Java URL Query Parse parseQuery(String query)

Description

Parsers the query string of the URI into a map of key-value pairs

License

Apache License

Declaration

public static Map<String, String> parseQuery(String query) 

Method Source Code

//package com.java2s;
/**/*ww  w  .  j  a v a 2s  .  c om*/
 *
 * Copyright 2004 Protique Ltd
 *
 * Licensed 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.net.URI;

import java.util.HashMap;
import java.util.Map;
import java.util.StringTokenizer;

public class Main {
    /**
     * Parsers the query string of the URI into a map of key-value pairs
     */
    public static Map<String, String> parseQuery(URI uri) {
        return parseQuery(uri.getQuery());
    }

    /**
     * Parsers the query string of the URI into a map of key-value pairs
     */
    public static Map<String, String> parseQuery(String query) {
        Map<String, String> answer = new HashMap<String, String>();
        if (query != null) {
            StringTokenizer iter = new StringTokenizer(query, "&");
            while (iter.hasMoreTokens()) {
                String pair = iter.nextToken();
                addKeyValuePair(answer, pair);
            }
        }
        return answer;
    }

    protected static void addKeyValuePair(Map<String, String> answer, String pair) {
        int idx = pair.indexOf('=');
        String name = null;
        String value = null;
        if (idx >= 0) {
            name = pair.substring(0, idx);
            if (++idx < pair.length()) {
                value = pair.substring(idx);
            }
        } else {
            name = pair;
        }
        answer.put(name, value);
    }
}

Related

1. parse(String query, String encoding)
2. parseInstructions(final String query)
3. parseParameters( Optional queryString)
4. parseParameters(String query)
5. parseQuery(String query)
6. parseQuery(String query)
7. parseQuery(String query)
8. parseQuery(String query)
9. parseQuery(String queryString)