<li>号：<select id="ids" name="ids" οnchange="opt()">

<c:forEach var="t" items="${terminal}">

<option value="${t.terminalid}" selected>${t.displayname}</option>

</c:forEach>

</select></li>

<li>号：<select id="id" name="id">

<c:forEach var="b" items="${box}">

<option value="${b.boxid}" selected>${b.dispalyname}</option>

</c:forEach>

</select></li>

function opt(){

var id = $("#ids").val();

$.ajax({

   type: "POST",

  url: "${basePath}/cardInfo/selectByid?id="+id,

  success: function(msg){

  var myobj=(eval("(" + msg + ")").msg);

  $("#id").html("");

  $.each(myobj,function(i,val){

  $("#id").append("<option value="+val.id+">"+val.name+"</option>");

   })

  }

  });

}