由于工作原因，需要每隔半小时刷新一些网页，并查看上面的数据是否有更新。这件事能否自动化进行呢？查找了下java相关的资料，蹦出一个关键词：HttpClient。
HttpClient是常用Http客户端库，相关的资料也不少，只是网上找到的资料好多都是不能用于4.5版的HttpClient，还是需要自己摸索。
在eclipse里新建一个maven工程(maven 3)，在pom.xml中做如下设置：
1 <PRoject xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 2 <modelVersion>4.0.0</modelVersion> 3 <groupId>test</groupId> 4 <artifactId>admin.test.httpclient</artifactId> 5 <version>0.0.1-SNAPSHOT</version> 6 <dependencies> 7 <dependency> 8 <groupId>org.apache.httpcomponents</groupId> 9 <artifactId>httpclient</artifactId>10 <version>4.5</version>11 </dependency>17 </dependencies>18 <build>19 <finalName>MvnTest</finalName>20 <plugins>21 <plugin>22 <artifactId>maven-compiler-plugin</artifactId>23 <version>2.0.2</version>24 <configuration>25 <source>1.5</source>26 <target>1.5</target>27 </configuration>28 </plugin>29 </plugins>30 </build>31 </project>
在pom.xml上运行"maven install"命令完成之后，在“Maven Dependencies”下有了四个jar包：
拿某个知名网站发送GET请求做测试，看看效果：
1 public class HttpClientTest { 2 private static String HOST = "www.sina.com"; 3 private static String BASE_URL = "http://"+HOST+"/"; 4 public static void main(String[] args) throws ClientProtocolException, IOException 5 CloseableHttpClient httpClient = HttpClients.createDefault(); 6 /// 设置GET请求参数，URL一定要以"http://"开头 7 HttpGet getReq = new HttpGet(BASE_URL); 8 /// 设置请求报头，模拟Chrome浏览器 9 getReq.addHeader("Accept", "application/json, text/Javascript, */*; q=0.01");10 getReq.addHeader("Accept-Encoding", "gzip,deflate,sdch");11 getReq.addHeader("Accept-Language", "zh-CN,zh;q=0.8");12 getReq.addHeader("Content-Type", "text/html; charset=UTF-8");13 getReq.addHeader("Host", HOST);14 getReq.addHeader("User-Agent", "Mozilla/5.0 (Windows NT 5.2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1700.76 Safari/537.36");15 /// 发送GET请求16 CloseableHttpResponse rep = httpClient.execute(getReq);17 /// 从HTTP响应中取出页面内容18 HttpEntity repEntity = rep.getEntity();19 String content = EntityUtils.toString(repEntity);20 /// 打印出页面的内容：21 System.out.println(content);22 /// 关闭连接23 rep.close();24 httpClient.close();25 }26 }得到的页面内容：
1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 2 <!--[5019,2,1] published at 2015-01-01 14:46:19 from #110 by 22--> 3 <html xmlns="http://www.w3.org/1999/xhtml"> 4 <head> 5 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 6 <title>WWW.SINA.COM</title> 7 <meta name="keyWords" content="sina, ??°???" /> 8 <meta name="description" content="??°???é??é??" /> 9 10 <style type="text/CSS"> 11 <!-- 12 /* basic setup */ 13 body, div, dl, dt, dd, ul, ol, li, h1, h2, h3, h4, h5, h6, form, fieldset, legend, input, textarea, p, blockquote, th, td {margin: 0; padding: 0;} 14 body {background: #ebebed url(http://ui.sina.com/assets/img/www/bg_gradient.gif) repeat-x; font-family: Arial, Helvetica, sans-serif; min-height: 100%;} 15 img {border: 0;} 16 em {position: absolute; left: -9999em;} 17 .clearDiv {clear: both;} 18 #wrap { padding: 50px 0 10px;margin:0 auto; width: 775px} 19 20 /* Header */ 21 #header {position: relative; margin: 0 auto; width: 775px; border-bottom: 1px solid #ffa600;} 22 #header h1 {float: left; margin: 0; width: 275px; height: 50px; background: