Convert existing servlet into portlet

Hi
We have a set of Java servlets running on apache and jserv and not using Portal. My task is to be able to convert these into Portal.All of the existing servlets are extends/use our existing set of classes. They display a list of rows in a table as HTML with a URL pointing back to the same servlet or different servlet based on logic, with set of parameter. With my current setup (all on a Win2000 system), I have installed the JPDK samples and it is working fine, but have now got stuck in applying the concepts to my own existing servlets. So can you help me how can i convert an existing Java servlet into Portal?
First i tried the "how to build your own java portal exercise" and it runs fine. But when i tried to run simple servlet to convert into portlet, i got the following error. I am really confuse about Renderer. Is it nessessary to make Renderer or use Default Renderer? I will really thankful to you if you give me some idea.
I changed the following in to conf/jserv properties.
1. set the " <showPage class="AgeServlet"/> " in provider.xml
2. in zone property
servlet.AgeServlet.code=oracle.portal.provider.v1.http.HttpProvider
servlet.AgeServlet.initArgs=provider_root=C:\MyProvider,sessiontimeout=1800000,debuglevel=1
3. In jserv property
wrapper.classpath=C:\MyProvider\MyClasses
Where i put my AgeServlet.class
4.Stop and Start the Oracle HTTP Server.
When i try to run url(http://host.domain:port/servlet/AgeServlet) it gives me following error.
Error!
javax.servlet.ServletException: Unable to initialize new provider instance: java.lang.reflect.InvocationTargetException
My servlet is
// JDK1.2.2 module
import java.io.*;
import java.util.*;
//JSDK modules
import javax.servlet.*;
import javax.servlet.http.*;
* class to promt for the year of birth
* and calculate the age.
* @author Vipul Patel [email protected]
public class AgeServlet extends HttpServlet {
* method to call doPost
* @param request
* @param response
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException {
doPost(request, response);
* method to call calculateAge
* @param request
* @param response
public void doPost(HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException {
getAge(request, response);
* method for display html form for get year
* and calculate the age
* @param request
* @param response
public void getAge(HttpServletRequest request,
HttpServletResponse response) {
response.setContentType("text/html");
PrintWriter out = null;
try {
out = response.getWriter();
} catch(IOException ex) {
ex.printStackTrace();
String age = calculateAge(request, response);
// create and send html form to user
out.println("<html>");
out.println("<body>");
out.println("<title>Age calculation</title>");
out.println("<form action=\"/servlets/AgeServlet\" method=get>");
out.println(age + "<br>");
out.println("Enter the Year of Birth<input type=\"text\" name=ageyear><br>");
out.println("<input type=submit value=submit>");
out.println("<input type=\"reset\" value=\"reset\">");
out.println(" </form>");
out.println("</body>");
out.println("</html> ");
* calculate the age
* @param request
* @param response
* @return age
public String calculateAge(HttpServletRequest request,
HttpServletResponse response) {
String age= "";
String year="";
int curr_year;
int count_year = 0;
year = request.getParameter("ageyear");
Date date = new Date();
String today_date = date.toString();
today_date = today_date.substring(24,29);
curr_year = Integer.parseInt(today_date);
if((year != null) && (!year.equals("")) ) {
int get_year = Integer.parseInt(year);
if(get_year > curr_year) {
age = "You enterd wrong entry!!!!!";
} else {
for (int i=get_year; i<=curr_year; i++) {
count_year++;
age ="Your age is: " + String.valueOf(count_year);
} else {
age = "Enter the year of Birth";
return age;
Thank you very much!!
Vipul Patel
null

