Jetty example source code file (MultiPartOutputStream.java)

This example Jetty source code file (MultiPartOutputStream.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Jetty tags/keywords

content-type, content-type, exception, filteroutputstream, io, ioexception, ioexception, multipart_mixed, multipart_x_mixed_replace, multipartoutputstream, multipartoutputstream, outputstream, string, string

The Jetty MultiPartOutputStream.java source code

// ========================================================================
// Copyright 1996-2005 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at 
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ========================================================================

package org.mortbay.util;

import java.io.FilterOutputStream;
import java.io.IOException;
import java.io.OutputStream;


/* ================================================================ */
/** Handle a multipart MIME response.
 *
 * @author Greg Wilkins
 * @author Jim Crossley
*/
public class MultiPartOutputStream extends FilterOutputStream
{
    /* ------------------------------------------------------------ */
    private static byte[] __CRLF;
    private static byte[] __DASHDASH;
    
    public static String MULTIPART_MIXED="multipart/mixed";
    public static String MULTIPART_X_MIXED_REPLACE="multipart/x-mixed-replace";
    static
    {
        try
        {
            __CRLF="\015\012".getBytes(StringUtil.__ISO_8859_1);
            __DASHDASH="--".getBytes(StringUtil.__ISO_8859_1);
        }
        catch (Exception e) {e.printStackTrace(); System.exit(1);}
    }
    
    /* ------------------------------------------------------------ */
    private String boundary;
    private byte[] boundaryBytes;

    /* ------------------------------------------------------------ */
    private boolean inPart=false;    
    
    /* ------------------------------------------------------------ */
    public MultiPartOutputStream(OutputStream out)
    throws IOException
    {
        super(out);

        boundary = "jetty"+System.identityHashCode(this)+
        Long.toString(System.currentTimeMillis(),36);
        boundaryBytes=boundary.getBytes(StringUtil.__ISO_8859_1);

        inPart=false;
    }

    

    /* ------------------------------------------------------------ */
    /** End the current part.
     * @exception IOException IOException
     */
    public void close()
         throws IOException
    {
        if (inPart)
            out.write(__CRLF);
        out.write(__DASHDASH);
        out.write(boundaryBytes);
        out.write(__DASHDASH);
        out.write(__CRLF);
        inPart=false;
        super.close();
    }
    
    /* ------------------------------------------------------------ */
    public String getBoundary()
    {
        return boundary;
    }

    public OutputStream getOut() {return out;}
    
    /* ------------------------------------------------------------ */
    /** Start creation of the next Content.
     */
    public void startPart(String contentType)
         throws IOException
    {
        if (inPart)
            out.write(__CRLF);
        inPart=true;
        out.write(__DASHDASH);
        out.write(boundaryBytes);
        out.write(__CRLF);
        out.write(("Content-Type: "+contentType).getBytes(StringUtil.__ISO_8859_1));
        out.write(__CRLF);
        out.write(__CRLF);
    }
        
    /* ------------------------------------------------------------ */
    /** Start creation of the next Content.
     */
    public void startPart(String contentType, String[] headers)
         throws IOException
    {
        if (inPart)
            out.write(__CRLF);
        inPart=true;
        out.write(__DASHDASH);
        out.write(boundaryBytes);
        out.write(__CRLF);
        out.write(("Content-Type: "+contentType).getBytes(StringUtil.__ISO_8859_1));
        out.write(__CRLF);
        for (int i=0;headers!=null && i<headers.length;i++)
        {
            out.write(headers[i].getBytes(StringUtil.__ISO_8859_1));
            out.write(__CRLF);
        }
        out.write(__CRLF);
    }
    
}