| JDK | Maven 3.2 requires JDK 1.6 or above, while Maven 3.0/3.1 requires JDK 1.5 or above (this is to execute Maven - it still allows you to build against 1.3 and prior JDK‘s) |
| Memory | No minimum requirement |
| Disk | No minimum requirement. Approximately 100MB will be used for your local repository, however this will vary depending on usage and can be removed and redownloaded at any time. |
| Operating System | No minimum requirement. On Windows, Windows NT and above or Cygwin is required for the startup scripts. Tested on Windows XP, Fedora Core and Mac OS X. |
系统要求jdk1.6或以上，但是我最近电脑重装系统之后，不想安装太多版本jdk，所以就安装了1.7的最新版。
没想到使用MAVEN的时候，总是无法下载插件，无法联网，就算增加源也解决不了问题，很费解。在Google上查询结果后也没有找到解决办法。
MAVEN错误信息如下：
Downloading: http://maven.oschina.net/content/groups/public/org/apache/maven/plugins/maven-install-plugin/2.4/maven-install-plugin-2.4.pom
三月 06, 2014 8:40:45 下午 org.apache.maven.wagon.providers.http.httpclient.impl.execchain.RetryExec execute
信息: I/O exception (java.net.SocketException) caught when processing request: Connection reset
三月 06, 2014 8:40:45 下午 org.apache.maven.wagon.providers.http.httpclient.impl.execchain.RetryExec execute
信息: Retrying request
三月 06, 2014 8:41:27 下午 org.apache.maven.wagon.providers.http.httpclient.impl.execchain.RetryExec execute
信息: I/O exception (java.net.SocketException) caught when processing request: Connection reset
三月 06, 2014 8:41:27 下午 org.apache.maven.wagon.providers.http.httpclient.impl.execchain.RetryExec execute
信息: Retrying request
三月 06, 2014 8:42:09 下午 org.apache.maven.wagon.providers.http.httpclient.impl.execchain.RetryExec execute
信息: I/O exception (java.net.SocketException) caught when processing request: Connection reset
三月 06, 2014 8:42:09 下午 org.apache.maven.wagon.providers.http.httpclient.impl.execchain.RetryExec execute
信息: Retrying request
[ERROR] Plugin org.apache.maven.plugins:maven-install-plugin:2.4 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.ap
ache.maven.plugins:maven-install-plugin:jar:2.4: Could not transfer artifact org.apache.maven.plugins:maven-install-plugin:pom:2.4 from/to nexus-osc (http://maven.oschina.net/content/groups/public/): Connection reset -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginResolutionException
从错误信息来看，只能从java.net.SocketException入手，因为我其他电脑上的jdk都是1.6,1.7同时存在，而且JAVA_HOME都配置的1.6，所以觉得可能是这方面的问题。
没有换JDK之前：
D:\Git>mvn -v
Apache Maven 3.2.1 (ea8b2b07643dbb1b84b6d16e1f08391b666bc1e9; 2014-02-15T01:37:52+08:00)
Maven home: C:\Program Files\apache-maven
Java version: 1.7.0_45, vendor: Oracle Corporation
Java home: C:\Program Files\Java\jdk1.7.0_45\jre
Default locale: zh_CN, platform encoding: GBK
OS name: "windows 7", version: "6.1", arch: "amd64", family: "windows"
换了JDK之后：
D:\Git>mvn -v
Apache Maven 3.2.1 (ea8b2b07643dbb1b84b6d16e1f08391b666bc1e9; 2014-02-15T01:37:52+08:00)
Maven home: C:\Program Files\apache-maven
Java version: 1.6.0_43, vendor: Sun Microsystems Inc.
Java home: C:\Program Files\Java\jdk1.6.0_43\jre
Default locale: zh_CN, platform encoding: GBK
OS name: "windows 7", version: "6.1", arch: "amd64", family: "windows"
再之后，运行MAVEN就没有问题了。
如果有人遇到类似的问题，可以换个低版本的JDK试试。我电脑安装的都是64位版本，32位没有测试是否有问题。
使用IDEA或Eclipse的还需要在IDE中对MAVEN的jdk进行修改。已知IDEA需要修改两处。Eclipse暂时没试，估计不用改。
解决问题的方法确实简单，不过由于过于相信MAVEN官方说明，因而没考虑到JDK版本的问题，实在是浪费时间。
使用MAVEN请注意，MAVEN不支持最新版jdk1.7,布布扣,bubuko.com
原文：http://blog.csdn.net/isea533/article/details/20651033