xmlreader.html
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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_13) on Wed Jul 16 20:44:10 IST 2008 --><META http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><TITLE>XmlReader (ROME, RSS and atOM utilitiEs for Java 1.0RC1 API)</TITLE><META NAME="keywords" CONTENT="com.sun.syndication.io.XmlReader class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="XmlReader (ROME, RSS and atOM utilitiEs for Java 1.0RC1 API)";}</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/XmlReader.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="../../../../com/sun/syndication/io/WireFeedParser.html" title="interface in com.sun.syndication.io"><B>PREV CLASS</B></A> <A HREF="../../../../com/sun/syndication/io/XmlReaderException.html" title="class in com.sun.syndication.io"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../index.html?com/sun/syndication/io/XmlReader.html" target="_top"><B>FRAMES</B></A> <A HREF="XmlReader.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: NESTED | <A HREF="#fields_inherited_from_class_java.io.Reader">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: FIELD | <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">com.sun.syndication.io</FONT><BR>Class XmlReader</H2><PRE>java.lang.Object <IMG SRC="../../../../resources/inherit.gif" ALT="extended by ">java.io.Reader <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>com.sun.syndication.io.XmlReader</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD>java.io.Closeable, java.lang.Readable</DD></DL><HR><DL><DT><PRE>public class <B>XmlReader</B><DT>extends java.io.Reader</DL></PRE><P>Character stream that handles (or at least attemtps to) all the necessary Voodo to figure out the charset encoding of the XML document within the stream. <p> IMPORTANT: This class is not related in any way to the org.xml.sax.XMLReader. This one IS a character stream. <p> All this has to be done without consuming characters from the stream, if not the XML parser will not recognized the document as a valid XML. This is not 100% true, but it's close enough (UTF-8 BOM is not handled by all parsers right now, XmlReader handles it and things work in all parsers). <p> The XmlReader class handles the charset encoding of XML documents in Files, raw streams and HTTP streams by offering a wide set of constructors. <P> By default the charset encoding detection is lenient, the constructor with the lenient flag can be used for an script (following HTTP MIME and XML specifications). All this is nicely explained by Mark Pilgrim in his blog, <a href="http://diveintomark.org/archives/2004/02/13/xml-media-types"> Determining the character encoding of a feed</a>. <p><P><P><DL><DT><B>Author:</B></DT> <DD>Alejandro Abdelnur</DD></DL><HR><P><!-- =========== FIELD SUMMARY =========== --><A NAME="field_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>Field Summary</B></FONT></TH></TR></TABLE> <A NAME="fields_inherited_from_class_java.io.Reader"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TH ALIGN="left"><B>Fields inherited from class java.io.Reader</B></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>lock</CODE></TD></TR></TABLE> <!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_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>Constructor Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../com/sun/syndication/io/XmlReader.html#XmlReader(java.io.File)">XmlReader</A></B>(java.io.File file)</CODE><BR> Creates a Reader for a File.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../com/sun/syndication/io/XmlReader.html#XmlReader(java.io.InputStream)">XmlReader</A></B>(java.io.InputStream is)</CODE><BR> Creates a Reader for a raw InputStream.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../com/sun/syndication/io/XmlReader.html#XmlReader(java.io.InputStream, boolean)">XmlReader</A></B>(java.io.InputStream is, boolean lenient)</CODE><BR> Creates a Reader for a raw InputStream.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../com/sun/syndication/io/XmlReader.html#XmlReader(java.io.InputStream, java.lang.String)">XmlReader</A></B>(java.io.InputStream is, java.lang.String httpContentType)</CODE><BR> Creates a Reader using an InputStream an the associated content-type header.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../com/sun/syndication/io/XmlReader.html#XmlReader(java.io.InputStream, java.lang.String, boolean)">XmlReader</A></B>(java.io.InputStream is, java.lang.String httpContentType, boolean lenient)</CODE><BR> Creates a Reader using an InputStream an the associated content-type header.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../com/sun/syndication/io/XmlReader.html#XmlReader(java.io.InputStream, java.lang.String, boolean, java.lang.String)">XmlReader</A></B>(java.io.InputStream is, java.lang.String httpContentType, boolean lenient, java.lang.String defaultEncoding)</CODE><BR> Creates a Reader using an InputStream an the associated content-type header.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../com/sun/syndication/io/XmlReader.html#XmlReader(java.net.URL)">XmlReader</A></B>(java.net.URL url)</CODE><BR> Creates a Reader using the InputStream of a URL.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../com/sun/syndication/io/XmlReader.html#XmlReader(java.net.URLConnection)">XmlReader</A></B>(java.net.URLConnection conn)</CODE><BR> Creates a Reader using the InputStream of a URLConnection.</TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_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>Method Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/sun/syndication/io/XmlReader.html#close()">close</A></B>()</CODE><BR> Closes the XmlReader stream.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/sun/syndication/io/XmlReader.html#getDefaultEncoding()">getDefaultEncoding</A></B>()</CODE><BR> Returns the default encoding to use if none is set in HTTP content-type, XML prolog and the rules based on content-type are not adequate.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/sun/syndication/io/XmlReader.html#getEncoding()">getEncoding</A></B>()</CODE><BR> Returns the charset encoding of the XmlReader.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/sun/syndication/io/XmlReader.html#read(char[], int, int)">read</A></B>(char[] buf, int offset, int len)</CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/sun/syndication/io/XmlReader.html#setDefaultEncoding(java.lang.String)">setDefaultEncoding</A></B>(java.lang.String encoding)</CODE><BR> Sets the default encoding to use if none is set in HTTP content-type, XML prolog and the rules based on content-type are not adequate.</TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.io.Reader"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TH ALIGN="left"><B>Methods inherited from class java.io.Reader</B></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>mark, markSupported, read, read, read, ready, reset, skip</CODE></TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD></TR></TABLE> <P><!-- ========= CONSTRUCTOR DETAIL ======== --><A NAME="constructor_detail"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"><B>Constructor Detail</B></FONT></TH></TR></TABLE><A NAME="XmlReader(java.io.File)"><!-- --></A><H3>XmlReader</H3><PRE>public <B>XmlReader</B>(java.io.File file) throws java.io.IOException</PRE><DL><DD>Creates a Reader for a File. <p> It looks for the UTF-8 BOM first, if none sniffs the XML prolog charset, if this is also missing defaults to UTF-8. <p> It does a lenient charset encoding detection, check the constructor with the lenient parameter for details. <p><P><DL><DT><B>Parameters:</B><DD><CODE>file</CODE> - File to create a Reader from.<DT><B>Throws:</B><DD><CODE>java.io.IOException</CODE> - thrown if there is a problem reading the file.</DL></DL><HR><A NAME="XmlReader(java.io.InputStream)"><!-- --></A><H3>XmlReader</H3><PRE>public <B>XmlReader</B>(java.io.InputStream is) throws java.io.IOException</PRE><DL><DD>Creates a Reader for a raw InputStream. <p> It follows the same logic used for files. <p> It does a lenient charset encoding detection, check the constructor with the lenient parameter for details. <p><P><DL><DT><B>Parameters:</B><DD><CODE>is</CODE> - InputStream to create a Reader from.<DT><B>Throws:</B><DD><CODE>java.io.IOException</CODE> - thrown if there is a problem reading the stream.</DL></DL><HR><A NAME="XmlReader(java.io.InputStream, boolean)"><!-- --></A><H3>⌨️ 快捷键说明
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