tcp获取网站数据 ~~~ package main import ( "fmt" "io" "net" ) func main() { conn, err := net.Dial("tcp", "www.baidu.com:80") if err != nil { fmt.Println("Error dialing", err.Error()) return } defer conn.Close() msg := "GET / HTTP/1.1\r\n" msg += "Host:www.baidu.com\r\n" msg += "Connection:keep-alive\r\n" //msg += "User-Agent:Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36\r\n" msg += "\r\n\r\n" //io.WriteString(os.Stdout, msg) n, err := io.WriteString(conn, msg) if err != nil { fmt.Println("write string failed, ", err) return } fmt.Println("send to baidu.com bytes:", n) buf := make([]byte, 4096) for { count, err := conn.Read(buf) fmt.Println("count:", count, "err:", err) if err != nil { break } fmt.Println(string(buf[0:count])) } } ~~~ 运行结果: ~~~ $ go run main.go send to baidu.com bytes: 63 count: 3054 err: <nil> HTTP/1.1 200 OK Date: Thu, 22 Mar 2018 09:26:58 GMT Content-Type: text/html Content-Length: 14615 Last-Modified: Tue, 20 Mar 2018 02:53:00 GMT Connection: Keep-Alive Vary: Accept-Encoding Set-Cookie: BAIDUID=BFCA28D8B6D8FA0920CE394CC3502EA9:FG=1; expires=Thu, 31-Dec-37 23:55:55 GMT; max-age=2147483647; path=/; domain=.baidu.com Set-Cookie: BIDUPSID=BFCA28D8B6D8FA0920CE394CC3502EA9; expires=Thu, 31-Dec-37 23:55:55 GMT; max-age=2147483647; path=/; domain=.baidu.com Set-Cookie: PSTM=1521710818; expires=Thu, 31-Dec-37 23:55:55 GMT; max-age=2147483647; path=/; domain=.baidu.com P3P: CP=" OTI DSP COR IVA OUR IND COM " Server: BWS/1.1 X-UA-Compatible: IE=Edge,chrome=1 Pragma: no-cache Cache-control: no-cache Accept-Ranges: bytes <!DOCTYPE html><!--STATUS OK--> <html> <head> <meta http-equiv="content-type" content="text/html;charset=utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=Edge"> <link rel="dns-prefetch" href="//s1.bdstatic.com"/> <link rel="dns-prefetch" href="//t1.baidu.com"/> <link rel="dns-prefetch" href="//t2.baidu.com"/> <link rel="dns-prefetch" href="//t3.baidu.com"/> <link rel="dns-prefetch" href="//t10.baidu.com"/> <link rel="dns-prefetch" href="//t11.baidu.com"/> <link rel="dns-prefetch" href="//t12.baidu.com"/> <link rel="dns-prefetch" href="//b1.bdstatic.com"/> <title>百度一下,你就知道</title> <link href="http://s1.bdstatic.com/r/www/cache/static/home/css/index.css" rel="stylesheet" type="text/css" /> <!--[if lte IE 8]><style index="index" >#content{height:480px\9}#m{top:260px\9}</style><![endif]--> <!--[if IE 8]><style index="index" >#u1 a.mnav,#u1 a.mnav:visited{font-family:simsun}</style><![endif]--> <script>var hashMatch = document.location.href.match(/#+(.*wd=[^&].+)/);if (hashMatch && hashMatch[0] && hashMatch[1]) {document.location.replace("http://"+location.host+"/s?"+hashMatch[1]);}var ns_c = function(){};</script> <script>function h(obj){obj.style.behavior='url(#default#homepage)';var a = obj.setHomePage('//www.baidu.com/');}</script> <noscript><meta http-equiv="refresh" content="0; url=/baidu.html?from=noscript"/></noscript> <script>window._ASYNC_START=new Date().getTime();</script> </head> <body link="#0000cc"><div id="wrapper" style="display:none;"><div id="u"><a href="//www.baidu.com/gaoji/preferences.html" onmousedown="return user_c({'fm':'set','tab':'setting','login':'0'})">搜索设置</a>|<a id="btop" href="/" onmousedown="return user_c({'fm':'set','tab':'index','login':'0'})">百度首页</a>|<a id="lb" href="https://passport.baidu.com/v2/?login&tpl=mn&u=http%3A%2F%2Fwww.baidu.com%2F" onclick="return false;" onmousedown="return user_c({'fm':'set','tab':'login'})">登录</a><a href="https://passport.baidu.com/v2/?reg&regType=1&tpl=mn&u=http%3A%2F%2Fwww.baidu.com%2F" onmousedown="return user_c({'fm':'set','tab':'reg'})" target="_blank" class="reg">注册</a></div><div id="head"><div class="s_nav"><a href="/" class="s_logo" onmousedown="return c({'fm':'tab','tab':'logo'})"><img src="//www.baidu. count: 3456 err: <nil> com/img/baidu_jgylogo3.gif" width="117" height="38" border="0" alt="到百度首页" title="到百度首页"></a><div class="s_tab" id="s_tab"><a href="http://news.baidu.com/ns?cl=2&rn=20&tn=news&word=" wdfield="word" onmousedown="return