url(http://ui.sina.com/assets/img/www/sina_id_www.gif) no-repeat top left;} 23 #header ul {float: left; margin: 0; width: 500px; height: 50px; list-style: none; font-size: 12px; color: #333; text-transform: capitalize;} 24 #header ul li {float: right; margin: 30px 0 0 0;} 25 #header ul li a {color: #333; text-decoration: none;} 26 #header ul li a:hover {color: #ff9900; text-decoration: none;} 27 28 #map {position: relative; margin: 0; width: 775px; height: 248px;} 29 30 #channel {position: relative; margin: 0; width: 775px; border-bottom: 1px solid #ffa600;} 31 32 /* Footer */ 33 #footer {position: relative; margin: 0 auto; width: 775px; border-top: 1px solid #ffa600;} 34 #footer ul {margin: 10px auto; padding: 0; width: 775px; list-style: none; font-size: 12px; color: #333; text-transform: capitalize; text-align: center;} 35 #footer ul li {display: inline; padding: 2px 5px;} 36 #footer ul li a {color: #333; text-decoration: none;} 37 #footer ul li a:hover {color: #ff9900; text-decoration: none;} 38 39 /* ads */ 40 #ads {position: relative; margin: 5px 0; padding: 0; width: 775px;} 41 #ads ul {margin: 5px 0; width: 775px; list-style: none; text-align: center;} 42 #ads ul li.bnr728 {margin: 5px auto; padding: 0; width: 775px; height: 90px;} 43 #ads ul li.bnr545 {float: left; margin: 5px auto; padding: 0; width: 620px; height: 80px;} 44 #ads ul li.bnr120 {float: left; margin: 5px auto; padding: 0; width: 155px; height: 60px; line-height: 60px;} 45 #ads ul li.bnr120_2 {float: left; margin: 5px auto; padding: 0; width: 155px; height: 80px; line-height: 80px;} 46 47 --> 48 </style> 49 50 <!-- swfObject --> 51 <script type="text/javascript" src="http://ui.sina.com/assets/js/swfobject.js"></script> 52 53 <!-- btn.5 --> 54 <script type="text/javascript"> 55 var Flashvars = {}; 56 var params = {}; 57 params.base = ""; 58 params.menu = "true"; 59 params.scale = "noscale"; 60 params.bgcolor = "#fff"; 61 params.quality = "best"; 62 // params.allowfullscreen = "true"; 63 params.salign = "c"; 64 params.wmode = "window"; 65 var attributes = {}; 66 swfobject.embedSWF("http://ui.sina.com/rm/toyota/091110/toyota_120x60_4_091110.swf", "btn5", "120", "60", "9.0.0", "expressInstall.swf", flashvars, params, attributes); 67 68 </script> 69 <!-- END --> 70 71 </head> 72 <body> 73 74 <!-- SUDA_CODE_START --> 75 <div style='position:absolute;top:0;left:0;width:0;height:0;z-index:1'><div style='position:absolute;top:0;left:0;width:1;height:1;'><iframe id='SUDA_FC' src='' width=1 height=1 SCROLLING=NO FRAMEBORDER=0></iframe></div><div style='position:absolute;top:0;left:0;width:0;height:0;visibility:hidden' id='SUDA_CS_DIV'></div></div> 76 <script type="text/javascript"> 77 //<!-- 78 var SSL={Config:{},Space:function(d){var b=d,c=null;b=b.split(".");c=SSL;for(i=0,len=b.length;i<len;i++){c[b[i]]=c[b[i]]||{};c=c[b[i]]}return c}};SSL.Space("Global");SSL.Space("Core.Dom");SSL.Space("Core.Event");SSL.Space("App");SSL.Global={win:window||{},doc:document,nav:navigator,loc:location};SSL.Core.Dom={get:function(a){return document.getElementById(a)}};SSL.Core.Event={on:function(){}};SSL.App={_S_gConType:function(){var a="";try{SSL.Global.doc.body.addBehavior("#default#clientCaps");a=SSL.Global.doc.body.connectionType}catch(b){a="unkown"}return a},_S_gKeyV:function(g,b,d,c){if(g==""){return""}if(c==""){c="="}b=b+c;var f=g.indexOf(b);if(f<0){return""}f=f+b.length;var a=g.indexOf(d,f);if(a<f){a=g.length}return g.substring(f,a)},_S_gUCk:function(a){if((undefined==a)||(""==a)){return""}return SSL.App._S_gKeyV(SSL.Global.doc.cookie,a,";","")},_S_sUCk:function(e,a,b,d){if(a!