Dependency chaos with Apache POI

[Nutellaeis]

I am currently trying to use Apache POI, Java Fx and JAXB in the same Project. I tried it step by step, and it seems to break as soon as I add POI.
The Gradlefile currently looks like this.

plugins {
  id 'eclipse'
  id 'application'
  id 'org.openjfx.javafxplugin' version '0.0.7'
  id 'org.beryx.jlink' version '2.12.0'
  id 'org.openrepose.gradle.plugins.jaxb' version '2.5.0'
}

repositories {
    mavenCentral()
}

dependencies {
    implementation 'javax.xml.bind:jaxb-api:2.3.1'
    jaxb 'org.glassfish.jaxb:jaxb-xjc:2.3.1'
    implementation 'org.glassfish.jaxb:jaxb-runtime:2.3.1'
    implementation 'org.apache.poi:poi-ooxml:4.1.0'
    implementation 'net.harawata:appdirs:1.0.3'
}

sourceCompatibility = 1.12
targetCompatibility = 1.12

mainClassName = "$moduleName/greatapp.Mainclass"

jaxb {
  xsdDir = "src/main/resources/xml"
}

javafx {
    version = "12"
    modules = [ 'javafx.controls', 'javafx.fxml' ]
}

jlink {
    forceMerge 'jaxb'
    imageZip = file("$buildDir/Great App.zip")
    options = ['--bind-services', '--strip-debug', '--compress', '2', '--no-header-files', '--no-man-pages']
    launcher {
        name = 'Great App'
    }
}

eclipse {
    classpath {
        containers 'org.eclipse.buildship.core.gradleclasspathcontainer'
        file {
            whenMerged {
                entries.findAll { it.properties.kind.equals('lib') && !it.properties.path.contains("junit") }.each {
                    it.entryAttributes['module'] = 'true'
                }
                entries.findAll { it.properties.path.startsWith('org.eclipse.jdt.launching.JRE_CONTAINER') }.each {
                    it.entryAttributes['module'] = 'true'
                }
                entries.find { it.path == 'src/main/java' }.output = 'bin/main'
                entries.forEach { entry ->
					def entryIn = { it.find { file(entry.path).equals(it) } }
					if (entry.kind == 'lib') {
						entry.entryAttributes['test'] =
							entryIn(configurations.testRuntimeClasspath) &&
							!entryIn(configurations.runtimeClasspath)
					}
	            }
            }
        }
    }
}

If I do not use forceMerge 'jaxb' I get a error: module not found: java.xml.bind (Even though I actually have a requires java.xml.bind; in my module-info.java.

If I do use it I get a:

Cannot derive uses clause from service loader invocation in: javax/xml/bind/ServiceLoaderUtil.firstByServiceLoader().
Cannot derive uses clause from service loader invocation in: org/apache/commons/compress/utils/ServiceLoaderIterator.<init>().
error: module not found: java.activation

But if I add implementation 'javax.activation:activation:1.1.1' to the dependencies I get

error: the unnamed module reads package javax.activation from both activation and java.activation
error: module poi reads package javax.activation from both activation and java.activation
error: module activation reads package javax.activation from both activation and java.activation
error: module javafx.controlsEmpty reads package javax.activation from both activation and java.activation
error: module javafx.graphicsEmpty reads package javax.activation from both activation and java.activation
error: module javafx.baseEmpty reads package javax.activation from both activation and java.activation
error: module poi.ooxml.schemas reads package javax.activation from both activation and java.activation
error: module org.apache.commons.compress reads package javax.activation from both activation and java.activation
error: module curvesapi reads package javax.activation from both activation and java.activation
error: module slf4j.api reads package javax.activation from both activation and java.activation
error: module jna.platform reads package javax.activation from both activation and java.activation
error: module org.apache.commons.codec reads package javax.activation from both activation and java.activation
error: module org.apache.commons.collections4 reads package javax.activation from both activation and java.activation
error: module commons.math3 reads package javax.activation from both activation and java.activation
error: module xmlbeans reads package javax.activation from both activation and java.activation
error: module jna reads package javax.activation from both activation and java.activation
error: module poi.ooxml reads package javax.activation from both activation and java.activation
error: module net.harawata.appdirs reads package javax.activation from both activation and java.activation
error: module java.activation reads package javax.activation from both activation and java.activation
error: module java.xml.bind reads package javax.activation from both java.activation and activation

Is it possible to get this to work?

[siordache]

You probably don't need the javax.activation:activation:1.1.1. Instead, try this:

Step 1

Put this in your jlink block:

    forceMerge 'jaxb', 'istack', 'stax'

This should get rid of the module not found: java.activation error.

Step 2

You will probably get errors such as:

the service implementation type must be a subtype of the service interface type, or have a public static no-args method named "provider" returning the service implementation

or

the service implementation does not have a default constructor

Execute:

./gradlew suggestMergedModuleInfo

It will print something like this:

    mergedModule {
        requires 'java.xml.crypto';
        requires 'java.logging';
        requires 'java.xml';
        requires 'com.sun.xml.txw2';
        requires 'java.desktop';
        requires 'java.datatransfer';
        requires 'java.compiler';
        requires 'java.security.jgss';
        requires 'jdk.javadoc';
        requires 'com.sun.xml.fastinfoset';
        provides 'javax.xml.bind.JAXBContext' with 'com.sun.xml.bind.v2.ContextFactory';
        provides 'org.apache.xmlbeans.impl.store.QueryDelegate.QueryInterface' with 'org.apache.xmlbeans.impl.xquery.saxon.XBeansXQuery';
        provides 'org.apache.xmlbeans.impl.store.PathDelegate.SelectPathInterface' with 'org.apache.xmlbeans.impl.xpath.saxon.XBeansXPath';
    }

Remove the lines contaning provides clauses and put the resulting mergedModule configuration in your jlink block.

Execute ./gradlew jlink.

Step 3

If you still get errors, you may need to do additional adjustments to the mergedModule configuration, for example you may need to add some uses or provides clauses.

[Nutellaeis]

It works! Thank you. I could never have figured that out myself.

[siordache]

Great! Time to treat yourself with a Nutella Eis 😄