Java explorer don't show .java files

[Raidez]

In my folder, I have a subfolder containing my project (pom and java), maven correctly detects the project, however there is no java file in the java explorer.

File explorer and java explorer

Another working projetct

[jdneo]

Will the java project explorer show correct content if directly open that sub-folder in VS Code?

And btw, would you mind sharing your extension version please.

[Raidez]

It doesn't work when opening the subfolder. I should specify that I am connected to a WSL :

• WSL -> v0.81.8
• Extension Pack for Java -> v0.25.14
• Project Manager for Java -> v0.23.1

[jdneo]

Looks like due to some reason, the project is not imported as a Java project.

Does it work if you directly open it in windows instead of WSL?

If still not working, is it possible to share a sample project which can reproduce this issue?

[Raidez]

I found a strange point : demo.zip On this demo, all you have to do is comment on the maven-resources-plugin and click on "clean workspace" on the Java view and the java files magically disappear.

[jdneo]

Tried but working on MacOS. I'll find a Windows machine and try it in WSL later.

[jdneo]

Still cannot repro using WSL

Could you share the server logs? You can get it by command Java: Open Java Language Server log file: https://github.com/redhat-developer/vscode-java/wiki/Troubleshooting#get-the-java-language-servers-workspace-logs

[Raidez]

My logs : NOK.log OK.log

[jdneo]

sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target Looks like your WSL env has some issue to access your private Maven repo?

[Raidez]

This don't change the fact when I put maven-resources-plugin, I don't have problem. I work with IntelliJ too and without any more configuration, it works perfectly.

[jdneo]

AFAIK, IntelliJ has some extra work to auto configure the cert: https://www.jetbrains.com/help/idea/ssl-certificates.html

Hi @snjeza, do you know if there is any way to work around the issue sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target? Full log: https://github.com/microsoft/vscode-java-dependency/files/13216546/NOK.log

[snjeza]

@Raidez Could you run

$ mvn -version
$ mvn -U clean verify

and attach their output?

do you know if there is any way to work around the issue sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target? Full log: https://github.com/microsoft/vscode-java-dependency/files/13216546/NOK.log

You can try

$ echo -n | openssl s_client -connect my-enterprise-repo-maven:443 | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' > /tmp/mycert.crt
$ cp <YOUR_JAVA_HOME>/lib/security/cacerts ~/cacerts.backup # optional
$ keytool -import -trustcacerts -keystore <YOUR_JAVA_HOME>/lib/security/cacerts -storepass changeit -noprompt -alias mycert -file /tmp/mycert.crt

[Raidez]

> mvn -version
Apache Maven 3.8.6 (Red Hat 3.8.6-4)
Maven home: /usr/share/maven
Java version: 17.0.9, vendor: Eclipse Adoptium, runtime: /usr/lib/jvm/temurin-17-jdk
Default locale: en, platform encoding: UTF-8
OS name: "linux", version: "5.15.123.1-microsoft-standard-wsl2", arch: "amd64", family: "unix"

When it's OK/NOK (same result) :

> mvn -U clean verify
[INFO] Scanning for projects...
[INFO] 
[INFO] --------------------------< com.example:demo >--------------------------
[INFO] Building demo 1.0-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:3.1.0:clean (default-clean) @ demo ---
[INFO] Deleting /my-folder/demo/target
[INFO] 
[INFO] --- maven-resources-plugin:3.0.2:resources (default-resources) @ demo ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory /my-folder/demo/src/main/resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.8.0:compile (default-compile) @ demo ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to /my-folder/demo/target/classes
[INFO] 
[INFO] --- maven-resources-plugin:3.0.2:testResources (default-testResources) @ demo ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory /my-folder/demo/src/test/resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.8.0:testCompile (default-testCompile) @ demo ---
[INFO] Nothing to compile - all classes are up to date
[INFO] 
[INFO] --- maven-surefire-plugin:2.22.1:test (default-test) @ demo ---
[INFO] No tests to run.
[INFO] 
[INFO] --- maven-jar-plugin:3.0.2:jar (default-jar) @ demo ---
[INFO] Building jar: /my-folder/demo/target/demo-1.0-SNAPSHOT.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  0.992 s
[INFO] Finished at: 2023-11-02T08:45:03+01:00
[INFO] ------------------------------------------------------------------------

Openssl don't works :

> openssl s_client -connect my-enterprise-repo-maven
40BC37C6F67F0000:error:10080002:BIO routines:BIO_lookup_ex:system lib:crypto/bio/bio_addr.c:738:Servname not supported for ai_socktype
connect:errno=0

[snjeza]

@Raidez could you show your maven repository url? could you try

$ ping my-enterprise-repo-maven

[Raidez]

> ping my-enterprise-repo-maven
ping: my-enterprise-repo-maven: Name or service not known

[snjeza]

@Raidez could you show your maven repository url?

[Raidez]

I can't show my maven url, but I discovered another thing. Forget the maven-resources-plugin, when I open my project with JAVA_HOME set to jdk17, it works perfectly. When I switching to jdk8, I got an error (same as NOK.log). The github said java 11 is required. My mistake.

[jdneo]

@Raidez Is your problem resolved?

[Raidez]

YEs

[jdneo]

Ok. Anyway, good to know the problem is fixed. And thank you @snjeza for the help! ❤