jstl实现在jsp中动态添加下拉列表项

使用下面这个jsp的前 你需要写一个Stu类 生成set和get方法

Public Class Stu{ private int idprivate String namepublic void setId(int id){ this id=id} public int getId(){ return this id} public void setName(String name){ this name=name} public String getName(){ return this name} }

写个简单的servlet

public class gotoMall extends HttpServlet { public void doGet(HttpServletRequest request HttpServletResponse response) throws ServletException IOException { ArrayList<Stu>stus=new ArrayList<Stu>()Stu stu =new Stu()stu setId( )stu setName("aa")stu setId( )stu setName("bb")stus add(stu )stus add(stu )request setAttribute("stus" stus)request getRequestDispatcher("/WEB INF/admin/my jsp") forward(request response)} public void doPost(HttpServletRequest request HttpServletResponse response) throws ServletException IOException { this doGet(request response)} }

my jsp

lishixinzhi/Article/program/Java/JSP/201311/19829

假设Sheet1中的ID在A列。则

一、Ctrl+F3,新建名称：ID

引用位置中填入

=OFFSET(Sheet1!$A$1,,,COUNTA(Sheet1!$A:$A))

二、选中Sheet2中要设置下拉列表的区域

数据

有效性

有效性条件（允许）

选“序列”

在序列来源中输入

=ID

确定即可

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