urldumper.java

来自「一个小公司要求给写的很简单的任务管理系统。」· Java 代码 · 共 78 行

/*
 * @(#)URLDumper.java	1.3 05/11/17
 * 
 * Copyright (c) 2006 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:
 * 
 * -Redistribution of source code must retain the above copyright notice, this
 *  list of conditions and the following disclaimer.
 * 
 * -Redistribution 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.
 * 
 * Neither the name of Sun Microsystems, Inc. or the names of contributors may 
 * be used to endorse or promote products derived from this software without 
 * specific prior written permission.
 * 
 * This software is provided "AS IS," without a warranty of any kind. ALL 
 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING
 * ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
 * OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN MIDROSYSTEMS, INC. ("SUN")
 * AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE
 * AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
 * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST 
 * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, 
 * INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY 
 * OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, 
 * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
 * 
 * You acknowledge that this software is not designed, licensed or intended
 * for use in the design, construction, operation or maintenance of any
 * nuclear facility.
 */

import java.io.*;
import java.net.*;

/**
 * A simple example to illustrate using a URL to access a resource
 * and then store the result to a File.
 * <P>
 * Any type of URL can be used:  http, https, ftp, etc.
 *
 * @author Brad R. Wetmore
 * @author Mark Reinhold
 * @version 1.3, 05/11/17
 */
public class URLDumper {
    public static void main(String[] args) throws Exception {

	if (args.length != 2) {
	    System.out.println("Usage:  URLDumper <URL> <file>");
	    System.exit(1);
	}

	String location = args[0];
	String file = args[1];

	URL url = new URL(location);
	FileOutputStream fos = new FileOutputStream(file);

	byte [] bytes = new byte [4096];

	InputStream is = url.openStream();

	int read;

	while ((read = is.read(bytes)) != -1) {
	    fos.write(bytes, 0, read);
	}

	is.close();
	fos.close();
    }
}