Question 161901 in Visual Studio Code Question posted in
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? How to set Java library loading precedence in VSCODE?

In a Java project running in VSCODE, when executing a certain class, there is a conflict between the rt.jar library (from the JDK itself); and the referenced library jaxb-api-osgi.jar. Specifically, it loads the javax.xml.bind.JAXBContext class from the rt.jar; instead of the one included in jaxb-api-osgi.jar.

That is, I would like the referenced library jaxb-api-osgi.jar to have precedence over the rt.jar

This configuration in settings.json doesn`t helps:

{
    "java.project.referencedLibraries": [
        "lib/**/*.jar",
        "c:\PROYECTOS\Librerias\glassfish4\jaxb-api-osgi.jar"
    ],
    "java.jdt.ls.java.home": "C:\Instalados\Java\jdk8u192-b12"
}
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2

Answers


  1. Chosen as BEST ANSWER
    0

    The contribution is very interesting. I have learned a lot from it.

    But, it hasn't worked for me.

    However, I put the details of the changes here because I'm sure it will help someone.

    I finally got everything working for me from a clean workspace using Maven projects.

    (I give the answer as good because of the detail of it, and because surely I was missing something to do correctly).

    settings.json:

    {
    "java.project.sourcePaths": ["src"],
    "java.project.outputPath": "bin",
    "java.project.referencedLibraries": {
        "include": [
            "lib/**/*.jar",
            "C:\PROYECTOS\Librerias\glassfish4\jaxb-api-osgi.jar",
        ],
        "exclude": [
            "C:\Instalados\Java\jdk8u192-b12\jre\librt.jar"
        ]
    }
}

    launch.json:

    {
    "version": "0.2.0",
    "configurations": [
        {
            "type": "java",
            "name": "Current File",
            "request": "launch",
            "mainClass": "${file}"
        },
        {
            "type": "java",
            "name": "Main",
            "request": "launch",
            "mainClass": "tirea.sfe.facturae.Main",
            "projectName": "SFEAAPP_bcc312b8",
            "vmArgs": "-Xbootclasspath/p:${workspaceFolder}/facturae/lib/jaxb-api-osgi.jar"
        }
    ]
}

  2. 0

    • Add exclude to exclude rt.jar library under java.project.referencedLibraries configuration.

      Example settings.json

      "java.project.referencedLibraries": {
    "include": [
        "library/**/*.jar",
        "/home/username/lib/foo.jar"
    ],
    "exclude": [
        "library/sources/**"
    ]
}

    • Add the following configuration to vmArgs in launch.json to add the jaxb-api-osgi.jar library to the boot classpath of the JVM with a higher priority than the default boot classpath (which includes rt.jar)

      // Modify the path to your actual jaxb-api-osgi.jar path
"-Xbootclasspath/p:${workspaceFolder}/lib/jaxb-api-osgi.jar"

      Note: The launch.json file will only be referenced by using Starting Debugging or Run Without Debugging or executing the file in the Run and Debugging panel.

      enter image description here

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