/*
* $Id: HttpRequestBodyToParamMap.java 20247 2010-11-18 14:23:04Z dirk.olmes $
* --------------------------------------------------------------------------------------
* Copyright (c) MuleSoft, Inc. All rights reserved. http://www.mulesoft.com
*
* The software in this package is published under the terms of the CPAL v1.0
* license, a copy of which has been included with this distribution in the
* LICENSE.txt file.
*/
package org.mule.transport.http.transformers;
import org.mule.api.MuleMessage;
import org.mule.api.transformer.TransformerException;
import org.mule.transformer.AbstractMessageTransformer;
import org.mule.transformer.types.DataTypeFactory;
import org.mule.transport.http.HttpConstants;
import org.mule.util.StringUtils;
import java.net.URI;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.commons.codec.net.URLCodec;
public class HttpRequestBodyToParamMap extends AbstractMessageTransformer
{
public HttpRequestBodyToParamMap()
{
registerSourceType(DataTypeFactory.OBJECT);
setReturnDataType(DataTypeFactory.OBJECT);
}
@Override
public Object transformMessage(MuleMessage message, String outputEncoding) throws TransformerException
{
Map<String, Object> paramMap = new HashMap<String, Object>();
try
{
String httpMethod = message.getInboundProperty("http.method");
String contentType = message.getInboundProperty("Content-Type");
boolean isGet = HttpConstants.METHOD_GET.equalsIgnoreCase(httpMethod);
boolean isPost = HttpConstants.METHOD_POST.equalsIgnoreCase(httpMethod);
boolean isUrlEncoded = false;
if (contentType != null)
{
isUrlEncoded = contentType.startsWith("application/x-www-form-urlencoded");
}
if (!(isGet || (isPost && isUrlEncoded)))
{
throw new Exception("The HTTP method or content type is unsupported!");
}
String queryString = null;
if (isGet)
{
URI uri = new URI(message.getPayloadAsString(outputEncoding));
queryString = uri.getRawQuery();
}
else if (isPost)
{
queryString = new String(message.getPayloadAsBytes());
}
if (StringUtils.isNotBlank(queryString))
{
addQueryStringToParameterMap(queryString, paramMap, outputEncoding);
}
}
catch (Exception e)
{
throw new TransformerException(this, e);
}
return paramMap;
}
protected void addQueryStringToParameterMap(String queryString, Map<String, Object> paramMap,
String outputEncoding) throws Exception
{
String[] pairs = queryString.split("&");
for (String pair : pairs)
{
String[] nameValue = pair.split("=");
if (nameValue.length == 2)
{
URLCodec codec = new URLCodec(outputEncoding);
String key = codec.decode(nameValue[0]);
String value = codec.decode(nameValue[1]);
addToParameterMap(paramMap, key, value);
}
}
}
@SuppressWarnings("unchecked")
protected void addToParameterMap(Map<String, Object> paramMap, String key, String value)
{
Object existingValue = paramMap.get(key);
if (existingValue != null)
{
List<Object> values;
if (existingValue instanceof List<?>)
{
values = (List<Object>) existingValue;
}
else
{
values = Arrays.asList(existingValue);
}
values.add(value);
paramMap.put(key, values);
}
else
{
paramMap.put(key, value);
}
}
@Override
public boolean isAcceptNull()
{
return false;
}
}