/*
* Copyright 2013-2016 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.
*
*/
package org.springframework.cloud.netflix.zuul.filters.route.support;
import java.io.IOException;
import java.util.Iterator;
import org.springframework.http.HttpOutputMessage;
import org.springframework.http.MediaType;
import org.springframework.http.converter.FormHttpMessageConverter;
import org.springframework.http.converter.HttpMessageNotWritableException;
import org.springframework.util.MultiValueMap;
import org.springframework.util.StreamUtils;
/**
* @author Jacques-Etienne Beaudet
*/
public class NoEncodingFormHttpMessageConverter extends FormHttpMessageConverter {
@SuppressWarnings("unchecked")
@Override
public void write(MultiValueMap<String, ?> map, MediaType contentType, HttpOutputMessage outputMessage)
throws IOException, HttpMessageNotWritableException {
MultiValueMap<String, String> form = (MultiValueMap<String, String>) map;
StringBuilder builder = new StringBuilder();
for (Iterator<String> nameIterator = form.keySet().iterator(); nameIterator.hasNext();) {
String name = nameIterator.next();
for (Iterator<String> valueIterator = form.get(name).iterator(); valueIterator.hasNext();) {
String value = valueIterator.next();
builder.append(name);
if (value != null) {
builder.append('=');
builder.append(value);
if (valueIterator.hasNext()) {
builder.append('&');
}
}
}
if (nameIterator.hasNext()) {
builder.append('&');
}
}
final byte[] bytes = builder.toString().getBytes(FormHttpMessageConverter.DEFAULT_CHARSET);
outputMessage.getHeaders().setContentLength(bytes.length);
outputMessage.getHeaders().setContentType(MediaType.APPLICATION_FORM_URLENCODED);
StreamUtils.copy(bytes, outputMessage.getBody());
}
}