servletresponse.html

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Java 2 Platform EE v1.3: Interface  ServletResponse
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javax.servlet</FONT>
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Interface  ServletResponse</H2>
<DL>
<DT><B>All Known Subinterfaces:</B> <DD><A HREF="../../javax/servlet/http/HttpServletResponse.html">HttpServletResponse</A></DD>
</DL>
<DL>
<DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../javax/servlet/ServletResponseWrapper.html">ServletResponseWrapper</A></DD>
</DL>
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<DL>
<DT>public interface <B>ServletResponse</B></DL>

<P>
Defines an object to assist a servlet in sending a response to the client.
 The servlet container creates a <code>ServletResponse</code> object and
 passes it as an argument to the servlet's <code>service</code> method.

 <p>To send binary data in a MIME body response, use
 the <A HREF="../../javax/servlet/ServletOutputStream.html"><CODE>ServletOutputStream</CODE></A> returned by <A HREF="../../javax/servlet/ServletResponse.html#getOutputStream()"><CODE>getOutputStream()</CODE></A>.
 To send character data, use the <code>PrintWriter</code> object 
 returned by <A HREF="../../javax/servlet/ServletResponse.html#getWriter()"><CODE>getWriter()</CODE></A>. To mix binary and text data,
 for example, to create a multipart response, use a
 <code>ServletOutputStream</code> and manage the character sections
 manually.

 <p>The charset for the MIME body response can be specified with 
 <A HREF="../../javax/servlet/ServletResponse.html#setContentType(java.lang.String)"><CODE>setContentType(java.lang.String)</CODE></A>.  For example, "text/html; charset=Shift_JIS".
 The charset can alternately be set using <A HREF="../../javax/servlet/ServletResponse.html#setLocale(java.util.Locale)"><CODE>setLocale(java.util.Locale)</CODE></A>.
 If no charset is specified, ISO-8859-1 will be used.  
 The <code>setContentType</code> or <code>setLocale</code> method 
 must be called before <code>getWriter</code> for the charset to 
 affect the construction of the writer.
 
 <p>See the Internet RFCs such as 
 <a href="http://info.internet.isi.edu/in-notes/rfc/files/rfc2045.txt">
 RFC 2045</a> for more information on MIME. Protocols such as SMTP
 and HTTP define profiles of MIME, and those standards
 are still evolving.
<P>
<DL>
<DT><B>See Also: </B><DD><A HREF="../../javax/servlet/ServletOutputStream.html"><CODE>ServletOutputStream</CODE></A></DL>
<HR>

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<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/servlet/ServletResponse.html#flushBuffer()">flushBuffer</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Forces any content in the buffer to be written to the client.</TD>
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<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/servlet/ServletResponse.html#getBufferSize()">getBufferSize</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the actual buffer size used for the response.</TD>
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<CODE>&nbsp;java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/servlet/ServletResponse.html#getCharacterEncoding()">getCharacterEncoding</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the name of the charset used for
 the MIME body sent in this response.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;java.util.Locale</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/servlet/ServletResponse.html#getLocale()">getLocale</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the locale assigned to the response.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../javax/servlet/ServletOutputStream.html">ServletOutputStream</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/servlet/ServletResponse.html#getOutputStream()">getOutputStream</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns a <A HREF="../../javax/servlet/ServletOutputStream.html"><CODE>ServletOutputStream</CODE></A> suitable for writing binary 
 data in the response.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;java.io.PrintWriter</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/servlet/ServletResponse.html#getWriter()">getWriter</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns a <code>PrintWriter</code> object that 
 can send character text to the client.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/servlet/ServletResponse.html#isCommitted()">isCommitted</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns a boolean indicating if the response has been
 committed.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/servlet/ServletResponse.html#reset()">reset</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Clears any data that exists in the buffer as well as the status code and
 headers.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/servlet/ServletResponse.html#resetBuffer()">resetBuffer</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Clears the content of the underlying buffer in the response without
 clearing headers or status code.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/servlet/ServletResponse.html#setBufferSize(int)">setBufferSize</A></B>(int&nbsp;size)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the preferred buffer size for the body of the response.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/servlet/ServletResponse.html#setContentLength(int)">setContentLength</A></B>(int&nbsp;len)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the length of the content body in the response
 In HTTP servlets, this method sets the HTTP Content-Length header.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/servlet/ServletResponse.html#setContentType(java.lang.String)">setContentType</A></B>(java.lang.String&nbsp;type)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the content type of the response being sent to
 the client.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/servlet/ServletResponse.html#setLocale(java.util.Locale)">setLocale</A></B>(java.util.Locale&nbsp;loc)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the locale of the response, setting the headers (including the
 Content-Type's charset) as appropriate.</TD>
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<A NAME="getCharacterEncoding()"><!-- --></A><H3>
getCharacterEncoding</H3>
<PRE>
public java.lang.String <B>getCharacterEncoding</B>()</PRE>
<DL>
<DD>Returns the name of the charset used for
 the MIME body sent in this response.

 <p>If no charset has been assigned, it is implicitly
 set to <code>ISO-8859-1</code> (<code>Latin-1</code>).

 <p>See RFC 2047 (http://ds.internic.net/rfc/rfc2045.txt)
 for more information about character encoding and MIME.<DD><DL>
<DT><B>Returns:</B><DD>a <code>String</code> specifying the
			name of the charset, for
			example, <code>ISO-8859-1</code></DL>
</DD>
</DL>

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