Mega Code Archive
Decoding and encoding URLs
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/**
* 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
*
* 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.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.util.logging.Logger;
/**
* Utility class for decoding and encoding URLs
*
*/
public final class UrlUtils {
private static final String[] RESERVED_CHARS = {"+"};
private static final String[] ENCODED_CHARS = {"%2b"};
private UrlUtils() {
}
/**
* Decodes using URLDecoder - use when queries or form post values are decoded
* @param value value to decode
* @return
*/
public static String urlDecode(String value) {
try {
value = URLDecoder.decode(value, "UTF-8");
} catch (UnsupportedEncodingException e) {
System.out.println("UTF-8 encoding can not be used to decode " + value);
}
return value;
}
/**
* URL path segments may contain '+' symbols which should not be decoded into ' '
* This method replaces '+' with %2B and delegates to URLDecoder
* @param value value to decode
* @return
*/
public static String pathDecode(String value) {
// TODO: we actually need to do a proper URI analysis here according to
// http://tools.ietf.org/html/rfc3986
for (int i = 0; i < RESERVED_CHARS.length; i++) {
if (value.indexOf(RESERVED_CHARS[i]) != -1) {
value = value.replace(RESERVED_CHARS[i], ENCODED_CHARS[i]);
}
}
return urlDecode(value);
}
}
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