Java URL Create buildURL(String spec, boolean trailingSlash)

Description

Builds a URL with the given specification

License

Open Source License

Parameter

Parameter	Description
spec	the URL specification
trailingSlash	flag to indicate a trailing slash on the spec

Return

a URL

Declaration

@SuppressWarnings("deprecation")
public static URL buildURL(String spec, boolean trailingSlash) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright (c) 2006, 2010 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * //from   w  w w  .ja v a 2  s.com
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/

import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;

public class Main {
    /**
     * Builds a URL with the given specification
     * @param spec the URL specification
     * @param trailingSlash flag to indicate a trailing slash on the spec
     * @return a URL
     */
    @SuppressWarnings("deprecation")
    public static URL buildURL(String spec, boolean trailingSlash) {
        if (spec == null)
            return null;
        boolean isFile = spec.startsWith("file:"); //$NON-NLS-1$
        try {
            if (isFile)
                return adjustTrailingSlash(new File(spec.substring(5)).toURL(), trailingSlash);
            return new URL(spec);
        } catch (MalformedURLException e) {
            // if we failed and it is a file spec, there is nothing more we can do
            // otherwise, try to make the spec into a file URL.
            if (isFile)
                return null;
            try {
                return adjustTrailingSlash(new File(spec).toURL(), trailingSlash);
            } catch (MalformedURLException e1) {
                return null;
            }
        }
    }

    private static URL adjustTrailingSlash(URL url, boolean trailingSlash) throws MalformedURLException {
        String file = url.getFile();
        if (trailingSlash == (file.endsWith("/"))) //$NON-NLS-1$
            return url;
        file = trailingSlash ? file + "/" : file.substring(0, file.length() - 1); //$NON-NLS-1$
        return new URL(url.getProtocol(), url.getHost(), file);
    }
}

Related

1. buildURL(String host, String path, Map params)
2. buildURL(String id)
3. buildUrl(String repositoryUrl, String resourceUrl)
4. buildURL(String spec)
5. buildURL(String spec)
6. buildUrl(String url)
7. buildURL(String url)
8. buildURL(String url)
9. buildUrl(String url, HashMap params)