java - Struts Jquery Select tag sometimes not get data. (<sj:select />) -

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i use

<sj:select />

some times data. not, need refresh page populate select box. please me...

for populating category

<s:url var="categoryurl" action="returntrainings"/> <sj:select       href="%{categoryurl}"       id="category" cssclass="employeeinput"       onchangetopics="reloadsecondlist"       onalwaystopics="reloadsecondlist"       name="categorynamefortraining"       list="distinctcategory"       headerkey="0"       headervalue="select category"/>

for populating training

<sj:select     href="%{categoryurl}"     id="selectwithreloadtopic" cssclass="employeeinput"     formids="trainlist"     reloadtopics="reloadsecondlist"     name="traininglist.hcmotraininglistid" list="selectedtrainingnames"     listkey="hcmotraininglistid"      listvalue="trainingname"     headerkey="0"     headervalue="select training"/>


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