getmessage.java

jxta_src_2.41b jxta 2.41b 最新版源码 from www.jxta.org

/*
 *  Copyright (c) 2001 Sun Microsystems, Inc.  All rights
 *  reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *
 *  1. Redistributions of source code must retain the above copyright
 *  notice, this list of conditions and the following disclaimer.
 *
 *  2. Redistributions in binary form must reproduce the above copyright
 *  notice, this list of conditions and the following disclaimer in
 *  the documentation and/or other materials provided with the
 *  distribution.
 *
 *  3. The end-user documentation included with the redistribution,
 *  if any, must include the following acknowledgment:
 *  "This product includes software developed by the
 *  Sun Microsystems, Inc. for Project JXTA."
 *  Alternately, this acknowledgment may appear in the software itself,
 *  if and wherever such third-party acknowledgments normally appear.
 *
 *  4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA" must
 *  not be used to endorse or promote products derived from this
 *  software without prior written permission. For written
 *  permission, please contact Project JXTA at http://www.jxta.org.
 *
 *  5. Products derived from this software may not be called "JXTA",
 *  nor may "JXTA" appear in their name, without prior written
 *  permission of Sun.
 *
 *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 *  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 *  DISCLAIMED.  IN NO EVENT SHALL SUN MICROSYSTEMS OR
 *  ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 *  USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 *  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 *  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 *  OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 *  SUCH DAMAGE.
 *  ====================================================================
 *
 *  This software consists of voluntary contributions made by many
 *  individuals on behalf of Project JXTA.  For more
 *  information on Project JXTA, please see
 *  <http://www.jxta.org/>.
 *
 *  This license is based on the BSD license adopted by the Apache Foundation.
 *
 *  $Id: GetMessage.java,v 1.2 2003/08/12 10:33:35 gonzo Exp $
 */

package net.jxta.test.http;

import java.security.Security;
import java.security.Provider;
import java.net.URL;
import java.net.URLConnection;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.io.IOException;
import java.io.BufferedReader;
import java.io.CharArrayWriter;
import java.io.InputStreamReader;
import java.io.InputStream;
import java.util.Collections;
import java.util.Map;
import java.util.HashMap;
import java.util.List;
import java.util.ArrayList;
import java.util.Iterator;

/**
 *
 * @version $Id: GetMessage.java,v 1.2 2003/08/12 10:33:35 gonzo Exp $
 *
 * @author james todd [gonzo at jxta dot org]
 */

public class GetMessage
    implements Dispatchable {

    protected static boolean VERBOSE = false;

    protected String method = null;
    protected Message message = null;
    protected URLConnection connection = null;

    private URL url = null;
    private boolean isUnicodeEncoding = false;

    public GetMessage() {
        this(null, null);
    }

    public GetMessage(URL url) {
        this(url, null);
    }

    public GetMessage(URL url, Message message) {
        this.url = url;
        this.method = Constants.HTTP.GET;
        this.message = message;
    }

    public URL getURL() {
        return this.url;
    }

    public void setURL(URL url) {
        this.url = url;
    }

    public String getHeader(String key) {
        return ((this.message != null) ?
                (String)this.message.getHeader(key) : null);
    }

    public Iterator getHeaderKeys() {
        return ((this.message != null) ?
                this.message.getHeaderKeys() :
                Collections.EMPTY_LIST.iterator());
    }

    public void setHeaders(Map headers) {
        Iterator keys = headers.keySet().iterator();

        while (keys.hasNext()) {
            String key = (String)keys.next();
            String value = (String)headers.get(key);

            setHeader(key, value);
        }
    }

    public void setHeader(String key, String value) {
        if (this.message == null) {
            this.message = new Message();
        }

        this.message.setHeader(key, value);
    }

    public void removeHeader(String key)
    throws NullPointerException {
        if (key == null) {
            throw new NullPointerException("null key");
        }

        if (this.message != null) {
            this.message.removeHeader(key);
        }
    }

    public boolean isUnicodeEncoding() {
        return this.isUnicodeEncoding;
    }

    public void setUnicodeEncoding(boolean isUnicodeEncoding) {
        this.isUnicodeEncoding = isUnicodeEncoding;
    }

    public Message dispatch()
    throws IOException {
        return dispatch(getURL());
    }

    public void close() {
        closeConnection();
    }

    public String toString() {
        java.lang.Class clazz = getClass();
        java.lang.reflect.Field[] fields = clazz.getDeclaredFields();
        java.util.HashMap map = new java.util.HashMap();
        java.lang.String object = null;
        java.lang.Object value = null;

        for (int i = 0; i < fields.length; i++) {
            try {
                object = fields[i].getName();
                value = fields[i].get(this);

                map.put(object, (value != null) ? value : "null");
            } catch (IllegalAccessException iae) {
                iae.printStackTrace();
            }
        }

        if (clazz.getSuperclass().getSuperclass() != null) {
            map.put("super", clazz.getSuperclass().toString());
        }

        return clazz.getName() + map;
    }

    protected void setMessage(Message message) {
        this.message = message;
    }

    protected String getBody() {
        return ((this.message != null &&
                 this.message.hasBody()) ?
                (String)this.message.getBody() : null);
    }

    protected void setBody(String body) {
        if (this.message == null) {
            this.message = new Message();
        }

        this.message.setBody((body != null) ? body : "");
    }

    protected Message dispatch(URL u)
    throws IOException {
        Message response = null;
        URL to = u;
        URL from = null;

        while (to != null) {
            try {
                this.connection = openConnection(to);

                try {
                    doGet();
                } catch (IOException ioe) {
                    throw new IOException(ioe.getMessage());
                }

                response = getResponse(u);

                closeConnection();
            } catch (NullPointerException npe) {
                if (VERBOSE) {
                    npe.printStackTrace();
                }
            }

            from = to;
            to = getLocation(from, response);

            if (to != null) {
                this.message = response;
            }
        }

        response = resolveFrames(response, from);

        return response;
    }

    protected URLConnection openConnection(URL u)
    throws IllegalStateException, IOException {
        URLConnection connection = null;

        if (u == null) {
            throw new IllegalStateException("null url");
        }

        if (u.getProtocol().equalsIgnoreCase(Constants.Protocol.HTTP) ||
            u.getProtocol().equalsIgnoreCase(Constants.Protocol.HTTPS)) {
            connection = openHTTPConnection(u);
        } else {