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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"><head><meta http-equiv="content-type" content="text/html; charset=UTF-8" /><title>ExtractorTool xref</title><link type="text/css" rel="stylesheet" href="../../../../stylesheet.css" /></head><body><div id="overview"><a href="../../../../../apidocs/org/archive/crawler/extractor/ExtractorTool.html">View Javadoc</a></div><pre><a name="1" href="#1">1</a> <em class="comment">/*<em class="comment"> ExtractorTool</em></em><a name="2" href="#2">2</a> <em class="comment"> * </em><a name="3" href="#3">3</a> <em class="comment"> * Created on Mar 14, 2005</em><a name="4" href="#4">4</a> <em class="comment"> *</em><a name="5" href="#5">5</a> <em class="comment"> * Copyright (C) 2005 Internet Archive.</em><a name="6" href="#6">6</a> <em class="comment"> * </em><a name="7" href="#7">7</a> <em class="comment"> * This file is part of the Heritrix web crawler (crawler.archive.org).</em><a name="8" href="#8">8</a> <em class="comment"> * </em><a name="9" href="#9">9</a> <em class="comment"> * Heritrix is free software; you can redistribute it and/or modify</em><a name="10" href="#10">10</a> <em class="comment"> * it under the terms of the GNU Lesser Public License as published by</em><a name="11" href="#11">11</a> <em class="comment"> * the Free Software Foundation; either version 2.1 of the License, or</em><a name="12" href="#12">12</a> <em class="comment"> * any later version.</em><a name="13" href="#13">13</a> <em class="comment"> * </em><a name="14" href="#14">14</a> <em class="comment"> * Heritrix is distributed in the hope that it will be useful, </em><a name="15" href="#15">15</a> <em class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</em><a name="16" href="#16">16</a> <em class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</em><a name="17" href="#17">17</a> <em class="comment"> * GNU Lesser Public License for more details.</em><a name="18" href="#18">18</a> <em class="comment"> * </em><a name="19" href="#19">19</a> <em class="comment"> * You should have received a copy of the GNU Lesser Public License</em><a name="20" href="#20">20</a> <em class="comment"> * along with Heritrix; if not, write to the Free Software</em><a name="21" href="#21">21</a> <em class="comment"> * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</em><a name="22" href="#22">22</a> <em class="comment"> */</em><a name="23" href="#23">23</a> <strong>package</strong> <a href="../../../../org/archive/crawler/extractor/package-summary.html">org.archive.crawler.extractor</a>;<a name="24" href="#24">24</a> <a name="25" href="#25">25</a> <strong>import</strong> java.io.File;<a name="26" href="#26">26</a> <strong>import</strong> java.io.IOException;<a name="27" href="#27">27</a> <strong>import</strong> java.lang.reflect.Constructor;<a name="28" href="#28">28</a> <strong>import</strong> java.util.ArrayList;<a name="29" href="#29">29</a> <strong>import</strong> java.util.Iterator;<a name="30" href="#30">30</a> <strong>import</strong> java.util.List;<a name="31" href="#31">31</a> <strong>import</strong> java.util.logging.ConsoleHandler;<a name="32" href="#32">32</a> <strong>import</strong> java.util.logging.Handler;<a name="33" href="#33">33</a> <strong>import</strong> java.util.logging.Logger;<a name="34" href="#34">34</a> <a name="35" href="#35">35</a> <strong>import</strong> javax.management.Attribute;<a name="36" href="#36">36</a> <a name="37" href="#37">37</a> <strong>import</strong> org.apache.commons.cli.CommandLine;<a name="38" href="#38">38</a> <strong>import</strong> org.apache.commons.cli.HelpFormatter;<a name="39" href="#39">39</a> <strong>import</strong> org.apache.commons.cli.Option;<a name="40" href="#40">40</a> <strong>import</strong> org.apache.commons.cli.Options;<a name="41" href="#41">41</a> <strong>import</strong> org.apache.commons.cli.PosixParser;<a name="42" href="#42">42</a> <strong>import</strong> org.apache.commons.httpclient.Header;<a name="43" href="#43">43</a> <strong>import</strong> org.apache.commons.httpclient.HttpMethodBase;<a