{"id":859,"date":"2008-07-06T20:39:00","date_gmt":"2008-07-06T12:39:00","guid":{"rendered":"http:\/\/note.systw.net\/note\/?p=859"},"modified":"2023-11-06T20:49:55","modified_gmt":"2023-11-06T12:49:55","slug":"application-web","status":"publish","type":"post","link":"https:\/\/systw.net\/note\/archives\/859","title":{"rendered":"Application Web"},"content":{"rendered":"\n

WWW(world wide web)\u6b77\u53f2<\/strong>
1945,hypertext(\u8d85\u93c8\u7d50\u6587\u4ef6),MIT\u7684vannevar bush\u767c\u660e
1989,CERN(\u6b50\u6d32\u6838\u5b50\u7814\u7a76\u91cd\u93ae)\u7269\u7406\u5b78\u5bb6tim berners-lee 3\u6708\u63d0\u51fa,1991.12\u5c55\u793a
1993,2marc andreessen\u767c\u8868\u700f\u89bd\u5668mosaic,\u4e26\u6210\u7acbnetscape communication
1994,CERN\u548cMIT\u6210\u7acb\u5168\u7403\u8cc7\u8a0a\u7db2\u806f\u76dfworld wide web consortium(www.w3.org)
1998,netscape\u88abammerica online\u8cb7\u4e0b<\/p>\n\n\n\n

http(hypertext transfer protocol,<\/strong>\u8d85\u6587\u4ef6\u50b3\u8f38\u5354\u5b9a)<\/strong>
www\u63a1\u7528\u7684\u5354\u5b9a,\u7531rfc2616\u898f\u7bc4
http\u9001\u51fa\u7684\u8981\u6c42\u662fascii\u6587\u5b57\u7de8\u8f2f\u800c\u6210\u7684,\u4e26\u63d0\u4f9b\u56db\u500b\u57fa\u672c\u529f\u80fd(GET,HEAD,POST,PUT)
http1.0,\u9023\u5b8c\u5c31\u91cb\u653e
http1.1,\u652f\u63f4persistent connection(\u6c38\u4e45\u6027\u9023\u7d50),\u53ef\u9023\u7e8c\u50b3\u9001\u591a\u8981\u6c42
https,\u5b89\u5168\u7684http\u50b3\u8f38\u529f\u80fd
http-ng:\u4e0b\u4e00\u4ee3\u7248\u672c,\u4f7f\u7528\u4e8c\u9032\u4f4d\u4f86\u5c0d\u8868\u982d\u505a\u7de8\u78bc\u800c\u4e0d\u7528\u73fe\u5b58\u7684ascii\u6a21\u5f0f
Helper Application:\u700f\u89bd\u5668\u7aef\u7684\u8f14\u52a9\u7a0b\u5f0f<\/p>\n\n\n\n

HTTP method
<\/strong>\u64cd\u4f5c\u6307\u5b9a\u8cc7\u6e90\u76848\u500b\u52d5\u4f5c
OPTIONS\uff1a\u8981\u6c42web\u50b3\u56de\u8a72\u8cc7\u6e90\u6240\u652f\u63f4\u7684\u6240\u6709HTTP\u8acb\u6c42\u65b9\u6cd5,\u5e38\u7528\u4f86\u6e2c\u8a66web\u529f\u80fd\u662f\u5426\u6b63\u5e38\u904b\u4f5c
HEAD\uff1a\u5411web\u8981\u6c42\u7279\u5b9a\u8cc7\u6e90\u7684head(\u5b58\u653e\u8cc7\u6e90\u7684\u8cc7\u8a0a)
GET\uff1a\u5411web\u8981\u6c42\u7279\u5b9a\u8cc7\u6e90
POST\uff1a\u5c07\u8cc7\u6599\u9001\u5230web,\u5e38\u7528\u5728\u9001\u51fa\u8868\u55ae\u6216\u8005\u4e0a\u50b3\u6a94\u6848
PUT\uff1a\u4e0a\u50b3\u66f4\u65b0\u5167\u5bb9\u5230web
DELETE\uff1a\u8981\u6c42web\u522a\u9664Request-URI\u6240\u6a19\u8b58\u7684\u8cc7\u6e90
TRACE\uff1a\u56de\u8986web\u6536\u5230\u7684\u8acb\u6c42,\u4e3b\u8981\u7528\u65bc\u6e2c\u8a66
CONNECT\uff1aHTTP\/1.1\u9810\u7559\u7d66\u7ba1\u9053\u65b9\u5f0f\u7684Proxy,\u5e38\u7528\u65bcSSL<\/p>\n\n\n\n

