Processing Method for HTML: Select multiple selections under struts

HTML: Select supports multiple choices. It is very easy to select multiple choices. The background accepts a string. What should I do when multiple choices are made?


1. To create a multi-choice select control, you need to add Code such as multiple = "true" to the attribute list, as shown below:

Code: select all

       
          <%

             for (i=0; i<userlist.size(); i++) {

               tmpstring = (String)userlist.get(i);

          %>

         
          <%

             }

          %>

       

2. After being defined as multiple, the field in the corresponding actionformbean should be defined as a string array. Note that arraylist or other things cannot be used, but only a string array can be used, as shown below:

Code: select all

       <!-- Create UG Queue Limit Action -->

       <action   path="/CreateUGQueueLimit"

                 type="com.jointforce.action.CreateUGQueueLimitAction"

                 name="CreateUGQueueLimitForm"

                 scope="request"

                 input="createugqueuelimit">

           <forward name="moduleunavailable" path="/jsp/joblimitunavailable.jsp"/>

           <forward name="createugqueuelimit" path="/jsp/createugqueuelimit.jsp"/>

           <forward name="success" path="/jsp/createugqueuelimitresult.jsp"/>

       </action>


      <!-- Create UG Queue Limit -->

      <form-bean name="CreateUGQueueLimitForm"

                 type="org.apache.struts.validator.DynaValidatorForm">

          <form-property name="userlist" type="java.lang.String[]"/>

          <form-property name="grouplist" type="java.lang.String[]"/>

          <form-property name="hostlist" type="java.lang.String[]"/>

      </form-bean>


Validation. XML is still in use:

Code: select all

        <form name="CreateUGQueueLimitForm">

            <field property="userlist"></field>

            <field property="hostlist"></field>

            <field property="grouplist"></field>

        </form>

 

Finally, in the action class, we can get the following:

String [] userlist = (string []) propertyutils. getproperty (form, "userlist ");

You can use a for loop to retrieve the stuff:

For (INT I = 0; I <userlist. length; I ++ ){
System. Out. println (userlist [I]);
}