struts2截取字符串

<struts:if test="null!=pushAd&&pushAd.length()>14">
                                                  <struts:property value="pushAd.substring(0, 14)"/>...
                                          </struts:if>
                                          <struts:else>
                                                  <struts:property value="pushAd" />
                                           </struts:else>