c({'fm':'tab','tab':'news'})">新闻</a>&#12288;<b>网页</b>&#12288;<a href="http://tieba.baidu.com/f?kw=&fr=wwwt" wdfield="kw" onmousedown="return c({'fm':'tab','tab':'tieba'})">贴吧</a>&#12288;<a href="http://zhidao.baidu.com/q?ct=17&pn=0&tn=ikaslist&rn=10&word=&fr=wwwt" wdfield="word" onmousedown="return c({'fm':'tab','tab':'zhidao'})">知道</a>&#12288;<a href="http://music.baidu.com/search?fr=ps&key=" wdfield="key" onmousedown="return c({'fm':'tab','tab':'music'})">音乐</a>&#12288;<a href="http://image.baidu.com/i?tn=baiduimage&ps=1&ct=201326592&lm=-1&cl=2&nc=1&word=" wdfield="word" onmousedown="return c({'fm':'tab','tab':'pic'})">图片</a>&#12288;<a href="http://v.baidu.com/v?ct=301989888&rn=20&pn=0&db=0&s=25&word=" wdfield="word" onmousedown="return c({'fm':'tab','tab':'video'})">视频</a>&#12288;<a href="http://map.baidu.com/m?word=&fr=ps01000" wdfield="word" onmousedown="return c({'fm':'tab','tab':'map'})">地图</a>&#12288;<a href="http://wenku.baidu.com/search?word=&lm=0&od=0" wdfield="word" onmousedown="return c({'fm':'tab','tab':'wenku'})">文库</a>&#12288;<a href="//www.baidu.com/more/" onmousedown="return c({'fm':'tab','tab':'more'})">更多»</a></div></div><form id="form" name="f" action="/s" class="fm" ><input type="hidden" name="ie" value="utf-8"><input type="hidden" name="f" value="8"><input type="hidden" name="rsv_bp" value="1"><span class="bg s_ipt_wr"><input name="wd" id="kw" class="s_ipt" value="" maxlength="100"></span><span class="bg s_btn_wr"><input type="submit" id="su" value="百度一下" class="bg s_btn" onmousedown="this.className='bg s_btn s_btn_h'" onmouseout="this.className='bg s_btn'"></span><span class="tools"><span id="mHolder"><div id="mCon"><span>输入法</span></div><ul id="mMenu"><li><a href="javascript:;" name="ime_hw">手写</a></li><li><a href="javascript:;" name="ime_py">拼音</a></li><li class="ln"></li><li><a href="javascript:;" 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height="129"></p><p id="nv"><a href="http://news.baidu.com">新&nbsp;闻</a> <b>网&nbsp;页</b> <a href="http://tieba.baidu.com">贴&nbsp;吧</a> <a href="http://zhidao.baidu.com">知&nbsp;道</a> <a href="http://music. count: 4096 err: <nil> baidu.com">音&nbsp;乐</a> <a href="http://image.baidu.com">图&nbsp;片</a> <a href="http://v.baidu.com">视&nbsp;频</a> <a href="http://map.baidu.com">地&nbsp;图</a></p><div id="fm"><form id="form1" name="f1" action="/s" class="fm"><span class="bg s_ipt_wr"><input type="text" name="wd" id="kw1" maxlength="100" class="s_ipt"></span><input type="hidden" name="rsv_bp" value="0"><input type=hidden name=ch value=""><input type=hidden name=tn value="baidu"><input type=hidden name=bar value=""><input type="hidden" name="rsv_spt" value="3"><input type="hidden" name="ie" value="utf-8"><span class="bg s_btn_wr"><input type="submit" value="百度一下" id="su1" class="bg s_btn" onmousedown="this.className='bg s_btn s_btn_h'" onmouseout="this.className='bg s_btn'"></span></form><span class="tools"><span id="mHolder1"><div id="mCon1"><span>输入法</span></div></span></span><ul id="mMenu1"><div class="mMenu1-tip-arrow"><em></em><ins></ins></div><li><a href="javascript:;" name="ime_hw">手写</a></li><li><a href="javascript:;" name="ime_py">拼音</a></li><li class="ln"></li><li><a href="javascript:;" name="ime_cl">关闭</a></li></ul></div><p id="lk"><a href="http://baike.baidu.com">百科</a> <a href="http://wenku.baidu.com">文库</a> <a href="http://www.hao123.com">hao123</a><span>&nbsp;|&nbsp;<a href="//www.baidu.com/more/">更多&gt;&gt;</a></span></p><p id="lm"></p></div></div><div id="ftCon"><div id="ftConw"><p id="lh"><a id="seth" onClick="h(this)" href="/" onmousedown="return ns_c({'fm':'behs','tab':'homepage','pos':0})">把百度设为主页</a><a id="setf" href="//www.baidu.com/cache/sethelp/index.html" onmousedown="return ns_c({'fm':'behs','tab':'favorites','pos':0})" target="_blank">把百度设为主页</a><a onmousedown="return ns_c({'fm':'behs','tab':'tj_about'})" href="http://home.baidu.com">关于百度</a><a 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