JSP编程：获取相同名称Checkbox值

最新推荐文章于 2024-06-20 09:45:23 发布

转载最新推荐文章于 2024-06-20 09:45:23 发布 · 826 阅读

文章标签：

#jsp #编程 #javascript #null #action #string

本文介绍了一个简单的JSP页面示例，演示如何处理表单中的多个复选框选项。通过JavaScript动态生成一系列复选框，并使用Java后台代码获取用户的选择，最后展示用户所选的所有选项。

<% @ page contentType = " text/html; charset=GBK " %>
<% @ page import = " java.io.* " %>
<% @ page import = " java.util.* " %>
<% @ page import = " java.lang.String.* " %>

<%
if (request.getParameter( " submit " )! = null )
{
String checkbox[] = request.getParameterValues( " checkbox " );
if (checkbox! = null )
{
   // int size = java.lang.reflect.Array.getLength(checkbox);
   int size = checkbox.length;
  out.println( " 您选中了 " + size + " 项，分别为：<br> " );
   for ( int i = 0 ;i < size;i ++ )
  {
   out.println(checkbox[i] + " <br> " );
  }
}
}
%>

< form name =form1 action ="" method =post >
< script langauge =javascript >
for (i = 0 ;i < 20 ;i ++ )
{
document.writeln( " <input type=checkbox name=checkbox value=" " + i + " "><label for=checkbox " + i + " >选择 " + i + " </label><br> " );
}
</ script >
< br >
< input type =submit value ="提交" name ="submit" >
</ form >