web status code(\u72c0\u614b\u78bc)<\/strong>
1xx\u8cc7\u8a0a,100\u540c\u610f\u8655\u7406\u7528\u6236\u7aef\u8981\u6c42
2xx\u6210\u529f,200\u8981\u6c42\u6210\u529f,204\u7121\u5167\u5bb9\u5b58\u5728
3xx\u91cd\u5c0e,301\u7db2\u9801\u79fb\u52d5,304\u5feb\u53d6\u7db2\u9801\u6709\u6548
4xx\u7528\u6236\u7aef\u932f\u8aa4,403\u7981\u6b62\u5b58\u53d6,404\u7db2\u9801\u627e\u4e0d\u5230
5xx\u4f3a\u670d\u7aef\u932f\u8aa4,500\u4f3a\u670d\u5668\u5167\u90e8\u932f\u8aa4,503\u7a0d\u5f8c\u5728\u8a66
refer
http:\/\/www.w3.org\/Protocols\/rfc2616\/rfc2616-sec10.html  <\/p>\n\n\n\n

…<\/p>\n\n\n\n

HTTP1.1 persistent connection\/HTTP1.0 keep-alive\/HTTP connection reuse<\/strong>
\u91cd\u8907\u4f7f\u7528TCP connections,\u4ee5\u964d\u4f4enew connection\u5efa\u7acb\u548c\u95dc\u9589\u800c\u9020\u6210delay\u7684\u4e00\u7a2e\u6280\u8853
\u7121\u6b64\u6a21\u5f0f\u65f6(\u4e00\u822c\u7684request\/response\u6a21\u5f0f),clinet\u5c0dserver\u7684\u6bcf\u500brequest\/response\u90fd\u8981\u65b0\u5efa\u4e00\u4e2aconection,
\u5b8c\u6210\u5f8c\u6703\u4e2d\u65b7connection(http procotol\u70baStateless protocol,\u4ee3\u8868client\u548cserver\u4e4b\u9593\u4e0d\u6703\u8a18\u5f97\u5148\u524d\u7684\u72c0\u614b) \u3000
ps:
http 1.0\u7121\u6b64\u529f\u80fd,\u4f46\u4f7f\u7528HTTP\/1.0+(HTTP 1.0\u4e4b\u5f8c\u7684\u64f4\u5145),
\u53ef\u5728header\u4e2d\u555f\u7528Connection:Keep-Alive\u7684\u65b9\u6cd5\u652f\u63f4\u6b64\u529f\u80fd.
http 1.1\u5c071.0\u7684Keep-Alive\u5b9a\u7fa9\u70bapersistent connection.
ps:
\u76f4\u52302015\u5e74\uff0c\u591a\u6578browser\u9810\u8a2d\u4f7f\u7528http1.1 persistent connection,
\u4e0d\u904e\u6bcf\u500bbrowser\u5c0dweb\u6709\u4e0d\u540c\u7684persistent connection\u6578\u91cf\u9650\u5236.
client\u548cserver\u7aef\u90fd\u8981\u540c\u6642\u4f7f\u7528\u6b64\u529f\u80fd\u624d\u6703\u6709\u4f5c\u7528,
\u800cserver\u4e0d\u4e00\u5b9a\u6703\u555f\u7528keep alive\u529f\u80fd,ex:apache\u90e8\u4efd\u7248\u672c\u9810\u8a2d\u5c07\u6b64\u529f\u80fd\u95dc\u9589.
refer
https:\/\/www.byvoid.com\/blog\/http-keep-alive-header<\/p>\n\n\n\n


HTTP 1.1\u7684Pipelined Connections<\/strong>
\u5728\u4e00\u500btcp connection\u4e2d\u540c\u6b65\u767c\u9001\u591a\u500bHTTP requests\u7684\u6280\u8853\uff0c\u5728high-latency\u7684\u7db2\u8def\u74b0\u5883\u4e2d\u53ef\u6539\u5584\u6548\u80fd.
refer
http 1.1 pipeline\u5931\u6557\u7684\u539f\u56e0
http:\/\/fcamel-life.blogspot.tw\/2015\/08\/http-11-pipeline.html<\/p>\n\n\n\n

