feign.form.FormEncodedDataProcessor Maven / Gradle / Ivy

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/*
 * Copyright 2017 Artem Labazin .
 *
 * 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.
 */
package feign.form;

import static feign.Util.UTF_8;

import feign.RequestTemplate;
import java.net.URLEncoder;
import java.util.Map;
import lombok.SneakyThrows;
import lombok.val;

/**
 * Form urlencoded implementation of {@link feign.form.FormDataProcessor}.
 *
 * @author Artem Labazin 
 * @since 30.04.2016
 */
public class FormEncodedDataProcessor implements FormDataProcessor {

    public static final String CONTENT_TYPE;

    static {
        CONTENT_TYPE = "application/x-www-form-urlencoded";
    }

    @Override
    public void process (Map data, RequestTemplate template) {
        val body = new StringBuilder();
        for (Map.Entry entry : data.entrySet()) {
            if (body.length() > 0) {
                body.append('&');
            }
            body.append(createKeyValuePair(entry));
        }

        template.header("Content-Type", CONTENT_TYPE);
        template.body(body.toString());
    }

    @Override
    public String getSupportetContentType () {
        return CONTENT_TYPE;
    }

    @SneakyThrows
    private String createKeyValuePair (Map.Entry entry) {
        return new StringBuilder()
                .append(URLEncoder.encode(entry.getKey(), UTF_8.name()))
                .append('=')
                .append(URLEncoder.encode(entry.getValue().toString(), UTF_8.name()))
                .toString();
    }
}