Hi
Now i changed my code and it display my contents on broweser. But when i submit the form i cannot able to forward my request to same page. Any suggestion please.
Thanks.
changed code
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import oracle.portal.provider.v1.*;
import oracle.portal.provider.v1.http.*;
public class AgeServlet extends HttpServlet {
* Initialize global variables
public void init(ServletConfig config) throws ServletException {
super.init(config);
* Process the HTTP Post request
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException,
IOException {
doGet(request,response);
* Get Servlet information
* @return java.lang.String
public String getServletInfo() {
return "AgeServlet Information";
* Process the HTTP Get request
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException,
IOException {
PortletRenderRequest pr = (PortletRenderRequest)request.getAttribute(HttpProvider.PORTLET_RENDER_REQUEST);
try {
renderShow(pr);
} catch (Exception e) {
private void renderShow(PortletRenderRequest pr)
throws PortletException {
try {
/*HttpServletRequest request = (HttpServletRequest)
pr.getAttribute(HttpProvider.SERVLET_REQUEST);
HttpServletResponse response = (HttpServletResponse)
pr.getAttribute(HttpProvider.SERVLET_RESPONSE); */
PrintWriter out = pr.getWriter();
pr.setContentType("text/html; charset=WINDOWS-1252");
pr.setContentType("text/html");
//PrintWriter out = response.getWriter();
// create and send html form to user
out.println("<html>");
out.println("<body>");
out.println("<title>Age calculation</title>");
out.println("<form method=\"POST\" action=\""+HttpPortletRendererUtil.htmlFormActionLink(pr,PortletRendererUtil.PAGE_LINK) +"\">");
HttpPortletRendererUtil.htmlFormHiddenFields(pr,PortletRendererUtil.PAGE_LINK);
String ageParam = HttpPortletRendererUtil.portletParameter(pr, "ageyear");
String submitParam = HttpPortletRendererUtil.portletParameter(pr, "mySubmit");
out.println("Enter the Year of Birth<input type=\"text\" name=\" + ageParam + \"><br>");
out.println("<input type=\"submit\" name=\" + submitParam + \" value=\"submit\">");
out.println(" </form>");
out.println("</body>");
out.println("</html> ");
if (pr.getParameter(submitParam) != null ) {
out.println("You are "+ calculateAge(pr,out));
} catch (Exception e) {
* calculate the age
* @param request
* @param response
* @return age
public String calculateAge(PortletRenderRequest pr, PrintWriter out) {
String age= "";
String year="";
int curr_year;
int count_year = 0;
year = pr.getParameter("ageParam");
Calendar rightNow = Calendar.getInstance();
curr_year = rightNow.get(Calendar.YEAR);
if((year != null) && (!year.equals(""))) {
int get_year = Integer.parseInt(year);
if(get_year > curr_year) {
age = "You enterd wrong entry!!!!!";
} else {
count_year = curr_year - get_year;
age = String.valueOf(count_year);
} else {
age = "Enter the year of Birth";
return age;
Error message
Wed, 08 Aug 2001 00:04:55 GMT
No DAD configuration Found
DAD name:
PROCEDURE : !null.wwpob_page.show
URL : http://ntserver:80/pls/null/!null.wwpob_page.show?_pageid=null
PARAMETERS :
===========
ENVIRONMENT:
============
PLSQL_GATEWAY=WebDb
GATEWAY_IVERSION=2
SERVER_SOFTWARE=Oracle HTTP Server Powered by Apache/1.3.12 (Win32) ApacheJServ/1.1 mod_ssl/2.6.4 OpenSSL/0.9.5a mod_perl/1.24
GATEWAY_INTERFACE=CGI/1.1
SERVER_PORT=80
SERVER_NAME=ntserver
REQUEST_METHOD=POST
QUERY_STRING=_pageid=null
PATH_INFO=/null/!null.wwpob_page.show
SCRIPT_NAME=/pls
REMOTE_HOST=
REMOTE_ADDR=172.16.0.27
SERVER_P ROTOCOL=HTTP/1.1
REQUEST_PROTOCOL=HTTP
REMOTE_USER=
HTTP_CONTENT_LENGTH=52
HTTP_CONTENT_TYPE=application/x-www-form-urlencoded
HTTP_USER_AGENT=Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt) RPT-HTTPClient/0.3-2S
HTTP_HOST=ntserver
HTTP_ACCEPT=image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, */*
HTTP_ACCEPT_ENCODING=gzip, deflate, x-gzip, compress, x-compress
HTTP_ACCEPT_LANGUAGE=en-us
HTTP_ACCEPT_CHARSET=
HTTP_COOKIE=portal30=3.0,en,us,AMERICA,7044103775205D94AE891C2EB8EC88ECB9671CC56E5524FFBAE3419299B938639A5159BD1DF60D6A57362DA77173DED757521073FAB521072C6E83A9EDD32D5DD1E3859A48A75
9C1537468FDD6B2AF6C36692DA501614F9B;
portal30_sso=3.0,en,us,AMERICA,C62FD25D23E9A2D66948EDCD463B2CCD50050AD8D02B7EF55A61DBC14E253387C44B1A5D9668CC141CE38DD4455FEF3D28188817CC1678D8F0C1F642C95CB0E34406EFC41D4A36E1A2915
182A5FC121377E258FA76480763
Authorization=
HTTP_IF_MODIFIED_SINCE=
HTTP_REFERER=
null

