org.jboss.resteasy.plugins.providers.InputStreamProvider Maven / Gradle / Ivy
package org.jboss.resteasy.plugins.providers;
import org.jboss.resteasy.util.HttpHeaderNames;
import org.jboss.resteasy.util.NoContent;
import javax.ws.rs.Consumes;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyReader;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.Provider;
import javax.xml.transform.stream.StreamSource;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
/**
* @author BillBurke
* @version $Revision: 1 $
*/
@Provider
@Produces("*/*")
@Consumes("*/*")
public class InputStreamProvider implements MessageBodyReader, MessageBodyWriter
{
public boolean isReadable(Class type, Type genericType, Annotation[] annotations, MediaType mediaType)
{
return type.equals(InputStream.class);
}
public InputStream readFrom(Class type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap httpHeaders, InputStream entityStream) throws IOException
{
if (NoContent.isContentLengthZero(httpHeaders)) return new ByteArrayInputStream(new byte[0]);
return entityStream;
}
public boolean isWriteable(Class type, Type genericType, Annotation[] annotations, MediaType mediaType)
{
return InputStream.class.isAssignableFrom(type);
}
public long getSize(InputStream inputStream, Class type, Type genericType, Annotation[] annotations, MediaType mediaType)
{
return -1;
}
public void writeTo(InputStream inputStream, Class type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap httpHeaders, OutputStream entityStream) throws IOException
{
try
{
int c = inputStream.read();
if (c == -1)
{
httpHeaders.putSingle(HttpHeaderNames.CONTENT_LENGTH, Integer.toString(0));
entityStream.write(new byte[0]); // fix RESTEASY-204
return;
}
else
entityStream.write(c);
ProviderHelper.writeTo(inputStream, entityStream);
}
finally
{
inputStream.close();
}
}
}