클래스를 찾을 수 없음 Maven Jar의 예외

Question

나는 프로젝트에서 의존성을 관리하기 위해 maven을 사용한다. 이 의 pom.xml

<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"> 
    <modelVersion>4.0.0</modelVersion> 

    <groupId>com.prasanna</groupId> 
    <artifactId>fft-java</artifactId> 
    <version>1.0.0</version> 
    <packaging>jar</packaging> 

    <name>fft-java</name> 
    <url>http://maven.apache.org</url> 

    <properties> 
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 
    </properties> 

    <dependencies> 
     <dependency> 
      <groupId>junit</groupId> 
      <artifactId>junit</artifactId> 
      <version>4.11</version> 
     </dependency> 
     <dependency> 
      <groupId>com.github.wendykierp</groupId> 
      <artifactId>JTransforms</artifactId> 
      <version>3.0</version> 
     </dependency> 
    </dependencies> 
    <build> 
     <plugins> 
      <plugin> 
       <!-- Build an executable JAR --> 
       <groupId>org.apache.maven.plugins</groupId> 
       <artifactId>maven-jar-plugin</artifactId> 
       <version>2.4</version> 
       <configuration> 
        <archive> 
         <manifest> 
          <addClasspath>true</addClasspath> 
          <classpathPrefix>lib/</classpathPrefix> 
          <mainClass>com.prasanna.TestFFT</mainClass> 
         </manifest> 
        </archive> 
       </configuration> 
      </plugin> 
     </plugins> 
    </build> 
</project> 

내 응용 프로그램에서 하나 개의 자바 클래스가 내 pom.xml 파일입니다. 내 응용 프로그램에서 클래스를 실행하면 예상대로 실행됩니다. 나는 mvn package을하고 java -jar test-fft.jar과 같이 터미널에서 실행하려고하면 반면에, 나는 java.lang.ClassNotFoundException: org.jtransforms.fft.DoubleFFT_2D

을 얻을하지만이 DoubleFFT_2D 내가 추가 한 JTransforms 의존성의 일부입니다. 이 항아리는 어떻게 달릴까요?

Answer 1

maven-assembly 플러그인을 사용하여 종속성이있는 jar를 빌드하십시오.

<plugin> 
<artifactId>maven-assembly-plugin</artifactId> 
<executions> 
    <execution> 
    <phase>package</phase> 
    <goals> 
     <goal>single</goal> 
    </goals> 
    </execution> 
</executions> 
<configuration> 
    <descriptorRefs> 
    <descriptorRef>jar-with-dependencies</descriptorRef> 
    </descriptorRefs> 
</configuration> 

Answer 2

<build> 
 
\t <plugins> 
 
\t <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>Mydir/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> 
 
      <version>2.4</version> 
 
      <configuration> 
 
      <outputDirectory>MyDir</outputDirectory> 
 
       <archive> 
 
        <manifest> 
 
         <addClasspath>true</addClasspath> 
 
         <classpathPrefix>lib</classpathPrefix> 
 
         <mainClass>com.test.entryClassOfJarHavingMainMethod</mainClass> 
 
        </manifest> 
 
       </archive> 
 
      </configuration> 
 
     </plugin> 
 
\t </plugins> 
 
\t 
 
\t 
 
</build>