Java Map to String toQueryString(Map ps)

Description

to Query String

License

Apache License

Declaration

public static String toQueryString(Map<String, String> ps) 

Method Source Code

//package com.java2s;
/*/* w w  w  . j  a v  a 2 s  .  co  m*/
 * Copyright 1999-2011 Alibaba Group.
 *  
 * 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.*;

public class Main {
    public static String toQueryString(Map<String, String> ps) {
        StringBuilder buf = new StringBuilder();
        if (ps != null && ps.size() > 0) {
            for (Map.Entry<String, String> entry : new TreeMap<String, String>(ps).entrySet()) {
                String key = entry.getKey();
                String value = entry.getValue();
                if (key != null && key.length() > 0 && value != null && value.length() > 0) {
                    if (buf.length() > 0) {
                        buf.append("&");
                    }
                    buf.append(key);
                    buf.append("=");
                    buf.append(value);
                }
            }
        }
        return buf.toString();
    }
}

Related

1. mapToString(String itemName, Map map)
2. mapToStringArray(Map map)
3. mapToStringBuilder(Map m)
4. mapToStringList(Map map, String pairDelimiter, String listDelimiter)
5. mapToStringMap(final Object map)
6. toStr(Map msg)
7. toString(final Map tokens)
8. toString(Map varnames_to_Terms)
9. toString(Map attributes)