怎么样可以从数据库里去图片？

Question

public void doGet(HttpServletRequest request, HttpServletResponse response) throws
      ServletException, IOException {
    response.setContentType(CONTENT_TYPE);
    DBProvider dbProvider = new DBProvider();
    System.out.println (request.getParameter("id")+request.getParameter("select"));
    InputStream is = dbProvider.findProvider(request.getParameter("id"),request.getParameter("select"));
    response.reset();
    response.setContentType("image/jpeg");
    byte[] b = new byte[1024];
    while((is.read(b))!=-1){
        response.getOutputStream().write(b);
     }
     is.close();

Answer 1

java.sql.Blob blob = rs.getBlob(i);
blob.getBinaryStream()