How do I download all dependencies in advance?

问题

I'm writing a circleci script and I'd like to resolve all dependencies up front once, because I plan to run maven many times in this script. I'd like to make this as fast as possible and I noticed that maven still reaches out to download poms, even if it has the latest dependencies.

To avoid downloading poms, I put ran maven with -o, offline mode. But that caused errors about not having dependencies. So then I ran this command to download dependencies and plugins in advance:

mvn dependency:resolve dependency:resolve-plugin

But after I run that, if I immediately run

mvn -o test

Then I get an error. The error says this:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-resources-plugin:2.6:resources (default-resources) on project MyProject: Execution default-resources of goal org.apache.maven.plugins:maven-resources-plugin:2.6:resources failed: Plugin org.apache.maven.plugins:maven-resources-plugin:2.6 or one of its dependencies could not be resolved: The following artifacts could not be resolved: org.apache.maven:maven-profile:jar:2.0.6, org.apache.maven:maven-repository-metadata:jar:2.0.6, org.apache.maven:maven-plugin-registry:jar:2.0.6, classworlds:classworlds:jar:1.1-alpha-2: Cannot access central (https://repo.maven.apache.org/maven2) in offline mode and the artifact org.apache.maven:maven-profile:jar:2.0.6 has not been downloaded from it before.

If I build the project locally with mvn test, it works fine. If I run a mvn package on circleci instead of mvn dependency:resolve dependency:resolve-plugin, it works fine.

If I've downloaded all dependencies and plugins in advance, why am I getting the above error? How do I resolve this?

Here is my pom:

<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/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.app.common</groupId>
    <artifactId>app</artifactId>
    <packaging>war</packaging>
    <version>1.0-SNAPSHOT</version>
    <name>app Rest</name>
    <url>http://maven.apache.org</url>

    <repositories>
        <repository>
            <id>maven2-repository.java.net</id>
            <name>Java.net Repository for Maven</name>
            <url>http://download.java.net/maven/2/</url>
            <layout>default</layout>
        </repository>
    </repositories>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.8.2</version>
            <scope>test</scope>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.mockito/mockito-all -->
        <dependency>
            <groupId>org.mockito</groupId>
            <artifactId>mockito-all</artifactId>
            <version>1.10.19</version>
            <scope>test</scope>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.glassfish.jersey.core/jersey-client -->
        <dependency>
            <groupId>org.glassfish.jersey.core</groupId>
            <artifactId>jersey-client</artifactId>
            <version>2.26</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.glassfish.jersey.containers/jersey-container-servlet-core -->
        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-servlet-core</artifactId>
            <version>2.26</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.glassfish.jersey.core/jersey-server -->
        <dependency>
            <groupId>org.glassfish.jersey.core</groupId>
            <artifactId>jersey-server</artifactId>
            <version>2.26</version>
            <exclusions>
                <exclusion>
                    <artifactId>javax.annotation-api</artifactId>
                    <groupId>javax.annotation</groupId>
                </exclusion>
                <exclusion>
                    <artifactId>jersey-media-jaxb</artifactId>
                    <groupId>org.glassfish.jersey.media</groupId>
                </exclusion>
            </exclusions>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.glassfish.jersey.core/jersey-common -->
        <dependency>
            <groupId>org.glassfish.jersey.core</groupId>
            <artifactId>jersey-common</artifactId>
            <version>2.26</version>
            <exclusions>
                <exclusion>
                    <artifactId>osgi-resource-locator</artifactId>
                    <groupId>org.glassfish.hk2</groupId>
                </exclusion>
                <exclusion>
                    <artifactId>javax.annotation-api</artifactId>
                    <groupId>javax.annotation</groupId>
                </exclusion>
            </exclusions>
        </dependency>

        <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>4.0.0</version>
            <scope>provided</scope>
        </dependency>

        <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-core -->
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.9.2</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-annotations -->
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
            <version>2.9.2</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.9.2</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.jaxrs/jackson-jaxrs-json-provider -->
        <dependency>
            <groupId>com.fasterxml.jackson.jaxrs</groupId>
            <artifactId>jackson-jaxrs-json-provider</artifactId>
            <version>2.9.2</version>
            <exclusions>
                <exclusion>
                    <artifactId>jackson-jaxrs-base</artifactId>
                    <groupId>com.fasterxml.jackson.jaxrs</groupId>
                </exclusion>
            </exclusions>
        </dependency>


        <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.module/jackson-module-jaxb-annotations -->
        <dependency>
            <groupId>com.fasterxml.jackson.module</groupId>
            <artifactId>jackson-module-jaxb-annotations</artifactId>
            <version>2.9.2</version>
        </dependency>


        <!-- https://mvnrepository.com/artifact/org.glassfish.jersey.media/jersey-media-json-jackson -->
        <dependency>
            <groupId>org.glassfish.jersey.media</groupId>
            <artifactId>jersey-media-json-jackson</artifactId>
            <version>2.26</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.glassfish.jersey.ext/jersey-entity-filtering -->
        <dependency>
            <groupId>org.glassfish.jersey.ext</groupId>
            <artifactId>jersey-entity-filtering</artifactId>
            <version>2.26</version>
        </dependency>


