Java Scanner Usage parseQueryString(String queryString)

Description

parse Query String

License

Apache License

Declaration

public static LinkedHashMap<String, List<String>> parseQueryString(String queryString) 

Method Source Code

//package com.java2s;
/*//  w  w  w.  ja v a 2 s  . c  om
 * Copyright 2008-2011 the original author or authors.
 * 
 * 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.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Scanner;

public class Main {
    public static LinkedHashMap<String, List<String>> parseQueryString(String queryString) {
        final Scanner scanner = new Scanner(queryString);
        scanner.useDelimiter("&");
        LinkedHashMap<String, List<String>> res = new LinkedHashMap<String, List<String>>();
        while (scanner.hasNext()) {
            final String[] nameValue = scanner.next().split("=");
            if (nameValue.length == 0 || nameValue.length > 2) {
                throw new IllegalArgumentException("bad parameter");
            }
            final String name = nameValue[0];
            String value = null;
            if (nameValue.length == 2) {
                value = nameValue[1];
            }
            if (value == null) {
                value = "";
            }
            putVarVal(res, name, value);
        }
        return res;
    }

    public static void putVarVal(Map<String, List<String>> m, String key, String val) {
        if (key == null || val == null) {
            throw new IllegalArgumentException();
        }
        List<String> o = m.get(key);
        if (o == null) {
            o = new LinkedList<String>();
            m.put(key, o);
        }
        o.add(val);
    }
}

Related

1. OperasiMasukan()
2. parameterInput(int start, int end)
3. parse_str_vector(String str_vector)
4. parseDailyData(final List lines, final List priceValues, final List dailyPriceDate)
5. parseExperimentName(String name)
6. parseTime(String input)
7. pathTokenList(String path)
8. pressEnterToContinue()
9. processLine(String aLine)