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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc (build 1.5.0_06) on Wed Sep 27 16:03:11 PDT 2006 --><TITLE>HTTPContentDigest (Heritrix 1.10.1)</TITLE><META NAME="keywords" CONTENT="org.archive.crawler.extractor.HTTPContentDigest class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="HTTPContentDigest (Heritrix 1.10.1)";}</SCRIPT><NOSCRIPT></NOSCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/HTTPContentDigest.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../org/archive/crawler/extractor/ExtractorXML.html" title="class in org.archive.crawler.extractor"><B>PREV CLASS</B></A> <A HREF="../../../../org/archive/crawler/extractor/Link.html" title="class in org.archive.crawler.extractor"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../index.html?org/archive/crawler/extractor/HTTPContentDigest.html" target="_top"><B>FRAMES</B></A> <A HREF="HTTPContentDigest.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: <A HREF="#nested_classes_inherited_from_class_org.archive.crawler.settings.ComplexType">NESTED</A> | <A HREF="#field_summary">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: <A HREF="#field_detail">FIELD</A> | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">org.archive.crawler.extractor</FONT><BR>Class HTTPContentDigest</H2><PRE>java.lang.Object <IMG SRC="../../../../resources/inherit.gif" ALT="extended by ">javax.management.Attribute <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../org/archive/crawler/settings/Type.html" title="class in org.archive.crawler.settings">org.archive.crawler.settings.Type</A> <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../org/archive/crawler/settings/ComplexType.html" title="class in org.archive.crawler.settings">org.archive.crawler.settings.ComplexType</A> <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../org/archive/crawler/settings/ModuleType.html" title="class in org.archive.crawler.settings">org.archive.crawler.settings.ModuleType</A> <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../org/archive/crawler/framework/Processor.html" title="class in org.archive.crawler.framework">org.archive.crawler.framework.Processor</A> <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.archive.crawler.extractor.HTTPContentDigest</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD>java.io.Serializable, javax.management.DynamicMBean</DD></DL><HR><DL><DT><PRE>public class <B>HTTPContentDigest</B><DT>extends <A HREF="../../../../org/archive/crawler/framework/Processor.html" title="class in org.archive.crawler.framework">Processor</A></DL></PRE><P>A processor for calculating custum HTTP content digests in place of the default (if any) computed by the HTTP fetcher processors. <p> This processor allows the user to specify a regular expression called <i>strip-reg-expr<i>. Any segment of a document (text only, binary files will be skipped) that matches this regular expression will by rewritten with the blank character (character 32 in the ANSI character set) <b> for the purpose of the digest</b> this has no effect on the document for subsequent processing or archiving. <p> NOTE: Content digest only accounts for the document body, not headers. <p> The operator will also be able to specify a maximum length for documents being evaluated by this processors. Documents exceeding that length will be ignored. <p> To further discriminate by file type or URL, an operator should use the override and refinement options. <p> It is generally recommended that this recalculation only be performed when absolutely needed (because of stripping data that changes automatically each time the URL is fetched) as this is an expensive operation.<P><P><DL><DT><B>Author:</B></DT> <DD>Kristinn Sigurdsson</DD><DT><B>See Also:</B><DD><A HREF="../../../../serialized-form.html#org.archive.crawler.extractor.HTTPContentDigest">Serialized Form</A></DL><HR><P><!-- ======== NESTED CLASS SUMMARY ======== --><A NAME="nested_class_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Nested Class Summary</B></FONT></TH></TR></TABLE> <A NAME="nested_classes_inherited_from_class_org.archive.crawler.settings.ComplexType"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TH ALIGN="left"><B>Nested classes/interfaces inherited from class org.archive.crawler.settings.<A HREF="../../../../org/archive/crawler/settings/ComplexType.html" title="class in org.archive.crawler.settings">ComplexType</A></B></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../../org/archive/crawler/settings/ComplexType.MBeanAttributeInfoIterator.html" title="class in org.archive.crawler.settings">ComplexType.MBeanAttributeInfoIterator</A></CODE></TD></TR></TABLE> <!-- =========== FIELD SUMMARY =========== -->⌨️ 快捷键说明
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