Unable to Debug/Attch Java Maven on Vscode

[DebashishSaha]

Unable to debug Java Maven Project.

Environment

• Operating System: Win10 Enterprise . Build No : 19045.3208 version : 22H2
• JDK version: 1.8.0_281
• Visual Studio Code version: 1.81.1 User Setup
• Java extension version: 0.25.13
• Java Debugger extension version: v0.54.0

Steps To Reproduce

1. Vs code setting.json

{
    
    "update.mode": "none",
    "workbench.startupEditor": "none",
    "telemetry.telemetryLevel": "off",
    "java.autobuild.enabled": false,
    "java.configuration.runtimes": [
        {
            "name": "JavaSE-1.8",
            "default": true,
            "path": "C:\\Program Files\\Java\\jdk1.8.0_281"
        }
    ]
}

3. java debug log file

!ENTRY java-debug 1 0 2023-08-29 22:05:54.430 !MESSAGE Trying to attach to remote debuggee VM localhost:61739 .

!ENTRY java-debug 4 0 2023-08-29 22:05:54.468 !MESSAGE [error response][attach]: Failed to attach to remote debuggee VM. Reason: java.net.ConnectException: Connection refused: connect !STACK 0 com.microsoft.java.debug.core.DebugException: Failed to attach to remote debuggee VM. Reason: java.net.ConnectException: Connection refused: connect at com.microsoft.java.debug.core.adapter.AdapterUtils.createCompletionException(AdapterUtils.java:266) at com.microsoft.java.debug.core.adapter.handler.AttachRequestHandler.handle(AttachRequestHandler.java:81) at com.microsoft.java.debug.core.adapter.DebugAdapter.lambda$dispatchRequest$0(DebugAdapter.java:94) at java.base/java.util.concurrent.CompletableFuture.uniComposeStage(Unknown Source) at java.base/java.util.concurrent.CompletableFuture.thenCompose(Unknown Source) at com.microsoft.java.debug.core.adapter.DebugAdapter.dispatchRequest(DebugAdapter.java:93) at com.microsoft.java.debug.core.adapter.ProtocolServer.dispatchRequest(ProtocolServer.java:118) at com.microsoft.java.debug.core.protocol.AbstractProtocolServer.lambda$new$0(AbstractProtocolServer.java:81) at io.reactivex.internal.observers.LambdaObserver.onNext(LambdaObserver.java:63) at io.reactivex.internal.operators.observable.ObservableObserveOn$ObserveOnObserver.drainNormal(ObservableObserveOn.java:201) at io.reactivex.internal.operators.observable.ObservableObserveOn$ObserveOnObserver.run(ObservableObserveOn.java:255) at io.reactivex.internal.schedulers.ScheduledRunnable.run(ScheduledRunnable.java:66) at io.reactivex.internal.schedulers.ScheduledRunnable.call(ScheduledRunnable.java:57) at java.base/java.util.concurrent.FutureTask.run(Unknown Source) at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.base/java.lang.Thread.run(Unknown Source) Caused by: java.net.ConnectException: Connection refused: connect at java.base/sun.nio.ch.Net.connect0(Native Method) at java.base/sun.nio.ch.Net.connect(Unknown Source) at java.base/sun.nio.ch.Net.connect(Unknown Source) at java.base/sun.nio.ch.NioSocketImpl.connect(Unknown Source) at java.base/java.net.SocksSocketImpl.connect(Unknown Source) at java.base/java.net.Socket.connect(Unknown Source) at java.base/java.net.Socket.connect(Unknown Source) at java.base/java.net.Socket.(Unknown Source) at java.base/java.net.Socket.(Unknown Source) at org.eclipse.jdi.internal.connect.SocketTransportService$2.run(SocketTransportService.java:147) ... 1 more

Launch setting file

{
				"type": "java",
				"name": "Attach Service",
				"request": "attach",
				"processId" : "${command:PickJavaProcess}",
				"timeout": 300000

			}

Current Result

When the type is launch in Launch setting , the debugger starts but after a certain time period the debugger stops , but application is in running mode in the backend . on Debugger console I can see "ERROR: transport error 202: recv error: Connection reset by peer". So I tried to do attach java process , Vscode is not able to attach , it shows the java process on popup , when I click on it , it throws error dialog saying "Failed to attach remote debuggee VM. Reason java.net.connectException:connection refused connect"

Expected Result

debugger should work

Additional Informations

Back 5/6months ago , I was able to do the debugging correct with the same project on vscode , then I recently updated it to debug the same project and its throwing exception now.

[testforstephen]

Based on the information provided, I didn't get enough information to analyze the issue. Have you tried using other IDEs to see if the attach debugging works for them?

[DebashishSaha]

Yes . today I installed IntelliJ and its working fine !

[cnfatal]

Same issue on Windows ,it show "unknow source" when step into dependency from maven.