Java URL Value Check isValidURL(URL url)

Here you can find the source of isValidURL(URL url)

Description

is Valid URL

License

Open Source License

Declaration

public static boolean isValidURL(URL url) 

Method Source Code


//package com.java2s;
/*/*w ww.  j a v  a 2s.c  o  m*/
 * @(#)URLUtils.java
 * 
 * Copyright 2013 MBARI
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

import java.io.File;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLDecoder;

public class Main {
    public static boolean isValidURL(URL url) {
        try {

            if (isHttpUrl(url.toString())) {
                URLConnection connection = url.openConnection();

                if (connection instanceof HttpURLConnection) {
                    HttpURLConnection httpConnection = (HttpURLConnection) connection;

                    httpConnection.setConnectTimeout(1000);
                    httpConnection.connect();

                    int response = httpConnection.getResponseCode();

                    // System.out.println(
                    // "Response: " + response);
                    return (response == HttpURLConnection.HTTP_OK);
                }
            } else if (isFileUrl(url.toString())) {
                File f = new File(URLDecoder.decode(url.getFile(), "UTF-8"));
                if (f.exists()) {
                    return true;
                }
            }

            return false;
        } catch (Exception e) {
            return false;
        }
    }

    public static boolean isHttpUrl(String urlString) {

        // If this is a url http reference
        if (urlString.startsWith("http:")) {
            return true;
        }

        return false;
    }

    public static boolean isFileUrl(String urlString) {

        // If this is a url file reference
        if (urlString.startsWith("file:")) {
            return true;
        }

        return false;
    }
}

Related

  1. isValidURL(String URL_String)
  2. isValidURL(String urlStr)
  3. isValidURL(String urlStr)
  4. isValidURL(String urlString)
  5. isValidUrl(URI uri)
  6. isValidUrlDataType(URL value)
  7. isValidURLWithoutProtocol(String value)
  8. isVersionCompatible(URL url)
  9. isWellFormedURL(String url_str)