request获取网页单选框的值

< form  action = "servlets/LoginServlet"  method = "post"  name = "login"  onclick = "return check(this);" >
< table >
    < tr >
        < td >用户名： td >
        < td >< input  name = "userid"  type = "text"  size = "15" > td >
    tr >
    < tr >
        < td >密码： td >
        < td >< input  name = "password"  type = "password"  size = "15" > td >
    tr >
    < tr >
        < td  ="2">< input  type = "radio"  name = "status"  value = "1"
            checked = "checked"  />学生   < input  type = "radio"  name = "status"
            value = "2"  />老师 td >
    tr >
    < tr >
        < td  colspan = "2" >< input  type = "submit"  value = "确定" > td >
    tr >
table >

form >

用request获取status的值从是什么啊，假设选择第一项

request.getParameter( "status" )
答案是"1"。