JSF and JDBC

Hi, I am new to JSF, can anybody direct me to a good tutorial on JSF and JDBC (Oracle)?
Thanks

Try
http://java.sun.com/developer/onlineTraining/index.html
From here you will find links for JDBC (via Distributed computing) & the Web Services Tutorial (JSF is included)
If you specifically want Oracle then you can sign up to OTN - try
http://www.oracle.com/technologies/

Similar Messages

JSF and JSTL integration

Can anyone tell me how to access JSF objects from JSTL tags?
I want to set a requestScope flag in my changeListener
... context.getExternalContext().getRequestMap().put("xxx","ok"); ... and render output depending on existance of this flag:
...<c:if test="${requestScope.xxx!=null}" > .... .
This examplecode doesn't work, JSTL tags cannot access this var! How can I do that?
What I realy want is to reload another frame when user changed a specific input field.
Above code should add a JavaScript to reload the frame if this is true .
I can't do this on submit because the other framepage uses the stored/modified data.
Maybe there's a better approach for this anyway?
Thanks for your help!

Thanks for your help - I found it was my own mistake why it didn't work. Now it does, as you said.
But in the meentime I ran into another Problem mixing JSTL und JSF:
I want to build a SelectOneMenu and populate it with data from a database, but with selectItemValue
other than selectItemLabel (value should be numeric DB-ID, label a readable name).
Since "selectItems" allows only one dimensional Arrays (?) as parameter, I must use "selectItem" for
each row. So I wrote following code:
<h:selectOneMenu id="m1" value="#{worktime.employee}">
   <sql:query var="employees" dataSource="jdbc/WebOfficeDB">
       select oid,displayname from employees order by displayname asc
    </sql:query>
    <c:forEach var="row" items="${employees.rows}" >
       <f:selectItem itemValue="#{row.oid}" itemLabel="#{row.displayname}" />
    </c:forEach>
</h:selectOneMenu>This doesn't work, I get NullPointer Exceptions from selectItem.setValue().
I think because JSF "#" references another context than JSTL "$" - is this correct?
So I tried to set a JSTL variable inside the forEach loop to access the datarow
<c:set var="data" value="${row}" scope="request"/>
<f:selectItem itemValue="#{requestScope.data.oid}" itemLabel="#{requestScope.data.displayname}" />
...The effect is that all lines of the selectOneMenu have the same content (from the last datarecord)!?
Since this is my first project in JSTL and JSF and should stay a small one I don't want to go into building
CustomComponents and so on for such a simple Task.
I would be very very happy for some tips and hints, since I think this mixing of JSTL and JSF Context
will be a very common problem within my project.
Thanks

Help on RFC to JDBC and JDBC to RFC

Help on RFC to JDBC and JDBC to RFC
Hi Gurus
I have the scenario where an RFC will be triggered in SAP , to write to a DB2 database and insert new records in a table
and vice versa the JDBC has to read som data from a table based on a primary key, mark them as read for not be read next time and send the data to an RFC where a table in SAP will be updated.
I have never worked with JDBC before , pls advice.
is there any new issue to consider in PI 7.0 regarding JDBC
Thanks.

The requirement looks standard,
SEARCH IN SDN FOR JDBC scenarios,you will find many docs for sender as well as Receiver.
>
> is there any new issue to consider in PI 7.0 regarding JDBC
>
no issue with PI7.0.
Regards,
Raj

Creating a service ; What needs to be added to tnsnames.ora and JDBC url?