… <\/p>\n\n\n\n

web\u6548\u80fd\u589e\u52a0
<\/strong>\u65b9\u6cd5\u6709:
1\u5e38\u7528\u6a94\u653e\u8a18\u61b6\u9ad4\u505a\u5feb\u53d6,\u4fbf\u53ef\u76f4\u63a5\u5f9e\u8a18\u61b6\u4f53\u53d6\u51fa,\u907f\u514d\u5b58\u53d6\u78c1\u789f
2\u4f3a\u670d\u5668\u4ee5multithreaded(\u591a\u7dd2\u7a0b)\u904b\u4f5c,\u8ca0\u8cac\u50b3\u5165\u8981\u6c42\u7684\u524d\u7aef\u6a21\u7d44+\u4e00\u7fa4processing module(\u8655\u7406\u6a21\u7d44)
3\u4f3a\u670d\u5668\u4ee5multithreaded(\u591a\u7dd2\u7a0b)\u904b\u4f5c,\u7121\u524d\u7aef,\u6bcf\u500b\u8655\u7406\u6a21\u7d44\u8a66\u5716\u53d6\u5f97\u81ea\u5df1\u8981\u6c42,\u9808\u7528locking protocol(\u9396\u5b9a\u5354\u5b9a)
4\u4f7f\u7528\u591a\u8655\u7406\u6a21\u7d44+\u591a\u78c1\u789f\u540c\u6642\u904b\u4f5c,\u4f46\u7a0b\u5f0f\u548c\u7ba1\u7406\u8907\u96dc
5\u4f3a\u670d\u5668\u7fa4\u6a21\u5f0f(\u8ca0\u8f09\u5e73\u8861\u6280\u8853),\u589e\u52a0\u66f4\u591a\u7bc0\u9ede,\u642d\u914dreplicated disk(\u8907\u88fd\u78c1\u789f),\u6bcf\u500b\u7bc0\u9ede\u4e5f\u53ef\u7528\u591a\u91cd\u7dd2\u7a0b
 \u554f\u984c\uff1a\u7121\u5171\u4eabcache,\u9700\u7528tcp\u4ea4\u905e(tcp handoff)\u5c07tcp\u7d42\u9ede\u4ea4\u7d66\u7bc0\u9ede\u4ee5\u4fbf\u76f4\u63a5\u56de\u8986client

web\u6536\u5230\u7528\u6236\u7aef\u8981\u6c42\u7684\u8655\u7406\u9806\u5e8f<\/strong>
1\u89e3\u6790\u8981\u6c42\u7684\u540d\u7a31
2\u8a8d\u8b49(\u7528\u6236\u7aef)
3\u5b58\u53d6\u63a7\u5236(\u7528\u6236\u7aef)
4\u5b58\u53d6\u63a7\u5236(\u7db2\u9801)
5\u6aa2\u67e5cache
6\u5f9edisk\u53d6\u8cc7\u6599
7\u5224\u65b7MIME\u578b\u614b\u4ee5\u52a0\u5165\u56de\u8986\u4e2d
8\u8655\u7406\u96dc\u52d9
9\u56de\u8986
10\u4f3a\u670d\u5668\u7d00\u9304log<\/p>\n\n\n\n

 <\/p>\n\n\n\n

URL(uniform resource locator,\u5168\u7403\u8cc7\u6e90\u5b9a\u4f4d\u5668)<\/strong>
\u7528\u4f86\u78ba\u5b9a\u662f\u90a3\u500b\u8cc7\u6e90,\u4e26\u8868\u793a\u51fa\u4f4d\u7f6e
\u683c\u5f0f\u70ba:\u5354\u5b9a(\u65b9\u6cd5)+dns\u540d\u7a31(+:port,ex”:80″)(+”\/\u7db2\u9801\u540d\u7a31”)
http:\/\/  web\u7db2\u9801
ftp:\/\/  \u6a94\u6848\u50b3\u8f38
file:\/\/ \u672c\u5730\u6a94\u6848
telnet:\/\/ \u9060\u7aef\u767b\u5165
gopher:\/\/\u7528\u65bcgopher(\u53ea\u652f\u63f4\u6587\u5b57\u7684\u641c\u5c0b\u6a5f\u5236)
news: \u65b0\u805e\u7fa4\u7d44 ex:news:comp.os.minix
news. \u65b0\u805e\u6587\u7ae0 ex:123@cs.utah.edu
mailto: \u9001\u90f5\u4ef6 ex:mailto:atcg@pie.com.tw

