Question

我正在使用Maven 3.2.3。我在JAR项目中有这种依赖...

    <dependency>
        <groupId>joda-time</groupId>
        <artifactId>joda-time</artifactId>
        <version>1.6.2</version>
        <scope>provided</scope>
    </dependency>

这个工件存在于我的〜/ .m2 / repository中。但是，每当我构建项目时（这只是每天第一次发生），Maven会再次尝试下载工件......

Downloading: https://repository-mainco.forge.cloudbees.com/release/joda-time/joda-time/maven-metadata.xml
Downloading: http://files.couchbase.com/maven2/joda-time/joda-time/maven-metadata.xml
Downloading: https://repository-mainco.forge.cloudbees.com/private/joda-time/joda-time/maven-metadata.xml
Downloading: http://download.java.net/maven/2/joda-time/joda-time/maven-metadata.xml
Downloading: https://repo.maven.apache.org/maven2/joda-time/joda-time/maven-metadata.xml
Downloaded: https://repo.maven.apache.org/maven2/joda-time/joda-time/maven-metadata.xml (931 B at 0.7 KB/sec)

在我的〜/ .m2 / settings.xml文件中，我将updatePolciy设置为never ...

    <repository>
      <id>cloudbees-private-release-repository</id>
      <url>https://repository-mainco.forge.cloudbees.com/release</url>
      <releases>
            <enabled>true</enabled>
            <updatePolicy>never</updatePolicy>
      </releases>
      <snapshots>
            <enabled>false</enabled>
      </snapshots>
    </repository>

所以我不确定为什么Maven会尝试下载我已经拥有的这个工件。如何让它停止（也就是说，如果我没有它，只下载工件）？

编辑：我将以下内容添加到〜/ .m2 / settings.xml文件的存储库部分...

    <repository>
            <id>central</id>
            <url>http://download.java.net/maven/2</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
            <releases>
                <enabled>true</enabled>
                <updatePolicy>never</updatePolicy>
            </releases>
    </repository>
    <repository>
            <id>central2</id>
            <url>https://repo.maven.apache.org/maven2</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
            <releases>
                <enabled>true</enabled>
                <updatePolicy>never</updatePolicy>
            </releases>
    </repository>
    <repository>
            <id>nuxeo</id>
            <url>http://maven.nuxeo.org/nexus/content/repositories/public</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
            <releases>
                <enabled>true</enabled>
                <updatePolicy>never</updatePolicy>
            </releases>
    </repository>
    <repository>
            <id>spring-repo</id>
            <url>http://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
            <releases>
                <enabled>true</enabled>
                <updatePolicy>never</updatePolicy>
            </releases>
    </repository>

但是尽管如此，当我运行构建时，前几行处理产生......

Downloading: http://download.java.net/maven/2/org/mainco/subco/orders/78.0.0-SNAPSHOT/maven-metadata.xml
Downloading: http://download.java.net/maven/2/org/mainco/subco/subco/78.0.0-SNAPSHOT/maven-metadata.xml
Downloading: http://download.java.net/maven/2/org/mainco/subco/core/78.0.0-SNAPSHOT/maven-metadata.xml
Downloading: http://download.java.net/maven/2/org/mainco/subco/session/78.0.0-SNAPSHOT/maven-metadata.xml
Downloading: http://download.java.net/maven/2/joda-time/joda-time/maven-metadata.xml
Downloading: https://repository-mainco.forge.cloudbees.com/private/joda-time/joda-time/maven-metadata.xml
Downloading: http://maven.nuxeo.org/nexus/content/repositories/public/joda-time/joda-time/maven-metadata.xml
Downloading: http://repo.spring.io/milestone/joda-time/joda-time/maven-metadata.xml
Downloading: http://files.couchbase.com/maven2/joda-time/joda-time/maven-metadata.xml
Downloaded: http://maven.nuxeo.org/nexus/content/repositories/public/joda-time/joda-time/maven-metadata.xml (942 B at 1.3 KB/sec)

所以尽管我指的是“从不”，但Maven仍然无视它，或者我仍然没有正确配置。

编辑3：根据请求，这是pom.xml文件......

