Servlet返回图片

public class PictureServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

	public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
		doPost(request, response);
	}
	
	public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException {
		String imagePath = "C:\\1.gif";			
		FileInputStream fis = new FileInputStream(imagePath);
		int size =fis.available(); //得到文件大小 
		byte data[]=new byte[size]; 
		fis.read(data);  //读数据 
		fis.close(); 
		response.setContentType("image/gif"); //设置返回的文件类型 
        OutputStream os = response.getOutputStream();
        os.write(data);
        os.flush();
        os.close();        
	}
}