The following method reads the binary representation of an image from the database and streams the content by using the javax.ws.rs.core.StreamingOutput class. The method is annotated with @Produces(MediaType.APPLICATION_OCTET_STREAM) to indicate that the response is in a binary form:

//Other imports are omitted for brevity 
import javax.ws.rs.core.StreamingOutput; 
 
@GET 
@Path("/{empId}/image") 
@Produces(MediaType.APPLICATION_OCTET_STREAM) 
public Response getImage(final @PathParam("empId") Integer id) throws Exception { 
 
  StreamingOutput outputImage = new StreamingOutput() { 
     @Override 
     Public void write(OutputStream output)  
         throws IOException { 
    EmployeeImage empImg = findEmployeeImageEntity(id); 
    byte[] buf = empImg.getImage(); 
    output.write(buf); 
    output.flush(); 
     } 
  }; 
  
  ResponseBuilder response = Response.ok((Object) outputImage);
  response.header("Content-Disposition", "inline;filename=image.jpeg");
  return response.build();
} 

You can use the preceding RESTful web API directly with the <img> component present in the HTML page, as shown in the following HTML snippet. The employees/100/image URI points to the RESTful web API that we built for reading the image content:

<img alt="Employee image" src="employees/100/image" id="id"/>