jsp常用内置对象---request

request对象，目的是用来获取客户端的请求。

      主要方法有：

• String getParameter(String name) //根据表单组件名称获取提交数据

    <%

       String name=request.getParameter("name");
       String password=request.getParameter("password");
       String password1=request.getParameter("password1");
       String age=request.getParameter("age");
       String email=request.getParameter("email");
       String nian=request.getParameter("nian");
       String yue=request.getParameter("yue");
       String ri=request.getParameter("ri");
      %>

• String [ ] getParameterValues（String name) //获取表单组件对应多个值是的请求数据

   <%
  // request.setCharacterEncoding("utf-8");
  String name=request.getParameter("name");
  String password=request.getParameter("passwprd");
  //request.getParameterValues("interst");获取表单组件对应多个值是的请求数据
  String [] channels=request.getParameterValues("interst");
  %>

• void serCharacterEncoding(String charset) //解决post提交方式乱码问题

<%
   ////解决post提交方式乱码问题
   request.setCharacterEncoding("utf-8");
  String name=request.getParameter("name");
  String password=request.getParameter("passwprd");
  String [] channels=request.getParameterValues("interst");
  %>

•  RequestDidpatcher getRequestDispatcher(String path) //用于转发请求

<%
  String name=request.getParameter("name");
  String password=request.getParameter("password");
  if(name.equals("sa")&&password.equals("111111")){
     RequestDispatcher rd=request.getRequestDispatcher("welcome.jsp");
     rd.forward(request,response);
  }else{
     response.sendRedirect("denglu1.jsp");
  }
   %>