=null){if((undefined==d)||(null==d)){d="sina.com.cn"}if((undefined==b)||(null==b)||(""==b)){SSL.Global.doc.cookie=e+"="+a+";domain="+d+";path=/"}else{var c=new Date();var f=c.getTime();f=f+86400000*b;c.setTime(f);f=c.getTime();SSL.Global.doc.cookie=e+"="+a+";domain="+d+";expires="+c.toUTCString()+";path=/"}}},_S_gJVer:function(f,b){var e,a,g,c=1,d=0;if("MSIE"==b){a="MSIE";e=f.indexOf(a);if(e>=0){g=parseInt(f.substring(e+5));if(3<=g){c=1.1;if(4<=g){c=1.3}}}}else{if(("Netscape"==b)||("Opera"==b)||("Mozilla"==b)){c=1.3;a="Netscape6";e=f.indexOf(a);if(e>=0){c=1.5}}}return c},_S_gFVer:function(nav){var ua=SSL.Global.nav.userAgent.toLowerCase();var flash_version=0;if(SSL.Global.nav.plugins&&SSL.Global.nav.plugins.length){var p=SSL.Global.nav.plugins["Shockwave Flash"];if(typeof p=="object"){for(var i=10;i>=3;i--){if(p.description&&p.description.indexOf(" "+i+".")!=-1){flash_version=i;break}}}}else{if(ua.indexOf("msie")!=-1&&ua.indexOf("win")!=-1&&parseInt(SSL.Global.nav.appVersion)>=4&&ua.indexOf("16bit")==-1){for(var i=10;i>=2;i--){try{var object=eval("new ActiveXObject('ShockwaveFlash.ShockwaveFlash."+i+"');");if(object){flash_version=i;break}}catch(e){}}}else{if(ua.indexOf("webtv/2.5")!=-1){flash_version=3}else{if(ua.indexOf("webtv")!=-1){flash_version=2}}}}return flash_version},_S_gMeta:function(b,c){var d=SSL.Global.doc.getElementsByName(b);var a=0;if(c>0){a=c}return(d.length>a)?d[a].content:""},_S_Ghost:function(b){var a=new RegExp("^http(?:s)?://([^/]+)","im");if(b.match(a)){return b.match(a)[1].toString()}else{return""}},_S_gTJMTMeta:function(){return SSL.App._S_gMeta("mediaid")},_S_gTJZTMeta:function(){var a=SSL.App._S_gMeta("subjectid");a.replace(",",".");a.replace(";",",");return a},_S_isFreshMeta:function(){return false},_S_isIFrameSelf:function(b,a){if(SSL.Global.win.top==SSL.Global.win){return false}else{try{if(SSL.Global.doc.body.clientHeight==0){return false}if((SSL.Global.doc.body.clientHeight>=b)&&(SSL.Global.doc.body.clientWidth>=a)){return false}else{return true}}catch(c){return true}}},_S_isHome:function(b){var a="";try{SSL.Global.doc.body.addBehavior("#default#homePage");a=SSL.Global.doc.body.isHomePage(b)?"Y":"N"}catch(c){a="unkown"}return a}};function SUDA(I,h,g){var f=SSL.Global,y=SSL.Core.Dom,v=SSL.Core.Event,j=SSL.App;var F="webbug_meta_ref_mod_noiframe_async_fc_:9.12c",k="-9999-0-0-1";var b=f.nav.appName.indexOf("Microsoft Internet Explorer")>-1?"MSIE":f.nav.appName;var u=f.nav.appVersion;var q=f.loc.href.toLowerCase();var z=f.doc.referrer.toLowerCase();var p="";var n="",J="SUP",w="",t="Apache",x="SINAGLOBAL",r="ULV",G="UOR",s="_s_upa",a=320,l=240,H=0,o="",m="",M=0,K=10000,E=0,d="_s_acc";var C=q.indexOf("https")>-1?"https://":"http://",B="beacon.sina.com.cn",D=C+B+"/a.gif",L=C+B+"/e.gif";var e=100,c=2000;var A={_S_gsSID:function(){var N=j._S_gUCk(t);if(""==N){var O=new Date();N=Math.random()*10000000000000+"."