<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>
    <artifactId>core</artifactId>
    <packaging>jar</packaging>
    <name>core</name>
    <parent>
        <artifactId>subco</artifactId>
        <groupId>org.mainco.subco</groupId>
        <version>78.0.0-SNAPSHOT</version>
    </parent>
    <url>http://maven.apache.org</url>

    <dependencyManagement>
        <dependencies>
            <!-- Third Party dependencies -->
            <dependency>
                <groupId>aopalliance</groupId>
                <artifactId>aopalliance</artifactId>
                <version>${version.aopalliance}</version>
            </dependency>
            <dependency>
                <groupId>taglibs</groupId>
                <artifactId>standard</artifactId>
                <version>${version.standard.taglibs}</version>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <dependencies>
        <dependency>
            <groupId>org.mainco.subco</groupId>
            <artifactId>session</artifactId>
            <version>${project.parent.version}</version>
                        <exclusions>
                                <exclusion>
                                        <groupId>junit</groupId>
                                        <artifactId>junit-dep</artifactId>
                                </exclusion>
                        </exclusions>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.15</version>
            <exclusions>
                <exclusion>
                    <groupId>com.sun.jmx</groupId>
                    <artifactId>jmxri</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>com.sun.jdmk</groupId>
                    <artifactId>jmxtools</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>javax.jms</groupId>
                    <artifactId>jms</artifactId>
                </exclusion>
            </exclusions>
                <scope>provided</scope>
            </dependency>
                <dependency>
                        <groupId>org.apache.httpcomponents</groupId>
                        <artifactId>httpclient</artifactId>
                        <version>4.3.4</version>
                </dependency>
        <!-- AWS Java SDK -->
        <dependency>
            <groupId>com.amazonaws</groupId>
            <artifactId>aws-java-sdk</artifactId>
            <version>1.8.5</version>
        </dependency>
        <dependency>
            <groupId>com.google.code.gson</groupId>
            <artifactId>gson</artifactId>
            <version>2.2.2</version>
        </dependency>
        <dependency>
                 <groupId>org.springframework.security</groupId>
                 <artifactId>spring-security-config</artifactId>
                 <scope>test</scope>
        </dependency>
    <!-- Powermock for testing statics -->
        <!-- Required for PowerMock -->
        <dependency>
            <groupId>org.powermock</groupId>
            <artifactId>powermock-module-junit4</artifactId>
            <version>${powermock.version}</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.powermock</groupId>
            <artifactId>powermock-api-mockito</artifactId>
        <version>${powermock.version}</version>
            <!-- <version>1.4.12</version> -->
            <scope>test</scope>
        </dependency>
        <!-- Required for PowerMockRule -->
        <dependency>
            <groupId>org.powermock</groupId>
            <artifactId>powermock-module-junit4-rule-agent</artifactId>
        <version>${powermock.version}</version>
            <!-- <version>1.4.12</version> -->
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.powermock</groupId>
            <artifactId>powermock-api-easymock</artifactId>
            <version>${powermock.version}</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.easymock</groupId>
            <artifactId>easymock</artifactId>
            <version>3.1</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
            <scope>provided</scope>
        </dependency>
        <!-- spymemcached -->
        <dependency>
            <groupId>spy</groupId>
            <artifactId>spymemcached</artifactId>
            <version>2.8.4</version>
        </dependency>
        <!-- Commons stuff -->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>3.1</version>
        </dependency>
        <dependency>
            <groupId>org.jasypt</groupId>
            <artifactId>jasypt</artifactId>
            <version>1.9.0</version>
        </dependency>
        <dependency>
            <groupId>org.jasypt</groupId>
            <artifactId>jasypt-springsecurity3</artifactId>
            <version>1.9.0</version>
        </dependency>
        <dependency>
            <groupId>org.jasypt</groupId>
            <artifactId>jasypt-hibernate4</artifactId>
            <version>1.9.0</version>
        </dependency>
        <dependency>
            <groupId>org.bouncycastle</groupId>
            <artifactId>bcprov-jdk16</artifactId>
            <version>1.46</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.xml.bind</groupId>
            <artifactId>jaxb-api</artifactId>
            <version>2.2.9</version>
            <scope>provided</scope>
        </dependency>

        <!-- Import the JPA API using the provided scope It is included in JBoss 
            AS 7 / EAP 6 -->
        <dependency>
            <groupId>org.hibernate.javax.persistence</groupId>
            <artifactId>hibernate-jpa-2.1-api</artifactId>
            <version>1.0.0.Final</version>
        </dependency> 

        <!-- JSR-303 (Bean Validation) Implementation -->
        <!-- Provides portable constraints such as @Email -->
        <!-- Hibernate Validator is shipped in JBoss AS 7 -->
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator</artifactId>
            <version>${hibernate.validator.version}</version>
            <exclusions>
                <exclusion>
                    <groupId>org.slf4j</groupId>
                    <artifactId>slf4j-api</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
            <version>${hibernate.version}</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-ehcache</artifactId>
            <version>${hibernate.version}</version>
        </dependency>