DB version: 11.2.0.2
OS platform : Solaris 10
We have a 2 node RAC.
DB name   = mbsprd
Instance1 = mbsprd1
Instance2 = mbsprd2I want Instance 1 (mbsprd1) to be used for our OLTP application and Instance 2 (mbsprd2) to be used for another application of DSS nature.
Based on the syntax
srvctl add service -d <dbname> -s <ServiceName> -r <Preferred Instance> -a <Available Instance>I am going to create 2 services
-- Creating a service called OLTP
srvctl add service -d mbsprd -s OLTP -r mbsprd1 -a mbsprd2-- Creating a service called DSS
srvctl add service -d mbsprd -s DSS -r mbsprd2 -a mbsprd1-- Starting the services
srvctl start service -d mbsprd -s OLTP
srvctl start service -d mbsprd -s DSSI guess the above steps are enough to configure a service at the server side.
I would like to know what needs to be done at the client side.
Currently the tnsnames.ora file and JDBC url used by our clients are shown below. What needs to be added to tnsnames.ora file and jdbc URL to start using services configured above?
-- SCAN based TNS entry
mbsprd =
(DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (COMMUNITY = tcp.world)
        (PROTOCOL = TCP)(Host = p148149-scan.tpam.net) (Port = 36964))
    (CONNECT_DATA =
      (SERVER       = DEDICATED)
      (SERVICE_NAME = mbsprd)
      (FAILOVER_MODE=(TYPE=SELECT)(METHOD=BASIC))
-- TNS entry based on local listener
-- Instance 1
mbsprd1 =
(DESCRIPTION =
   (ADDRESS_LIST =
   (ADDRESS =(PROTOCOL = TCP)(HOST = hsolarp148-vip)(PORT = 36973))
   (CONNECT_DATA =
         (SERVICE_NAME = mbsprd)
         (INSTANCE_NAME = mbsprd1)
-- Instance 2
-- TNS entry based on local listener
mbsprd2 =
(DESCRIPTION =
   (ADDRESS_LIST =
   (ADDRESS =(PROTOCOL = TCP)(HOST = hsolarp149-vip)(PORT = 36973))
   (CONNECT_DATA =
         (SERVICE_NAME = mbsprd)
         (INSTANCE_NAME = mbsprd2)
)JDBC entry for RAC
jdbc:oracle:thin:@p148149-scan.tpam.net:36964:mbsprd -- Alternative version used by some clients because the above had 'some issues'
jdbc:oracle:thin:@(DESCRIPTION=(LOAD_BALANCE=on)(ADDRESS=(PROTOCOL=TCP)(HOST=p148149-scan.tpam.net) (PORT=36964))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=mbsprd)(FAILOVER_MODE =(TYPE = SELECT)(METHOD = BASIC)(RETRIES = 180)(DELAY = 10))))

OLTP =
(DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = p148149-scan.tpam.net)(PORT = your_port_number))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = OLTP)
DSS =
(DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = p148149-scan.tpam.net)(PORT = your_port_number))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = DSS)
)JDBC entry for RAC
jdbc:oracle:thin:@p148149-scan.tpam.net:36964:service_name
jdbc:oracle:thin:@new_tns_entry_description(if you would like to connect the database with particular service)
try this and let us know any issues,

Building a Simple JSF and Web Services App in JDeveloper 10.1.3 Preview

Hi
I was trying out this example of JSF and webservices at:
http://www.oracle.com/technology/products/jdev/101/howtos/jsfws/index.html
Has anyone tried it before? I'm getting the following error:
calling http://216.200.21.157:9090/soap
WARNING: Unable to connect to URL: http://216.200.21.157:9090/soap due to java.security.PrivilegedActionException: oracle.j2ee.ws.saaj.ContentTypeException: Not a valid SOAP Content-Type: text/html
java.rmi.RemoteException: ; nested exception is:
     HTTP transport error: javax.xml.soap.SOAPException: java.security.PrivilegedActionException: oracle.j2ee.ws.saaj.ContentTypeException: Not a valid SOAP Content-Type: text/html
     at com.minc.ws.stockquery.proxy.runtime.NetXmethodsServicesStockquoteStockQuoteBinding_Stub.getQuote(NetXmethodsServicesStockquoteStockQuoteBinding_Stub.java:96)
     at com.minc.ws.stockquery.proxy.NetXmethodsServicesStockquoteStockQuotePortClient.getQuote(NetXmethodsServicesStockquoteStockQuotePortClient.java:40)
     at com.minc.ws.stockquery.proxy.NetXmethodsServicesStockquoteStockQuotePortClient.main(NetXmethodsServicesStockquoteStockQuotePortClient.java:29)
Caused by: HTTP transport error: javax.xml.soap.SOAPException: java.security.PrivilegedActionException: oracle.j2ee.ws.saaj.ContentTypeException: Not a valid SOAP Content-Type: text/html
     at oracle.j2ee.ws.client.http.HttpClientTransport.invokeImpl(HttpClientTransport.java:142)
     at oracle.j2ee.ws.client.http.HttpClientTransport.invoke(HttpClientTransport.java:118)
     at oracle.j2ee.ws.client.StreamingSender._sendImpl(StreamingSender.java:175)
     at oracle.j2ee.ws.client.StreamingSender._send(StreamingSender.java:112)
     at com.minc.ws.stockquery.proxy.runtime.NetXmethodsServicesStockquoteStockQuoteBinding_Stub.getQuote(NetXmethodsServicesStockquoteStockQuoteBinding_Stub.java:79)
     ... 2 more
Any ideas?
Thanks
Alex

