查了一大堆网上的资料全都没用,Google得知,是Windows 7 的socket泄漏 : https://supportkb.riverbed.com/support/index?page=content&id=S23580&actp=LIST_RECENT
补丁下载地址: http://support.microsoft.com/kb/2577795
记录一下.
Windows 7下解决: java.net.SocketException: No buffer space available (maximum connections reached?)