IntegerMessageBodyWriter.java

package de.anycook.api.providers.messagebodywriters;

import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.Provider;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;

/**
 * @author Jan Graßegger<jan@anycook.de>
 */
@Provider
@Produces({"text/plain", "application/json"})
public class IntegerMessageBodyWriter implements MessageBodyWriter<Integer>{

    @Override
    public boolean isWriteable(Class<?> type, Type type1, Annotation[] antns, MediaType mt) {
        return true;
    }

    @Override
    public long getSize(Integer t, Class<?> type, Type type1, Annotation[] antns, MediaType mt) {
        return -1;
    }

    @Override
    public void writeTo(Integer integer, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType,
                        MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream)
            throws IOException, WebApplicationException {
        entityStream.write(integer.toString().getBytes());
    }
}