baggage.hypertoolkit.html.UrlParamEncoder.java Source code

Introduction

Here is the source code for baggage.hypertoolkit.html.UrlParamEncoder.java

Source

/*
 * The MIT License
 *
 * Copyright (c) 2010 Fabrice Medio
 *
 * 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.
 */

package baggage.hypertoolkit.html;

import baggage.Bag;
import org.apache.commons.lang3.StringUtils;

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.Collection;

public class UrlParamEncoder {
    public String asUrl(Bag<String, String> bag) {
        StringBuilder url = new StringBuilder();
        if (bag.isEmpty()) {
            return "";
        }

        url.append("?");
        for (String key : bag.keySet()) {
            Collection<String> values = bag.getValues(key);
            for (String value : values) {
                try {
                    url.append(URLEncoder.encode(StringUtils.stripToEmpty(key), "UTF-8"));
                    url.append("=");
                    url.append(URLEncoder.encode(StringUtils.stripToEmpty(value), "UTF-8"));
                    url.append("&");
                } catch (UnsupportedEncodingException e) {
                    throw new RuntimeException(e);
                }
            }
        }
        url.deleteCharAt(url.length() - 1);
        return url.toString();
    }
}