I'm not using 10.1.3 preview. I was using 10.1.3.1 production. I just copied the title of the tutorial as my subject. sorry for the confusion!! :)
I used the HTTP analyzer and this is what I got in the header:
<HTML><HEAD><TITLE>TCP Packet Monitor Error</TITLE></HEAD><BODY>JDeveloper TCP Packet Monitor encountered an error retrieving<P><pre>POST http://216.200.21.157:9090/soap HTTP/1.1
Host: 216.200.21.157:9090
Proxy-Connection: Keep-Alive
Connection: TE
TE: trailers, deflate, gzip, compress
User-Agent: Oracle HTTPClient Version 10h
SOAPAction: "urn:xmethods-delayed-quotes#getQuote"
Accept-Encoding: gzip, x-gzip, compress, x-compress
Content-type: text/xml; charset=UTF-8
Content-length: 680
<env:Envelope xmlns:env="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ns0="urn:xmethods-delayed-quotes"><env:Header><wsse:Security xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd" xmlns="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd" xmlns:env="http://schemas.xmlsoap.org/soap/envelope/" env:mustUnderstand="1"/></env:Header><env:Body><ns0:getQuote env:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"><symbol xsi:type="xsd:string">orcl</symbol></ns0:getQuote></env:Body></env:Envelope></pre><P>The error was :<P><pre>IOException retrieving the response: java.net.ConnectException: Connection refused: connect</pre><P></HTML>
It looks like I'm getting connection refused error... Hmmm.. wonder why?
I'll download 10.1.3.2 and see if that helps..
Thanks for looking into this!
Alex

IDoc to JDBC and JDBC to IDoc Scenario

Dear All,
I am working on IDoc to JDBC and JDBC to IDoc Scenario.
I have to send Idoc from SAP to Non SAP system(.NET application) i almost configured in XI but still i don't know when my INTEGRATION will INVOKE how my data will proceed from IDOC to Oracle database(Through JDBC) and in case of revese how and when Data flow will start.
Does anyone have completed STEP by STEP scenario document for this?
How my Idoc will sent to XI?
How XI will pick up data from IDoc?
How XI will Convert data to JDBC and UPDATE in Oracle Database?
And i reverse case(JDBC to IDoc) when my INTEGRATION will INVOKE?
Where and When i can watch my process and data?
How can i test the whole integration?
I AM GETTING ERROR WHILE TESTING CONFIGURATION IN Integration Directory "Error while refreshing the XI runtime cache" and when i check this in SXI_CACHE it gives me error
"Unable to refresh cache "NO_BUSINESS_SYSTEM"
"Error during last refresh to cache"LCR_GET_OWN_BUSINESS_SYSTEM - NO_BUSINESS_SYSTEM"
Please solve all the above problems i will reward u points
thanks,
RP