+O.getTime();j._S_sUCk(t,N)}return N},_S_sGID:function(N){if(""!=N){j._S_sUCk(x,N,3650)}},_S_gGID:function(){return j._S_gUCk(x)},_S_gsGID:function(){var N=j._S_gUCk(x);if(""==N){N=A._S_gsSID();A._S_sGID(N)}return N},_S_gCid:function(){try{var N=j._S_gMeta("publishid");if(""!=N){var P=N.split(",");if(P.length>0){if(P.length>=3){k="-9999-0-"+P[1]+"-"+P[2]}return P[0]}}else{return"0"}}catch(O){return"0"}},_S_gAEC:function(){return j._S_gUCk(d)},_S_sAEC:function(N){if(""==N){return}var O=A._S_gAEC();if(O.indexOf(N+",")<0){O=O+N+","}j._S_sUCk(d,O,7)},_S_p2Bcn:function(R,Q){var P=new Date();var O=Q+"?"+R+"&gUid_"+P.getTime();var N=new Image();SUDA.img=N;N.src=O},_S_gSUP:function(){if(w!=""){return w}var P=unescape(j._S_gUCk(J));if(P!=""){var O=j._S_gKeyV(P,"ag","&","");var N=j._S_gKeyV(P,"user","&","");var Q=j._S_gKeyV(P,"uid","&","");var S=j._S_gKeyV(P,"sex","&","");var R=j._S_gKeyV(P,"dob","&","");w=O+":"+N+":"+Q+":"+S+":"+R;return w}else{return""}},_S_gsLVisit:function(P){var R=j._S_gUCk(r);var Q=R.split(":");var S="";if(Q.length>=6){if(P!=Q[4]){var O=new Date();var N=new Date(parseInt(Q[0]));Q[1]=parseInt(Q[1])+1;if(O.getMonth()!=N.getMonth()){Q[2]=1}else{Q[2]=parseInt(Q[2])+1}if(((O.getTime()-N.getTime())/86400000)>=7){Q[3]=1}else{if(O.getDay()<N.getDay()){Q[3]=1}else{Q[3]=parseInt(Q[3])+1}}S=Q[0]+":"+Q[1]+":"+Q[2]+":"+Q[3];Q[5]=Q[0];Q[0]=O.getTime();j._S_sUCk(r,Q[0]+":"+Q[1]+":"+Q[2]+":"+Q[3]+":"+P+":"+Q[5],360)}else{S=Q[5]+":"+Q[1]+":"+Q[2]+":"+Q[3]}}else{var O=new Date();S=":1:1:1";j._S_sUCk(r,O.getTime()+S+":"+P+":",360)}return S},_S_gUOR:function(){var N=j._S_gUCk(G);var O=N.split(":");if(O.length>=2){return O[0]}else{return""}},_S_sUOR:function(){var R=j._S_gUCk(G),W="",O="",V="",Q="";var X=/[&|?]c=spr(_[A-Za-z0-9]{1,}){3,}/;var S=new Date();if(q.match(X)){V=q.match(X)[0]}else{if(z.match(X)){V=z.match(X)[0]}}if(V!=""){V=V.substr(3)+":"+S.getTime()}if(R==""){if(j._S_gUCk(r)==""&&j._S_gUCk(r)==""){W=j._S_gHost(z);O=j._S_gHost(q)}j._S_sUCk(G,W+","+O+","+V,365)}else{var T=0,U=R.split(",");if(U.length>=1){W=U[0]}if(U.length>=2){O=U[1]}if(U.length>=3){Q=U[2]}if(V!=""){T=1}else{var P=Q.split(":");if(P.length>=2){var N=new Date(parseInt(P[1]));if(N.getTime()<(S.getTime()-86400000*30)){T=1}}}if(T){j._S_sUCk(G,W+","+O+","+V,365)}}},_S_gRef:function(){var N=/^[^/?&#]*.swf([/?#])?/;if((z=="")||(z.match(N))){var O=j._S_gKeyV(q,"ref","&","");if(O!=""){return O}}return z},_S_MEvent:function(){if(M==0){M++;var O=j._S_gUCk(s);if(O==""){O=0}O++;if(O<K){var N=/[&|?]c=spr(_[A-Za-z0-9]{2,}){3,}/;if(q.match(N)||z.match(N)){O=O+K}}j._S_sUCk(s,O)}},_S_gMET:function(){var N=j._S_gUCk(s);if(N==""){N=0}return N},_S_gCInfo_v2:function(){var N=new