how to use custom liferay-ui tags in sdk portlet?

[srikanth davuluri，修改在12 年前。]

Hi All

I am not able to access custom liferay-ui tags in sdk portlet (working fine in ext environment )and getting below error.

java.lang.ClassNotFoundException: com.liferay.taglib.util. IncludeTag
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)

Could you please let me know the solution.

thanks in advance......

regards
Srikanth Davuluri.

[Ravi Kumar Gupta，修改在12 年前。]

Check any init.jsp like file in webapps/root/html/portlet and import them..
Add all tlds in docroot\WEB-INF\tld.. if they are not there by default..
You can copy them from liferay deployed folder.

[Vikas R Khengare，修改在12 年前。]

I think you also need to include "util-taglib.jar" file to /WEB-INF/lib/ folder

[srikanth davuluri，修改在12 年前。]

Ravi Kumar Gupta:

Check any init.jsp like file in webapps/root/html/portlet and import them..
Add all tlds in docroot\WEB-INF\tld.. if they are not there by default..
You can copy them from liferay deployed folder.

Vikas R Khengare:

I think you also need to include "util-taglib.jar" file to /WEB-INF/lib/ folder

thanks for your suggestions.I tried both but still facing same problem in SDK environment (working fine in EXT environment).
when i am using custom tag in SDK portlet facing error with IncludeTag.java file.
and error is
javax.servlet.ServletException: java.lang.NoClassDefFoundError: com/liferay/taglib/util/IncludeTag
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:268)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)
at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:551)
at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:488)
at org.apache.portals.bridges.struts.PortletServletRequestDispatcher.invoke(PortletServletRequestDispatcher.java:128)
at org.apache.portals.bridges.struts.PortletServletRequestDispatcher.forward(PortletServletRequestDispatcher.java:135)
at com.liferay.portal.apache.bridges.struts.LiferayRequestDispatcher.invoke(LiferayRequestDispatcher.java:155)

thanks in advance.........

[Christianto Sahat，修改在12 年前。]

Try to add util-taglib.jar on your liferay-plugin-package.properties ( under portal-dependency-jars )

portal-dependency-jars=\
    displaytag.jar,\
    jstl-api.jar,\
    util-taglib.jar,\
    jstl-impl.jar

portal-dependency-tlds=\
    displaytag.tld,\
    c.tld,\
    fmt.tld

Also add *.tld file needed for the taglib on portal-dependency-tlds above.

[Vikas R Khengare，修改在12 年前。]

Hi Shrikanth,

Your problem is, Class Not Found Exception; The class you mentioned is in util-taglib.jar.
So including above jar and TLD files at correct location should solve your problem.

Check
1) liferay-xxx.tld files are exists in /(tomcat.home)/webapps/your-portlet/WEB-INF/tld/
2) Put util-taglib.jar, util-java.jar, util-bridges.jar, jstl-api.jar, jstl-impl.jar files in /(tomcat.home)/webapps/your-portlet/WEB-INF/lib/

Check whether all these files are present in your Tomcat. Might be you are including these files in your classpath of eclipse but in actual deployed folder within Tomcat.