Eclipse创建maven项目遇到错误

背景介绍:
    在使用Spring tool suite (Eclipse) 创建maven webapp项目总遇到错误。详细错误如下。

could not resolve archetype org.apache.maven.archetypes:maven-archetype-webapp:RELEASE from any of the configured repositories
Could not resolve archetype org.apache.maven.archetypes:maven-archetype-webapp:RELEASE from any of the configured repositories.
Could not resolve artifact org.apache.maven.archetypes:maven-archetype-webapp:pom:RELEASE
Failed to resolve version for org.apache.maven.archetypes:maven-archetype-webapp:pom:RELEASE: Could not find metadata org.apache.maven.archetypes:maven-archetype-webapp/maven-metadata.xml in local (E:\Maven\repository)
Failed to resolve version for org.apache.maven.archetypes:maven-archetype-webapp:pom:RELEASE: Could not find metadata org.apache.maven.archetypes:maven-archetype-webapp/maven-metadata.xml in local (E:\Maven\repository)



解决过程:
    在控制台中使用 mvn help:system 命令,发现创建maven project时候下载都是失败的。因此很有可能是网络原因引起的。我的网络环境使用的代理。因此要给maven的配置文件 %MAVEN_HOME%/conf/settings.xml 加上代理配置:

<proxies>
    <!-- proxy
     | Specification for one proxy, to be used in connecting to the network.
     |
    -->
    <proxy>
      <id>optional</id>
      <active>true</active>
      <protocol>http</protocol>
      <username>proxyuser</username>
      <password>proxypass</password>
      <host>proxy.host.net</host>
      <port>80</port>
      <nonProxyHosts>local.net|some.host.com</nonProxyHosts>
    </proxy>
  </proxies>



结果:
    重新构建maven项目,用  mvn help:system  命令观察,maven能够成功下载资源!








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