Save URL contents to a file : URL « Network Protocol « Java

Home
Java
1.2D Graphics GUI
2.3D
3.Advanced Graphics
4.Ant
5.Apache Common
6.Chart
7.Class
8.Collections Data Structure
9.Data Type
10.Database SQL JDBC
11.Design Pattern
12.Development Class
13.EJB3
14.Email
15.Event
16.File Input Output
17.Game
18.Generics
19.GWT
20.Hibernate
21.I18N
22.J2EE
23.J2ME
24.JavaFX
25.JDK 6
26.JDK 7
27.JNDI LDAP
28.JPA
29.JSP
30.JSTL
31.Language Basics
32.Network Protocol
33.PDF RTF
34.Reflection
35.Regular Expressions
36.Scripting
37.Security
38.Servlets
39.Spring
40.Swing Components
41.Swing JFC
42.SWT JFace Eclipse
43.Threads
44.Tiny Application
45.Velocity
46.Web Services SOA
47.XML
Java » Network Protocol » URL 




Save URL contents to a file
    
/** 
 
 * The ObjectStyle Group Software License, version 1.1
 * ObjectStyle Group - http://objectstyle.org/
 
 * Copyright (c) 2002-2005, Andrei (Andrus) Adamchik and individual authors
 * of the software. 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 acknowlegement:
 *    "This product includes software developed by independent contributors
 *    and hosted on ObjectStyle Group web site (http://objectstyle.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 
 * 4. The names "ObjectStyle Group" and "Cayenne" must not be used to endorse
 *    or promote products derived from this software without prior written
 *    permission. For written permission, email
 *    "andrus at objectstyle dot org".
 
 * 5. Products derived from this software may not be called "ObjectStyle"
 *    or "Cayenne", nor may "ObjectStyle" or "Cayenne" appear in their
 *    names without prior written permission.
 
 * 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 THE OBJECTSTYLE GROUP 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 and hosted on ObjectStyle Group web site.  For more
 * information on the ObjectStyle Group, please see
 * <http://objectstyle.org/>.
 */

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.OutputStream;
import java.io.Serializable;
import java.lang.reflect.Member;
import java.lang.reflect.Modifier;
import java.net.URL;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.regex.Pattern;

import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;


import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;

/**
 * Contains various unorganized static utility methods used across Cayenne.
 
 @author Andrei Adamchik
 */
public class Util {

  /**
   * Copies file contents from source to destination. Makes up for the lack of file
   * copying utilities in Java
   */
  public static boolean copy(File source, File destination) {
      BufferedInputStream fin = null;
      BufferedOutputStream fout = null;
      try {
          int bufSize = 1024;
          fin = new BufferedInputStream(new FileInputStream(source), bufSize);
          fout = new BufferedOutputStream(new FileOutputStream(destination), bufSize);
          copyPipe(fin, fout, bufSize);
      }
      catch (IOException ioex) {
          return false;
      }
      catch (SecurityException sx) {
          return false;
      }
      finally {
          if (fin != null) {
              try {
                  fin.close();
              }
              catch (IOException cioex) {
              }
          }
          if (fout != null) {
              try {
                  fout.close();
              }
              catch (IOException cioex) {
              }
          }
      }
      return true;
  }

  /**
   * Save URL contents to a file.
   */
  public static boolean copy(URL from, File to) {
      BufferedInputStream urlin = null;
      BufferedOutputStream fout = null;
      try {
          int bufSize = 1024;
          urlin = new BufferedInputStream(
                  from.openConnection().getInputStream(),
                  bufSize);
          fout = new BufferedOutputStream(new FileOutputStream(to), bufSize);
          copyPipe(urlin, fout, bufSize);
      }
      catch (IOException ioex) {
          return false;
      }
      catch (SecurityException sx) {
          return false;
      }
      finally {
          if (urlin != null) {
              try {
                  urlin.close();
              }
              catch (IOException cioex) {
              }
          }
          if (fout != null) {
              try {
                  fout.close();
              }
              catch (IOException cioex) {
              }
          }
      }
      return true;
  }

  /**
   * Reads data from the input and writes it to the output, until the end of the input
   * stream.
   
   @param in
   @param out
   @param bufSizeHint
   @throws IOException
   */
  public static void copyPipe(InputStream in, OutputStream out, int bufSizeHint)
          throws IOException {
      int read = -1;
      byte[] buf = new byte[bufSizeHint];
      while ((read = in.read(buf, 0, bufSizeHint)) >= 0) {
          out.write(buf, 0, read);
      }
      out.flush();
  }

}

   
    
    
    
  














Related examples in the same category
1.Creating a URL with a single string.
2.Creating a URL With components
3.Converting Between a Filename Path and a URL
4.URL Constructor Test
5.URL Encode Test
6.Get URL Content
7.Get URL Parts
8.Read from a URL
9.Convert a URL to a URI
10.Converting Between a URL and a URI
11.Convert an absolute URI to a URL
12.URL Equality
13.Parsing a URL
14.URL Request
15.URL Get
16.A URL Retrieval Example
17.URL Reader
18.URL Connection ReaderURL Connection Reader
19.Using URLConnection
20.Parse URLParse URL
21.Resolve a relative URL
22.sends e-mail using a mailto: URLsends e-mail using a mailto: URL
23.Convert the absolute URI to a URL object
24.Convert URI to URL
25.Get parts of a url
26.Checks, whether the URL uses a file based protocol.
27.Add Parameter to URL
28.Returns the anchor value of the given URL
29.Extracts the file name from the URL.
30.Creates a relative url by stripping the common parts of the the url.
31.Checks, whether the URL points to the same service. A service is equal if the protocol, host and port are equal.
32.Extracts the base URL from the given URL by stripping the query and anchor part.
33.Returns true if the URL represents a path, and false otherwise.
34.Parse Port
35.Parse Host
36.Given a URL check if its a jar url(jar:!/archive) and if it is, extract the archive entry into the given dest directory and return a file URL to its location
37.check the validity of url pattern according to the spec.
38.A collection of File, URL and filename utility methods
39.Build Relative URL Path
40.Checks that the protocol://host:port part of two URLs are equal
41.Create valid URL from a system id
42.Extract URL File Name
43.Extract the URL page name from the given path
44.Get Domain Name
45.Get Locale From String
46.Get URL Last Modified
47.Get the name of the parent of the given URL path
48.Get the parent of the given URL path
49.Has URLContent Changed
50.Is URL a local file
51.Normalize an URL
52.Normalizes an URL
53.Resolve a relative URL string against an absolute URL string
54.ResourceBundle String manager
55.URL Path: standardize the creation of mutation of path-like structures
56.Utility class for building URLs
57.Add Default Port to a URL If Missing
58.Get Relative Path To URL
59.Download from a URL and save to a file
java2s.com  | Contact Us | Privacy Policy
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.