JSTL FMT Format Time

The use of the FMT function is required in the JSP to introduce
<%@ taglib prefix= "FMT" uri= "Http://java.sun.com/jsp/jstl/fmt"%>


<fmt:formatdate value= "${item.expdate}" pattern= "Yyyy-mm-dd"/>
Reported Java.lang.IllegalArgumentException:Cannot convert 20131125 of type class java.lang.String to class Java.util.Date
Exception because ${item.expdate} is taken out as a string type and cannot be converted to a date type
The output will be normal as follows
<fmt:formatdate value= "<%=new Date ()%>" pattern= "Yyyy-mm-dd"/>

The workaround is to resolve the string to date before formatting the date.

<fmt:parsedate value= "${item.expdate}" var= "Yearmonth" pattern= "Yyyy-mm-dd"/>


<fmt:formatdate value= "${yearmonth}" pattern= "yyyy-mm"/><!--here the value can only be date type--

<c:> Label Description:

Background:

Request.setattribute ("Today", New Date ());

Front desk:

<%@ taglib uri= "http://java.sun.com/jsp/jstl/fmt" prefix= "FMT"%>

<fmt:formatdate value= "${today}"/>//Do not write type attribute, and type= "date" equivalent

<fmt:formatdate value= "${today}" type= "Time"/>//type default value is Date

<fmt:formatdate value= "${today}" type= "both"/>

<fmt:formatdate value= "${today}" datestyle= "short"/>

<fmt:formatdate value= "${today}" datestyle= "Medium"/>//datestyle= "Medium" is the default value

<fmt:formatdate value= "${today}" datestyle= "Long"/>

<fmt:formatdate value= "${today}" datestyle= "full"/>

<fmt:formatdate value= "${today}" pattern= "Yyyy/mm/dd HH:mm:ss"/>

<fmt:formatdate value= "${today}" pattern= "Yyyy/mm/dd HH:mm:ss" var= "D"/>

${D}

Results: 2010-9-20

13:03:35

2010-9-20 13:05:32

10-9-20

2010-9-20

September 20, 2010

Wednesday, September 20, 2010

2010/09/20 13:10:25

2010/09/20 13:10:56

JSTL FMT Format Time