mavenパッケージexecutable-jarは "NoClassDefFoundError"を実行できません

Question

maven maven packageコマンドを使用してプロジェクトをコンパイルし、実行可能なjarファイルを正常にエクスポートしました。

Manifest-Version: 1.0 
Archiver-Version: Plexus Archiver 
Built-By: Administrator 
Class-Path: lib/aws-java-sdk-core-1.10.68.jar lib/commons-logging-1.1. 
3.jar lib/httpclient-4.3.6.jar lib/httpcore-4.3.3.jar lib/commons-cod 
ec-1.6.jar lib/jackson-databind-2.5.3.jar lib/jackson-annotations-2.5 
.0.jar lib/jackson-core-2.5.3.jar lib/jackson-dataformat-cbor-2.5.3.j 
ar lib/joda-time-2.8.1.jar lib/aws-java-sdk-datapipeline-1.10.68.jar 
lib/aws-java-sdk-dynamodb-1.10.68.jar lib/aws-java-sdk-s3-1.10.68.jar 
    lib/aws-java-sdk-kms-1.10.68.jar lib/gcm-server-1.0.2.jar lib/json-s 
imple-1.1.jar lib/slf4j-api-1.7.7.jar lib/logback-classic-1.1.2.jar l 
ib/logback-core-1.1.2.jar lib/jcl-over-slf4j-1.7.7.jar lib/log4j-api- 
2.5.jar lib/log4j-core-2.5.jar lib/mybatis-3.3.1.jar lib/netty-all-4. 
0.36.Final.jar lib/lombok-1.16.8.jar lib/gson-2.6.2.jar lib/jtds-1.3. 
1.jar 
Created-By: Apache Maven 3.3.9 
Build-Jdk: 1.8.0_65 
Main-Class: kr.stocktalk.chat.ChatServer 

しかし、私はこれを実行すると、ちょうど出力私menifestでNoclassDefFoundError

$ java -server -Xms512m -Xmx2048m -Dlogback.configurationFile=`pwd`/resources/logback.xml -jar stocktalk-chat-0.3.1.jar 
Error: A JNI error has occurred, please check your installation and try again 
Exception in thread "main" java.lang.NoClassDefFoundError: io/netty/channel/EventLoopGroup 
     at java.lang.Class.getDeclaredMethods0(Native Method) 
     at java.lang.Class.privateGetDeclaredMethods(Unknown Source) 
     at java.lang.Class.privateGetMethodRecursive(Unknown Source) 
     at java.lang.Class.getMethod0(Unknown Source) 
     at java.lang.Class.getMethod(Unknown Source) 
     at sun.launcher.LauncherHelper.validateMainClass(Unknown Source) 
     at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source) 
Caused by: java.lang.ClassNotFoundException: io.netty.channel.EventLoopGroup 
     at java.net.URLClassLoader.findClass(Unknown Source) 
     at java.lang.ClassLoader.loadClass(Unknown Source) 
     at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) 
     at java.lang.ClassLoader.loadClass(Unknown Source) 
     ... 7 more 

