Java jar file won't recognize external libraries added from gradle

Question

Yo folks basically I'm using gradle in java project and can't export the libraries in jar file that I'm using. Tried a few solutions but nothing worked. Do you know what I'm missing in the gradle file or I need to specify some things when I'm exporting. I'm using Eclipse

Thanks, here is my gradle file

    enter code here
plugins {
    // Apply the java-library plugin to add support for Java Library
    id 'java-library'

}

repositories {
    // Use jcenter for resolving your dependencies.
    // You can declare any Maven/Ivy/file repository here.
    jcenter()
    mavenCentral()
}

dependencies {
    // This dependency is exported to consumers, that is to say found on their compile classpath.
    api 'org.apache.commons:commons-math3:3.6.1'

    // This dependency is used internally, and not exposed to consumers on their own compile classpath.
    implementation 'com.google.guava:guava:27.0.1-jre'

    // Use JUnit test framework
    testImplementation 'junit:junit:4.12'

    implementation "redis.clients:jedis:3.0.1"
    implementation  'org.pixsee.java-fcm:Java-fcm:1.0.0'  

    implementation 'com.google.firebase:firebase-admin:6.10.0'


    compile "org.slf4j:slf4j-api:1.6.1"

     implementation 'org.slf4j:slf4j-simple:1.7.25'
     implementation "com.google.maps:google-maps-services:0.9.4"
     implementation 'io.vertx:vertx-core:3.8.1'

}
sourceCompatibility = 1.8
version = '1.0'
jar {
    manifest {
        attributes 'Implementation-Title': 'GeofenceServer',
                   'Implementation-Version': version
    }
}
apply plugin: "eclipse"

in other words, we cannot know what is missing since you have not posted anything — user85421, Sep 13 '19 at 11:25
sorry just saw It ,basically now I reading I have to create a fat jar file . — , Sep 13 '19 at 12:11
try [this](https://www.mkyong.com/gradle/gradle-create-a-jar-file-with-dependencies/) — Sterconium, Sep 13 '19 at 15:46
what solutions did you try? there are a number of ways to build a "fat jar", that is, a jar containing your code + all dependencies. Have you tried > this? https://stackoverflow.com/questions/4871656/using-gradle-to-build-a-jar-with-dependencies — Daniele, Sep 14 '19 at 14:59

score 0 · Accepted Answer · answered Sep 20 '19 at 11:25

Finally solved it , the answer from Sterconium got me on the right track answer but the problem was when I try to create the fatJar it says cannot find the main class ,the reason was because my files are in src/test/java instead of src/main/java and somehow when I tried to run fatJar it compiled It but could not find still the dependencies, so I change the implementation to compile in build.gradle file and now it works .So here is my final build.gradle file how it looks like .

    /*
 * This file was generated by the Gradle 'init' task.
 *
 * This generated file contains a sample Java Library project to get you started.
 * For more details take a look at the Java Libraries chapter in the Gradle
 * User Manual available at https://docs.gradle.org/5.4/userguide/java_library_plugin.html
 */
plugins {
    // Apply the java-library plugin to add support for Java Library
    id 'java-library'
}
repositories {
    // Use jcenter for resolving your dependencies.
    // You can declare any Maven/Ivy/file repository here.
    jcenter()
    mavenCentral()
}


apply plugin: "java"
apply plugin: "eclipse"

version = '1.0'

//create a single Jar with all dependencies
task fatJar(type: Jar) {
    manifest {
        attributes 'Implementation-Title': 'Gradle Jar File Example', 
            'Implementation-Version': version,
            'Main-Class': 'Server.Test'
    }
    baseName = project.name + '-all'
    from { configurations.compile.collect { it.isDirectory() ? it : zipTree(it) } }
    with jar
}


dependencies {
    // This dependency is exported to consumers, that is to say found on their compile classpath.
    api 'org.apache.commons:commons-math3:3.6.1'


    // This dependency is used internally, and not exposed to consumers on their own compile classpath.
    implementation 'com.google.guava:guava:27.0.1-jre'

    // Use JUnit test framework
    testImplementation 'junit:junit:4.12'


    implementation "redis.clients:jedis:3.0.1"
    implementation 'com.google.firebase:firebase-admin:6.10.0'
    implementation 'org.slf4j:slf4j-simple:1.7.25'
    implementation 'com.google.maps:google-maps-services:0.10.0'
    compile 'io.vertx:vertx-core:3.8.1'
    implementation 'com.google.code.gson:gson:2.8.5'
}

Java jar file won't recognize external libraries added from gradle

1 Answers1