Question

我使用Selenium HtmlUnitDriver在Netbeans中编写了一个小型Maven项目。当我从IDE启动它时，该项目正常工作。但是当我使用命令java -jar打开jar文件时，它会报告错误。

Exception in thread "main" java.lang.NoClassDefFoundError: org/openqa/selenium/htmlunit/HtmlUnitDriver
    at com.mycompany.myPackage.classNameUI.<init>(classNameUI.java:26)
    at com.mycompany.myPackage.mainClass.main(mainClass.java:20)
Caused by: java.lang.ClassNotFoundException: org.openqa.selenium.htmlunit.HtmlUnitDriver
    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)
    ... 2 more

manifest.mf得到了正确的Mainclass：path

版本：

Netbeans 8.2

Maven 4.0.0

Selenium 2.53.1

的pom.xml：

<?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>com.mycompany</groupId>
<artifactId>MyProject</artifactId>
<version>User</version>
<packaging>jar</packaging>
<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>
<dependencies>
    <dependency>
        <groupId>org.seleniumhq.selenium</groupId>
        <artifactId>selenium-java</artifactId>
        <version>2.53.1</version>
    </dependency>
    <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpclient</artifactId>
        <version>4.5.2</version>
    </dependency>
    <dependency>
        <groupId>net.sourceforge.htmlunit</groupId>
        <artifactId>htmlunit</artifactId>
        <version>2.25</version>
    </dependency>
</dependencies>
<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-jar-plugin</artifactId>
            <version>2.4</version>
            <configuration>
                <archive>
                    <manifest>
                        <addClasspath>true</addClasspath>
                        <mainClass>com.mycompany.mypackage.mainClass</mainClass>
                    </manifest>
                </archive>
            </configuration>
        </plugin>
    </plugins>
</build>

Answer 1

我认为可能是因为您没有在您的类路径中包含您的程序正在使用的依赖项，以解决此问题：

添加到＆＃34; maven-jar-plugin＆＃34;在<addClasspath>:下

<classpathPrefix>lib/</classpathPrefix>

然后将此插件添加到pom.xml中的build部分：

            <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}/lib</outputDirectory>
                            <overWriteReleases>false</overWriteReleases>
                            <overWriteSnapshots>false</overWriteSnapshots>
                            <overWriteIfNewer>true</overWriteIfNewer>
                        </configuration>
                    </execution>
                </executions>
            </plugin>

有关详细信息，请参阅文档：https://maven.apache.org/plugins/maven-dependency-plugin/usage.html

使用Selenium的Maven项目上的ClassNotFoundException

1 个答案: