Java のリクエスト オブジェクトの get と post の違いについて簡単に説明します (図)

protected void doGet(HttpServletRequest request, HttpServletResponse response)
   throws ServletException, IOException {
  response.setContentType("text/html;charset=gbk");//设置响应正文的mime类型
  request.setCharacterEncoding("gbk");//设置请求的编码格式
  response.setCharacterEncoding("gbk"); 

  String username = request.getParameter("userName");//
  String password = request.getParameter("password");
  String sex = request.getParameter("sex");
  String classes = request.getParameter("class");
  String hobby[] = request.getParameterValues("hobby");// 获取checkbox的数据保存到hobby数组中

  PrintWriter out = response.getWriter();
  
  if (hobby != null) {
   for (String x: hobby) {
    out.println("doGet被调用");
    out.println("name:"+username+"password:"+password+"sex"+sex+"classes"+classes);
    out.println("hobby:" + x);  
   }
  }else{
   out.println("此人没爱好！"); 
  }
 }