Java Resource Load getResourceUri(final String packageToScan, final ClassLoader classLoader)

Description

get Resource Uri

License

Apache License

Declaration

private static URI getResourceUri(final String packageToScan, final ClassLoader classLoader) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 * // w w w  .  j a va  2s.  c  o  m
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 ******************************************************************************/

import java.net.MalformedURLException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;

public class Main {
    private static final char RESOURCE_SEPARATOR = '/';
    private static final char PACKAGE_SEPARATOR = '.';

    private static URI getResourceUri(final String packageToScan, final ClassLoader classLoader) {
        String folderToScan = packageToScan.replace(PACKAGE_SEPARATOR, RESOURCE_SEPARATOR);
        URL url = classLoader.getResource(folderToScan);
        if (url == null) {
            throw new IllegalArgumentException("No folder to scan found for package '" + packageToScan + "'.");
        }
        try {
            if (url.getPath().contains(" ")) {
                url = new URL(url.getProtocol(), url.getHost(), url.getPort(), url.getPath().replace(" ", "%20"));
            }
            return url.toURI();
        } catch (URISyntaxException e) {
            throw new IllegalArgumentException(
                    "Invalid folder path for path URL '" + url + "' from thread context class loader.");
        } catch (MalformedURLException e) {
            throw new IllegalArgumentException(
                    "Invalid folder path for path URL '" + url + "' from thread context class loader.");
        }
    }
}

Related

1. getResourceStream(String pathToResource)
2. getResourceStream(String resource, Class root)
3. getResourceStreamFromClasspath(Class clazz, String resourceName)
4. getResourceStreamInPackage(Class clazz, String name)
5. getResourceString(String filename)
6. getResourceUrl(final Class aClass, final String aPath)
7. getResourceUrl(final String resourcePath)
8. getResourceUrl(String path, String extension, ClassLoader loader)
9. getResourceURL(String resourcePath)