Hi, what is default method in servlets?

hi,
i am not mentioned any method in my servlet program,
so what is the default method either get or post?
jp

Hi
If you what to provide the same stuff for both
POST/GET HTTP request you can use the service method:
public void service(ServletRequest req,
ServletResponse res)
throws ServletException,java.io.IOException /Tobiaswhen reading 'More Servlets And Java Server Pages' you are discouraged to use service(), unless you want to do some of the preprocessing yourself. (sorry, I don't exactly, what is done before doGet()/doPost() are called...)

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does any one know whats the default method in Struts... GET or POST

I suppose you're talking about the form tag. Then that's POST,
unlike the HTML form.

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Does anyone know how to set default method for Abap OO Object?
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Thanks.

Hello,
Thanks for taking the time to close off your question. However if you close a thread without an answer then it would be nice to post the answer for folks who search the forum with the same query later on.
For what it's worth, BI_OBJECT~EXECUTE_DEFAULT_METHOD is always the default method. In here you can add code to call any other method.
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. There might be an authorisation issue. but i am not confirm.
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Hi Naval,
Is it a custom business object....make sure that the status of all object components are set to Implemented or released..and regenerate the Object...
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Workflows : Unable to call a report from a Default Method of Business Objec

Hi,
Good afternoon.
Well, we had a requirement where a Business Object's Default method should call a report which in turn calls a User Defined Screen(Call Screen 100 say...) which had a Text Control with one OK button.
In this requirement, I had created a method with all the above functionality and then tested the BUSINESS OBJECT accordingly. Well, when Testing the BO directly, I am able to get my REQUIREMENT satisfied like the METHOD is working PERFECT as per the requirement.
Now I made it as an DEFAULT METHOD and used the same BO for a workflow. And that Workflow gets triggered with an Event within that BO. So the instance of this BO is coming to the Workflow.
Now, I created a new Decision step and copied the standard step's task into a new Standard task. And I included this task for my new DECISION STEP. In this standard task , I had created a CONTAINER Varaible for my BO.And in my WORKFLOW, I had passed the instance of my BO in the BINDING PART of this Decision Step.
Now, my objects and Attachments part had an HYPERLINK, but it is not executing the needed method. Why is it so?
Do we had any limitation for this?
Shouldn't we call any report which calls a user defined screen from a method ?
Is there any way for solving the above problem?
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Someone please help me.
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Raja Sekhar

Hi Raja,
Well it is not yet afternoon for me. In fact the work day just about started
Have you tried debugging it? Put a break point in your default method and click on the object link from the inbox and see if your method is getting executed and if it is you may find what the problem is.
Also, have you tried with a different default method like a display method and checked if it works?
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Ramki Maley.

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Hi
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What's wrong with my servlet code ?


Hi,


I need to redirect user from jsf application to PHP app with some request attributes using POST method. To check how to do at first I prepared simple servlet:


public class TestServlet extends HttpServlet {
 public void doPost(HttpServletRequest req, HttpServletResponse res) throws ServletException,


 IOException {
 req.setAttribute("p1","Value One");
 req.setAttribute("p2","Value Two");
 res.sendRedirect("http://www.mycompany.pl/test.php");
 public void doGet(HttpServletRequest request, HttpServletResponse response)throws IOException,


 ServletException{
 doPost(request,response);


I also prepared simple PHP page to display these attributes (Im sure this page works correct):


<html>
<body>
Attribute p1: <? echo $_POST["p1"]; ?> 
Attribute p2: <? echo $_POST["p2"]; ?> 
</body>
</html>


Te problem is that attributes from servet don't displayed on PHP page - why. What is wrong wit this servlet ?


Kuba


Well if this line of code works for you:
res.sendRedirect("http://www.mycompany.pl/test.php");
you could append parameters by building the url string dynamically.
res.sendRedirect("http://www.mycompany.pl/test.php?p1=ValueOne&p2=ValueTwo");
Isn't PHP a server technology, if yes why don't you do all the work in php (you'll avoid cookie problems)?
Regards
Fred
PS I don't think this forum is the right place for php questions.

Default methods

I read the Java tutorial on default methods and I think I understand how interfaces may evolve without loss of backward compatibility. My question refers rather to how should we design our interfaces from scratch. If and when should we define default methods? As an extreme example, why not design MyNewInterface with all default methods? If some operation makes sense, fine, stick the appropriate code in there, and if not, just do nothing, return null, return 0, return false. This would give the implementers of my interface quite some freedom what to care about, depending on their application needs and would make their apps less verbose (kind of like what the awt Adapter classes achieve). I don't look for an approval of this approach, but at some guidelines. Hope this makes sense.
Edit: And one more question from someone involved a lot with libraries for external clients. Does it make sense to rewrite old interfaces in a new release of the library and turn some methods into default methods containing code that makes sense? This option was not available so far and users had to write sometimes trivial implementations.

So:
cool stuff for backward compatibility
probably not as compatible as you think
but...
how should we design new interfaces?
For *new* interfaces, including default methods is not going to break anything (at least, not immediately, see later). I think, use this sparingly: if you genuinely have an example of "every object of this type should have this functionality", *and* there's an obvious default implementation, then that's probably a good case for using default methods.
So , consider a DAO interface. You'll commonly want to get an object via it's id. The database stores the id as an int, and the corresponding class has an id field of type Integer. So it's fairly intuitive to define
public interface DAO {
public Entity getEntity(int id) ;
But... all (or the vast majority) of my use cases are in a web application, and of course the only data type http knows about is String. So at some point, I get a request parameter representing the id as a String, and have to convert it to an int in order to get the entity from the DAO. In other words, I end up doing this:
DAO dao ;
String idFromRequest = request.getParameter("id");
Entity entity = dao.getEntity(Integer.parseInt(idFromRequest));
I end up really needing DAO to support a
public Entity getEntity(String id);
method, but do I really want to force all implementations to implement it to call Integer.parseInt(...) to invoke the other method?
I could, of course, define an AbstractDAO class that adds the method in, but then I lose the whole "programming to interfaces" paradigm.
So that would (at least, on the surface) appear to be a nice use case for default methods.
You should still worry a bit. Even if I put a default method into a new interface, any classes that implement that interface and some other interface are vulnerable to breaking if the other interface later introduces a default method with the same signature as my default method. So you might want to think about making those default method names quite specific.
Default methods should be used sparingly. If you add dozens of them to your libraries, you increase the risk of problems caused later by classes not being able to resolve calls unambiguously.

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Hi
I was using the session bean.Your suggestion helped me a lot.Perfect.
I debug my program and found that from ejbCreate()exception is getting.
I was getting the datasource object thro ejb create() initialisation.
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<resource-ref>
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Piece of code from ejb-jar.xml
<resource-ref>
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Best Regards,
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Hi Vohar,
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Hi, what is default method in servlets?

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