我有一个本地jar,需要将其添加为对我的maven项目的依赖,以包含在该项目的已发布jar中。
将其放置在项目中的“ my_project / lib / external1.jar”中,首先,我将其添加到依赖项中,如下所示:
<dependency>
<groupId>installExternalJars11</groupId>
<artifactId>externalJar11</artifactId>
<version>3.1.14</version>
<systemPath>${project.basedir}//lib/external1.jar</systemPath>
<scope>system</scope>
</dependency>
它已成功编译,但jar内容未包含在生成的项目jar中,因此,尽管我正在使用以下将打包所有内容的插件,但当我使用项目jar时,这些类的结果为NoClassDefFoundError
输出jar中的依赖项
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<executions>
<execution>
<id>make-assembly</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
</plugin>
我发现了几篇文章,建议使用maven install插件安装它,然后将其添加为依赖项,因此我遵循以下方法:
<project
xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com</groupId>
<artifactId>waheed</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>waheed</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<version.maven-install-plugin>2.5.2</version.maven-install-plugin>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.3</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<executions>
<execution>
<id>make-assembly</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-install-plugin</artifactId>
<version>${version.maven-install-plugin}</version>
<configuration>
<repositoryLayout>default</repositoryLayout>
<groupId>installExternalJars</groupId>
<artifactId>externalJar1</artifactId>
<version>3.1.14</version>
<file>${project.basedir}/lib/external1.jar</file>
<packaging>jar</packaging>
<generatePom>true</generatePom>
</configuration>
<executions>
<execution>
<id>install-ibm-foundation</id>
<phase>validates</phase>
<goals>
<goal>install-file</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>installExternalJars11</groupId>
<artifactId>externalJar11</artifactId>
<version>3.1.14</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>
在Eclipse中,我将依赖项突出显示,并显示以下错误:
Missing artifact installExternalJars11:externalJar11:jar:3.1.14
,当我运行maven build(从eclipse:右键单击pom.xml>作为> maven build运行)时,出现以下错误(显然,maven在我的nexus存储库中查找jar,尽管它在本地被称为本地文件。安装部分):
Failure to find installExternalJars11:externalJar11:jar:3.1.14
in http://ur_to_nexus/nexus/content/repositories/central/ was cached in
the local repository, resolution will not be reattempted until the
update interval of ubknexus has elapsed or updates are forced
尝试了https://stackoverflow.com/a/6112344/458999此处提出的修复程序,但没有用
P.S:当我将Jars添加到eclipse的构建路径(Java构建路径>库>添加Jars)并从eclipse运行项目(或从eclipse导出并运行导出的jar)时,它就起作用了
答案 0 :(得分:0)
system
范围巧妙地使Maven表现出与众不同的特性。
将工件安装在本地Maven存储库服务器(Nexus或Artifactory)中,或在Maven Central上标识等效的工件。如果是商业软件,请要求您的供应商访问其存储库。
如果无法执行此操作,则可以在内部安装作为构建的一部分。在Multiple install:install-file in a single pom.xml中查看如何完成。不过,这应该被视为短期解决方案。