CODEWITHSUNDEEP
javamavenjarjnlp
Franco Pan
Franco Pan

Reputation: 138

JNLP can't find main class built with Maven

I'm trying to convert an applet to a regular java application, using JNLP to run with. When running directly it works. But if I run via JNLP I get the stack trace below.

at com.sun.javaws.LaunchDownload.getMainClassName(Unknown Source)
    at com.sun.javaws.Launcher.doLaunchApp(Unknown Source)
    at com.sun.javaws.Launcher.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)


Main Java Class (App.java)

public static void main(String[] args) throws Exception {
    String porta = args[0];
    String dados = args[1];
    String etiquetaBytes = args[2];
    DadosEtiqueta[] dadosEtiqueta = getJsonFormString(dados, DadosEtiqueta[].class);
    ...
}


JNLP file (config.jnlp) This is where the jar execution is configured

<?xml version="1.0" encoding="UTF-8"?>
<jnlp spec="1.0+" codebase="http://172.16.3.5:8080/vendor" href="jnlp/config.jnlp">
    <information>
        <title>App Title</title>
        <vendor>Vendor Name</vendor>
        <offline-allowed/>
    </information>
    <resources>
        <j2se version="1.7+"/>
        <jar href="dir1/dir2/dir3/app-title.jar" main="true" />
    </resources>
    <application-desc/>
</jnlp>


Maven Jar Plugin (pom.xml) This plugin is setting the main class.

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-jar-plugin</artifactId>
    <configuration>
        <archive>
            <manifest>
                <mainClass>myPackage.App</mainClass>
            </manifest>
        </archive>
    </configuration>
</plugin>

Upvotes: 0

Views: 721

Answers (1)

asbachb
asbachb

Reputation: 573

I think your JNLP is not valid.

(see https://docs.oracle.com/javase/tutorial/deployment/deploymentInDepth/jnlpFileSyntax.html):

Note: A JNLP file must contain one of the following: application-desc, applet-desc, component-desc, or installer-desc.

And main-class should be required for application-desc.

Try to add

<application-desc main-class="myPackage.App" />

There might be a need to add name, width, height too but the description is not very accurate on that.

Upvotes: 2

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