我正在使用java中的JSoup API来读取html内容并获取存储在标记中的链接。下面是html代码，我想在下面的html代码中将链接存储在以下标记<a onClick="javascript:RefreshPageTo(event, "...)"> near <td class="ms-paging">1 - 15</td>;中。
html数据读取文件名：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN">
<html dir="ltr" class="ms-isBot" lang="en-US">
<head>
<meta name="GENERATOR" content="Microsoft SharePoint" />
<meta http-equiv="Content-type" content="text/html; charset=utf-8" />
<title>
ALL ELP REPORTS
</title>
<!-- === Favicon / Windows Tile ==================================================================== -->
<link rel="shortcut icon" href=" " type="image/vnd.microsoft.icon" id="favicon" />
<meta name="msapplication-TileImage" content=" " />
<meta name="msapplication-TileColor" content="#0072C6" />
<script type="text/javascript" src=" "></script>
<link rel="stylesheet" type="text/css" href=" " />
<link id="CssRegistration1" rel="stylesheet" type="text/css" href=" " />
<link id="CssRegistration2" rel="stylesheet" type="text/css" href=" 0" />
<script type="text/javascript">CallASP("one.js");
</script>
<script type="text/javascript">RegisterSod("strings.js", "\u002f_layouts\u002f15\u002f1033\u002fstrings.js?rev=cG2ZohQxWuyz1\u00252BF2exRTjA\u00253D\u00253D");RegisterSodDep("strings.js", "initstrings.js");
<link type="text/xml" rel="alternate" href="/_asd.xls" />
<!-- Additional header placeholder =========================== -->
<link rel="alternate" type="application/rss+xml" title="Documents" href="/_layouts/15/listfeed.aspx?List=573d80cd%2D44f6%2D47b4%2D942f%2Da12a5a1841cb" />
<span id="analytics">
<script language="JavaScript" type="text/javascript">
<noscript>
<div class="noindex">
You may be trying to access this site from a secured browser on the server. Please enable scripts and reload this page.
</div>
</noscript>
<!-- ===== SP IDs / Prefetch SP images / SP Form =========================================================================== -->
<div id="imgPrefetch" style="display:none">
<img src="/_layouts/15/images/spcommon.png" />
</div>
<form method="post" action="./AllItems.aspx?RootFolder=%2fShared+Documents%2f08.Test+Report%2fMY20+Test+Reports%2fSanity%2fRaw+Data&FolderCTID=0x0120003C2FB175ACD9FE42B875BA259F53A6E3&View=%7bF8BC514C-49A5-47A2-8A6D-52DF70D61AE7%7d" id="aspnetForm">
<input type="hidden" name="_wpcmWpid" id="_wpcmWpid" value="" />
<input type="hidden" name="wpcmVal" id="wpcmVal" value="" />
<input type="hidden" name="MSOWebPartPage_PostbackSource" id="MSOWebPartPage_PostbackSource" value="" />
</script>
<div id="ctl00_ctl47_asdasd" class="asdaBrandMenu">
<a href="http://www.qwer.com/" target="_blank"> </a>
<!-- =============Suite Bar Links ======================-->
<div id="DeltaSuiteLinks" class="ms-core-deltaSuiteLinks">
<div id="suiteLinksBox">
<div id="SuiteLinksHidden" style="display: none">
</div>
<div id="launcherIconContainer">
</div>
<span style="display:none">
<menu type="ServerMenu" id="zz1_ID_PersonalActionMenu" hideicons="true">
<ie:menuitem id="zz2_ID_MyProfile" type="option" onmenuclick="" text="My Profile" menugroupid="100"></ie:menuitem>
