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package com.sun.jersey.core.impl.provider.entity;
import com.sun.jersey.core.provider.AbstractMessageReaderWriterProvider;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.awt.image.RenderedImage;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.Iterator;
import javax.imageio.ImageIO;
import javax.imageio.ImageReader;
import javax.imageio.ImageWriter;
import javax.imageio.stream.ImageInputStream;
import javax.ws.rs.Consumes;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
/**
*
* @author [email protected]
*/
@Produces("image/*")
@Consumes({"image/*", "application/octet-stream"})
public final class RenderedImageProvider extends AbstractMessageReaderWriterProvider {
private static final MediaType IMAGE_MEDIA_TYPE = new MediaType("image", "*");
public boolean isReadable(Class type, Type genericType, Annotation[] annotations, MediaType mediaType) {
return RenderedImage.class == type || BufferedImage.class == type;
}
public RenderedImage readFrom(
Class type,
Type genericType,
Annotation annotations[],
MediaType mediaType,
MultivaluedMap httpHeaders,
InputStream entityStream) throws IOException {
if (IMAGE_MEDIA_TYPE.isCompatible(mediaType)) {
Iterator readers = ImageIO.getImageReadersByMIMEType(mediaType.toString());
if (!readers.hasNext())
throw new IOException("The image-based media type " + mediaType + "is not supported for reading");
ImageReader reader = readers.next();
ImageInputStream in = ImageIO.createImageInputStream(entityStream);
reader.setInput(in, true, true);
BufferedImage bi = reader.read(0, reader.getDefaultReadParam());
in.close();
reader.dispose();
return bi;
} else {
return ImageIO.read(entityStream);
}
}
public boolean isWriteable(Class type, Type genericType, Annotation[] annotations, MediaType mediaType) {
return RenderedImage.class.isAssignableFrom(type);
}
public void writeTo(
RenderedImage t,
Class type,
Type genericType,
Annotation annotations[],
MediaType mediaType,
MultivaluedMap httpHeaders,
OutputStream entityStream) throws IOException {
String formatName = getWriterFormatName(mediaType);
if (formatName == null)
throw new IOException("The image-based media type " + mediaType + " is not supported for writing");
ImageIO.write(t, formatName, entityStream);
}
private String getWriterFormatName(MediaType t) {
return getWriterFormatName(t.toString());
}
private String getWriterFormatName(String t) {
Iterator i = ImageIO.getImageWritersByMIMEType(t);
if (!i.hasNext()) return null;
return i.next().getOriginatingProvider().getFormatNames()[0];
}
}