Hi,
While we working on IDOC to JDBC interface..
We have to deploy JDBC Drivers?
Go through this links,
/people/varadharajan.krishnasamy/blog/2007/02/27/configuring-jdbc-connector-service-to-perform-database-lookups
http://searchsap.techtarget.com/tip/0,289483,sid21_gci1246926,00.html
To install JDBC driver follow the how to guide.
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/xi/xi-how-to-guides/how%20to%20install%20and%20configure%20external%20drivers%20for%20jdbc%20and%20jms%20adapters.pdf
Configuration of JDBC Adapter for SQL Server
JDBC Driver = com.microsoft.jdbc.sqlserver.SQLServerDriver
Connection = jdbc:microsoft:sqlserver://hostname:<port>;DatabaseName=<DBName>
UserID and Password.
If the connection is not working find the correct port number.
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/40b92770-db81-2a10-8e91-f747188d8033
JDBC- X I - R/3 Scenario
/people/bhavesh.kantilal/blog/2006/07/03/jdbc-receiver-adapter--synchronous-select-150-step-by-step
/people/sap.user72/blog/2005/06/01/file-to-jdbc-adapter-using-sap-xi-30
Please check the driver path as mentioned below.
JDBC Driver : sun.jdbc.odbc.JdbcOdbcDriver
Connection:jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};DBQ=//location of DB table.mdb;
No JDBC driver required.
Receiver JDBC scenario MS access - /people/sameer.shadab/blog/2005/10/24/connecting-to-ms-access-using-receiver-jdbc-adapter-without-dsn
follow this thread
Re: Problem when connecting to MS Access through JDBC Adapter.
SAP Note 850116 has details
/people/michal.krawczyk2/blog/2005/12/04/xi-idoc-bundling--the-trick-with-the-occurance-change
Configuring the Sender JDBC Adapter
http://help.sap.com/saphelp_nw04/helpdata/en/1d/756b3c0d592c7fe10000000a11405a/content.htm
Configuring the Receiver JDBC Adapter
http://help.sap.com/saphelp_nw2004s/helpdata/en/b0/676b3c255b1475e10000000a114084/content.htm
Idoc Reveiver adapter..
http://help.sap.com/saphelp_erp2004/helpdata/en/b9/c5b13bbeb0cb37e10000000a11402f/content.htm
Thanks,
Satya Kumar
/people/michal.krawczyk2/blog/2005/12/04/xi-idoc-bundling--the-trick-with-the-occurance-change
Edited by: SATYA KUMAR AKKARABOYANA on May 8, 2008 5:51 PM

How to avoid hardcoding in RFC Lookup and JDBC Lookup during transport...

Hi All,
We have RFC and JDBC Lookups in some of our scenarios(JDBC to RFC synch)....Now problem is during transport of design objects, we have to change the business system and channel name manually in UDF in target environment....as it wont change although we define the target group in SLD.....we want to avoid this hardcoding.....one idea is we can use a business service inspite of business system and assign the comm channel to it.....this business service will be generic for all environment(dev,qua and prod)...and hence we dnt hav to hardcode....pls let me knw how to achieve or its possible or not....
waiting for ur inputs....
Regds,
Pinangshuk.

Hi,
For RFC lookup you might be doing hardcoding for Business system and RFC channel name.
Options are
1) Create value mapping for Business system. So you can maintain it in Directory part.
2) Keep the RFC channel name same for all system (Development, Quality, Production)
The details of channel can be changed in the Directory part of the respective system

Jsf and tiles

hi all.
i'm developing an application using jsf and tiles.
i've some problem in the general layout page.
how can I refer to images and files,if I don't know where the page will be used?
with struts i've used <html:rewrite page=" ... " /> but it doesn't work with jsf.
I only use the TilesServlet.
any suggestion?
i've also try to define the url like "/css/mycss.css" but in local dosn't work.
thank a lot for any reply!

hi all.
i'm developing an application using jsf and tiles.
i've some problem in the general layout page.
how can I refer to images and files,if I don't know where the page will be used?
with struts i've used <html:rewrite page=" ... " /> but it doesn't work with jsf.
I only use the TilesServlet.
any suggestion?
i've also try to define the url like "/css/mycss.css" but in local dosn't work.
thank a lot for any reply!

Jsf and tiles via myfaces

Greetings:
Please either confirm and/or correct following proposed solution for Myfaces tiles.
Issue: isert a tile definition and attribute in a pure jsf page.
First passed solution: A hybrid of Jsp programming and Jsf. I was able to create a tile page layout in pure jsf except in the portal columns i used old fashion jsp programming to insert a list of portletDefinitions which is extracted from jsf ValueBinding of its managed beans.
The problem with the above approach is that it works well only with html portlet fragments. When a portlet fragment has some jsf elements, the page rendering has conflict of simultaneous rendering between jsf and jsp. The portlet fragments are rendered in a woring place.
Proposed solution: use <h:dataTable ...> to render the portletList and extract the item portletDefinition as following:
<h:dataTable var="portlet"
value="#{portalTabbedBean.selectedPane.serviceListL}" >
<f:verbatim>
<h:outputText
value="<tiles:insert name=#{portlet.portletDefinition} flush='false' /> " />
</f:verbatim>
</h:dataTable>
Note on the name of tiles:insert element, which i just extracted the definition as a jsp variable to make it work in the first hybrid solution:
<tiles:insert name="<%=portletDefinition%>" flush="false" />
Thanks
BaTien
DBGROUPS

