jquery ajax后台向前台传list 前台用jquery $.each遍历list

下边是两种前台接收并遍历list 
Js代码 :

$.ajax({
    type: 'post',
    url: xxx.action',
    dataType: 'text',
    success: function(data){
        var dataObj=eval("("+data+")");
        for(var i=0;i
            alert(dataObj[i].id+" "+dataObj[i].name);
        }

        var jsonObj=eval("("+data+")");
        $.each(jsonObj, function (i, item) {
            alert(item.id + ","  + item.name);
        });
    },
    error: function(text) {}
});

下边是后台接收并遍历list //

Java代码  :

HttpServletResponse res = ServletActionContext.getResponse();
res.reset();
res.setContentType("text/html;charset=utf-8");
PrintWriter pw = res.getWriter();
xxx.setId(1);
xxx.setName("黑色头发");
list.add(xxx);
xxx.setId(2);
xxx.setName("紫色头发");
list.add(xxx);

String json = JSONArray.fromObject(list).toString();

pw.print(json);
pw.flush();
pw.close();