name="44" href="#44">44</a> <strong>import</strong> org.apache.commons.httpclient.URIException;<a name="45" href="#45">45</a> <strong>import</strong> org.archive.crawler.datamodel.CoreAttributeConstants;<a name="46" href="#46">46</a> <strong>import</strong> org.archive.crawler.datamodel.CrawlOrder;<a name="47" href="#47">47</a> <strong>import</strong> org.archive.crawler.datamodel.CrawlURI;<a name="48" href="#48">48</a> <strong>import</strong> org.archive.crawler.framework.Processor;<a name="49" href="#49">49</a> <strong>import</strong> org.archive.crawler.settings.CrawlerSettings;<a name="50" href="#50">50</a> <strong>import</strong> org.archive.crawler.settings.MapType;<a name="51" href="#51">51</a> <strong>import</strong> org.archive.crawler.settings.SettingsHandler;<a name="52" href="#52">52</a> <strong>import</strong> org.archive.crawler.settings.XMLSettingsHandler;<a name="53" href="#53">53</a> <strong>import</strong> org.archive.io.arc.ARCReader;<a name="54" href="#54">54</a> <strong>import</strong> org.archive.io.arc.ARCReaderFactory;<a name="55" href="#55">55</a> <strong>import</strong> org.archive.io.arc.ARCRecord;<a name="56" href="#56">56</a> <strong>import</strong> org.archive.net.UURIFactory;<a name="57" href="#57">57</a> <strong>import</strong> org.archive.util.HttpRecorder;<a name="58" href="#58">58</a> <strong>import</strong> org.archive.util.OneLineSimpleLogger;<a name="59" href="#59">59</a> <a name="60" href="#60">60</a> <em>/**<em>*</em></em><a name="61" href="#61">61</a> <em> * Run named extractors against passed ARC file.</em><a name="62" href="#62">62</a> <em> * This extractor tool runs suboptimally. It takes each ARC file record,</em><a name="63" href="#63">63</a> <em> * writes it to a new scratch file, and then it runs each listed</em><a name="64" href="#64">64</a> <em> * extractor against the scratch. It works in this manner because</em><a name="65" href="#65">65</a> <em> * extractors want CharSequence, being able to refer to characters</em><a name="66" href="#66">66</a> <em> * by absolute position, but ARCs are compressed streams. The work</em><a name="67" href="#67">67</a> <em> * to get a CharSequence on an underlying compressed stream has not</em><a name="68" href="#68">68</a> <em> * been done. Other issues are need to setup CrawlerSetting environment</em><a name="69" href="#69">69</a> <em> * so extractors can run.</em><a name="70" href="#70">70</a> <em> * @author stack</em><a name="71" href="#71">71</a> <em> * @version $Date: 2005/07/18 17:29:23 $, $Revision: 1.4 $</em><a name="72" href="#72">72</a> <em> */</em><a name="73" href="#73">73</a> <strong>public</strong> <strong>class</strong> <a href="../../../../org/archive/crawler/extractor/ExtractorTool.html">ExtractorTool</a> {<a name="74" href="#74">74</a> <strong>private</strong> <strong>static</strong> <strong>final</strong> Logger logger =<a name="75" href="#75">75</a> Logger.getLogger(ExtractorTool.<strong>class</strong>.getName());<a name="76" href="#76">76</a> <strong>static</strong> {<a name="77" href="#77">77</a> <em class="comment">// Setup the oneline logger.</em><a name="78" href="#78">78</a> Handler [] hs = Logger.getLogger(<span class="string">""</span>).getHandlers();<a name="79" href="#79">79</a> <strong>for</strong> (<strong>int</strong> i = 0; i < hs.length; i++) {<a name="80" href="#80">80</a> Handler h = hs[0];<a name="81" href="#81">81</a> <strong>if</strong> (h instanceof ConsoleHandler) {<a name="82" href="#82">82</a> h.setFormatter(<strong>new</strong> <a href="../../../../org/archive/util/OneLineSimpleLogger.html">OneLineSimpleLogger</a>());<a name="83" href="#83">83</a> }<a name="84" href="#84">84</a> }<a name="85" href="#85">85</a> }<a name="86" href="#86">86</a> <a name="87" href="#87">87</a> <strong>private</strong> <strong>static</strong> <strong>final</strong> String [] DEFAULT_EXTRACTORS =<a name="88" href="#88">88</a> {<span class="string">"org.archive.crawler.extractor.ExtractorHTTP"</span>,<a name="89" href="#89">89</a> <span class="string">"org.archive.crawler.extractor.ExtractorHTML"</span>};<a