{"id":685,"date":"2015-05-25T10:28:13","date_gmt":"2015-05-25T02:28:13","guid":{"rendered":"https:\/\/ai.zhousir.top\/?p=685"},"modified":"2026-08-18T12:09:33","modified_gmt":"2026-08-18T04:09:33","slug":"ip%e5%9c%b0%e5%9d%80%e5%92%8cinetaddress%e7%b1%bb","status":"publish","type":"post","link":"https:\/\/ai.zhousir.top\/?p=685","title":{"rendered":"IP\u5730\u5740\u548cInetAddress\u7c7b"},"content":{"rendered":"
\n

Java \u7684\u4f18\u52bf\u4e4b\u4e00\u662f\u7a0b\u5e8f\u80fd\u8bbf\u95ee\u7f51\u7edc\u8d44\u6e90\u3002\u8bed\u8a00\u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u7c7b\u6765\u5b8c\u6210\u8fd9\u4ef6\u4e8b\uff0c\u5e95\u5c42\u901a\u4fe1\u8f6f\u4ef6\u90fd\u5728 java.net<\/code> \u5305\u4e2d\u3002\u901a\u4fe1\u53cc\u65b9\u5fc5\u987b\u9075\u5b88\u534f\u8bae\uff0c\u76ee\u524d\u6700\u5e7f\u6cdb\u4f7f\u7528\u7684\u662f TCP\/IP<\/strong>\u3002<\/p>\n

<\/p>\n

\u4e00\u3001TCP\/IP \u534f\u8bae<\/h2>\n

TCP\uff08Transport Control Protocol\uff09\u662f\u4f20\u8f93\u63a7\u5236\u534f\u8bae\uff0cIP\uff08Internet Protocol\uff09\u662f\u7f51\u9645\u534f\u8bae\uff0cTCP\/IP \u4ee3\u8868\u8fd9\u4e24\u4e2a\u534f\u8bae\u7ec4\u6210\u7684\u534f\u8bae\u65cf\u3002\u5b83\u5206\u6210\u56db\u5c42\uff1a<\/p>\n\n\n\n\n\n\n\n\n
\u5c42\u6b21<\/th>\n\u804c\u8d23<\/th>\n<\/tr>\n<\/thead>\n
\u7f51\u7edc\u63a5\u53e3\u5c42<\/td>\n\u63a5\u6536\u548c\u53d1\u9001\u7269\u7406\u5e27<\/td>\n<\/tr>\n
\u7f51\u7edc\u5c42<\/td>\n\u76f8\u90bb\u8282\u70b9\u4e4b\u95f4\u7684\u901a\u4fe1<\/td>\n<\/tr>\n
\u4f20\u8f93\u5c42<\/td>\n\u8d77\u70b9\u5230\u7ec8\u70b9\u7684\u901a\u4fe1<\/td>\n<\/tr>\n
\u5e94\u7528\u5c42<\/td>\n\u6587\u4ef6\u4f20\u8f93\u3001\u7535\u5b50\u90ae\u4ef6\u7b49\u5e94\u7528\u7a0b\u5e8f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

TCP \u628a\u7f51\u7edc\u4fe1\u606f\u5f53\u4f5c\u5b57\u8282\u6d41\u3002\u673a\u5668 A \u628a\u957f\u62a5\u6587\u5206\u7247\u6253\u5305\u53d1\u9001\uff0c\u5305\u5934\u6307\u660e\u76ee\u7684\u5730\u548c\u5728\u63a5\u6536\u5e8f\u5217\u4e2d\u7684\u4f4d\u7f6e\uff1b\u6bcf\u4e2a\u5305\u6309 IP \u5730\u5740\u5728\u8282\u70b9\u95f4\u8f6c\u53d1\u3002\u63a5\u6536\u7aef B \u6309\u6b63\u786e\u987a\u5e8f\u91cd\u65b0\u7ec4\u88c5\u3002<\/p>\n

