java - Artifact 下载耗时多无结果

Question

请帮我解决以下情况:

1. 我有两个 Nexus 存储库

2. 我在 C:\Users\Login.m2 中有两个 settings.xml 文件:

   发布开发商快照开发商

   <profiles>
       <profile>
           <id>default</id>
           <activation>
               <activeByDefault>true</activeByDefault>
           </activation>
           <repositories>
               <repository>
                   <id>releases</id>
                   <name>Releases Repository</name>
                   <url>http://30.30.20.40:8085/nexus/content/repositories/releases/</url>
                   <releases>
                       <enabled>true</enabled>
                   </releases>
                   <snapshots>
                       <enabled>false</enabled>
                   </snapshots>
               </repository>
               <repository>
                   <id>snapshots</id>
                   <name>Snapshots Repository</name>
                   <url>http://30.30.20.40:8085/nexus/content/repositories/snapshots/</url>
                   <releases>
                       <enabled>false</enabled>
                   </releases>
                   <snapshots>
                       <enabled>true</enabled>
                   </snapshots>
               </repository>
               <repository>
                   <id>thirdparty</id>
                   <name>3-d Party Artifacts Repository</name>
                   <url>http://30.30.20.40:8085/nexus/content/repositories/thirdparty/</url>
                              <releases>
                       <enabled>true</enabled>
                   </releases>
                   <snapshots>
                       <enabled>false</enabled>
                   </snapshots>
               </repository>
           </repositories>
       </profile>
   </profiles>
   

在 C:\apache-maven-3.2.3\conf 中:

<?xml version="1.0" encoding="UTF-8"?>
<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0" 
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
          xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">

  <servers>
   <server>
      <id>snapshots</id>
      <username>deployment</username>
      <password>@@@@@@@@</password>
   </server>
   
   <server>
            <id>releases</id>
            <username>developer</username>
            <password>@@@@@@</password>
   </server>
  <server>
            <id>snapshots</id>
            <username>developer</username>
            <password>@@@@@@</password>
    </server>
   
    <server>
            <id>thirdparty</id>
            <username>developer</username>
            <password>@@@@@@@@@@</password>
    </server>
 </servers>

    
  
  <profiles>
    
  <profile>
    <id>nexus</id>
    <repositories>
             <repository>
                <id>nexus-repo</id>
                <name>Nexus repo</name>
                <url>http://192.22.0.17:8080/nexus-webapp-2.11.0-02/content/groups/public/</url>
                <releases>
                  <enabled>true</enabled>
                </releases>
                <snapshots>
                  <enabled>true</enabled>
                </snapshots>
             </repository>
      
    </repositories>

</profile>
   
  <profile>
    <id>adc</id>
    <repositories>
           <repository>
                    <id>releases</id>
                    <name> Releases Repository</name>
                    <url>http://30.30.20.40:8085/nexus/content/repositories/releases/</url>
                    <releases>
                        <enabled>true</enabled>
                    </releases>
                    <snapshots>
                        <enabled>false</enabled>
                    </snapshots>
           </repository>
        
        <repository>
                    <id>snapshots</id>
                    <name>Snapshots Repository</name>
                    <url>http://30.30.20.40:8085/nexus/content/repositories/snapshots/</url>
                    <releases>
                        <enabled>false</enabled>
                    </releases>
                    <snapshots>
                        <enabled>true</enabled>
                    </snapshots>
                </repository>
    
          <repository>
            <id> thirdparty</id>
            <name>3-d Party Artifacts Repository</name>
                <url>http://30.30.20.40:8085/nexus/content/repositories/thirdparty/</url>
                    <releases>
                <enabled>true</enabled>
                </releases>
                <snapshots>
                    <enabled>false</enabled>
                </snapshots>
           </repository>
      
      
    </repositories>
    
    <pluginRepositories>
      <pluginRepository>
        <id>nexus-repo</id>
        <name>Nexus repo </name>
        <url>http://192.22.0.17:8080/nexus-webapp-2.11.0-02/content/groups/public/</url>
        <releases>
          <enabled>true</enabled>
        </releases>
        <snapshots>
          <enabled>true</enabled>
        </snapshots>
      </pluginRepository>
      
  <pluginRepository>
        <id>releases</id>
        <name> Releases Repository</name>
        <url>http://30.30.20.40:8085/nexus/content/repositories/releases/</url>
      <releases>
        <enabled>true</enabled>
    </releases>
        <snapshots>
            <enabled>false</enabled>
    </snapshots>
      </pluginRepository>
      
      
    </pluginRepositories>
</profile>
  </profiles>
<activeProfiles>
  <activeProfile>nexus</activeProfile>
  <activeProfile>adc</activeProfile>
</activeProfiles>
</settings>

1. 问题是:当我运行“mvn clean package”时，下载需要很长时间:

[INFO] Downloading:http://30.30.20.40:8085/nexus/content/repositories/releases/org/apache/httpcomponents/project/4.1.1/project-4.1.1.pom[INFO] Downloading:http://30.30.20.40:8085/nexus/content/repositories/thirdparty/org/apache/httpcomponents/project/4.1.1/project-4.1.1.pom

看起来 Maven 尝试在一个存储库中下载 Artifact ，当失败时尝试在另一个存储库中下载 Artifact 。

我正在尝试更正 C:\Program Files\Java\jdk1.7.0_67\jre\lib\amd64\jvm.cfg，如此处所述 https://rogerkeays.com/why-is-maven-so-slow但没有效果。

这是我的附加设置:

java -version

java version "1.8.0_40" Java(TM) SE Runtime Environment (build1.8.0_40-b26) Java HotSpot(TM) 64-Bit Server VM (build 25.40-b25, mixed mode)

mvn -version Apache Maven 3.2.3(33f8c3e1027c3ddde99d3cdebad2656a31e8fdf4; 2014-08-12T00:58:10+04:00)Maven home: C:\apache-maven-3.2.3\bin.. Java version: 1.7.0_67,vendor: Oracle Corporation Java home: C:\ProgramFiles\Java\jdk1.7.0_67\jre Default locale: ru_RU, platform encoding:Cp1251 OS name: "windows 7", version: "6.1", arch: "amd64", family:"windows"

Answer 1

您可以使用 -T 命令在多线程中运行 maven，如下所示，

mvn clean install -T 4

这将在 4 个线程中执行 Maven 构建。您可以尝试 mvn --help 了解更多信息。