracker.App.start(App.java:20)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:846)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:455)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:428)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:427)
at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
Exception running application com.flexus.InventoryTracker.App
[ERROR] Command execution failed.
org.apache.commons.exec.ExecuteException: Process exited with an error: 1 (Exit value: 1)
at org.apache.commons.exec.DefaultExecutor.executeInternal(DefaultExecutor.java:404)
at org.apache.commons.exec.DefaultExecutor.execute(DefaultExecutor.java:166)
at org.openjfx.JavaFXRunMojo.executeCommandLine(JavaFXRunMojo.java:525)
at org.openjfx.JavaFXRunMojo.executeCommandLine(JavaFXRunMojo.java:487)
at org.openjfx.JavaFXRunMojo.execute(JavaFXRunMojo.java:168)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:210)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:156)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:148)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:81)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:56)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:305)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:192)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:105)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:956)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:192)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:282)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:225)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:406)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:347)
org.apache.commons.exec.ExecuteException: Process exited with an error: 1 (Exit value: 1)
at org.apache.commons.exec.DefaultExecutor.executeInternal(DefaultExecutor.java:404)
at org.apache.commons.exec.DefaultExecutor.execute(DefaultExecutor.java:166)
at org.openjfx.JavaFXRunMojo.executeCommandLine(JavaFXRunMojo.java:525)
at org.openjfx.JavaFXRunMojo.executeCommandLine(JavaFXRunMojo.java:487)
at org.openjfx.JavaFXRunMojo.execute(JavaFXRunMojo.java:168)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:210)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:156)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:148)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:81)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:56)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:305)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:192)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:105)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:956)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:192)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:282)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:225)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:406)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:347)
My primary controller:
package com.flexus.InventoryTracker;
import java.io.IOException;
import javafx.fxml.FXML;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
public class PrimaryController {
#FXML
private Button signUp;
#FXML
void switchToSignUp() throws IOException {
App.setRoot("primary");
}
}
My main class:
package com.flexus.InventoryTracker;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
import java.io.IOException;
/**
* JavaFX App
*/
public class App extends Application {
private static Scene scene;
#Override
public void start(Stage stage) throws IOException {
scene = new Scene(loadFXML("primary"));
stage.setScene(scene);
stage.show();
}
static void setRoot(String fxml) throws IOException {
scene.setRoot(loadFXML(fxml));
}
private static Parent loadFXML(String fxml) throws IOException {
FXMLLoader fxmlLoader = new FXMLLoader(App.class.getResource(fxml + ".fxml"));
return fxmlLoader.load();
}
public static void main(String[] args) {
launch();
}
}
My primary fxml:
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.layout.AnchorPane?>
<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" style="-fx-background-color: #FDFEFE;" xmlns="http://javafx.com/javafx/11.0.1" xmlns:fx="http://javafx.com/fxml/1">
<children>
<Button fx:id="signUp" layoutX="529.0" layoutY="14.0" mnemonicParsing="false" onAction="#switchToSignUp" style="-fx-background-color: #FDFEFE;" text="Sign up" textFill="#3498db" underline="true" />
</children>
</AnchorPane>
After hours of research, I still haven't found any solutions for this error yet. Does anybody have any ideas what I have done wrong here?
An InvocationTargetException is never the root of the problem. That exception is thrown when a method is invoked via reflection but that method itself throws an exception. The exception thrown by the invoked-via-reflection method is wrapped by (i.e. the cause of) the InvocationTargetException. The What is a stack trace, and how can I use it to debug my application errors? Q&A provides more information on stack traces and how to read them.
So if we look at the last Caused by in your stack trace, we see the fundamental error is:
Caused by: javafx.fxml.LoadException: No controller specified.
/Users/kevintruong/maven-project/InventoryTracker/target/classes/com/flexus/InventoryTracker/primary.fxml:9
Note: The output starting with "[ERROR] Command execution failed." is from Maven, not your application.
Now, specifying a controller class is not always required; however, in your FXML file:
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.layout.AnchorPane?>
<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity"
minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0"
style="-fx-background-color: #FDFEFE;"
xmlns="http://javafx.com/javafx/11.0.1" xmlns:fx="http://javafx.com/fxml/1">
<children>
<Button fx:id="signUp" layoutX="529.0" layoutY="14.0" mnemonicParsing="false"
onAction="#switchToSignUp" style="-fx-background-color: #FDFEFE;"
text="Sign up" textFill="#3498db" underline="true" />
</children>
</AnchorPane>
You define the onAction attribute for your Button element. This requires a controller to be specified where the controller has the corresponding method. I see you have a class named PrimaryController which has a switchToSignUp() method, so it appears you've simply forgotton to specify the controller in your FXML file. You just need to add that attribute to the root element:
<AnchorPane fx:controller="com.flexus.InventoryTracker.PrimaryController" ...>
...
</AnchorPane>
Note: Following Java naming conventions, package names should be all lowercase.
If you're using Scene Builder, you can specify the controller by going to the "Document" section in the left panel, expand the "Controller" pane, and typing the controller class' name in the text field labeled "Controller class".
For more information about FXML, see Introduction to FXML.
I'm stumped here. I am tooling in a simple jetty server with jersey2 using guice as an injector, and I can return data no problem from API calls. However, if I try and accept a query parameter or a path parameter I get the following cryptic stack trace
2016-08-18 17:21:28,611 [qtp854640632-20] WARN org.eclipse.jetty.server.HttpChannel - /api/mining/listGroups/1
javax.servlet.ServletException: A MultiException has 2 exceptions. They are:
1. java.lang.IllegalArgumentException
2. java.lang.IllegalStateException: Unable to perform operation: method inject on com.data.services.server.rest.api.TestResource
at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:489) ~[jersey-container-servlet-core-2.23.2.jar:na]
at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:427) ~[jersey-container-servlet-core-2.23.2.jar:na]
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:388) ~[jersey-container-servlet-core-2.23.2.jar:na]
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:341) ~[jersey-container-servlet-core-2.23.2.jar:na]
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:228) ~[jersey-container-servlet-core-2.23.2.jar:na]
at com.google.inject.servlet.ServletDefinition.doServiceImpl(ServletDefinition.java:287) ~[guice-servlet-4.0.jar:na]
at com.google.inject.servlet.ServletDefinition.doService(ServletDefinition.java:277) ~[guice-servlet-4.0.jar:na]
at com.google.inject.servlet.ServletDefinition.service(ServletDefinition.java:182) ~[guice-servlet-4.0.jar:na]
at com.google.inject.servlet.ManagedServletPipeline.service(ManagedServletPipeline.java:91) ~[guice-servlet-4.0.jar:na]
at com.google.inject.servlet.ManagedFilterPipeline.dispatch(ManagedFilterPipeline.java:119) ~[guice-servlet-4.0.jar:na]
at com.google.inject.servlet.GuiceFilter$1.call(GuiceFilter.java:133) ~[guice-servlet-4.0.jar:na]
at com.google.inject.servlet.GuiceFilter$1.call(GuiceFilter.java:130) ~[guice-servlet-4.0.jar:na]
at com.google.inject.servlet.GuiceFilter$Context.call(GuiceFilter.java:203) ~[guice-servlet-4.0.jar:na]
at com.google.inject.servlet.GuiceFilter.doFilter(GuiceFilter.java:130) ~[guice-servlet-4.0.jar:na]
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) ~[jetty-servlet-9.2.13.v20150730.jar:9.2.13.v20150730]
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585) ~[jetty-servlet-9.2.13.v20150730.jar:9.2.13.v20150730]
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:221) ~[jetty-server-9.2.13.v20150730.jar:9.2.13.v20150730]
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127) ~[jetty-server-9.2.13.v20150730.jar:9.2.13.v20150730]
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515) ~[jetty-servlet-9.2.13.v20150730.jar:9.2.13.v20150730]
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185) ~[jetty-server-9.2.13.v20150730.jar:9.2.13.v20150730]
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061) ~[jetty-server-9.2.13.v20150730.jar:9.2.13.v20150730]
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) ~[jetty-server-9.2.13.v20150730.jar:9.2.13.v20150730]
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97) ~[jetty-server-9.2.13.v20150730.jar:9.2.13.v20150730]
at org.eclipse.jetty.server.Server.handle(Server.java:499) ~[jetty-server-9.2.13.v20150730.jar:9.2.13.v20150730]
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310) ~[jetty-server-9.2.13.v20150730.jar:9.2.13.v20150730]
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257) [jetty-server-9.2.13.v20150730.jar:9.2.13.v20150730]
at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540) [jetty-io-9.2.13.v20150730.jar:9.2.13.v20150730]
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635) [jetty-util-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555) [jetty-util-9.2.14.v20151106.jar:9.2.14.v20151106]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_77]
Caused by: org.glassfish.hk2.api.MultiException: A MultiException has 2 exceptions. They are:
1. java.lang.IllegalArgumentException
2. java.lang.IllegalStateException: Unable to perform operation: method inject on com.services.server.rest.api.TestResource
My method looks like this
#GET
#Path("test")
def test(#QueryParam("foo") foo: String): String = foo
I know its not a scala problem as I have used dropwizard with scala in another app, but this time I can't seem to figure out what I'm even looking for to figure this out. I have verified that jersey/jetty dependencies are all at the same major version and there aren't any 1.x bindings coming in
I get the error HttpMediaTypeNotAcceptableException when the SseEmitter has timed out.
When searching in SO for this error code, I find only answers relating to registering a converter for the ResponseBody. But I can't see how this could be the same problem I am facing, since the content type is text/event-stream and is handled by Spring automatically.