cookie<\/strong>
\u7531netscape\u8a2d\u8a08,\u5b9a\u7fa9\u5728RFC2109
\u67d0\u4e9b\u7db2\u7ad9\u70ba\u4e86\u8fa8\u5225\u7528\u6236\u8eab\u4efd\u800c\u5132\u5b58\u5728\u7528\u6236\u672c\u5730\u7d42\u7aef\u4e0a\u7684\u6578\u64da
\u4e3b\u8981\u5132\u5b58\u4ee5\u4e0b\u8cc7\u6599:
\u3000\u7db2\u57df\uff1a\u8868cookie\u4f86\u81ea\u4f55\u8655
\u3000\u8def\u5f91\uff1a\u8868\u90a3\u500b\u76ee\u9304\u53ef\u4ee5\u4f7f\u7528cookie
\u3000\u5167\u5bb9\uff1aname=value\u683c\u5f0f
\u3000\u903e\u671f\uff1a\u7a7a\u767d\u5247\u4e0d\u7d00\u9304\u7a31\u975e\u6c38\u4e45\u6027cookie,\u82e5\u7121\u7a7a\u767d\u5247\u4fdd\u5b58\u5230\u903e\u6642\u70ba\u6b62
\u3000\u5b89\u5168\u6027\uff1a\u53ea\u53ef\u56de\u7d66\u5b89\u5168\u4f3a\u670d\u5668<\/p>\n\n\n\n

……………………………………………<\/p>\n\n\n\n

SGML<\/strong>(Standard Generalized Markup Language,\u6a19\u6e96\u901a\u7528\u6a19\u793a\u8a9e\u8a00)
\u3000html\u524d\u8eab
HTML(hyptertext markup language,\u8d85\u6587\u4ef6\u6a19\u8a18\u8a9e\u8a00)
\u3000\u4ee5iso 8859-1 latin-1\u5b57\u5143\u96c6\u5beb\u6210
\u3000\u7279\u6b8a\u5b57\u5143\u7686\u4ee5&\u958b\u982d\u5206\u865f\u7d50\u5c3e
\u3000\u4e0d\u63d0\u4f9b\u4efb\u4f55\u7db2\u9801\u7d50\u69cb
XML<\/strong>(extensible markup language,\u5ef6\u4f38\u6a19\u8a18\u8a9e\u8a00)
\u3000\u4ee5\u4e00\u7a2e\u7d50\u69cb\u5316\u65b9\u5f0f\u63cf\u8ff0\u7db2\u9801\u5167\u5bb9
\u3000\u662f\u4e00\u5957\u539f\u5247\uff0c\u53ef\u8b93\u5404\u884c\u5404\u696d\u81ea\u884c\u5b9a\u7fa9\u5982 HTML \u822c\u7684\u6a19\u6ce8\u8a9e\uff0c\u65b9\u4fbf\u8cc7\u6599\u5b58\u53d6\u3001\u8655\u7406\u3001\u4ea4\u63db\uff0c\u8f49\u63db\u7b49
\u3000\u672a\u4f86\u53ef\u76f4\u63a5\u5728\u8cc7\u6599\u5eab\u4e2d\u5c31\u5b58\u5165XML\u6587\u4ef6
WML<\/strong>(Wireless Makeup language,\u7121\u7dda\u6ce8\u6a19\u8a9e\u8a00)
\u3000\u652f\u63f4WAP\u6280\u8853\u7684\u624b\u6a5f\u80fd\u700f\u89bd\u7531WML\u63cf\u8ff0\u7684Internet\u5167\u5bb9
\u3000WML\u662f\u4ee5XML\u70ba\u57fa\u790e\u7684\u6a19\u8a18\u8a9e\u8a00\uff0c\u7528\u5728\u898f\u7bc4\u7a84\u983b\u8a2d\u5099\uff0c\u5982\u624b\u6a5f\u3001\u547c\u53eb\u5668\u7b49\u5982\u4f55\u986f\u793a\u5167\u5bb9\u548c\u4f7f\u7528\u8005\u4ecb\u9762\u7684\u8a9e\u8a00
XSL<\/strong>(extensible style language,\u5ef6\u4f38\u683c\u5f0f\u8a9e\u8a00)
\u3000\u4ee5\u7368\u7acb\u65bc\u5167\u5bb9\u7684\u65b9\u5f0f\u5b9a\u7fa9\u683c\u5f0f
XHTML<\/strong>(extensible hypertext markup language,\u5ef6\u4f38\u8d85\u6587\u4ef6\u6a19\u8a18\u8a9e\u8a00)
\u3000html4\u4ee5xml\u91cd\u65b0\u6539\u9020
\u3000\u65b0\u7684web\u6a19\u6e96,\u61c9\u7528\u65bc\u65b0\u5f0f\u7db2\u9801,\u4ee5\u5f97\u5230\u8de8\u5e73\u53f0\u53ca\u700f\u89bd\u5668\u7684\u6700\u5927\u53ef\u651c\u6027

