I'm migrating old projects from JSF 1.2 to JSF 2.0.
The projects are JSP based.
I'm having trouble with implicit navigation after the migration.
The action methods that return values (Let's say, for internal use) cause JSF to try to navigate to non existing pages.
For example, a method that return "Error" will make the browser try to access /Error.jsp which will result in a 404.
I would like, for these projects, to turn off implicit navigation.
Is that possible?
Thanks!
No, that's not possible. It's however planned for JSF 2.2, see also JSF spec issue 937.
What is it, the internal use for which you're trying to (ab?)use navigation outcomes? Exception handling? You might want to throw a normal exception instead and handle it the usual way.
Related
I'm currently trying to use PrimeFaces (not mobile) for my WebSphere 8.0 application. The basic stuff like p:dataTable seems to work. But if I want to use the fancy stuff of PrimeFaces, like filter columns or pagination, there is either a NullPointerException or the additional function is not rendered at all.
The Nullpointer occurred when entering something in the generated filtering field in the table. The setter method that is called is given null as parameter.
The pagination on the other hand is not even being rendered. (I used the templates of the PrimeFace showcase)
Weird thing is, the sorting by column function is working fine.
I haven't done any big adjustments, just put the .jar file to my classpath and disabled all themes of PrimeFaces in my web.xml. That's it.
When I inspect the network and stuff in chrome there is no exception thrown in the console when loading the page.
Now I'm thinking that this version of PrimeFaces is not compatible with MyFaces2.0 that is used by WAS8.0.
Is that the case? If so, what version of PF would be compatible? Or would it be possible to load a newer Version of MyFaces and dependencies and put it in WAS to use this version instead of the current used version?
Or maybe I have to make some adjustments to my application?
If everything is not possible, do you know an alternative to PF to easily create tables?
Using a third-party JSF provider with WebSphere is documented here (the doc is for 8.5.5, but it's the same procedure in 8.0): https://www.ibm.com/support/knowledgecenter/en/SSAW57_8.5.5/com.ibm.websphere.nd.doc/ae/tweb_jsf.html
Basically, the answer is to put your provider (along with the corresponding API) into a shared library, set that library to use an isolated class loader, and associate that shared library with your web app. That will tell the web module's class loader to search your shared library before it delegates to server class loaders, and it'll find your JSF provider first when your app attempts to use JSF.
I'm exploring the JSF 2.2 Faces Flow feature but I'm still not sure what are the advantages of defining a flow using Faces Flow instead of using the normal navigation system (calling facelets in links or buttons)?
Only use it if you want to use a #FlowScoped bean on a given set of views. In other words, only use it if you want a managed bean which should live as long as you're navigating through the specified collection of views registered in the flow configuration file.
There are indeed very few real world use cases for this. They all boil down to a multi-step wizard of which each step is bookmarkable. Previously, before the introduction of the flow scope, one would use conditionally rendered includes for this, but they are in turn not individually bookmarkable, because the URL stays the same all the time.
See also:
What is new in JSF 2.2? - Faces Flow
Java EE 7 tutorial - Using Faces Flows
How to navigate in JSF? How to make URL reflect current page (and not previous one)
Faces flow and navigation are different.
Face flow like business flow in the frond end site, much like wizard.
I am new to jsf.
I am working on migration project.
In this I need to migrate from jsf1.2 to 2.1
and richfaces as well..
In general what I need to change?
I have one more requirement that navigation rules must be quoted explicitly in faces-config.xml?
How to write these rules in faces-config.xml?
Thanks in Advance
First you should understand that this is a painfull to migrate from JSF 1.x to jsf 2.x but it is even more painfull to migrate from Richfaces 3 to Richfaces 4.
JSF 1.x to 2.x upgrade can be done independently from Richface upgrade. So I would recommend you first update JSF and check that everything is working and only after that try updating Richfaces. Look at this question about JSF migration for more info. Or just google it. There is a lot of info about it.
Richfaces 3 to 4 migration is very very painfull because JSF 2 introduced it's own ajax and you will need to change a lot of attributes all overt the project. But the biggest pain is that Richfaces 3 work much more stable than Richfaces 4. Richfaces 4 is very buggy. I can list some bugs that I encountered and some solutions for them.
rich:autocomplete is very buggy. Not sure if it is fixed already
but when I tried using it it was not working with Spring in
composite views(<ui:include pages). After I sumbitted bug report
they seem to do something there but not sure if this works now. I
didn't check. https://issues.jboss.org/browse/RF-11469
I would advise you to replace this component with simple jQuery UI
autocomplete component with some spring mvc controller on backend.
rich:tabPanel is very buggy. Separate tabs do not have action
attribute any more. This was breaking functionality with initing tab
contents when the tab was opened with ajax. Immediate attribute also
not working for tabs. Here is the issue on jboss jira: https://issues.jboss.org/browse/RF-11417 workaround is really stupid.
I just went into source code of richfaces and made it working.
Exception handling is very buggy. Seems that exceptions are just
swallowed in many places in richfaces source on ajax requests so you
can not handle them the right way.
