Error when run a simple sample using jsp tag

Question

When i run a jsp using jsp tag, the tomcat gave me the following information:
Resolve entity failed-//Sun Microsystems,Inc.//DTD JSP Tag Library 1.2//EN http://java.sun.com/dtd/web-jsptaglibrary_1_2.dtd
My tld file is:
<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE taglib
PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.2//EN"
"http://java.sun.com/dtd/web-jsptaglibrary_1_2.dtd">
<taglib>
<tlib-version>1.0</tlib-version>
<jsp-version>1.2</jsp-version>
<short-name>sample</short-name>
<uri>WEB-INF/sampleTag</uri>
<display-name>SampleTag</display-name>
<description>Sample TLD</description>
<tag>
<name>time</name>
<tag-class>com.sample.taglib.TimeTag</tag-class>
<body-content>empty</body-content>
</tag>
</taglib>
Anybody can tell me why?
Thanks!!!

Answer 1

It's strange bacause DTD is available under given address.
Which JSP version are you using?
Do you have any other tld file, which uses the same DTD version? Do tags define in it work properly?
Maby try to use 1.1 version of DTD?
<!DOCTYPE taglib PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.1//EN" "http://java.sun.com/j2ee/dtds/web-jsptaglibrary_1_1.dtd">But remember than version 1.1 has another node names (see http://java.sun.com/j2ee/dtds/web-jsptaglibrary_1_1.dtd).