Jump to content
View in the app

A better way to browse. Learn more.
Forge Forums

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.
Search the Forums BEFORE making a new post.
Currently supported: All versions

[1.12.2] NoClassDefFound

Alastar
in Modder Support

Featured Replies

Posted

 I shaded apache-dbcp2 into my .jar, but when server reaches any usage of this library's classes - it throws NoClassDefFoundError: 

[20:02:37] [Server thread/INFO] [STDERR]: [java.lang.Throwable:printStackTrace:-1]: Caused by: java.lang.NoClassDefFoundError: org/apache/commons/dbcp2/BasicDataSource
[20:02:37] [Server thread/INFO] [STDERR]: [java.lang.Throwable:printStackTrace:-1]: 	at ru.alastar.minedonate.rtnl.ModDataBase.getDataBaseConnection(ModDataBase.java:38)
[20:02:37] [Server thread/INFO] [STDERR]: [java.lang.Throwable:printStackTrace:-1]: 	at ru.alastar.minedonate.rtnl.ModDataBase.initDataBase(ModDataBase.java:132)
[20:02:37] [Server thread/INFO] [STDERR]: [java.lang.Throwable:printStackTrace:-1]: 	... 43 more
[20:02:37] [Server thread/INFO] [STDERR]: [java.lang.Throwable:printStackTrace:-1]: Caused by: java.lang.ClassNotFoundException: org.apache.commons.dbcp2.BasicDataSource
[20:02:37] [Server thread/INFO] [STDERR]: [java.lang.Throwable:printStackTrace:-1]: 	at java.net.URLClassLoader.findClass(Unknown Source)
[20:02:37] [Server thread/INFO] [STDERR]: [java.lang.Throwable:printStackTrace:-1]: 	at java.lang.ClassLoader.loadClass(Unknown Source)
[20:02:37] [Server thread/INFO] [STDERR]: [java.lang.Throwable:printStackTrace:-1]: 	at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
[20:02:37] [Server thread/INFO] [STDERR]: [java.lang.Throwable:printStackTrace:-1]: 	at java.lang.ClassLoader.loadClass(Unknown Source)
[20:02:37] [Server thread/INFO] [STDERR]: [java.lang.Throwable:printStackTrace:-1]: 	at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:106)
[20:02:37] [Server thread/INFO] [STDERR]: [java.lang.Throwable:printStackTrace:-1]: 	at java.lang.ClassLoader.loadClass(Unknown Source)
[20:02:37] [Server thread/INFO] [STDERR]: [java.lang.Throwable:printStackTrace:-1]: 	at java.lang.ClassLoader.loadClass(Unknown Source)
[20:02:37] [Server thread/INFO] [STDERR]: [java.lang.Throwable:printStackTrace:-1]: 	... 45 more
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: java.lang.NullPointerException
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at ru.alastar.minedonate.rtnl.ModDataBase.getDataBaseConnection(ModDataBase.java:26)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at ru.alastar.minedonate.rtnl.ModDataBase.getNewStatement(ModDataBase.java:65)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at ru.alastar.minedonate.MineDonate.loadServerMerch(MineDonate.java:95)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at ru.alastar.minedonate.proxies.ServerProxy.preInit(ServerProxy.java:65)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at ru.alastar.minedonate.MineDonate.preInit(MineDonate.java:654)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at java.lang.reflect.Method.invoke(Unknown Source)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at net.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:627)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at java.lang.reflect.Method.invoke(Unknown Source)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at com.google.common.eventbus.EventBus.post(EventBus.java:217)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:218)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:196)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at java.lang.reflect.Method.invoke(Unknown Source)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at com.google.common.eventbus.EventBus.post(EventBus.java:217)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at net.minecraftforge.fml.common.LoadController.redirect$onPost$zza000(LoadController.java:560)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:135)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at net.minecraftforge.fml.common.Loader.preinitializeMods(Loader.java:627)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at net.minecraftforge.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:98)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at net.minecraftforge.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:332)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:125)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:486)
[20:02:37] [Server thread/INFO] [STDERR]: [ru.alastar.minedonate.MineDonate:loadServerMerch:118]: 	at java.lang.Thread.run(Unknown Source)

 On the 1.7.10 everything worked fine

Edited by Alastar

  • Quote
    • Author

    Posting my build.gradle that did the trick(Used ShadowJar due to inability to did it with Forge Gradle) seems like the only way to do it now :
      

    buildscript {
    
    repositories {
        jcenter()
        mavenCentral()
        maven {
            name = "forge"
            url = "http://files.minecraftforge.net/maven"
        }
        maven {
            name = "sonatype"
            url = "https://oss.sonatype.org/content/repositories/snapshots/"
        }
    }
    
    dependencies {
        classpath 'net.minecraftforge.gradle:ForgeGradle:2.3-SNAPSHOT'
        classpath 'com.github.jengelman.gradle.plugins:shadow:1.2.3'
    }
}
apply plugin: 'net.minecraftforge.gradle.forge'
apply plugin: 'java' // or 'groovy'. Must be explicitly applied
apply plugin: 'com.github.johnrengelman.shadow'

version = "0.7.1.26"
group = "minedonate"
archivesBaseName = "minedonate"

[compileJava, compileTestJava]*.options*.encoding = 'UTF-8'

sourceCompatibility = targetCompatibility = '1.8'
compileJava {
    sourceCompatibility = targetCompatibility = '1.8'
}

minecraft {
    version = "1.12.2-14.23.0.2491"
    runDir = "run"
    mappings = "snapshot_20170612"
    makeObfSourceJar = false
}

configurations {
    shadow
    compile.extendsFrom shadow
}

dependencies {
    shadow   'org.apache.commons:commons-dbcp2:2.1.1'
    shadow   'org.apache.commons:commons-pool2:2.4.2'
    shadow   'mysql:mysql-connector-java:8.0.11'
}
shadowJar {
    archiveName = tasks.jar.archiveName
    configurations = [project.configurations.shadow]
    relocate 'org.apache.commons', 'ru.alastar.org.shadowedlibs.org.apache.commons'
}

jar {
    configurations.shadow.each { dep ->
        from(project.zipTree(dep)){
            exclude 'META-INF', 'META-INF/**'
        }
    }
}
jar.dependsOn shadowJar
jar.enabled = false

processResources {
    inputs.property "version", project.version
    inputs.property "mcversion", project.minecraft.version

    from(sourceSets.main.resources.srcDirs) {
        include 'mcmod.info'
        expand 'version': project.version, 'mcversion': project.minecraft.version
    }

    from(sourceSets.main.resources.srcDirs) {
        exclude 'mcmod.info'
    }
}

     

    Edited by Alastar

  • Quote

    • Join the conversation

    You can post now and register later. If you have an account, sign in now to post with your account.
    Note: Your post will require moderator approval before it will be visible.

    Guest
    Unfortunately, your content contains terms that we do not allow. Please edit your content to remove the highlighted words below.
    Reply to this topic...
    https://forums.minecraftforge.net/topic/64895-1122-noclassdeffound/
    Go to topic listing

    Important Information

    By using this site, you agree to our Terms of Use.

    I accept

    Configure browser push notifications
    Chrome (Android)
    1. Tap the lock icon next to the address bar.
    2. Tap Permissions → Notifications.
    3. Adjust your preference.
    Chrome (Desktop)
    1. Click the padlock icon in the address bar.
    2. Select Site settings.
    3. Find Notifications and adjust your preference.