\u534f\u8bae\u65cf\u91cc\u8fd8\u5305\u62ec\u66f4\u5177\u4f53\u7684\u5e94\u7528\uff1aTelnet \u8fdc\u7a0b\u767b\u5f55\u3001FTP \u6587\u4ef6\u4f20\u8f93\u3001SMTP \u90ae\u4ef6\u4f20\u8f93\u3001NFS \u7f51\u7edc\u6587\u4ef6\u670d\u52a1\uff0c\u4ee5\u53ca\u57fa\u4e8e TCP\/IP \u7684 HTTP\u3002HTTP \u662f WWW \u6d4f\u89c8\u5668\u548c\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u5e94\u7528\u5c42\u534f\u8bae\uff0c\u65e0\u72b6\u6001\u3001\u9762\u5411\u5bf9\u8c61\u3002\u4e00\u6b21 HTTP \u4f1a\u8bdd\u901a\u5e38\u5305\u62ec\u8fde\u63a5\u3001\u8bf7\u6c42\u3001\u5e94\u7b54\u3001\u5173\u95ed\u56db\u6b65\u3002<\/p>\n

Java \u53ef\u7f16\u5199\u5e95\u5c42\u7f51\u7edc\u5e94\u7528\uff08\u4f20\u6587\u4ef6\u3001\u5efa\u90ae\u4ef6\u63a7\u5236\u5668\u3001\u5904\u7406\u7f51\u7edc\u6570\u636e\u7b49\uff09\uff0c\u652f\u6301 ftp\u3001telnet\u3001www \u7b49 Internet \u534f\u8bae\u3002<\/p>\n

\u4e8c\u3001IP \u5730\u5740<\/h2>\n

IP \u5730\u5740\u6807\u660e\u56e0\u7279\u7f51\u4e0a\u4e00\u53f0\u8ba1\u7b97\u673a\u7684\u4f4d\u7f6e\uff0c\u7528 32 \u4f4d\u4e8c\u8fdb\u5236\u8868\u793a\uff08IPv4\uff09\u3002\u5730\u5740\u5206 A\u3001B\u3001C\u3001D\u3001E \u4e94\u7c7b\uff0c\u5e38\u7528 A\u3001B\u3001C\uff1a<\/p>\n\n\n\n\n\n\n\n\n\n
\u7c7b<\/th>\n\u8303\u56f4<\/th>\n\u7ed3\u6784<\/th>\n<\/tr>\n<\/thead>\n
A<\/td>\n1.0.0.0\u2013126.255.255.255<\/td>\n0 + 7 \u4f4d\u7f51\u7edc\u53f7\uff0c\u540e 24 \u4f4d\u4e3b\u673a\u53f7<\/td>\n<\/tr>\n
B<\/td>\n128.0.0.0\u2013191.255.255.255<\/td>\n10 + 14 \u4f4d\u7f51\u7edc\u53f7\uff0c\u540e 16 \u4f4d\u4e3b\u673a\u53f7<\/td>\n<\/tr>\n
C<\/td>\n192.0.0.0\u2013223.255.255.255<\/td>\n110 + 21 \u4f4d\u7f51\u7edc\u53f7\uff0c\u540e 8 \u4f4d\u4e3b\u673a\u53f7<\/td>\n<\/tr>\n
D<\/td>\n224.0.0.0\u2013239.255.255.255<\/td>\n1110\uff0c28 \u4f4d\u591a\u64ad\u7ec4\u7f16\u53f7<\/td>\n<\/tr>\n
E<\/td>\n240.0.0.0\u2013254.255.255.255<\/td>\n1111\uff0c\u4fdd\u7559\u8bd5\u9a8c\u4f7f\u7528<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u901a\u5e38\u7528\u56db\u6bb5\u5341\u8fdb\u5236\u8868\u793a\uff0c\u4f8b\u5982 116.255.226.187<\/code>\uff0c\u6216\u7528\u6587\u5b57\u57df\u540d\u5982 www.xinhua.net<\/code>\u3002\u57df\u540d\u670d\u52a1\u5668\uff08DNS\uff09\u8d1f\u8d23\u628a\u6587\u5b57\u540d\u79f0\u6620\u5c04\u6210\u7f51\u7edc\u5730\u5740\u3002<\/p>\n

