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ServletInputStream (Servlet API Documentation)
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javax.servlet</FONT>
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Class ServletInputStream</H2>
<PRE>
java.lang.Object
<IMG SRC="../../resources/inherit.gif" ALT="extended by">java.io.InputStream
<IMG SRC="../../resources/inherit.gif" ALT="extended by"><B>javax.servlet.ServletInputStream</B>
</PRE>
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<DL>
<DT>public abstract class <B>ServletInputStream</B><DT>extends java.io.InputStream</DL>
<P>
Provides an input stream for reading binary data from a client
request, including an efficient <code>readLine</code> method
for reading data one line at a time. With some protocols, such
as HTTP POST and PUT, a <code>ServletInputStream</code>
object can be used to read data sent from the client.
<p>A <code>ServletInputStream</code> object is normally retrieved via
the <A HREF="../../javax/servlet/ServletRequest.html#getInputStream()"><CODE>ServletRequest.getInputStream()</CODE></A> method.
<p>This is an abstract class that a servlet container implements.
Subclasses of this class
must implement the <code>java.io.InputStream.read()</code> method.
<P>
<P>
<DL>
<DT><B>Version:</B></DT>
<DD>$Version$</DD>
<DT><B>Author:</B></DT>
<DD>Various</DD>
<DT><B>See Also:</B><DD><A HREF="../../javax/servlet/ServletRequest.html" title="interface in javax.servlet"><CODE>ServletRequest</CODE></A></DL>
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<CODE>protected </CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/servlet/ServletInputStream.html#ServletInputStream()">ServletInputStream</A></B>()</CODE>
<BR>
Does nothing, because this is an abstract class.</TD>
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<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/servlet/ServletInputStream.html#readLine(byte[], int, int)">readLine</A></B>(byte[] b,
int off,
int len)</CODE>
<BR>
Reads the input stream, one line at a time.</TD>
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<TD><B>Methods inherited from class java.io.InputStream</B></TD>
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<TD><CODE>available, close, mark, markSupported, read, read, read, reset, skip</CODE></TD>
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<TD><B>Methods inherited from class java.lang.Object</B></TD>
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<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
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<A NAME="ServletInputStream()"><!-- --></A><H3>
ServletInputStream</H3>
<PRE>
protected <B>ServletInputStream</B>()</PRE>
<DL>
<DD>Does nothing, because this is an abstract class.
<P>
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<A NAME="readLine(byte[], int, int)"><!-- --></A><H3>
readLine</H3>
<PRE>
public int <B>readLine</B>(byte[] b,
int off,
int len)
throws java.io.IOException</PRE>
<DL>
<DD>Reads the input stream, one line at a time. Starting at an
offset, reads bytes into an array, until it reads a certain number
of bytes or reaches a newline character, which it reads into the
array as well.
<p>This method returns -1 if it reaches the end of the input
stream before reading the maximum number of bytes.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>b</CODE> - an array of bytes into which data is read<DD><CODE>off</CODE> - an integer specifying the character at which
this method begins reading<DD><CODE>len</CODE> - an integer specifying the maximum number of
bytes to read
<DT><B>Returns:</B><DD>an integer specifying the actual number of bytes
read, or -1 if the end of the stream is reached
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE> - if an input or output exception has occurred</DL>
</DD>
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