java Maven 不构建项目（连接问题）
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Maven not Building project (Connection Issue)
提问by MR Mido
I am getting this error while trying to do a clean install using Maven:
尝试使用 Maven 进行全新安装时出现此错误：
[INFO] Scanning for projects...
Downloading: http://xxx/repository/com/fusionone/device/d
evice-parent/3.5.0-BA-CLIENT-SNAPSHOT/maven-metadata.xml
Downloading: http://xxx/repository/com/fusionone/device/device-pare
nt/3.5.0-BA-CLIENT-SNAPSHOT/maven-metadata.xml
Downloading: http://xxx/repository/com/fusionone/devic
e/device-parent/3.5.0-BA-CLIENT-SNAPSHOT/maven-metadata.xml
May 24, 2012 5:55:56 PM org.apache.maven.wagon.providers.http.httpclient.impl.cl
ient.DefaultRequestDirector tryConnect
INFO: I/O exception (java.net.SocketException) caught when connecting to the tar
get host: Permission denied: connect
May 24, 2012 5:55:56 PM org.apache.maven.wagon.providers.http.httpclient.impl.cl
ient.DefaultRequestDirector tryConnect
INFO: I/O exception (java.net.SocketException) caught when connecting to the tar
get host: Permission denied: connect
May 24, 2012 5:55:56 PM org.apache.maven.wagon.providers.http.httpclient.impl.cl
ient.DefaultRequestDirector tryConnect
INFO: I/O exception (java.net.SocketException) caught when connecting to the tar
get host: Permission denied: connect
May 24, 2012 5:55:56 PM org.apache.maven.wagon.providers.http.httpclient.impl.cl
ient.DefaultRequestDirector tryConnect
INFO: Retrying connect
May 24, 2012 5:55:56 PM org.apache.maven.wagon.providers.http.httpclient.impl.cl
ient.DefaultRequestDirector tryConnect
INFO: Retrying connect
May 24, 2012 5:55:56 PM org.apache.maven.wagon.providers.http.httpclient.impl.cl
ient.DefaultRequestDirector tryConnect
INFO: Retrying connect
May 24, 2012 5:55:56 PM org.apache.maven.wagon.providers.http.httpclient.impl.cl
ient.DefaultRequestDirector tryConnect
INFO: I/O exception (java.net.SocketException) caught when connecting to the tar
get host: Permission denied: connect
May 24, 2012 5:55:56 PM org.apache.maven.wagon.providers.http.httpclient.impl.cl
ient.DefaultRequestDirector tryConnect
INFO: I/O exception (java.net.SocketException) caught when connecting to the tar
get host: Permission denied: connect
May 24, 2012 5:55:56 PM org.apache.maven.wagon.providers.http.httpclient.impl.cl
ient.DefaultRequestDirector tryConnect
INFO: I/O exception (java.net.SocketException) caught when connecting to the tar
get host: Permission denied: connect
May 24, 2012 5:55:56 PM org.apache.maven.wagon.providers.http.httpclient.impl.cl
ient.DefaultRequestDirector tryConnect
INFO: Retrying connect
May 24, 2012 5:55:56 PM org.apache.maven.wagon.providers.http.httpclient.impl.cl
ient.DefaultRequestDirector tryConnect
INFO: Retrying connect
May 24, 2012 5:55:56 PM org.apache.maven.wagon.providers.http.httpclient.impl.cl
ient.DefaultRequestDirector tryConnect
INFO: I/O exception (java.net.SocketException) caught when connecting to the tar
get host: Permission denied: connect
May 24, 2012 5:55:56 PM org.apache.maven.wagon.providers.http.httpclient.impl.cl
ient.DefaultRequestDirector tryConnect
INFO: Retrying connect
May 24, 2012 5:55:56 PM org.apache.maven.wagon.providers.http.httpclient.impl.cl
ient.DefaultRequestDirector tryConnect
INFO: Retrying connect
May 24, 2012 5:55:56 PM org.apache.maven.wagon.providers.http.httpclient.impl.cl
ient.DefaultRequestDirector tryConnect
INFO: I/O exception (java.net.SocketException) caught when connecting to the tar
get host: Permission denied: connect
May 24, 2012 5:55:56 PM org.apache.maven.wagon.providers.http.httpclient.impl.cl
ient.DefaultRequestDirector tryConnect
INFO: I/O exception (java.net.SocketException) caught when connecting to the tar
get host: Permission denied: connect
May 24, 2012 5:55:56 PM org.apache.maven.wagon.providers.http.httpclient.impl.cl
ient.DefaultRequestDirector tryConnect
INFO: Retrying connect
May 24, 2012 5:55:56 PM org.apache.maven.wagon.providers.http.httpclient.impl.cl
ient.DefaultRequestDirector tryConnect
INFO: Retrying connect
[WARNING] Could not transfer metadata com.xxx.device:device-parent:3.5.0-B
A-CLIENT-SNAPSHOT/maven-metadata.xml from/to maestro-project-server (http://xxx): Permission denied: connect
[WARNING] Could not transfer metadata com.xxx.device:device-parent:3.5.0-B
A-CLIENT-SNAPSHOT/maven-metadata.xml from/to xxx-xxx-repo (http://xxx): Permission denied: connect
[WARNING] Could not transfer metadata com.xxx.device:device-parent:3.5.0-B
A-CLIENT-SNAPSHOT/maven-metadata.xml from/to re-repo (http://xx.xx.x.xxx:xxx/re
pository): Permission denied: connect
采纳答案by Micha? Kalinowski
That's pretty obvious: "Permission denied". That's it. Repository (one of them) you're using needs you to authenticate and authorize yourself before acccess. You should stop using this repository if you really don't have access or put your login/password e.g. into your settings.xmlfile like thisso Maven can introduce you to the server :).
这很明显：“权限被拒绝”。而已。您正在使用的存储库（其中之一）需要您在访问之前对自己进行身份验证和授权。你应该停止使用这个仓库，如果你真的没有访问或把你的登录/密码，如到您的settings.xml文件中像这样使Maven可以把你介绍给服务器:)。
回答by Roman Nazarevych
I have the same trouble with maven. I solve this by adding mirrors to maven setting.xml file
我对 maven 也有同样的问题。我通过向 maven setting.xml 文件添加镜像来解决这个问题
HERE are MIRRORS http://docs.codehaus.org/display/MAVENUSER/Mirrors+Repositories
这里是镜像http://docs.codehaus.org/display/MAVENUSER/Mirrors+Repositories
and documentation http://maven.apache.org/settings.html#Mirrors
回答by naXa
When Maven fetches the dependencies and the parent projects, it throws a Permission denied: connecterror.
I have found that the issue may be related to a known bugin JDK 1.7 and Windows 7. The issue have either been with the application not fully supporting IPv6 or with a network/firewall that does not fully support IPv6. The workaround is to set -Djava.net.preferIPv4Stack=truein the Java or Maven command line arguments.
当 Maven 获取依赖项和父项目时，它会抛出Permission denied: connect错误。
我发现该问题可能与JDK 1.7 和 Windows 7 中的一个已知错误有关。该问题要么与应用程序不完全支持 IPv6，要么与网络/防火墙不完全支持 IPv6 相关。解决方法是-Djava.net.preferIPv4Stack=true在 Java 或 Maven 命令行参数中设置。