Date();return"sz:"+screen.width+"x"+screen.height+"|dp:"+screen.colorDepth+"|ac:"+f.nav.appCodeName+"|an:"+b+"|cpu:"+f.nav.cpuClass+"|pf:"+f.nav.platform+"|jv:"+j._S_gJVer(u,b)+"|ct:"+j._S_gConType()+"|lg:"+f.nav.systemLanguage+"|tz:"+N.getTimezoneOffset()/60+"|fv:"+j._S_gFVer(f.nav)},_S_gPInfo_v2:function(N,O){if((undefined==N)||(""==N)){N=A._S_gCid()+k}return"pid:"+N+"|st:"+A._S_gMET()+"|et:"+E+"|ref:"+escape(O)+"|hp:"+j._S_isHome(q)+"|PGLS:"+j._S_gMeta("stencil")+"|ZT:"+escape(j._S_gTJZTMeta())+"|MT:"+escape(j._S_gTJMTMeta())+"|keys:"},_S_gUInfo_v2:function(N){return"vid:"+N+"|sid:"+A._S_gsSID()+"|lv:"+A._S_gsLVisit(A._S_gsSID())+"|un:"+A._S_gSUP()+"|uo:"+A._S_gUOR()+"|ae:"+A._S_gAEC()},_S_gEXTInfo_v2:function(O,N){o=(undefined==O)?o:O;m=(undefined==N)?m:N;return"ex1:"+o+"|ex2:"+m},_S_pBeacon:function(R,Q,O){try{var T=A._S_gsGID();if(""==T){if(H<1){setTimeout(function(){A._S_pBeacon(R,Q,O)},c);H++;return}else{T=A._S_gsSID();A._S_sGID(T)}}var V="V=2";var S=A._S_gCInfo_v2();var X=A._S_gPInfo_v2(R,A._S_gRef());var P=A._S_gUInfo_v2(T);var N=A._S_gEXTInfo_v2(Q,O);var W=V+"&CI="+S+"&PI="+X+"&UI="+P+"&EX="+N;A._S_p2Bcn(W,D)}catch(U){}},_S_acTrack_i:function(N,P){if((""==N)||(undefined==N)){return}A._S_sAEC(N);if(0==P){return}var O="AcTrack||"+A._S_gGID()+"||"+A._S_gsSID()+"||"+A._S_gSUP()+"||"+N+"||";A._S_p2Bcn(O,L)},_S_uaTrack_i:function(P,N){var O="UATrack||"+A._S_gGID()+"||"+A._S_gsSID()+"||"+A._S_gSUP()+"||"+P+"||"+N+"||"+A._S_gRef()+"||";A._S_p2Bcn(O,L)}};if(M==0){if("MSIE"==b){SSL.Global.doc.attachEvent("onclick",A._S_MEvent);SSL.Global.doc.attachEvent("onmousemove",A._S_MEvent);SSL.Global.doc.attachEvent("onscroll",A._S_MEvent)}else{SSL.Global.doc.addEventListener("click",A._S_MEvent,false);SSL.Global.doc.addEventListener("mousemove",A._S_MEvent,false);SSL.Global.doc.addEventListener("scroll",A._S_MEvent,false)}}A._S_sUOR();return{_S_pSt:function(N,P,O){try{if((j._S_isFreshMeta())||(j._S_isIFrameSelf(l,a))){return}++E;A._S_gsSID();setTimeout(function(){A._S_pBeacon(N,P,O,0)},e)}catch(Q){}},_S_pStM:function(N,P,O){++E;A._S_pBeacon(N,((undefined==P)?A._S_upExt1():P),O)},_S_acTrack:function(N,P){try{if((undefined!=N)&&(""!=N)){setTimeout(function(){A._S_acTrack_i(N,P)},e)}}catch(O){}},_S_uaTrack:function(O,N){try{if(undefined==O){O=""}if(undefined==N){N=""}if((""!=O)||(""!=N)){setTimeout(function(){A._S_uaTrack_i(O,N)},e)}}catch(P){}},_S_gCk:function(N){return j._S_gUCk(N)},_S_sCk:function(Q,N,O,P){return j._S_sUCk(Q,N,O,P)},_S_gGlobalID:function(){return A._S_gGID()},_S_gsessionID:function(){return A._S_gsSID()}}}var GB_SUDA;if(GB_SUDA==null){GB_SUDA=new SUDA({})}var _S_PID_="";function _S_pSt(a,c,b){GB_SUDA._S_pSt(a,c,b)}function _S_pStM(a,c,b){GB_SUDA._S_pStM(a,c,b)}function _S_acTrack(a){GB_SUDA._S_acTrack(a,1)}function _S_uaTrack(b,a){GB_SUDA._S_uaTrack(b,a)}(function(){function a(b,e,d){var c=document.createElement("script");if(typeof e==="string"){c.charset=e}c.onreadystatechange=c.onload=function(){if(!this.readyState||this.readyState=="loaded"||this.readyState=="complete"){if(e&&typeof e==="function"){e()}if(d&&typeof d==="function"){d()}c.onreadystatechange=c.onload=null;c.parentNode.removeChild(c)}};c.src=b;document.getElementsByTagName("head")[0].appendChild(c)}a("http://d3.sina.com.cn/shh/ws/2012/xb/gladnews_run.js")})(); 79 //--> 80 </script> 81 <script type="text/javascript"> 82 //<!-- 83 GB_SUDA._S_pSt(""); 84 //--> 85 </script> 86 <noScript> 87 <div style='position:absolute;top:0;left:0;width:0;height:0;visibility:hidden'><img width=0 height=0 src='http://beacon.sina.com.cn/a.gif?noScript' border='0' alt='' /></div> 88 </noScript> 89 <!