name="90" href="#90">90</a> <strong>private</strong> <strong>final</strong> List extractors;<a name="91" href="#91">91</a> <strong>private</strong> <strong>final</strong> File scratchDir;<a name="92" href="#92">92</a> <strong>private</strong> <strong>static</strong> <strong>final</strong> String DEFAULT_SCRATCH = <span class="string">"/tmp"</span>;<a name="93" href="#93">93</a> <a name="94" href="#94">94</a> <strong>public</strong> <a href="../../../../org/archive/crawler/extractor/ExtractorTool.html">ExtractorTool</a>()<a name="95" href="#95">95</a> throws Exception {<a name="96" href="#96">96</a> <strong>this</strong>(DEFAULT_EXTRACTORS, DEFAULT_SCRATCH);<a name="97" href="#97">97</a> }<a name="98" href="#98">98</a> <a name="99" href="#99">99</a> <strong>public</strong> <a href="../../../../org/archive/crawler/extractor/ExtractorTool.html">ExtractorTool</a>(String [] e, String scratch)<a name="100" href="#100">100</a> throws Exception {<a name="101" href="#101">101</a> <strong>super</strong>();<a name="102" href="#102">102</a> <em class="comment">// Setup the scratch directory.</em><a name="103" href="#103">103</a> <strong>this</strong>.scratchDir = scratch == <strong>null</strong>?<a name="104" href="#104">104</a> <strong>new</strong> File(DEFAULT_SCRATCH): <strong>new</strong> File(scratch);<a name="105" href="#105">105</a> <strong>if</strong> (!<strong>this</strong>.scratchDir.exists()) {<a name="106" href="#106">106</a> <strong>this</strong>.scratchDir.mkdirs();<a name="107" href="#107">107</a> }<a name="108" href="#108">108</a> <em class="comment">// Set up settings system. Needed by extractors.</em><a name="109" href="#109">109</a> File orderFile = <strong>new</strong> File(<strong>this</strong>.scratchDir.getAbsolutePath(),<a name="110" href="#110">110</a> ExtractorTool.<strong>class</strong>.getName() + <span class="string">"_order.xml"</span>);<a name="111" href="#111">111</a> <a href="../../../../org/archive/crawler/settings/SettingsHandler.html">SettingsHandler</a> settingsHandler = <strong>new</strong> <a href="../../../../org/archive/crawler/settings/XMLSettingsHandler.html">XMLSettingsHandler</a>(orderFile);<a name="112" href="#112">112</a> settingsHandler.initialize();<a name="113" href="#113">113</a> settingsHandler.getOrder().<a name="114" href="#114">114</a> setAttribute(<strong>new</strong> Attribute(CrawlOrder.ATTR_SETTINGS_DIRECTORY,<a name="115" href="#115">115</a> <strong>this</strong>.scratchDir.getAbsolutePath()));<a name="116" href="#116">116</a> <a href="../../../../org/archive/crawler/settings/CrawlerSettings.html">CrawlerSettings</a> globalSettings =<a name="117" href="#117">117</a> settingsHandler.getSettingsObject(<strong>null</strong>);<a name="118" href="#118">118</a> <a href="../../../../org/archive/crawler/settings/MapType.html">MapType</a> extractorsSettings = (MapType)settingsHandler.getOrder().<a name="119" href="#119">119</a> getAttribute(CrawlOrder.ATTR_EXTRACT_PROCESSORS);<a name="120" href="#120">120</a> <strong>this</strong>.extractors = <strong>new</strong> ArrayList();<a name="121" href="#121">121</a> <strong>for</strong> (<strong>int</strong> i = 0; i < e.length; i++) {<a name="122" href="#122">122</a> Constructor c = Class.forName(e[i]).<a name="123" href="#123">123</a> getConstructor(<strong>new</strong> Class [] {String.<strong>class</strong>});<a name="124" href="#124">124</a> String name = Integer.toString(i);<a name="125" href="#125">125</a> <a href="../../../../org/archive/crawler/framework/Processor.html">Processor</a> p = (Processor)c.<strong>new</strong>Instance(<strong>new</strong> Object [] {name});<a name="126" href="#126">126</a> extractorsSettings.addElement(globalSettings, p);<a name="127" href="#127">127</a> p.setAttribute(<a name="128" href="#128">128</a> <strong>new</strong> Attribute(Processor.ATTR_ENABLED, Boolean.TRUE));<a name="129" href="#129">129</a> <strong>this</strong>.extractors.add(p);<a name="130" href="#130">130</a> }<a name="131" href="#131">131</a> }⌨️ 快捷键说明
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