I reply this myself. Jsf and Jsp programming either via Jstl or while loop do not go together under current version.
I solve the problem by using Jsp programming and insert the portlet tile fragment directly rather than though a portlet template with different tile content attribute. The portlet tile is created as <h:panelGrid ...> and observe the set rules to make Jsf and jsp working together. Hopefully Jsf and Jsp will be able to work together nicely in their next specifications.

JSF And Struts Integration

Can any body give some info on integration of JSF to existing struts application

I describe the main differences between JSF and Struts in this sample Chapter from my JSF book:
http://www.oreilly.com/catalog/jsvrfaces/chapter/ch01.pdf
Hope that helps.

Using JSF and JavaMail to send Automated Email

Hi All,
Can any one please suggest I can use JSF and JavaMail to send automated email messages i.e after a person has successfully completed a form , a message is sent to his/her email address confirming that he has succesfully registered or completed a form. I have succesfull implemeted the use of javamail for sending email meassages in a JSF web application but cant seem to figure out how i can achieve automated sending of emails in JSF. Please any ideas, tutorials or source code would be very much appreciated.
Thanks.

I don't understand your problem:
You have already been able to send e-mails from a JSF webapplication, but you are not capable of sending e-mails from a JSF webapplication?!
Automated sending of e-mails will be exactly the same as non-automated.

Using JSF and tiles

Hi Friends,
I'm trying to combine JSF and tiles as follows:
Template file:
<f:subview id="content">
<tiles:insert attribute="content" flush="false"/>
</f:subview>
content file:
<tiles:insert definition="userSpecific">
<tiles:put name="content" type="string" >
<h:outputText value="aaaa"/>
</tiles:put>
</tiles:insert>
I get the following error when loading the content file:
2007-06-20 10:14:10,578 [http-8080-Processor23] ERROR org.apache.myfaces.shared_impl.taglib.UIComponentTagUtils - Component javax.faces.component.UIViewRoot is no ValueHolder, cannot set value.
I tried putting the template content in a verbatim tag and then it works
but the content page is not displayed in correct place in the template...
Thanks a lot in advance!

Are you dead set on using tiles? I can see tiles including JSF but JSF including tiles? Not sure if that will work.
My suggestion is to use Trinidad. It has the concept of Regions which is very "tiles" like and you will be far more successful.

JSF and Struts - differences and integration goal.

I am a newbie J2EE developer and I am not clear about main differences between JSF and Struts also I saw couple of articles describing integration between JSF and Struts. Could someone give me an explanation, what the main conceptual differences between those technologies and what's the goal of integration both of them?

I describe the main differences between JSF and Struts in this sample Chapter from my JSF book:
http://www.oreilly.com/catalog/jsvrfaces/chapter/ch01.pdf
Hope that helps.

JSP, JSF, and ADF

I've just started playing around with this and was looking for samples/tutorials to help. Of the tutorials/samples I've seen, they appear to fall short of explaining an end-end example and stick mostly to JSF and the backing bean - usually displaying static data within a JSP and navigation. I'm a bit confused on how to call custom methods in my business services (application modules) and in turn use the view objects to fetch data from my database and display the results within a JSP using the JSF components.
I realize the latest preview JDeveloper is without ADF but while I had time I was hoping to play around with ADF Faces to hit my development database. Guess I'm trying to make sense of how JSP, JSF, Business components, and my db connection all play together in order to set up a decent starting point for an app.

