Custom par migration issue from 7.0 to 7.4

Question

Hi experts,
As we are upgrading from portal 7.0 to 7.4 , we have to migrate all custom par to war/ear.
I have migrated all custom to ear from par migratation tool.
but i am facing a problem when i import the migrated ear in nwds 7.31.
error is
1.Can not find the tag library descriptor for "tagLib"
code such as
<%@ taglib uri= "tagLib" prefix="hbj" %>
2.componentRequest cannot be resolved
code such as
com.sapportals.portal.prt.resource.IResource myResource1= componentRequest.getResource(com.sapportals.portal.prt.resource.IResource.IMAGE,"images/ico12_treeleaf.jpg");
java.lang.String url1=myResource1.getResourceInformation().getURL(componentRequest);
and import are
<%@page import = "com.sap.security.api.IUser" %>
<%@page import = "com.sap.security.api.UMException" %>
<%@page import = "com.sap.security.api.umap.IUserMappingData" %>
<%@page import = "com.sapportals.portal.prt.component.*" %>
<%@page import = "com.sapportals.portal.prt.resource.IResource" %>
<%@page import = "com.sapportals.portal.prt.runtime.PortalRuntime" %>
<%@page import = "javax.servlet.http.HttpSession" %>
<%@page import = "com.sap.ip.portal.service.ume.IUserManagementEngine" %>
<%@page import = "java.util.*" %>
Please help

Answer 1

Dear Amit,
Please read the below document to migrate custom applications or adding relevant jar files:
1. How To Migrate Custom Portal Applications to SAP NetWeaver 7.3     
2. Kindly see similar issue solved in thread JSPDynPage : Cannot find the tag library descriptor for tagLib update portalapp.xml and use only 1 proper reference for taglib. You can ignore error for not resolved componentRequest - it should work in runtime.
Thanks,
Rajendra