-- SUDA_CODE_END --> 90 91 <div id="wrap"> 92 <!-- Header --> 93 <div id="header"> 94 <h1><em>??°???????????±???é???§?</em></h1> 95 <ul> 96 <li><a href="http://english.sina.com/index.html" onclick="_S_uaTrack('global_guide', 'english');">Sina English</a></li> 97 </ul> 98 <div class="clearDiv"></div> 99 </div>100 101 <!-- Map -->102 <div id="map">103 <img src="http://ui.sina.com/assets/img/www/worldmap.jpg" alt="" name="map1" width="775" height="248" border="0" usemap="#Map1" id="Map1" />104 105 <map name="Map1" id="">106 <area shape="rect" coords="173,81,299,137" href="http://home.sina.com" target="_self" alt="????????°???" title="????????°???" onclick="_S_uaTrack('global_guide', 'us');" />107 <area shape="rect" coords="468,81,572,129" href="http://www.sina.com.cn" target="_self" alt="????????°???" title="????????°???" onclick="_S_uaTrack('global_guide', 'beijing');" />108 <area shape="rect" coords="482,145,578,184" href="http://www.sina.com.hk" target="_self" alt="é???????°???" title="é???????°???" onclick="_S_uaTrack('global_guide', 'hongkong');" />109 <area shape="rect" coords="658,123,755,162" href="http://www.sina.com.tw" target="_self" alt="??°?????°???" title="??°?????°???" onclick="_S_uaTrack('global_guide', 'taipei');" />110 </map>111 </div>112 113 <!-- Channels -->114 <div id="channel">115 <img src="http://ui.sina.com/assets/img/www/categories-120918.gif" alt="" width="775" height="44" border="0" usemap="#Map4" id="Map4" />116 117 <map name="Map4" id="">118 <area shape="rect" target="_self" alt="??????" coords="4,3,76,35" href="http://us.weibo.com" onclick="_S_uaTrack('global_guide', 'weibo');" />119 <area shape="rect" target="_self" alt="??????" coords="95,3,166,37" href="http://google.sina.com/" onclick="_S_uaTrack('global_guide', 'search');" />120 <area shape="rect" target="_self" alt="è??é??" coords="171,2,241,38" href="http://video.sina.com" onclick="_S_uaTrack('global_guide', 'video');" />121 <area shape="rect" target="_self" alt="??¤???" coords="257,3,328,39" href="http://match.sina.com/" onclick="_S_uaTrack('global_guide', 'match');" />122 <area shape="rect" target="_self" alt="???é??" coords="432,3,496,36" href="http://travel.sina.com/" onclick="_S_uaTrack('global_guide', 'travel');" />123 <area shape="rect" target="_self" alt="é??é??" coords="509,2,582,35" href="http://yp.sina.com/" onclick="_S_uaTrack('global_guide', 'yellow');" />124 <area shape="rect" target="_self" alt="?????????" coords="590,2,679,33" href="http://sina.echineselearning.com/" onclick="_S_uaTrack('global_guide', 'chinese');" />125 <area shape="rect" target="_self" alt="è?????" coords="335,3,417,38" href="http://bbs.sina.com/" onclick="_S_uaTrack('global_guide', 'bbs');" />126 <area shape="rect" target="_self" alt="??????" coords="688,1,772,35" href="http://deals.sina.com" onclick="_S_uaTrack('global_guide', 'deals');" />127 </map>128 </div>129 130 <!-- ads (banners/buttons) -->131 <div id="ads">132 <ul>133 <li class="bnr728"><!-- Row 1 . 728x90 -->134 <script type="text/javascript">135 //<![CDATA[136 ord = window.ord || Math.floor(Math.random()*1E16);137 document.write('<script type="text/javascript" src="http://ad.doubleclick.net/adj/us.homepage/;pos=top;sz=728x90;ord=' + ord + '?"