        <!-- https://mvnrepository.com/artifact/org.codehaus.jettison/jettison -->
        <dependency>
            <groupId>org.codehaus.jettison</groupId>
            <artifactId>jettison</artifactId>
            <version>1.3.8</version>
            <exclusions>
                <exclusion>
                    <artifactId>stax-api</artifactId>
                    <groupId>stax</groupId>
                </exclusion>
            </exclusions>
        </dependency>

        <!-- https://mvnrepository.com/artifact/javax.xml.bind/jaxb-api -->
        <dependency>
            <groupId>javax.xml.bind</groupId>
            <artifactId>jaxb-api</artifactId>
            <version>2.3.0</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/com.sun.xml.bind/jaxb-impl -->
        <dependency>
            <groupId>com.sun.xml.bind</groupId>
            <artifactId>jaxb-impl</artifactId>
            <version>2.3.0</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.45</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/redis.clients/jedis -->
        <dependency>
            <groupId>redis.clients</groupId>
            <artifactId>jedis</artifactId>
            <version>2.9.0</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/com.maxmind.db/maxmind-db -->
        <dependency>
            <groupId>com.maxmind.db</groupId>
            <artifactId>maxmind-db</artifactId>
            <version>1.2.2</version>
        </dependency>


        <!-- https://mvnrepository.com/artifact/com.maxmind.geoip2/geoip2 -->
        <dependency>
            <groupId>com.maxmind.geoip2</groupId>
            <artifactId>geoip2</artifactId>
            <version>2.10.0</version>
        </dependency>


        <!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpclient -->
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>4.5.3</version>
            <exclusions>
                <exclusion>
                    <artifactId>commons-codec</artifactId>
                    <groupId>commons-codec</groupId>
                </exclusion>
                <exclusion>
                    <artifactId>commons-logging</artifactId>
                    <groupId>commons-logging</groupId>
                </exclusion>
            </exclusions>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpcore -->
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpcore</artifactId>
            <version>4.4.8</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-pool2 -->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-pool2</artifactId>
            <version>2.4.3</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.glassfish.hk2.external/javax.inject -->
        <dependency>
            <groupId>org.glassfish.hk2.external</groupId>
            <artifactId>javax.inject</artifactId>
            <version>2.5.0-b60</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.glassfish.jersey.inject/jersey-hk2 -->
        <dependency>
            <groupId>org.glassfish.jersey.inject</groupId>
            <artifactId>jersey-hk2</artifactId>
            <version>2.26</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.glassfish.hk2/hk2-api -->
        <dependency>
            <groupId>org.glassfish.hk2</groupId>
            <artifactId>hk2-api</artifactId>
            <version>2.5.0-b60</version>
            <exclusions>
                <exclusion>
                    <artifactId>aopalliance-repackaged</artifactId>
                    <groupId>org.glassfish.hk2.external</groupId>
                </exclusion>
                <exclusion>
                    <artifactId>javax.inject</artifactId>
                    <groupId>javax.inject</groupId>
                </exclusion>
            </exclusions>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.glassfish.hk2/hk2-utils -->
        <dependency>
            <groupId>org.glassfish.hk2</groupId>
            <artifactId>hk2-utils</artifactId>
            <version>2.5.0-b60</version>
            <exclusions>
                <exclusion>
                    <artifactId>javax.inject</artifactId>
                    <groupId>javax.inject</groupId>
                </exclusion>
                <exclusion>
                    <artifactId>javax.annotation-api</artifactId>
                    <groupId>javax.annotation</groupId>
                </exclusion>
            </exclusions>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.glassfish.hk2/hk2-locator -->
        <dependency>
            <groupId>org.glassfish.hk2</groupId>
            <artifactId>hk2-locator</artifactId>
            <version>2.5.0-b60</version>
            <exclusions>
                <exclusion>
                    <artifactId>javassist</artifactId>
                    <groupId>org.javassist</groupId>
                </exclusion>
                <exclusion>
                    <artifactId>aopalliance-repackaged</artifactId>
                    <groupId>org.glassfish.hk2.external</groupId>
                </exclusion>
                <exclusion>
                    <artifactId>javax.annotation-api</artifactId>
                    <groupId>javax.annotation</groupId>
                </exclusion>
            </exclusions>
        </dependency>

        <!-- https://mvnrepository.com/artifact/javax.validation/validation-api -->
        <dependency>
            <groupId>javax.validation</groupId>
            <artifactId>validation-api</artifactId>
            <version>2.0.0.Final</version>
        </dependency>


    </dependencies>

    <build>
        <finalName>app Rest</finalName>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

回答1:

Try with

mvn dependency:go-offline

dependency:go-offline Full name:

org.apache.maven.plugins:maven-dependency-plugin:3.0.2:go-offline

Description:

Goal that resolves all project dependencies, including plugins and reports and their dependencies.

But , before you should set the version for the dependency and compiler plugin into your pom:

<plugins>
        <plugin>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.7.0</version>
            <configuration>
                <source>1.8</source>
                <target>1.8</target>
            </configuration>
        </plugin>
         <plugin>
            <artifactId>maven-dependency-plugin</artifactId>
            <version>3.0.2</version>
        </plugin>
    </plugins>

来源：https://stackoverflow.com/questions/48453678/how-do-i-download-all-dependencies-in-advance