However, the communication seems to flow good otherwise; the messages are being sent properly to the client.
#RequestMapping(path = "/channel")
#CrossOrigin
public SseEmitter channel() throws IOException {
SseEmitter emitter = new SseEmitter();
// Storing the emitter
// ...
player.setEmitter(emitter);
return emitter;
}
In the player, I do this:
public void setEmitter(SseEmitter emitter) {
if (this.emitter != null) {
// Old emitter must be completed for user
this.emitter.complete();
}
this.emitter = emitter;
this.emitter.onTimeout(() -> {
if (this.emitter != null) this.emitter.complete();
});
this.emitter.onCompletion(() -> this.emitter = null);
}
public void sendMessage(String message) {
if (this.emitter != null) {
emitter.send(message);
}
}
(By the way, is this a good way of handling the emitter; i.e. the registration of onTimeout and onCompletion? The idea is that a new emitter is created on every reconnect and that means the old one needs to be replaced.)
The messages sent are a data structure serialized into JSON text. On the JavaScript client it is correctly deserialized into a JSON object. I have not specified the JSON content anywhere, as I think from the SseEmitter/SSE perspective, it is just text.
During the time the connection is established, everything works fine. At every timeout, the client reconnects as it should.
However I seem to always get the following exception in connection to the timeout and reconnect procedure:
org.springframework.web.HttpMediaTypeNotAcceptableException: Could not find acceptable representation
at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:191) ~[spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.HttpEntityMethodProcessor.handleReturnValue(HttpEntityMethodProcessor.java:183) ~[spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.web.method.support.HandlerMethodReturnValueHandlerComposite.handleReturnValue(HandlerMethodReturnValueHandlerComposite.java:81) ~[spring-web-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:126) ~[spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:832) ~[spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:743) ~[spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) ~[spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:961) ~[spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:895) ~[spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:967) ~[spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:858) ~[spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:687) ~[javax.servlet-api-3.1.0.jar:3.1.0]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:843) ~[spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) ~[javax.servlet-api-3.1.0.jar:3.1.0]
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:812) ~[jetty-servlet-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:587) ~[jetty-servlet-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) ~[jetty-server-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:595) ~[jetty-security-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223) ~[jetty-server-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.server.handler.ContextHandler.__doHandle(ContextHandler.java:1127) ~[jetty-server-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java) ~[jetty-server-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515) ~[jetty-servlet-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185) ~[jetty-server-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061) ~[jetty-server-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) ~[jetty-server-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97) ~[jetty-server-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.server.Server.handleAsync(Server.java:549) ~[jetty-server-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:348) [jetty-server-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.server.HttpChannel.run(HttpChannel.java:262) [jetty-server-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635) [jetty-util-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555) [jetty-util-9.2.14.v20151106.jar:9.2.14.v20151106]
at java.lang.Thread.run(Thread.java:745) [na:na]
I am using Spring Boot with Jetty. I also get this error, but I think it is a consequence of the first:
java.lang.IllegalStateException: Committed
at org.eclipse.jetty.server.Response.resetBuffer(Response.java:1243) ~[jetty-server-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.server.Response.sendError(Response.java:567) ~[jetty-server-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.server.Response.sendError(Response.java:544) ~[jetty-server-9.2.14.v20151106.jar:9.2.14.v20151106]
at javax.servlet.http.HttpServletResponseWrapper.sendError(HttpServletResponseWrapper.java:167) ~[javax.servlet-api-3.1.0.jar:3.1.0]
at javax.servlet.http.HttpServletResponseWrapper.sendError(HttpServletResponseWrapper.java:167) ~[javax.servlet-api-3.1.0.jar:3.1.0]
at org.springframework.security.web.context.OnCommittedResponseWrapper.sendError(OnCommittedResponseWrapper.java:95) ~[spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE]
at org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver.handleHttpMediaTypeNotAcceptable(DefaultHandlerExceptionResolver.java:257) ~[spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver.doResolveException(DefaultHandlerExceptionResolver.java:121) ~[spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.web.servlet.handler.AbstractHandlerExceptionResolver.resolveException(AbstractHandlerExceptionResolver.java:137) [spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.web.servlet.handler.HandlerExceptionResolverComposite.resolveException(HandlerExceptionResolverComposite.java:74) [spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.processHandlerException(DispatcherServlet.java:1185) [spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1022) [spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:973) [spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:895) [spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:967) [spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:858) [spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:687) [javax.servlet-api-3.1.0.jar:3.1.0]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:843) [spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) [javax.servlet-api-3.1.0.jar:3.1.0]
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:812) [jetty-servlet-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:587) [jetty-servlet-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) [jetty-server-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:595) [jetty-security-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223) [jetty-server-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.server.handler.ContextHandler.__doHandle(ContextHandler.java:1127) [jetty-server-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java) [jetty-server-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515) [jetty-servlet-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185) [jetty-server-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061) [jetty-server-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) [jetty-server-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97) [jetty-server-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.server.Server.handleAsync(Server.java:549) [jetty-server-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:348) [jetty-server-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.server.HttpChannel.run(HttpChannel.java:262) [jetty-server-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635) [jetty-util-9.2.14.v20151106.jar:9.2.14.v20151106]
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555) [jetty-util-9.2.14.v20151106.jar:9.2.14.v20151106]
at java.lang.Thread.run(Thread.java:745) [na:na]
The error was not on the server side. After clicking around on the client a couple of times, there were suddenly two client side EventSource objects. This is what caused the errors.