><//script>');138 //]]>139 </script>140 <noscript><a href="http://ad.doubleclick.net/jump/us.homepage/;pos=top;sz=728x90;ord=123456789?" target="_blank" ><img src="http://ad.doubleclick.net/ad/us.homepage/;pos=top;sz=728x90;ord=123456789?" border="0" alt="" /></a></noscript>141 <!-- END . Row 1 . 728x90 -->142 143 </li>144 145 <li class="bnr120"><script type="text/javascript" src="http://dailynews.sina.com/gb/ads/www/120_60/2.js"></script></li>146 <li class="bnr120"><script type="text/javascript" src="http://dailynews.sina.com/gb/ads/www/120_60/3.js"></script></li>147 <li class="bnr120"><script type="text/javascript" src="http://dailynews.sina.com/gb/ads/www/120_60/4.js"></script></li>148 <li class="bnr120"><script type="text/javascript" src="http://dailynews.sina.com/gb/ads/www/120_60/5.js"></script></li>149 <li class="bnr120"><script type="text/javascript" src="http://dailynews.sina.com/gb/ads/www/120_60/6.js"></script></li>150 151 <li class="bnr120"><script type="text/javascript" src="http://dailynews.sina.com/gb/ads/www/120_60/7.js"></script></li>152 <li class="bnr120"><script type="text/javascript" src="http://dailynews.sina.com/gb/ads/www/120_60/8.js"></script></li>153 <li class="bnr120"><script type="text/javascript" src="http://dailynews.sina.com/gb/ads/www/120_60/9.js"></script></li>154 <li class="bnr120"><script type="text/javascript" src="http://dailynews.sina.com/gb/ads/www/120_60/10.js"></script></li>155 <li class="bnr120"><script type="text/javascript" src="http://dailynews.sina.com/gb/ads/www/120_60/11.js"></script></li>156 157 </ul>158 159 <div class="clearDiv"></div>160 </div>161 <!-- END . ads -->162 163 <!-- Footer -->164 <div id="footer">165 <ul>166 <li><a href="http://corp.sina.com.cn/eng/">About SINA</a></li>167 <li>|</li>168 <li><a href="http://corp.sina.com.cn/eng/sina_rela_eng.htm">Investor</a></li>169 <li>|</li>170 <li><a href="http://mediakit.sina.com/">Media Kit</a></li>171 <li>|</li>172 <li><a href="http://mediakit.sina.com/contact.html">Comments or Question?</a></li>173 <br /><br />174 <li class="copyright">Copyright © 1996-2015 SINA Corporation, All Rights Reserved</li>175 </ul>176 </div>177 178 </div>179 180 <!--floating video-->181 <div id="flvideo">182 <script type="text/javascript" src="http://dailynews.sina.com/gb/ads/common/floatingvideo.js"></script>183 </div>184 185 <!-- START Nielsen Online SiteCensus V6.0 -->186 <script type="text/javascript" src="//secure-us.imrworldwide.com/v60.js"></script>187 <script type="text/javascript">188 var pvar = { cid: "us-sina", content: "0", server: "secure-us" };189 var feat = { surveys_enabled: 1, sample_rate: 0.1 };190 var trac = nol_t(pvar, feat);191 trac.record().post().do_sample();192 </script>193 <noscript>194 <div>195 <img src="//secure-us.imrworldwide.com/cgi-bin/m?ci=us-sina&cg=0&cc=1&ts=noscript" width="1" height="1" alt="" />196 </div>197 </noscript>198 <!-- END Nielsen Online SiteCensus V6.0 -->199 200 </body>201 </html>HTML Code
OK，这样就可以抓到网站主页的数据了。现在的HttpClient对于gzip格式的响应解析做得很好，在内部就解压缩了，不需要使用者做特殊处理。
后续还需要做一个桌面的应用，能够隔几分钟轮询页面，并将所需部分内容是否更新的状态通知给用户的功能。
新闻热点
疑难解答
