如何包含从插件wget下载的jar作为Maven项目中的依赖项

Question

I have a Jar in a remote location. I can download it to my src/lib using com.googlecode.maven-download-plugin. I want to use this jar in my code as a dependency to resolve compile error.

<build>
    <plugins>
        <plugin>
            <groupId>com.googlecode.maven-download-plugin</groupId>
            <artifactId>download-maven-plugin</artifactId>
            <version>1.4.1</version>
            <executions>
                <execution>
                    <phase>generate-resources</phase>
                    <goals>
                        <goal>wget</goal>
                    </goals>
                    <configuration>
                        <url>http://remoteMachine/file/hello.zip</url>
                        <unpack>true</unpack><outputDirectory>${project.build.directory}/../src/lib</outputDirectory>                           
                    </configuration>
                </execution>
            </executions>                                           
        </plugin>
    </plugins>
</build>

Answer 1

You can create a repo pointing to your jar

<repository>
    <id>cool project</id>
    <name>My cool repo</name>
    <url>file://${dirWithProject}/libs</url>
</repository>

Then just add the dependency

<dependency>
    <groupId>yourGroupUd</groupId>
    <artifactId>your-artifact-id</artifactId>
    <version>0.0.1</version>
</dependency>

Another way is using mvn install:install-file

Or add the dependency like this

 <dependencies>
      <dependency>
         <groupId>junit</groupId>
         <artifactId>junit</artifactId>
         <version>3.8.1</version>
         <scope>test</scope>
      </dependency>

      <dependency>
         <groupId>ldapjdk</groupId>
         <artifactId>ldapjdk</artifactId>
         <scope>system</scope>
         <version>1.0</version>
         <systemPath>${basedir}\src\lib\ldapjdk.jar</systemPath>
      </dependency>
   </dependencies>

source http://www.tutorialspoint.com/maven/maven_external_dependencies.htm

Answer 2

最好的方法是使用maven install指向存储在文件系统上的jar，并在pom中将其用作常规依赖项。

Answer 3

What you are currently attempting to do is against the Maven conventions. If you use custom plugins to randomly unpack ZIPs you will most likely break some of the Maven features eg parallel execution with -T flag. Worst, by going against conventions you make your build harder to understand and loose the biggest benefit of Maven, convention over configuration .

Convert your ZIP into a proper Maven dependency and use standard dependency resolution mechanism, <dependency> section in pom.xml .