<ie:menuitem id="zz3_ID_Logout" type="option" onmenuclick="" text="Sign Out" description="Logout of this site." menugroupid="100"></ie:menuitem>
</menu></span>
<span id="zz4_Menu_t" class="ms-menu-althov ms-welcome-root" title="Open Menu" onmouseover="MMU_PopMenuIfShowing(this);MMU_EcbTableMouseOverOut(this, true)" hoveractive="ms-menu-althov-active ms-welcome-root ms-welcome-hover" hoverinactive="ms-menu-althov ms-welcome-root" onclick=" CoreInvoke('MMU_Open',byid('zz1_ID_PersonalActionMenu'), MMU_GetMenuFromClientId('zz4_Menu'),event,true, null, 0); return false;" foa="MMU_GetMenuFromClientId('zz4_Menu')" oncontextmenu="ClkElmt(this); return false;" style="white-space:nowrap"><a class="ms-core-menu-root" id="zz4_Menu" accesskey="/" href="javascript:;" title="Open Menu" onfocus="MMU_EcbLinkOnFocusBlur(byid('zz1_ID_PersonalActionMenu'), this, true);" onkeydown="MMU_EcbLinkOnKeyDown(byid('zz1_ID_PersonalActionMenu'), MMU_GetMenuFromClientId('zz4_Menu'), event);" onclick=" CoreInvoke('MMU_Open',byid('zz1_ID_PersonalActionMenu'), MMU_GetMenuFromClientId('zz4_Menu'),event,true, null, 0); return false;" oncontextmenu="ClkElmt(this); return false;" menutokenvalues="MENUCLIENTID=zz4_Menu,TEMPLATECLIENTID=zz1_ID_PersonalActionMenu" serverclientid="zz4_Menu">Bhavani Borra<span class="ms-accessible">Use SHIFT+ENTER to open the menu (new window).</span></a><span style="height:4px;width:7px;position:relative;display:inline-block;overflow:hidden;" class="s4-clust ms-viewselector-arrow ms-menu-stdarw ms-core-menu-arrow"><img src="/_catalogs/theme/Themed/EB5E82F/spcommon-B35BB0A9.themedpng?ctag=3" alt="Open Menu" style="position:absolute;left:-95px !important;top:-259px !important;" /></span><span style="height:4px;width:7px;position:relative;display:inline-block;overflow:hidden;" class="s4-clust ms-core-menu-arrow ms-viewselector-arrow ms-menu-hovarw"><img src="/_catalogs/theme/Themed/EB5E82F/spcommon-B35BB0A9.themedpng?ctag=3" alt="Open Menu" style="position:absolute;left:-86px !important;top:-259px !important;" /></span></span>
</div>
<!-- ======== Start: Site Actions menu ============= -->
<div id="suiteBarButtons">
<span class="ms-siteactions-root" id="siteactiontd"> <span style="display:none">
<menu type="ServerMenu" id="zz5_FeatureMenuTemplate1" hideicons="true">
<ie:menuitem id="zz6_MenuItem_ShareThisSite" type="option" onmenuclick="" description="See who's here and invite new people." menugroupid="100"></ie:menuitem>
<ie:menuitem id="zz7_MenuItem_ViewAllSiteContents" type="option" iconsrc="" onmenuclick="STSNavigate2(event,'/_layouts/15/viewlsts.aspx');" text="Site contents" description="View all libraries and lists in this site." menugroupid="200"></ie:menuitem>
</menu></span><span id="zz8_SiteActionsMenu_t" class="ms-siteactions-normal" title="Settings" onmouseover="MMU_PopMenuIfShowing(this);MMU_EcbTableMouseOverOut(this, true)" hoveractive="ms-siteactions-normal ms-siteactions-hover" hoverinactive="ms-siteactions-normal">