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**         WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
* else.
*    gv_count = gv_count + 1.
* endif.
CALL FUNCTION 'GUI_DOWNLOAD'
EXPORTING
    BIN_FILESIZE                    = numbytes
    FILENAME                        = v_filename
    FILETYPE                        = 'BIN'
*   APPEND                          = ' '
*   WRITE_FIELD_SEPARATOR           = ' '
*   HEADER                          = '00'
*   TRUNC_TRAILING_BLANKS           = ' '
*   WRITE_LF                        = 'X'
*   COL_SELECT                      = ' '
*   COL_SELECT_MASK                 = ' '
*   DAT_MODE                        = ' '
*   CONFIRM_OVERWRITE               = ' '
*   NO_AUTH_CHECK                   = ' '
*   CODEPAGE                        = ' '
*   IGNORE_CERR                     = ABAP_TRUE
*   REPLACEMENT                     = '#'
*   WRITE_BOM                       = ' '
*   TRUNC_TRAILING_BLANKS_EOL       = 'X'
*   WK1_N_FORMAT                    = ' '
*   WK1_N_SIZE                      = ' '
*   WK1_T_FORMAT                    = ' '
*   WK1_T_SIZE                      = ' '
*   WRITE_LF_AFTER_LAST_LINE        = ABAP_TRUE
*   SHOW_TRANSFER_STATUS            = ABAP_TRUE
* IMPORTING
*   FILELENGTH                      =
TABLES
    DATA_TAB                        = pdf .
*   FIELDNAMES                      =
Thanks.

Function Module to convert multiple records into single record and vice-ver

hi,
i have a requirement to convert 10 records in an internal table to single record which should be passed
to a single variable and store in the database.Kindly let me know is there any function module
which meets my requirement. Also i need to do split one single record to 10 records each of
say 65 length interval.
kindly provide me if there is nay functinon module as such.
I can do with ABAP-OOPS.Please suggest function module.

I dont think such FM exists, but if you wanna code one it would be simple. Just loop through the internal table, keep concatenating the currently processing record into a long character variable to convert 10 records into one record.

How to convert a Tcode into Function module or a Bapi

Dear all,
i would like to convert Tcode : ME21N into a Function module or a Bapi to create a Webservice.
Kindly help me..!!
Thanks in advance..
SreeKumar..

Hey,
Is the existing BAPI 'BAPI_PO_CREATE1' not sufficient for your needs?
Till now never had to do something with webservices but this service ...maybe it does exist already...
seems a likely candidate to be converted by SAP. So you do no need to re-invent the wheel again...and again...
Cheers,
BV.

Error converting DOM nodes into SOAP nodes

Hi,
i am doing an http call using http binding activity in oracle soa suite 11g.The http call requires some header information.When I pass the header information through headers in invoke activity and invoke the http call,I get an error " Error converting DOM nodes into SOAP nodes".What might be the reason and how to solve it.
Naresh

Hello,
It appears your code is trying to repeat messagePart itself. Split Joins strictly adheres to a WSDL definition for incoming and outgoing messages.
Instead of repeating <RootElement> which is defined as single occurance in your message definition within WSDL, you should find a way to tweak the WSDL to have "repetitive node which will become single message after split" within 1 Root element.
This will call for having need of implementing transformation within split join based on need of target input message. Below is the example:
WSDL contains:
<wsdl:message name="inputMessageName">
     <wsdl:part name="partInput" element="rootElement"/>
</wsdl:message>
What your current xml structure is(please note how message itself is repeating below while it has been defined as single in wsdl, unfortunately there is nothing maxOccurs for message in WSDL definition , although you can define multiple parts but that is not case here):
<soap:Body>
<rootElement>
</rootElement>
<rootElement>
</rootElement>
<rootElement>
</rootElement>
</soap:Body>
What Split-Join expects(If you have existing wsdl then you need to tweak it to conform to below kind of structure then use transformation within split join to convert it into correct xml structure for outgoing):
<soap:Body>
<rootElement>
     <repetitiveElementSpecificToIndividualSplitRequest/>
     <repetitiveElementSpecificToIndividualSplitRequest/>
     <repetitiveElementSpecificToIndividualSplitRequest/>
</rootElement>
</soap:Body>
I hope this helps.
Regards,
Ankit

Convert Problems/Solutions into Knowledge Articles

Hi Experts,
I am wroking on SAP CRM 7.0 SP06 and now we are planning to implement Knowledge Article functionality.
I have done the all configuration settings and multilevel categorization, every thing working fine. Now I want to convert problems/solutions which already created in CRM and stored in SDB into knowledge article.
Any one please guide me how can I convert existing problems/solutions into knowledge articles. Is there any report for this?
Thanking you in anticipation.
Regards,
Babu.

Hi Kevin,
Well, I'm new on this and have only worked on CRM 6 & 7. I'll give you my advice regarding these CRM versions. I don't know if it is supported on CRM 5.
IMG:
CRM >> Enterprise Intelligence >> SAF >> Name and Configure KB
You create and define you DB as you want: ACME INC
CRM >> Enterprise Intelligence >> SAF >> Business Add-Ins >> BAdI: Knowledge Base
Each knowledge base should have its own Add-In implementation. So you have to implement an Add-In based on Add-In definition CRM_SAF_KB_*: CRM_SAF_KB_ACME. You can follow IMG documentation.
In my case, the add-in already existed, since Knowledge Article functionality is standard in 7.0. KB didn't exist, I don't know why. I just created it with the name assigned on the BAdI, compiled, and everything works fine now.
Hope it helps.
Regards.
Pablo

Convert existing servlet into portlet

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