org.jboss.resteasy.plugins.interceptors.encoding.ServerContentEncodingAnnotationFilter Maven / Gradle / Ivy
package org.jboss.resteasy.plugins.interceptors.encoding;
import org.jboss.resteasy.spi.HttpRequest;
import org.jboss.resteasy.util.AcceptParser;
import javax.annotation.Priority;
import javax.ws.rs.ConstrainedTo;
import javax.ws.rs.Priorities;
import javax.ws.rs.RuntimeType;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.ext.WriterInterceptor;
import javax.ws.rs.ext.WriterInterceptorContext;
import java.io.IOException;
import java.util.List;
import java.util.Set;
/**
* @author Bill Burke
* @version $Revision: 1 $
*/
@ConstrainedTo(RuntimeType.SERVER)
@Priority(Priorities.HEADER_DECORATOR)
public class ServerContentEncodingAnnotationFilter implements WriterInterceptor
{
protected
@Context
HttpRequest request;
Set encodings;
public ServerContentEncodingAnnotationFilter(Set encodings)
{
this.encodings = encodings;
}
@Override
public void aroundWriteTo(WriterInterceptorContext context) throws IOException, WebApplicationException
{
List acceptEncoding = request.getHttpHeaders().getRequestHeaders().get(HttpHeaders.ACCEPT_ENCODING);
if (acceptEncoding != null)
{
StringBuffer buf = new StringBuffer();
for (String accept : acceptEncoding)
{
if (buf.length() > 0) buf.append(",");
buf.append(accept);
}
List accepts = AcceptParser.parseAcceptHeader(buf.toString());
for (String encoding : accepts)
{
if (encodings.contains(encoding.toLowerCase()))
{
context.getHeaders().putSingle(HttpHeaders.CONTENT_ENCODING, encoding);
break;
}
}
}
context.proceed();
}
}