与maven + ant的连接被拒绝

Question

我正在尝试在windows上构建Hadoop-24。一切正常，突然:

[INFO] Apache Hadoop HttpFS .............................. FAILURE [8.568s]

相关的错误是:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-antrun-plugin:1.7: run (dist) on project hadoop-hdfs-httpfs: An Ant BuildException has occured: java.net.ConnectException: Connection refused: connect
[ERROR] around Ant part ...<get dest="downloads/apache-tomcat-6.0.36.tar.gz" skipexisting="true" verbose="true" src="http://archive.apache.org/dist/tomcat/tomcat-6/v6.0.36/bin/apache-tomcat-6.0.36.tar.gz"/>... @ 5:182 in C:hadoop-srchadoop-hdfs-projecthadoop-hdfs-httpfstargetantrunbuild-main.xml
[ERROR] -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-antrun-plugin:1.7:run (dist) on project hadoop-hdfs-httpfs: An Ant BuildException has occured: java.net.ConnectException: Connection refused: connect
around Ant part ...<get dest="downloads/apache-tomcat-6.0.36.tar.gz" skipexisting="true" verbose="true" src="http://archive.apache.org/dist/tomcat/tomcat-6/v6.0
.36/bin/apache-tomcat-6.0.36.tar.gz"/>... @ 5:182 in C:hadoop-srchadoop-hdfs-projecthadoop-hdfs-httpfstargetantrunbuild-main.xml

一切似乎都表明连接错误。然而:

1. 其他包下载顺利(通过Maven和Ant)
2. 代理配置良好(见第一点)
我可以通过firefox下载上述文件。

现在，我通过手动下载文件并将其放在预期的位置来避免这个问题。然而，我想知道为什么这不是自然工作。你们知道为什么吗?

Answer 1

这是由于代理设置。理论上，maven应该检查/目录下的settings.xml文件。M2，但由于某种原因，maven运行插件不这样做。所以你必须在maven命令中指定它，就像下面的

mvn package -Dhttp.proxyHost=<your proxy host> -Dhttp.proxyPort=8080