Java ClassNotFound异常,Maven依赖项作为JAR
我似乎无法解决这个问题。在IntelliJ中使用Maven依赖项运行com.benmyers.Main
可以很好地工作,并且我没有收到任何错误。当我使用Maven窗口中的安装工具在target
目录中创建一个可执行JAR文件时,我在尝试运行时收到以下错误
java -jar "C:\Users\...\target\AncientGreekTranslator-1.0-SNAPSHOT.jar"
在命令提示符中:
Exception in thread "main" java.lang.NoClassDefFoundError: com/formdev/flatlaf/FlatDarculaLaf
at com.benmyers.Main.main(Main.java:23)
Caused by: java.lang.ClassNotFoundException: com.formdev.flatlaf.FlatDarculaLaf
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:606)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:168)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
... 1 more
我认为pom.xml
中的Maven插件存在一个问题:
<?xml version="1.0" encoding="UTF-8"?>
<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>benlmyers.ancientGreekTranslator</groupId>
<artifactId>AncientGreekTranslator</artifactId>
<version>1.0-SNAPSHOT</version>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<configuration>
<archive>
<manifestFile>src/main/resources/META-INF/MANIFEST.MF</manifestFile>
</archive>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>com.formdev</groupId>
<artifactId>flatlaf</artifactId>
<version>0.43</version>
<scope>compile</scope>
</dependency>
</dependencies>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
</project>
我尝试了以下方法:
将
<scope>provided</scope>
添加到pom.xml
(来自this answer)中的依赖项中,这在命令提示符下运行JAR时不会导致可见的更改,以及使用
<artifactId>maven-plugins</artifactId>
代替<artifactId>maven-jar-plugin</artifactId>
和其他artifactId
基本上,我尝试了this question和this other question的答案,但没有成功
我收到一条评论,要求我的Main.java
:
public class Main {
private static GreekDictionaryInterpreter dictionaryInterpreter;
private static Translator translator;
private static MainForm mainForm;
public static void main(String[] args) {
dictionaryInterpreter = new GreekDictionaryInterpreter(new ArrayList<Flag>());
translator = new GreekTranslator(dictionaryInterpreter.getDictionary(), new ArrayList<Flag>());
FlatDarculaLaf.install(); // <- Line that causes exception
//LookAndFeelManager.setLookAndFeel();
MainForm.main(dictionaryInterpreter, translator);
}
}
对于这个问题还有其他答案,我已经搜索了好几个,但没有一个在我的案例中被证明是成功的。任何帮助都将不胜感激
# 1 楼答案
在IDEA中,您应该将依赖项添加到项目工件中 文件->;项目结构->;人工制品 添加要输出布局的人,然后打包