Java URI Create addQueryParametersToUri(URI uri, Map parameters)

Description

add Query Parameters To Uri

License

Apache License

Declaration

public static URI addQueryParametersToUri(URI uri, Map<String, Object> parameters) throws URISyntaxException 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.net.URI;
import java.net.URISyntaxException;
import java.util.Map;
import static com.google.common.base.Strings.isNullOrEmpty;

public class Main {
    private static final String FIRST_PARAMETER_CONCATENATOR = "?";
    private static final String PARAMETERS_ASSIGNMENT = "=";
    private static final String SECOND_AND_LATER_CONCATENATOR = "&";

    public static URI addQueryParametersToUri(URI uri, Map<String, Object> parameters) throws URISyntaxException {
        StringBuilder urlParametersBuilder = new StringBuilder();
        if (uri == null) {
            throw new IllegalArgumentException("Define URL before URL parameters");
        }//from   w ww . j a  v a2  s .c  o  m
        urlParametersBuilder.append(uri.toString());
        String concatenator = FIRST_PARAMETER_CONCATENATOR;
        for (String paramName : parameters.keySet()) {
            validateParameters(paramName);
            urlParametersBuilder.append(concatenator);
            urlParametersBuilder.append(paramName);
            Object parameterValue = parameters.get(paramName);

            if (doesContainValue(parameterValue)) {
                urlParametersBuilder.append(PARAMETERS_ASSIGNMENT);
                urlParametersBuilder.append(parameterValue.toString());
            }
            concatenator = SECOND_AND_LATER_CONCATENATOR;
        }
        return new URI(urlParametersBuilder.toString());
    }

    private static void validateParameters(String paramName) {
        if (isNullOrEmpty(paramName)) {
            throw new IllegalArgumentException("Parameter name should be not null or empty");
        }
    }

    private static boolean doesContainValue(Object value) {
        return value != null && !value.toString().equals("");
    }
}

Related

1. addParameter(String name, String value, StringBuilder uri)
2. addParameters(Map parameters, StringBuilder uri)
3. addParams(final Map params, final StringBuilder uri)
4. addParams(URI uri, Map> params, Set overridenParams)
5. addQueryParamsToUri(String uri, Map queryParams)
6. addQueryString(final URI uri, final String queryString)
7. convertToURI(String uriOrPath)
8. convertToURI(String uriString, Map aliasMap)