/**
* ***************************************************************************
* Copyright (c) 2010 Qcadoo Limited
* Project: Qcadoo Framework
* Version: 1.4
*
* This file is part of Qcadoo.
*
* Qcadoo is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published
* by the Free Software Foundation; either version 3 of the License,
* or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
* ***************************************************************************
*/
package com.qcadoo.view.internal;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.nio.charset.Charset;
import org.apache.commons.io.IOUtils;
import org.json.JSONException;
import org.json.JSONObject;
import org.springframework.http.HttpInputMessage;
import org.springframework.http.HttpOutputMessage;
import org.springframework.http.MediaType;
import org.springframework.http.converter.AbstractHttpMessageConverter;
import org.springframework.http.converter.HttpMessageNotReadableException;
public final class JsonHttpMessageConverter extends AbstractHttpMessageConverter<JSONObject> {
public static final Charset CHARSET = Charset.forName("UTF-8");
public static final MediaType MEDIA_TYPE = new MediaType("application", "json", CHARSET);
public JsonHttpMessageConverter() {
super(MEDIA_TYPE);
}
@Override
protected boolean supports(final Class<?> clazz) {
return JSONObject.class.isAssignableFrom(clazz);
}
@Override
protected JSONObject readInternal(final Class<? extends JSONObject> clazz, final HttpInputMessage inputMessage)
throws IOException {
String body = IOUtils.toString(inputMessage.getBody(), CHARSET.name());
try {
return new JSONObject(body);
} catch (JSONException e) {
throw new HttpMessageNotReadableException(e.getMessage(), e);
}
}
@Override
protected void writeInternal(final JSONObject json, final HttpOutputMessage outputMessage) throws IOException {
Writer writer = null;
try {
writer = new OutputStreamWriter(outputMessage.getBody(), CHARSET);
writer.write(json.toString());
writer.flush();
} finally {
IOUtils.closeQuietly(writer);
}
}
}