CODEWITHSUNDEEP
javajspstrutsjstl
Geek
Geek

Reputation: 3319

c:when not null/empty check

I have a forma variable ftDtClo defined in form like,

public String getFtDtClo () {
  String dateStr = "";
    if(this.getCse().getDtClo()!=null) {
        dStr = DtUtil.formatDate(this.getCse().getgetDtClo(), DtUtil.FORMAT_MM_DD_YYYY_KK_MM_SS);
    }
   return dateStr;            
}

In JSP the code looks like,

<c:choose>
        <c:when test="${not empty cseList.ftDtClo}">
        <c:out value="${cseList.ftDtClo}"/>
        </c:when>
        </c:choose>

But i get the foll exception,

wrapped exception:
javax.servlet.jsp.JspException: javax.servlet.jsp.JspException: An error occurred while evaluating custom action attribute "test" with value "${not empty cseList.ftDtClo}": An error occurred while getting property "ftDtClo" from an instance of class abc.cseDetailLists (java.lang.NullPointerException)
    at org.apache.taglibs.standard.tag.common.core.ImportSupport.acquireString(ImportSupport.java:306)
    at org.apache.taglibs.standard.tag.common.core.ImportSupport.doEndTag(ImportSupport.java:161)

Im assuming not empty will take care of null check. Am i missing something? any i/p is highly appreciated.

Upvotes: 3

Views: 50668

Answers (2)

Alex
Alex

Reputation: 11579

Try to change this:

    public String getFtDtClo () {
        String dateStr = "";
        if(this.getCse()!=null && this.getCse().getDtClo()!=null) {
          dStr = DtUtil.formatDate(this.getCse().getDtClo(), DtUtil.FORMAT_MM_DD_YYYY_KK_MM_SS);
        }
      return dateStr;            
   }

If it does not work, check your function DtUtil.formatDate as well.

Upvotes: 1

PSR
PSR

Reputation: 40318

   <c:choose>
      <c:if test=${cseList != null}>  
        <c:when test="${not empty cseList.ftDtClo}">
        <c:out value="${cseList.ftDtClo}"/>
        </c:when>
       </c:if>
    </c:choose>

Upvotes: 4

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