Java URI to Path getPathParamValue(URI uri)

Description

get Path Param Value

License

Open Source License

Declaration

public static String getPathParamValue(URI uri) 

Method Source Code

//package com.java2s;
/*/*from www .  j  a v  a  2 s  . c  o  m*/
 * Copyright (c) 2014-2015 VMware, Inc. All Rights Reserved.
 *
 * 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;

public class Main {
    public static final String FORWARDING_URI_PARAM_NAME_PATH = "path";
    public static final String URI_QUERY_PARAM_LINK_CHAR = "&";
    public static final String URI_QUERY_PARAM_KV_CHAR = "=";

    public static String getPathParamValue(URI uri) {
        return getODataParamValueAsString(uri, FORWARDING_URI_PARAM_NAME_PATH);
    }

    public static String getODataParamValueAsString(final URI uri, final String uriParamOdataType) {
        String query = uri.getQuery();
        if (query == null || query.isEmpty()) {
            return null;
        }

        if (!query.contains(uriParamOdataType)) {
            return null;
        }

        Map<String, String> queryParams = parseUriQueryParams(uri);

        String paramValue = queryParams.get(uriParamOdataType);
        if (paramValue == null || paramValue.isEmpty()) {
            return null;
        }
        return paramValue;
    }

    public static Map<String, String> parseUriQueryParams(URI uri) {
        Map<String, String> params = new HashMap<String, String>();
        String query = uri.getQuery();
        if (query == null || query.isEmpty()) {
            return params;
        }

        String[] keyValuePairs = query.split(URI_QUERY_PARAM_LINK_CHAR);
        for (String kvPair : keyValuePairs) {
            String[] kvSplit = kvPair.split(URI_QUERY_PARAM_KV_CHAR);
            if (kvSplit.length < 2) {
                continue;
            }
            String key = kvSplit[0];
            String value = kvSplit[1];
            if (kvSplit.length > 2) {
                StringBuilder sb = new StringBuilder();
                sb.append(value);
                for (int i = 2; i < kvSplit.length; i++) {
                    sb.append(URI_QUERY_PARAM_KV_CHAR);
                    sb.append(kvSplit[i]);
                }
                value = sb.toString();
            }
            params.put(key, value);
        }
        return params;
    }
}

Related

1. getPath(URI uri)
2. getPathAndQueryURI(URI requestUri)
3. getPathAsArray(URI uri)
4. getPathByTrimmingEndingFileSeparator(URI uri)
5. getPathComponents(URI uri)
6. getPathSegments(URI uri)