使用 maven 创建新的 java 项目时出现错误。我已经设置了所有的 envrionmnet 变量，现在要使用 maven cammand 创建一个项目。当我使用此命令时，出现构建失败错误。
mvn archetype:generate -DgroupId=com.tutorial.test -DartifactId=hellowrld
-DarchetypeArtifactId=maven-archetype-webapp
请帮我。我错过了什么吗？
这是整个输出
[INFO] Scanning for projects...
Downloading: http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-clean-plugin/2.4.1/maven-clean-plugin-2.4.1.pom
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:maven-clean-plugin:2.4.1:
Plugin org.apache.maven.plugins:maven-clean-plugin:2.4.1 or one of its dependencies could not be resolved:
Failed to read artifact descriptor for org.apache.maven.plugins:maven-clean-plugin:jar:2.4.1
Downloading: http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-install-plugin/2.3.1/maven-install-plugin-2.3.1.pom
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:maven-install-plugin:2.3.1:
Plugin org.apache.maven.plugins:maven-install-plugin:2.3.1 or one of its dependencies could not be resolved:
Failed to read artifact descriptor for org.apache.maven.plugins:maven-install-plugin:jar:2.3.1
Downloading: http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-deploy-plugin/2.7/maven-deploy-plugin-2.7.pom
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:maven-deploy-plugin:2.7: Plugin org.apache.maven.plugins:maven-deploy-plugin:2.7 or one of its dependencies could not be resolved:
Failed to read artifact descriptor for org.apache.maven.plugins:maven-deploy-plugin:jar:2.7
Downloading: http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-site-plugin/3.0/maven-site-plugin-3.0.pom
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:maven-site-plugin:3.0: Plugin org.apache.maven.plugins:maven-site-plugin:3.0 or one of its dependencies could not be resolved:
Failed to read artifact descriptor for org.apache.maven.plugins:maven-site-plugin:jar:3.0
Downloading: http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-antrun-plugin/1.3/maven-antrun-plugin-1.3.pom
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:maven-antrun-plugin:1.3: Plugin org.apache.maven.plugins:maven-antrun-plugin:1.3 or one of its dependencies could not be resolved:
Failed to read artifact descriptor for org.apache.maven.plugins:maven-antrun-plugin:jar:1.3
Downloading: http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-assembly-plugin/2.2-beta-5/maven-assembly-plugin-2.2-beta-5.pom
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:maven-assembly-plugin:2.2-beta-5: Plugin org.apache.maven.plugins:maven-assembly-plugin:2.2-beta-5 or one of its dependencies could not be resolved:
Failed to read artifact descriptor for org.apache.maven.plugins:maven-assembly-plugin:jar:2.2-beta-5
Downloading: http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-dependency-plugin/2.1/maven-dependency-plugin-2.1.pom
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:maven-dependency-plugin:2.1: Plugin org.apache.maven.plugins:maven-dependency-plugin:2.1 or one of its dependencies could not be resolved:
Failed to read artifact descriptor for org.apache.maven.plugins:maven-dependency-plugin:jar:2.1
Downloading: http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-release-plugin/2.0/maven-release-plugin-2.0.pom
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:maven-release-plugin:2.0: Plugin org.apache.maven.plugins:maven-release-plugin:2.0 or one of its dependencies could not be resolved:
Failed to read artifact descriptor for org.apache.maven.plugins:maven-release-plugin:jar:2.0
Downloading: http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-metadata.xml
Downloading: http://repo.maven.apache.org/maven2/org/codehaus/mojo/maven-metadata.xml
[WARNING] Could not transfer metadata org.apache.maven.plugins/maven-metadata.xml from/to central (http://repo.maven.apache.org/maven2): repo.maven.apache.org
[WARNING] Could not transfer metadata org.codehaus.mojo/maven-metadata.xml from/to central (http://repo.maven.apache.org/maven2): repo.maven.apache.org
[WARNING] Failure to transfer org.apache.maven.plugins/maven-metadata.xml from http://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced.
Original error: Could not transfer metadata org.apache.maven.plugins/maven-metadata.xml from/to central (http://repo.maven.apache.org/maven2): repo.maven.apache.org
[WARNING] Failure to transfer org.codehaus.mojo/maven-metadata.xml from http://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced.
Original error: Could not transfer metadata org.codehaus.mojo/maven-metadata.xml from/to central (http://repo.maven.apache.org/maven2): repo.maven.apache.org
[INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------ [INFO] Total time: 12.696s
[INFO] Finished at: Tue May 21 05:33:14 ACT 2013 [INFO] Final Memory: 2M/127M
[INFO] ------------------------------------------------------------------------
[ERROR] No plugin found for prefix 'archetype' in the current project and in the plugin groups [org.apache.maven.plugins, org.codehaus.mojo] available from the repositories [local (C:\Users\waqas.ali\.m2\repository), central (http://repo.maven.apache.org/maven2)] -> [Help 1]