        <!-- Import Spring dependencies, these are either from community or versions 
            certified in WFK2 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-expression</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-web</artifactId>
        </dependency>
        <!-- Other community dependencies -->
        <dependency>
            <groupId>aopalliance</groupId>
            <artifactId>aopalliance</artifactId>
        </dependency>
        <dependency>
            <groupId>taglibs</groupId>
            <artifactId>standard</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.velocity</groupId>
            <artifactId>velocity</artifactId>
            <version>1.6.3</version>
            <scope>provided</scope>
        </dependency>
        <!-- Needed for running tests (you may also use TestNG) -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>${version.junit}</version>
            <scope>test</scope>
        </dependency>

        <!-- Add cglib for the MemberDaoTest -->
        <dependency>
            <groupId>cglib</groupId>
            <artifactId>cglib-nodep</artifactId>
            <version>2.2</version>
            <scope>test</scope>
        </dependency> 

        <!-- Add JSON dependency, specified in jboss-deployment-structure.xml -->
        <dependency>
            <groupId>org.codehaus.jackson</groupId>
            <artifactId>jackson-mapper-asl</artifactId>
            <version>1.9.3</version>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>org.codehaus.jackson</groupId>
            <artifactId>jackson-core-asl</artifactId>
            <version>1.9.3</version>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.7.2</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.directwebremoting</groupId>
            <artifactId>dwr</artifactId>
            <version>3.0.0-rc2</version>
        </dependency>
        <dependency>
            <groupId>net.jeremybrooks</groupId>
            <artifactId>knicker</artifactId>
            <version>2.3.3</version>
        </dependency>
        <dependency>
            <groupId>net.java.dev.jets3t</groupId>
            <artifactId>jets3t</artifactId>
            <version>0.9.0</version>
            <exclusions>
                <exclusion>
                    <groupId>org.apache.httpcomponents</groupId>
                    <artifactId>httpcore</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>2.4</version>
        </dependency>
        <dependency>
            <groupId>commons-codec</groupId>
            <artifactId>commons-codec</artifactId>
            <version>1.9</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${version.mysql}</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.simpleframework</groupId>
            <artifactId>simple</artifactId>
            <version>5.0.7</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.mockito</groupId>
            <artifactId>mockito-all</artifactId>
            <version>${mockito.version}</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi</artifactId>
            <version>3.9</version>
        </dependency>
        <dependency>
            <groupId>net.sf.json-lib</groupId>
            <artifactId>json-lib</artifactId>
            <version>2.4</version>
            <classifier>jdk15</classifier>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.8.2</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjrt</artifactId>
            <version>1.8.2</version>
        </dependency>
        <dependency>
            <groupId>org.owasp.esapi</groupId>
            <artifactId>esapi</artifactId>
            <version>2.1.0</version>
        </dependency>
        <dependency>
            <groupId>org.owasp.antisamy</groupId>
            <artifactId>antisamy</artifactId>
            <version>1.5.3</version>
        </dependency>
        <!-- Joda Time, supplied by JBoss -->
        <dependency>
            <groupId>joda-time</groupId>
            <artifactId>joda-time</artifactId>
            <version>1.6.2</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>net.sf.opencsv</groupId>
            <artifactId>opencsv</artifactId>
            <version>2.3</version>
        </dependency>
        <dependency>
            <groupId>com.lowagie</groupId>
            <artifactId>itext</artifactId>
            <version>2.1.7</version>
        </dependency>
    <dependency>
        <groupId>org.mainco.subco</groupId>
        <artifactId>database</artifactId>
        <version>${project.parent.version}</version>
        <scope>test</scope>
    </dependency> 
        <dependency>
            <groupId>org.subethamail</groupId>
            <artifactId>subethasmtp</artifactId>
            <version>3.1.7</version>
            <scope>test</scope>
        </dependency>
    </dependencies>
</project>

Answer 1

使用dependency：list-repositories目标来确定存储库ID

mvn dependency:list-repositories

你会得到这样的东西：

[INFO] --- maven-dependency-plugin:2.8:list-repositories (default-cli) @ hello-world ---
[INFO] Repositories Used by this build:
[INFO]       id: central
      url: https://repo.maven.apache.org/maven2
   layout: default
snapshots: [enabled => false, update => daily]
 releases: [enabled => true, update => daily]

之后你可以配置合适的仓库（在我们的例子中是中心）：

 <repository>
        <id>central</id>
        <url>https://repo.maven.apache.org/maven2</url>
        <releases>
            <updatePolicy>never</updatePolicy>
        </releases>
        <snapshots>
            <enabled>false</enabled>
        </snapshots>
    </repository>

你会得到结果：

[INFO] --- maven-dependency-plugin:2.8:list-repositories (default-cli) @ hello-world ---
[INFO] Repositories Used by this build:
[INFO]       id: central
      url: https://repo.maven.apache.org/maven2
   layout: default
snapshots: [enabled => false, update => daily]
 releases: [enabled => true, update => never]

在我已经拥有工件后，如何阻止从远程存储库下载？

1 个答案: