The Javadoc of )没有提及任何关于退回的IP地址的形式。 在实施过滤器时,这是空洞的。 我们可以指望什么? 是否有官方特例? 感谢。
可在ServletRequest#getRemoteAddr( javadoc/a>:
getRemoteAddr
java.lang.String getRemoteAddr()收复发送请求的客户或最后代理人的因特网协议地址。 For HTTP servlets, same as the Value of the CGI,
REMOTE_AD.
Okay,请读CGIREMOTE_ADDR/code>。 spec:
4.1.8. REMOTE_ADDR
REMOTE_ADDRpsMUST将贴在向服务器发送请求的客户网络地址。REMOTE_ADDR = hostnumber hostnumber = ipv4-address | ipv6-address ipv4-address = 1*3digit "." 1*3digit "." 1*3digit "." 1*3digit ipv6-address = hexpart [ ":" ipv4-address ] hexpart = hexseq | ( [ hexseq ] "::" [ hexseq ] ) hexseq = 1*4hex *( ":" 1*4hex )IPv6地址的形式在RFC 3513 [15]上作了说明。
在那里,你会发现所有可能的形式。
它用标准文本代文中的一种地址是IPv4或IPv6。
192.168.254.1. I couldn t find an RFC that defines it. Wikipedia mentions that it s acceptable to use octal, binary or hexadecimal notation for any of the quads (and even to mix-and-match), but I ve never seen anything but decimal.我总是在例行公断电中找到IPv4。 但是,最近我注意到,对一些客户来说,HttpServletRequest.getRemoteAddr()的回报表明,这种回报就是静态的。
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