<a class="ms-core-menu-root" id="zz8_SiteActionsMenu" accesskey="/" href="javascript:;" title="Settings" onkeydown="MMU_EcbLinkOnKeyDown(byid('zz5_FeatureMenuTemplate1'), MMU_GetMenuFromClientId('zz8_SiteActionsMenu'));" menutokenvalues="MENUCLIENTID=zz8_SiteActionsMenu,TEMPLATECLIENTID=zz5_FeatureMenuTemplate1" serverclientid="zz8_SiteActionsMenu"><span class="ms-siteactions-imgspan"><img class="ms-core-menu-buttonIcon" src="/_catalogs/theme/Themed/EB5E82F/Settings-white-94FE89A9.themedpng?ctag=3" alt="Settings" title="Settings" /></span><span class="ms-accessible">Use SHIFT+ENTER to open the menu (new window).</span></a></span> </span>
</div>
<!-- ================== End: Site Actions Menu ============================================ -->
<!-- ================== IT Help Link ============================================ -->
<div class="ms-core-listMenu-verticalBox">
</div>
</div>
</div>
</div>
<!-- ===== Main Content ========================================================================================== -->
<tr class="ms-alternating ms-itmhover" iid="47,1430,0">
<td class="ms-vb-itmcbx ms-vb-firstCell"><input type="checkbox" class="s4-itm-cbx" /></td>
<td class="ms-vb-icon"><img border="0" alt="ECS-dailyTask.xls" title="ECS-dailyTask.xls" src="" /></td>
<td height="100%" onmouseover="OnChildItem(this)" class="ms-vb-title">
<div class="ms-vb itx" onmouseover="OnItem(this)" ctxname="ctx47" id="1430" field="LinkFilename" perm="0x1b03c4312ef" eventtype="">
<a onfocus="OnLink(this)" href="/MyDocuments/ECS-dailyTask.xls" onmousedown="">ECS-dailyTask</a>
</div>
<div class="s4-ctx" onmouseover="OnChildItem(this.parentNode); return false;">
<span> </span>
<a onfocus="OnChildItem(this.parentNode.parentNode); return false;" onclick="" href="javascript:;" title="Open Menu"></a>
<span> </span>
</div></td>
<td class="ms-vb2">
<nobr>
3/31/2013 11:04 AM
</nobr></td>
<tr class="ms-alternating ms-itmhover" iid="47,1429,0">
<td class="ms-vb-itmcbx ms-vb-firstCell"><input type="checkbox" class="s4-itm-cbx" /></td>
<td class="ms-vb-icon"><img border="0" alt="ECS-MontlhyTask.xls" title="ECS-MontlhyTask.xls" src="/_layouts/15/images/icxls.png?rev=23" /></td>
<td height="100%" onmouseover="OnChildItem(this)" class="ms-vb-title">
<div class="ms-vb itx" onmouseover="OnItem(this)" ctxname="ctx47" id="1429" field="LinkFilename" perm="0x1b03c4312ef" eventtype="">
<a onfocus="OnLink(this)" href="/MyDocs/ECS-MontlhyTask.xls" onmousedown="">ECS-MontlhyTask</a>
</div>
<div class="s4-ctx" onmouseover="OnChildItem(this.parentNode); return false;">
<span> </span>
<a onfocus="" onclick="" href="javascript:;" title="Open Menu"></a>
<span> </span>
</div></td>
<td class="ms-vb2">
<nobr>
7/24/2016 10:09 PM
</nobr></td>
<td class="ms-vb-user"><span class="ms-noWrap"><span class="ms-imnSpan"><a href="#" onclick="" class="ms-imnlink ms-spimn-presenceLink">
<span class="ms-spimn-presenceWrapper ms-imnImg ms-spimn-imgSize-10x10">
<img name="imnmark" class="" title="" showofflinepawn="1" src="" alt="No presence information" id="imn_16532,type=sip" />
</span></a></span><span class="ms-noWrap ms-imnSpan">
<a href="#" onclick="" class="ms-imnlink" tabindex="-1"><img name="imnmark" class="ms-hide" title="" showofflinepawn="1" src="" alt=""/></a>
<a class="ms-subtleLink" onclick="" href="/_layouts/15/userdisp.aspx?ID=113">ASDF</a></span></span></td>
</tr>
..
...
