jsp - Not displaying error message for a select drop down in Struts 2 -

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i have following code

action:

private string yoursearchengine; private string selectedusergroupid;     //with both getter , setter.  public void validate(){     if("-1".equals(getyoursearchengine())){         addfielderror("yoursearchengine", gettext("select search engine"));         addresslist.add("select search engine");     }      if("-1".equals(getselectedusergroupid())){         addfielderror("selectedusergroupid", "select user group");         addresslist.add("select user group");     }

jsp page:

<s:select   label="search engine:"              headerkey="-1"              headervalue="select search engines"             list="searchengine"              name="yoursearchengine"              id="yoursearchengine"             value="defaultsearchengine"              tooltip="select search engines" />  <s:select   label = "user group:"              list = "usergrouplist"              listkey = "usergroupid"             listvalue = "usergroup"             name = "selectedusergroupid"             id="selectedusergroupid"             headerkey="-1"              headervalue="select group"              tooltip="select group" ></s:select>

when submit form , value -1, not display error message. can see addfielderror code run addresslist populated.

but not displaying error message.

by default struts2 uses xhtml theme. theme designed display field errors on input elements bound action. if errors aren't displayed make sure have used xhtml theme, or can add explicitely theme attribute each select tag or form tag. can configure theme used default using struts constant.

<s:select   label="search engine:"              headerkey="-1"              headervalue="select search engines"             list="searchengine"              name="yoursearchengine"              id="yoursearchengine"             value="defaultsearchengine"              tooltip="select search engines"              theme="xhtml" />  <s:select   label = "user group:"              list = "usergrouplist"              listkey = "usergroupid"             listvalue = "usergroup"             name = "selectedusergroupid"             id="selectedusergroupid"             headerkey="-1"              headervalue="select group"              tooltip="select group"              theme="xhtml" />

see can specify theme in struts tags. specifying theme struts 2 should use.

you can specify theme on per struts 2 tag basis or can use 1 of following methods specify theme struts 2 should use:

  • the theme attribute on specific tag
  • the theme attribute on tag's surrounding form tag
  • the page-scoped attribute named "theme"
  • the request-scoped attribute named "theme"
  • the session-scoped attribute named "theme"
  • the application-scoped attribute named "theme"
  • the struts.ui.theme property in struts.properties (defaults xhtml)

to make effective on page make sure input result configured action defaultstack of interceptors.


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