the response of the response provided

1, response status code object setting response line:

 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    response.setStatus(404);
    }

 

 2, response target addition response header:

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
Date date=new Date(121344444);
response.addHeader("zzz","I love JAVA.");
response.addIntHeader("myself",22);
response.addDateHeader("Time:",date.getTime());
}

 

 3, response is provided in response to the object header:

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    Date date=new Date(121344444);
    response.addHeader("zzz","I love JAVA.");
    response.addIntHeader("myself",22);
    response.addDateHeader("Time:",date.getTime());
    response.setIntHeader("myself",23);
    }