I went again into Richfaces code and removed exception swallowing by
throwing out exceptions.
rich:fileUpload component can work and can not work for you. You
can get request prolog can not be read exception in some
cases(This is what I was getting). And This is connected with new
app server feature of reading multipart request into
request.getParts(). And Richfaces do not handle such situation and
error out because inputstream of multipart request is already read
fully.
I again went to source code of Richfaces and added catch for
situation when request.getParts is not empty. I even created an
issue on Jboss but guys said this works on new Jboss server that's
why it is not an issue(I use tomcat). https://issues.jboss.org/browse/RF-13061 the issue is close still it is not working on tomcat.
A lot of issues on client side. By default multiple forms will not
work on your pages like they were working in jsf 1.2 and richfaces 3
because the viewstate id is not updated where and when it needs to
be.
To fix this you will need to add additional script. It is described
in the answer to this question
Also on the client side you should know that if in the response of
any ajax request you will have some js that will fail everything
stops working. You can not have js errors inside xhtml. The page
will freeze completelly. Also it is tricky to have CDATA tags on
the xhtml pages. They can also fail.
Richfaces messages work the way that sometimes they show up and
sometimes not. They are ajax rendered but seems that they can break
the page. Ajax reposnse can have an update that should update
messages that is not rendered on the page and when it will not find
this message in your html it will stop rendering everything that is
left to update. As a result your links and buttons will not rerender
anything in some cases.
Here evaluating limitRenderattribute helps a lot.
It is a short list. There probably a lot more to be aware of and that you will see after update =)) Richfaces 4 are still buggy.
I'm trying to use ace:fileEntry to upload a picture, as I read this component requires a submit from h:commandButton in order to start downloading. My problem is that when I switched my ice:commandButton with h:, my managed bean (which is in Conversation Scope) gets created again (#PostConstruct called) and the method in h:commandButton and also the fileEntryListener aren't called anymore.
And as another problem that might be causing this is that when I first enter my page the managed bean gets created and I call conversation begin, but when I do a second request (from a commandLink) the managed bean is created again, and a new conversation is started, after that you can play how long do you want the managed bean doesn't get created again.
Back to my initial question, if I have ice:commandButton the managed bean ins't created again, if it's with h: it gets created again.
And to add a little bit more fun in it, if I remove the rendered attribute (which resolves to true) from ace:fileEntry the fileEntryListener is called, but the action from h:commandButton isn't called no matter what.
I tried to add explicit ids to the components, tried to change ice:form with h:form .. nothing. Please Help.
Ps: why ICEfaces 2 can't work with all ice components, why does it requires h:commandButton, instead of ice:commandButton, why the new JSF 2.0 stuff with f:selectItems backed by a regular list isn't working with ice:selectOneMenu, works just with h:selectOneMenu ? What's up with ICEfaces ? And why CDI doesn't work as expected, with Seam 2 also I had problems with conversations called twice .. ps2: if I don't navigate to another view ?cid=1 isn't present in the URL.
Now, with ace:fileEntry and h:commandButton, the reason why the ice:commandButton can not be used is because that is an AJAX component, and browsers will not upload files in an AJAX submit. Even with HTML5 it is not automatic, and new File and XmlHttpRequest APIs must be used. In an HTML4 browser, only a full page, full form, submit will upload the file contents, and only h:commandButton operates that way. For more details, you can see this explained near the top of the page at:
http://wiki.icefaces.org/display/ICE/FileEntry
With our ice: components, which are extended variants of the h: components, such as ice:selectOneMenu, they are lacking some new JSF 2 features because we have been focusing on our newer Advanced Component Environment, due to customer demand for rich client-side components. As well, the focus was on maintaining backwards compatibility with the ice: components, to ease customer migration from ICEfaces 1.8.x to ICEfaces 2.x, and less so to be altering those components' behaviours. But we are still actively maintaining and improving the ice: components, and will be adding the new features soon. Feel free to create any enhancement requests in our Jira system, and to vote on any existing entries, as this does guide our development priorities.
http://jira.icefaces.org/
Mark Collette
I'm Mark Collette from the ICEfaces component team, and hopefully I can answer some of your questions.
Most of your issues seem more related to CDI integration than problems with the components themselves. I know that the symptoms change depending on which component you use, but I think that's because the ice: components use AJAX and the h: components do not. Many times integration issues with other frameworks are more observable in AJAX interactions than in full page GET/POST interactions. So your issues may be due to either our CDI integration, or your application's configuration. So please review our documentation on using ICEfaces with CDI, and if you you still experience any issues, I recommend posting the details to our forums.
http://wiki.icefaces.org/display/ICE/Using+ICEfaces+with+CDI
http://www.icefaces.org/JForum/forums/list.page
[Sorry, but this forum is not letting me post more than 2 links, so I'll split the rest of my message into another post, and hopefully that will work]
Mark Collette
I want to use reCaptcha on my project with JSF. Corresponding primefaces component doesn't want to work properly inside wizard component. I decided to try to use the code from example for JSP http://code.google.com/intl/en-en/apis/recaptcha/docs/java.html I can not understand how best to remake it to JSF. The problem is in java code injection into JSP and result validation via FacesValidator.
Can someone have any ideas?
Take a look at tomahawk t:captcha on MyFaces SVN. The code only use the standard JSF API (it was updated to use JSF 2.0 ResourceHandler API), so it can help you to build your own using recaptcha.