エラーは、クラスパスにあるすべての依存関係を追加しました。

私のpom.xmlをチェックしてください。何が問題ですか？

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 
    <properties> 
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> 
    </properties> 
    <modelVersion>4.0.0</modelVersion> 
    <groupId>kr.stocktalk</groupId> 
    <artifactId>stocktalk-chat</artifactId> 
    <version>0.3.1</version> 
    <build> 
     <plugins> 
      <plugin> 
       <groupId>org.codehaus.mojo</groupId> 
       <artifactId>exec-maven-plugin</artifactId> 
       <version>1.2.1</version> 
       <executions> 
        <execution> 
         <goals> 
          <goal>java</goal> 
         </goals> 
        </execution> 
       </executions> 
       <configuration> 
        <mainClass>kr.stocktalk.chat.ChatServer</mainClass> 
        <arguments> 
         <argument>-server</argument> 
         <argument>-Xms512m</argument> 
         <argument>-Xmx2048m</argument> 
         <argument>-Dlogback.configurationFile=classpath:resources/logback.xml</argument> 
        </arguments> 
       </configuration> 
      </plugin> 
      <plugin> 
       <groupId>org.apache.maven.plugins</groupId> 
       <artifactId>maven-compiler-plugin</artifactId> 
       <version>2.5.1</version> 
       <configuration> 
        <source>1.8</source> 
        <target>1.8</target> 
        <!-- <compilerArgument>-Xlint:all</compilerArgument> --> 
        <showWarnings>true</showWarnings> 
        <showDeprecation>true</showDeprecation> 
        <encoding>UTF-8</encoding> 
       </configuration> 
      </plugin> 
      <!-- <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-dependency-plugin</artifactId> 
       <version>2.3</version> <executions> <execution> <id>copy-dependencies</id> 
       <phase>package</phase> <goals> <goal>copy-dependencies</goal> </goals> </execution> 
       </executions> <configuration> eclipse 에서는 target 밑의 lib 에 생성 됨 <outputDirectory>lib</outputDirectory> 
       <overWriteIfNewer>true</overWriteIfNewer> </configuration> </plugin> --> 
      <plugin> 
       <groupId>org.apache.maven.plugins</groupId> 
       <artifactId>maven-dependency-plugin</artifactId> 
       <executions> 
        <execution> 
         <id>copy-dependencies</id> 
         <phase>prepare-package</phase> 
         <goals> 
          <goal>copy-dependencies</goal> 
         </goals> 
         <configuration> 
          <outputDirectory>${project.build.directory}/classes/lib</outputDirectory> 
          <overWriteReleases>false</overWriteReleases> 
          <overWriteSnapshots>false</overWriteSnapshots> 
          <overWriteIfNewer>true</overWriteIfNewer> 
         </configuration> 
        </execution> 
       </executions> 
      </plugin> 
      <plugin> 
       <groupId>org.apache.maven.plugins</groupId> 
       <artifactId>maven-jar-plugin</artifactId> 
       <configuration> 
        <archive> 
         <manifest> 
          <addClasspath>true</addClasspath> 
          <mainClass>kr.stocktalk.chat.ChatServer</mainClass> 
          <classpathPrefix>lib</classpathPrefix> 
         </manifest> 
         <!-- <manifestEntries> 
          <Class-Path>lib/</Class-Path> 
         </manifestEntries> --> 
        </archive> 
       </configuration> 
      </plugin> 
     </plugins> 
     <resources> 
      <resource> 
       <directory>src/main/resources</directory> 
       <targetPath>resources</targetPath> 
      </resource> 
     </resources> 
    </build> 
    <dependencies> 
     <dependency> 
      <groupId>com.amazonaws</groupId> 
      <artifactId>aws-java-sdk-core</artifactId> 
      <version>1.10.68</version> 
     </dependency> 
     <dependency> 
      <groupId>com.amazonaws</groupId> 
      <artifactId>aws-java-sdk-datapipeline</artifactId> 
      <version>1.10.68</version> 
     </dependency> 
     <dependency> 
      <groupId>com.amazonaws</groupId> 
      <artifactId>aws-java-sdk-dynamodb</artifactId> 
      <version>1.10.68</version> 
     </dependency> 
     <dependency> 
      <groupId>com.ganyo</groupId> 
      <artifactId>gcm-server</artifactId> 
      <version>1.0.2</version> 
     </dependency> 
     <dependency> 
      <groupId>org.slf4j</groupId> 
      <artifactId>slf4j-api</artifactId> 
      <version>1.7.7</version> 
     </dependency> 
     <dependency> 
      <groupId>ch.qos.logback</groupId> 
      <artifactId>logback-classic</artifactId> 
      <version>1.1.2</version> 
      <exclusions> 
       <exclusion> 
        <groupId>org.slf4j</groupId> 
        <artifactId>slf4j-api</artifactId> 
       </exclusion> 
      </exclusions> 
     </dependency> 
     <dependency> 
      <groupId>org.slf4j</groupId> 
      <artifactId>jcl-over-slf4j</artifactId> 
      <version>1.7.7</version> 
     </dependency> 
     <dependency> 
      <groupId>org.apache.logging.log4j</groupId> 
      <artifactId>log4j-api</artifactId> 
      <version>2.5</version> 
     </dependency> 
     <dependency> 
      <groupId>org.apache.logging.log4j</groupId> 
      <artifactId>log4j-core</artifactId> 
      <version>2.5</version> 
     </dependency> 
     <dependency> 
      <groupId>org.mybatis</groupId> 
      <artifactId>mybatis</artifactId> 
      <version>3.3.1</version> 
     </dependency> 
     <dependency> 
      <groupId>io.netty</groupId> 
      <artifactId>netty-all</artifactId> 
      <version>4.0.36.Final</version> 
     </dependency> 
     <dependency> 
      <groupId>org.projectlombok</groupId> 
      <artifactId>lombok</artifactId> 
      <version>1.16.8</version> 
     </dependency> 
     <dependency> 
      <groupId>com.google.code.gson</groupId> 
      <artifactId>gson</artifactId> 
      <version>2.6.2</version> 
     </dependency> 
     <dependency> 
      <groupId>net.sourceforge.jtds</groupId> 
      <artifactId>jtds</artifactId> 
      <version>1.3.1</version> 
     </dependency> 
    </dependencies> 
</project> 

Answer 1

私はMavenの上の専門家ではないんだけど、私はあなたが<classpathPrefix>と同じパスに<outputdirectory>値を設定する必要があると思います。

このように変更することができます。

<plugin> 
      <groupId>org.apache.maven.plugins</groupId> 
      <artifactId>maven-jar-plugin</artifactId> 
      <configuration> 
       <archive> 
        <manifest> 
         <addClasspath>true</addClasspath> 
         <mainClass>kr.stocktalk.chat.ChatServer</mainClass> 
         <classpathPrefix>classes/lib</classpathPrefix> 
        </manifest> 
        <!-- <manifestEntries> 
         <Class-Path>lib/</Class-Path> 
        </manifestEntries> --> 
       </archive> 
      </configuration> 
     </plugin> 

<classpathPrefix>classes/lib</classpathPrefix>

は、その後、あなたのMANIFIESTファイルのクラスパスは、次のようになり、この部分を確認してください。

Class-Path: classes/lib/netty-all-4.0.36.Final.jar