[英]Errors trying to run a maven project from the Command Line
我真的很想讓我的Maven項目在命令行中運行。 它可以在eclipse中運行我希望的運行方式,但是在終端中使用mvn package命令可以運行我編寫的單元測試,但不能運行我希望它運行的實際主要源代碼應用程序。
java -cp target/TestKata-0.0.1-SNAPSHOT.jar com.techelevator.Main
返回此錯誤:
Exception in thread "main" java.lang.NoClassDefFoundError: okhttp3/OkHttpClient
at com.techelevator.Main.<clinit>(Main.java:12)
Caused by: java.lang.ClassNotFoundException: okhttp3.OkHttpClient
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 1 more
我假設我收到此錯誤,因為SNAPSHOT.jar文件中不包含依賴項,並且在到達需要依賴項的第一行后它失敗了? 非常感謝您的幫助,對於這些東西我還是很陌生,因此如果我做的真的很愚蠢,我深表歉意。
編輯:這是我的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.techelevator</groupId>
<artifactId>TestKata</artifactId>
<version>0.0.1-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.8.0</version>
</dependency>
<dependency>
<groupId>org.seleniumhq.selenium</groupId>
<artifactId>selenium</artifactId>
<version>2.0rc2</version>
<type>pom</type>
</dependency>
<dependency>
<groupId>org.seleniumhq.selenium</groupId>
<artifactId>selenium-chrome-driver</artifactId>
<version>3.3.1</version>
</dependency>
<dependency>
<groupId>com.squareup.okhttp3</groupId>
<artifactId>okhttp</artifactId>
<version>3.6.0</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.5.3</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.codehouse.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.4.0</version>
<configuration>
<mainClass>com.techelevator.Main</mainClass>
</configuration>
</plugin>
</plugins>
</build>
</project>
您必須通過maven-assemble-plugin將依賴項打包到jar中。在maven中找到jar-with-dependnecies
描述符
<build>
<plugins>
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
</plugin>
</plugins>
</build>
您可以在運行mvn package
命令時添加執行,這將輸出一個jar文件名,例如*-with-jar-dependencies.jar
,然后通過java
運行該jar文件,例如: java -cp target/TestKata-0.0.1-SNAPSHOT-with-jar-dependencies.jar com.techelevator.Main
<build>
<plugins>
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>assembly</goal>
</goals>
</execution>
</executions>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
</plugin>
</plugins>
</build>
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