<table width="100%" border="0" cellpadding="0" cellspacing="0" class="ms-bottompaging" xmlns:x="http://www.w3.org/2001/XMLSchema" xmlns:d="http://schemas.microsoft.com/" xmlns:asp="http://schemas.microsoft.com/ASPNET/20" xmlns:pcm="urn:PageContentManager" xmlns:ddwrt2="urn:frontpage:internal">
<tbody>
<tr>
<td class="ms-bottompagingline1"><img src="/_images/11/images/blank.gif?rev=40" width="1" height="1" alt="" /></td>
</tr>
<tr>
<td class="ms-bottompagingline2"><img src="/_images/11/images/blank.gif?rev=40" width="1" height="1" alt="" /></td>
</tr>
<tr>
<td class="ms-vb" id="bottomPagingCellWPQ2" align="center">
<table>
<tbody>
<tr>
<td class="ms-paging">1 - 15</td>
<td><a onclick="javascript:RefreshPageTo(event, "/sites/myAppDetail/My%20Documents/Forms/AllApplicationss.aspx?Paged=TRUE&p_SortBehavior=0&p_FileLeafRef=LT%5fSW%20TEAM%5fNatural%5fItemCode%5f20170909%5fvstatus%2epdf&p_ID=85&RootFolder=%2fmyData%2fFolder3%2fCommon%20Docs%2fdaily%20Report%2f2017&PageFirstRow=16&&View={05465DFA-110E-21FC-8AD6-8B9846567FF8B}");javascript:return false;" href="javascript:"><img src="/_layouts/15/1011/images/next.gif" border="0" alt="Next" /></a></td>
</tr>
</tbody>
</table></td>
</tr>
<tr>
示例java代码（未给出预期的输出）：
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
import java.io.File;
import java.io.IOException;
public class ReadFileNamesFromHTMLContent {
public static void main(String args[]) throws IOException {
File input = new File("C:/jsoupTest/readData.html");
Document doc = Jsoup.parse(input, "UTF-8");
Elements links = doc.select(".ms-paging > td > a"); //get the value stored inside <a onClick="javascript:RefreshPageTo(event, "...)"> near <td class="ms-paging">1 - 15</td>;
System.out.println("size : "+ links.size()); //0
for (Element link : links) {
System.out.println(link);//empty, it should print the link
}
}
}
上述代码的输出：
size:0
预期产出：
"/sites/myAppDetail/My%20Documents/Forms/AllApplicationss.aspx?Paged=TRUE&p_SortBehavior=0&p_FileLeafRef=LT%5fSW%20TEAM%5fNatural%5fItemCode%5f20170909%5fvstatus%2epdf&p_ID=85&RootFolder=%2fmyData%2fFolder3%2fCommon%20Docs%2fdaily%20Report%2f2017&PageFirstRow=16&&View={05465DFA-110E-21FC-8AD6-8B9846567FF8B}"
我认为我缺少一些更多的条件检查来添加以获得预期的输出。任何建议..
答案 0 :(得分：0)
您的CSS选择器不正确。它正在<a>类内的<td>标记内寻找.ms-paging标记。您感兴趣的锚标记不在ms-paging类中。
尝试将表格行的HTML更改为此（添加ms-paging-row类）：
<tr class="ms-paging-row">
<td class="ms-paging">1 - 15</td>
<td><a onclick="javascript:RefreshPageTo(event, "/sites/myAppDetail/My%20Documents/Forms/AllApplicationss.aspx?Paged=TRUE&p_SortBehavior=0&p_FileLeafRef=LT%5fSW%20TEAM%5fNatural%5fItemCode%5f20170909%5fvstatus%2epdf&p_ID=85&RootFolder=%2fmyData%2fFolder3%2fCommon%20Docs%2fdaily%20Report%2f2017&PageFirstRow=16&&View={05465DFA-110E-21FC-8AD6-8B9846567FF8B}");javascript:return false;" href="javascript:"><img src="/_layouts/15/1011/images/next.gif" border="0" alt="Next" /></a></td>
</tr>
您的Java代码（将选择器更改为.ms-paging-row > td > a）：
File input = new File("C:/jsoupTest/readData.html");
Document doc = Jsoup.parse(input, "UTF-8");
Elements links = doc.select(".ms-paging-row > td > a"); //get the value stored inside <a onClick="javascript:RefreshPageTo(event, "...)"> near <td class="ms-paging">1 - 15</td>;
System.out.println("size : "+ links.size()); //0
for (Element link : links)
{
System.out.println(link);//empty, it should print the link
}
<强>更新
如果您不能或不想更改HTML，那么只需更改您的选择器以使用相邻的组合符（加号）：.ms-paging + td > a：
File input = new File("C:/jsoupTest/readData.html");
Document doc = Jsoup.parse(input, "UTF-8");
Elements links = doc.select(".ms-paging + td > a"); //get the value stored inside <a onClick="javascript:RefreshPageTo(event, "...)"> near <td class="ms-paging">1 - 15</td>;
System.out.println("size : "+ links.size()); //0
for (Element link : links)
{
System.out.println(link);//empty, it should print the link
}