This error occurs on servlet-based servers like jetty or tomcat, because the servlet api doesn't notify when a client connection is closed. The only way to find out if a connection has been closed is to send a message, and stop the sseemitter if a IOException is triggered.
The problem is that the IOException is also dispatched to spring mvc that fails to find a suitable httpmessageconverter, hence throwing a HttpMediaTypeNotAcceptableException.
The best option is to migrate the sse emitter to a netty-powered microservice. In my case, i had to stick to tomcat. Here is how i solved it in my spring boot application :
I added a custom httpmessagecomverter to handle Map for media type text/event-stream
I added an error handler using spring web #ExceptionHandler to mute ClientAbortException
I have the following code that's trying to establish a connection to a remote database. It's throwing an exception, and I can't figure out why.
import java.util.List;
import java.util.ArrayList;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;
import java.sql.ResultSet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import com.model.Bulletin;
Connection connection = getConnection();
Statement statement = connection.createStatement();
private Connection getConnection() {
Connection conn = null;
String url = "jdbc:mysql://address/cpc";
String userName = "user";
String password = "password"; // Don't worry, that's not the real password.
try {
Class.forName("com.mysql.jdbc.Driver");
conn = DriverManager.getConnection(url, userName, password);
} catch (Exception e) {
return null;
}
return conn;
}
Can anyone explain to me why I'm getting this exception?
Uncaught exception from servlet
java.lang.reflect.InvocationTargetException
at com.google.appengine.runtime.Request.process-6673c09727e16cea(Request.java)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:43)
at com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:453)
at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:292)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:255)
at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:176)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265)
at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:211)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:211)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:190)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:75)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:90)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:243)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:176)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:192)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:187)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)
at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:510)
at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:91)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at com.google.tracing.TraceContext$TraceContextRunnable.runInContext(TraceContext.java:449)
at com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:455)
at com.google.tracing.TraceContext.runInContext(TraceContext.java:695)
at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:333)
at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:325)
at com.google.tracing.TraceContext$TraceContextRunnable.run(TraceContext.java:453)
at java.lang.Thread.run(Thread.java:679)
Caused by: java.lang.ExceptionInInitializerError
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:283)
at java.sql.DriverManager.getConnection(DriverManager.java:620)
at java.sql.DriverManager.getConnection(DriverManager.java:200)
at com.dao.BulletinDAO.getConnection(BulletinDAO.java:231)
at com.dao.BulletinDAO.getApprovedBulletins(BulletinDAO.java:134)
at com.action.GetApprovedBulletins.execute(GetApprovedBulletins.java:45)
... 74 more
Caused by: java.security.AccessControlException: access denied (java.lang.RuntimePermission modifyThreadGroup)
at java.security.AccessControlContext.checkPermission(AccessControlContext.java:355)
at java.security.AccessController.checkPermission(AccessController.java:567)
at java.lang.SecurityManager.checkPermission(SecurityManager.java:549)
at java.lang.ThreadGroup.checkAccess(ThreadGroup.java:315)
at java.lang.Thread.init(Thread.java:353)
at java.lang.Thread.<init>(Thread.java:437)
at java.util.TimerThread.<init>(Timer.java:478)
at java.util.Timer.<init>(Timer.java:100)
at java.util.Timer.<init>(Timer.java:146)...(length 8258)
This is almost certainly because you are missing the jdbc driver jar for MySql. You can find it Here. Unzip it and add the jar to your classpath.
Update:
You can not use MySQL with GAE because sockets are not allowed. This will never work for you. They have alternative persistence mechanisms besides MySQL. See: Can I use a MySQL database with an App Engine application
Try this:
try
{ // Load driver class
Class.forName("com.mysql.jdbc.Driver");
}
catch (java.lang.ClassNotFoundException e) {
System.err.println("ClassNotFoundException: " +e);
}
Instead of:
try {
// Exception thrown in next line.
Class.forName(driver).newInstance();
conn = DriverManager.getConnection(url, userName, password);
} catch (Exception e) {
return null;
}