DHTML<\/strong>(\u4f3a\u670d\u5668\u52d5\u614b\u7db2\u9801\u7522\u751f\u6a5f\u5236)
\u7121\u6cd5\u505a\u5230\u8207\u6ed1\u5c6c\u548c\u4f7f\u7528\u8005\u76f4\u63a5\u4e92\u52d5
CGI(common gateway interface,\u5171\u540c\u9598\u9053\u754c\u9762),\u5f8c\u7aef\u901a\u5e38\u4ee5perl\u63cf\u8ff0\u8a9e\u8a00\u6216python\u5beb,\u4e26\u653e\u5728cgi-bin\u76ee\u9304\u4e0b
PHP hypertext preprocessor(\u8d85\u6587\u4ef6\u524d\u8655\u7406\u5668)
JSP(javaserver pages,java\u4f3a\u670d\u5668\u9801\u9762)
  Servlet:\u7528Java\u8a9e\u8a00\u4f86\u958b\u767c\u7db2\u8def\u61c9\u7528\u7a0b\u5f0f\u7684\u4e00\u7a2e\u6280\u8853
  JDBC,Java Database Connectivity:\u8207SQL\u8cc7\u6599\u5eab\u7cfb\u7d71\u4e92\u52d5\u7684API
ASP(active server pages,\u4e3b\u52d5\u5f0f\u4f3a\u670d\u5668\u9801\u9762),\u63a1\u5fae\u8edf\u5c08\u5c6c\u7684\u63cf\u8ff0\u8a9e\u8a00visual basic script\u4f86\u7522\u751f\u52d5\u614b\u5167\u5bb9

\u7528\u6236\u7aef\u52d5\u614b\u7db2\u9801\u7522\u751f\u6a5f\u5236<\/strong>
javascript\u63cf\u8ff0\u8a9e\u8a00,\u5177c\u6216java\u7684\u5b8c\u6574\u529f\u80fd,\u5bb9\u6613\u64b0\u5beb
applet,\u88abjvm\u7684\u865b\u64ec\u96fb\u8166\u7de8\u8b6f\u6210\u6a5f\u5668\u6307\u4ee4\u7684\u5c0f\u578bjava\u7a0b\u5f0f,\u53ef\u651c\u6027\u9ad8
activeX control,\u7de8\u8b6f\u6210pentium\u6a5f\u5668\u8a9e\u8a00\u7684\u7a0b\u5f0f,\u4e26\u5b8c\u5168\u5728\u786c\u9ad4\u4e0a\u57f7\u884c,\u901f\u5ea6\u6700\u5feb<\/p>\n\n\n\n

……………………………………………<\/p>\n\n\n\n

WAP<\/strong>(wireless application protocol,\u7121\u7dda\u61c9\u7528\u5354\u5b9a)
1.0\u8cc7\u6599\u901f\u73879600bps,\u5c08\u9580\u91dd\u5c0d\u5229\u7528cpu\u8f03\u6162,\u8a18\u61b6\u9ad4\u8f03\u5c0f,\u5c0f\u87a2\u5e55\u7121\u7dda\u8a2d\u5099,\u5728\u4f4e\u983b\u9023\u7d50\u4e88\u4ee5\u6700\u4f73\u5316
\u7528\u4f86\u5b58\u53d6web\u5354\u5b9a\u5806\u758a
\u3000WAE(wireless application environment,\u7121\u7dda\u61c9\u7528\u74b0\u5883),\u4f7f\u7528WML(wireless markup language,\u7121\u7dda\u6a19\u8a18\u8a9e\u8a00)
\u3000WSP(wireless session protocol,\u7121\u7dda\u8b70\u7a0b\u5354\u5b9a)
\u3000WTP(wireless transaction protocol,\u7121\u7dda\u4ea4\u6613\u5354\u5b9a)
\u3000WTLS(wireless transport layer security,\u7121\u7dda\u50b3\u8f38\u5c64\u5b89\u5168)
\u3000WDP(wireless datagram protocol,\u7121\u7dda\u8cc7\u6599\u6bb5\u5354\u5b9a)
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