\u4e09\u3001InetAddress \u7c7b<\/h2>\n

java.net.InetAddress<\/code> \u7684\u5bf9\u8c61\u8868\u793a IP \u5730\u5740\u548c\u57df\u540d\uff0c\u5e38\u7528\u65b9\u6cd5\uff1a<\/p>\n

    \n
  • \n
    getByName(String s)<\/code>\uff1a\u6309\u4e3b\u673a\u540d\u5f97\u5230\u5bf9\u8c61\uff0c\u6253\u5370\u5f62\u6001\u7c7b\u4f3c www.sina.com.cn\/202.108.37.40<\/section>\n<\/li>\n
  • \n
    getHostName()<\/code>\uff1a\u83b7\u53d6\u57df\u540d<\/section>\n<\/li>\n
  • \n
    getHostAddress()<\/code>\uff1a\u83b7\u53d6 IP \u5730\u5740<\/section>\n<\/li>\n
  • \n
    getLocalHost()<\/code>\uff1a\u672c\u673a\u57df\u540d\u548c IP<\/section>\n<\/li>\n<\/ul>\n

    \u3010\u4f8b 13-1\u3011\u83b7\u53d6 www.xinhua.net \u7684\u57df\u540d\u548c IP\u3002\u539f\u6587\u628a\u5173\u952e\u5b57\u9996\u5b57\u6bcd\u5927\u5199\u3001\u628a getByName<\/code> \u5199\u6210\u4e86 getByname\uff0c\u8fd9\u91cc\u6309\u53ef\u7f16\u8bd1\u5199\u6cd5\u66f4\u6b63\uff1a<\/p>\n

    import java.net.*;\nclass Example10_1 {\n    public static void main(String args[]) {\n        try {\n            InetAddress addr = InetAddress.getByName(\"www.xinhua.net\");\n            String domainName = addr.getHostName();\n            String IPName = addr.getHostAddress();\n            System.out.println(domainName);\n            System.out.println(IPName);\n        } catch (UnknownHostException e) {\n            e.printStackTrace();\n        }\n    }\n}<\/code><\/pre>\n
    \u8fd0\u884c\u7ed3\u679c\u4e3a\uff08\u4ee5\u5f53\u65f6\u89e3\u6790\u4e3a\u51c6\uff09\uff1a<\/p>\n
    www.xinhua.net\n116.255.226.187<\/code><\/pre>\n
    \n
    \u4e00\u53e5\u8bdd\u603b\u7ed3\uff1aTCP\/IP \u8d1f\u8d23\u5206\u5305\u8f6c\u53d1\uff1bInetAddress.getByName \u628a\u57df\u540d\u89e3\u6790\u6210 IP\uff0c\u518d\u7528 getHostName \/ getHostAddress \u8bfb\u51fa\u6765\u3002<\/strong><\/p>\n<\/blockquote>\n<\/section>\n","protected":false},"excerpt":{"rendered":"
    Java \u7684\u4f18\u52bf\u4e4b\u4e00\u662f\u7a0b\u5e8f\u80fd\u8bbf\u95ee\u7f51\u7edc\u8d44\u6e90\u3002\u8bed\u8a00\u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u7c7b\u6765\u5b8c\u6210\u8fd9\u4ef6\u4e8b\uff0c\u5e95\u5c42\u901a\u4fe1\u8f6f\u4ef6\u90fd\u5728 java.net  […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[20],"tags":[41,26],"_links":{"self":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/685"}],"collection":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=685"}],"version-history":[{"count":1,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/685\/revisions"}],"predecessor-version":[{"id":686,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/685\/revisions\/686"}],"wp:attachment":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=685"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=685"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=685"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}