Question

I have a problem at the 2 dropdown lists in my jsp 1- CLASS 2-SECTION.Both should come from database and if i select a class in the class dropdown list then the corresponding section values are came from the database. Please help by providing the code in jsp.And i am using mysql database
example:

classes sections

class1 sec1_1
class1 sec1_2
class2 sec2_1

1. Suppose in the class dropdown list value “class1” is selected

2. Then the section dropdown list gets “sec1_1″,”sec1_2” values from the database

   • I am facing problem at step 2 please give me the code without using the jquery and ajax

Answer 1

MyPage.jsp

<s:select name="classId" id="class_select" value="classId" list="yourClassList" onchange="classChanged(this.value)"/>
<s:select id="sec_select" list="yourSecList"/>

Javascript

function classChanged(value){
  var url="getSectionsOfClass?classId="+value;
  window.location=url;
}

struts.xml

<action name="getSectionsOfClass" class="com.xx.action.GetSectionOfClass">
  <result name="success">MyPage.jsp</result>
</action>

In GetSectionOfClass declare classId , yourClassList and yourSecList(with getter/setter) and populate the lists with your business logic. yourClassList will containd all the classes whereas yourSecList will contain sections based on classId.