You could use Jdeveloper 10G and play around with ADF Faces, look at the demos, and the sources behind them.
There are a couple of papers on OTN like...
Working with ADF Faces in JDev 10g:
http://www.oracle.com/technology/products/jdev/howtos/10g/adfjsf/how-to-adf-faces-10gjdev.htm
Roadmap for ADF Faces:
http://www.oracle.com/technology/products/jdev/collateral/papers/9.0.5.0/adfuix_roadmap/adfuix_roadmap.html
And many more... as I could find upon search...
http://www.oracle.com/ultrasearch/wwws_otn/searchotn.jsp?p_Action=Search&p_Query=adf+faces
The visual editing support for 'The ADF Model access through ADF Faces bindings' is under development (hence no tutorials), and will be available in future release (could be post 10G release).
-Udupa

JSF and Character Sets (UTF-8)

Hi all,
This question might have been asked before, but I'm going to ask it anyway because I'm completely puzzled by how this works in JSF.
Let's begin with the basics, I have an application running on an OC4J servlet container, and am using JSF 1.1 (MyFaces). The problems I am having with this setup, is that it seems that the character encodings I want the server/client to use are not coming across correctly. I'm trying to enforce the application to be UTF-8, but after the response is rendered to my client, I've magically been reverted to ISO-8859-1, which is the main character set for the netherlands. However, I'm building the application to support proper internationalization; which means I NEED to use UTF-8.
I've executed the following steps to reach this goal:
- All JSP files contain page directives, noting the character set:
<%@ page pageEncoding="UTF-8" contentType="text/html; charset=UTF-8" %>I've checked the generated source that comes from the JSP's, it looks as expected.
- I've created a servlet filter to set the character set directly on the request and response objects:
    public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
        // Set the characterencoding for the request and response streams.
        req.setCharacterEncoding("UTF-8");
        res.setContentType("text/html; charset=UTF-8");
        // Complete (continue) the processing chain.
        chain.doFilter(req, res);
    }I've debugged the code, and this works fine, except for where JSF comes in. If I use the above situation, without going through JSF, my pages come back UTF-8. When I go through JSF, my pages come back as ISO-8859-1. I'm baffled as to what is causing this. On several forums, writing a filter was proposed as the solution, however this doesn't do it for me.
It looks like somewhere internally in JSF the character set is changed to ISO. I've been through the sources, and I've found several pieces of code that support that theory. I've seen portions of code where the character set for the response is set to that of the request. Which in my case coming from a dutch system, will be ISO.
How can this be prevented? Can anyone give some good insight on the inner workings of JSF with regards to character sets in specific? Could this be a servlet container problem?
Many thanks in advance for your assistance,
Jarno

Jarno,
I've been investigating JSF and character encodings a bit this weekend. And I have to say it's more than a little confusing. But I may have a little insight as to what's going on here.
I have a post here:
http://forum.java.sun.com/thread.jspa?threadID=725929&tstart=45
where I have a number of open questions regarding JSF 1.2's intended handling of character encodings. Please feel free to comment, as you're clearly struggling with some of the same questions I have.
In MyFaces JSF 1.1 and JSF-RI 1.2 the handling appears to be dependent on the raw Content-Type header. Looking at the MyFaces implementation here -
http://svn.apache.org/repos/asf/myfaces/legacy/tags/JSF_1_1_started/src/myfaces/org/apache/myfaces/application/jsp/JspViewHandlerImpl.java
(which I'm not sure is the correct code, but it's the best I've found) it looks like the raw header Content-Type header is being parsed in handleCharacterEncoding. The resulting value (if not null) is used to set the request character encoding.
The JSF-RI 1.2 code is similar - calculateCharacterEncoding(FacesContext) in ViewHandler appears to parse the raw header, as opposed to using the CharacterEncoding getter on ServletRequest. This is understandable, as this code should be able to handle PortletRequests as well as ServletRequests. And PortletRequests don't have set/getCharacterEncoding methods.
My first thought is that calling setCharacterEncoding on the request in the filter may not update the raw Content-Type header. (I haven't checked if this is the case) If it doesn't, then the raw header may be getting reparsed and the request encoding getting reset in the ViewHandler. I'd suggest that you check the state of the Content-Type header before and after your call to req.setCharacterEncoding('UTF-8"). If the header charset value is unset or unchanged after this call, you may want to update it manually in your Filter.
If that doesn't work, I'd suggest writing a simple ViewHandler which prints out the request's character encoding and the value of the Content-Type header to your logs before and after the calls to the underlying ViewHandler for each major method (i.e. renderView, etc.)
Not sure if that's helpful, but it's my best advice based on the understanding I've reached to date. And I definitely agree - documentation on this point appears to be lacking. Good luck
Regards,
Peter

JSF and JDBC

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