深圳公司开发网站,互联网怎么做,网页编辑软件朱,做网站颜色类型是啥由于工作原因#xff0c;需要每隔半小时刷新一些网页#xff0c;并查看上面的数据是否有更新。这件事能否自动化进行呢#xff1f;查找了下Java相关的资料#xff0c;蹦出一个关键词#xff1a;HttpClient。 HttpClient是常用Http客户端库#xff0c;相关的资料也不少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 xmlnshttp://maven.apache.org/POM/4.0.0 xmlns:xsihttp://www.w3.org/2001/XMLSchema-instance xsi:schemaLocationhttp://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd2 modelVersion4.0.0/modelVersion3 groupIdtest/groupId4 artifactIdadmin.test.httpclient/artifactId5 version0.0.1-SNAPSHOT/version6 dependencies7 dependency8 groupIdorg.apache.httpcomponents/groupId9 artifactIdhttpclient/artifactId 10 version4.5/version 11 /dependency 17 /dependencies 18 build 19 finalNameMvnTest/finalName 20 plugins 21 plugin 22 artifactIdmaven-compiler-plugin/artifactId 23 version2.0.2/version 24 configuration 25 source1.5/source 26 target1.5/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, */*; q0.01); 10 getReq.addHeader(Accept-Encoding, gzip,deflate,sdch); 11 getReq.addHeader(Accept-Language, zh-CN,zh;q0.8); 12 getReq.addHeader(Content-Type, text/html; charsetUTF-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.dtd2 !--[5019,2,1] published at 2015-01-01 14:46:19 from #110 by 22--3 html xmlnshttp://www.w3.org/1999/xhtml4 head5 meta http-equivContent-Type contenttext/html; charsetutf-8 /6 titleWWW.SINA.COM/title7 meta namekeywords contentsina, ??°??? /8 meta namedescription content??°???é??é?? /9 10 style typetext/css11 !--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: 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hrefhttp://travel.sina.com/ onclick_S_uaTrack(global_guide, travel); / 123 area shaperect target_self alté??é?? coords509,2,582,35 hrefhttp://yp.sina.com/ onclick_S_uaTrack(global_guide, yellow); / 124 area shaperect target_self alt????????? coords590,2,679,33 hrefhttp://sina.echineselearning.com/ onclick_S_uaTrack(global_guide, chinese); / 125 area shaperect target_self altè????? coords335,3,417,38 hrefhttp://bbs.sina.com/ onclick_S_uaTrack(global_guide, bbs); / 126 area shaperect target_self alt?????? coords688,1,772,35 hrefhttp://deals.sina.com onclick_S_uaTrack(global_guide, deals); / 127 /map 128 /div 129 130 !-- ads (banners/buttons) -- 131 div idads 132 ul 133 li classbnr728!-- Row 1 . 728x90 -- 134 script typetext/javascript 135 //![CDATA[ 136 ord window.ord || Math.floor(Math.random()*1E16); 137 document.write(script typetext/javascript srchttp://ad.doubleclick.net/adj/us.homepage/;postop;sz728x90;ord ord ?\/script); 138 //]] 139 /script 140 noscripta hrefhttp://ad.doubleclick.net/jump/us.homepage/;postop;sz728x90;ord123456789? target_blank img srchttp://ad.doubleclick.net/ad/us.homepage/;postop;sz728x90;ord123456789? border0 alt //a/noscript 141 !-- END . Row 1 . 728x90 -- 142 143 /li 144 145 li classbnr120script typetext/javascript srchttp://dailynews.sina.com/gb/ads/www/120_60/2.js/script/li 146 li classbnr120script typetext/javascript srchttp://dailynews.sina.com/gb/ads/www/120_60/3.js/script/li 147 li classbnr120script typetext/javascript srchttp://dailynews.sina.com/gb/ads/www/120_60/4.js/script/li 148 li classbnr120script typetext/javascript srchttp://dailynews.sina.com/gb/ads/www/120_60/5.js/script/li 149 li classbnr120script typetext/javascript srchttp://dailynews.sina.com/gb/ads/www/120_60/6.js/script/li 150 151 li classbnr120script typetext/javascript srchttp://dailynews.sina.com/gb/ads/www/120_60/7.js/script/li 152 li classbnr120script typetext/javascript srchttp://dailynews.sina.com/gb/ads/www/120_60/8.js/script/li 153 li classbnr120script typetext/javascript srchttp://dailynews.sina.com/gb/ads/www/120_60/9.js/script/li 154 li classbnr120script typetext/javascript srchttp://dailynews.sina.com/gb/ads/www/120_60/10.js/script/li 155 li classbnr120script typetext/javascript srchttp://dailynews.sina.com/gb/ads/www/120_60/11.js/script/li 156 157 /ul 158 159 div classclearDiv/div 160 /div 161 !-- END . ads -- 162 163 !-- Footer -- 164 div idfooter 165 ul 166 lia hrefhttp://corp.sina.com.cn/eng/About SINA/a/li 167 li|/li 168 lia hrefhttp://corp.sina.com.cn/eng/sina_rela_eng.htmInvestor/a/li 169 li|/li 170 lia hrefhttp://mediakit.sina.com/Media Kit/a/li 171 li|/li 172 lia hrefhttp://mediakit.sina.com/contact.htmlComments or Question?/a/li 173 br /br / 174 li classcopyrightCopyright copy; 1996-2015 SINA Corporation, All Rights Reserved/li 175 /ul 176 /div 177 178 /div 179 180 !--floating video-- 181 div idflvideo 182 script typetext/javascript srchttp://dailynews.sina.com/gb/ads/common/floatingvideo.js/script 183 /div 184 185 !-- START Nielsen Online SiteCensus V6.0 -- 186 script typetext/javascript src//secure-us.imrworldwide.com/v60.js/script 187 script typetext/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?cius-sinaamp;cg0amp;cc1amp;tsnoscript width1 height1 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。 转载于:https://www.cnblogs.com/dsdk2008/p/4745243.html