Hi Deniz,
I think other people will have a better solution for your email, I just
did the following testing :-)
0
a in the sample code of a book -- "Mastering EJB and ..."
of Ed Roman -- [ISBN 0-471-33229-1], I find the following
line:
response.sendRedirect(response.encodeUrl("<sevlet name>"));
b I write two Servlet class -- servlet_ht and servlet_ht2
c I write a Java Application which communicates to
servlet_ht. ( I guess perhaps "Applet Servlet
Communication" is similar with "Application Servlet
Communication" )
d
* I use J2SE1.3 + Jsdk2.1 as Servlet engine
* I use J2SE1.3 to run my Java Application
1
[a] first I did a testing -- my Application [send + read] --
* in my Application, first I send a String to servlet_ht, so now
"doPost" of servlet_ht has been "invoked".
* then in "doPost" of servlet_ht, first I "read" this String, then
INSTEAD OF send back something to my Application
directly, I use the following:
response.sendRedirect(response.encodeUrl("/servlet/servlet_ht2"));
* now the "doGet" of servlet_ht2 has been "invoked", and I send back
another String to my Application in "doGet" of servlet_ht2.
* then my Application read this String.
[b] I also did another kind of testing -- my Application [only read] --
* in my Application, first I try to read a String from servlet_ht, so
now
"doGet" of servlet_ht has been "invoked".
* then in "doGet" of servlet_ht, INSTEAD OF send back something to
my Application directly, I also use the following:
response.sendRedirect(response.encodeUrl("/servlet/servlet_ht2"));
* now the "doGet" of servlet_ht2 has been "invoked", and I send back
another String to my Application in "doGet" of servlet_ht2.
* then my Application read this String.
[c] So from my testing [a] and [b], BOTH in "doGet" or "doPost"
of servlet_ht, I all can "sendRedirect" to servlet_ht2. This
is different from what you described in your email, please
try :-)
2
BTW, now I find a mistake in one of my emails about one month ago :-)
NOW I think in "Applet/Application Servlet Communication", we can
"invoke" both "doGet" and "doPost" with "URLConnection/HttpURLConnection",
but it depends on what we do in our Applet/Application --
[a] if we don't explicitly set "GET/POST" with
HttpURLConnection.setRequestMethod("GET/POST");
then:
* if we first "read", then "doGet" will be "invoked" ;
* if we first "send", then "doPost" will be "invoked" ;
[b] We also explicitly set "GET/POST" with
HttpURLConnection.setRequestMethod("GET/POST");
3
and I have a question:
How can I "invoke" the "doPost" of servlet_ht2 FROM servlet_ht
with the following ?
response.sendRedirect(response.encodeUrl("/servlet/servlet_ht2"));
Because now I find I only can invoke "doGet" of servlet_ht2 :-)
Thanks in advance!
Bo
Oct.08, 2000
Deniz Demir wrote:
> Hi,
>
> I have written a servlet and applet for login process. they communicate
> with each other by URLConnection. I want to get a new page after
> conversation. I have read so many archived mails of this mail list. I
> orginaly wanted to use sendRedirect() after communication, since the
> URLConnection is made in doPost method, I tried to sendRedirect in
> doPost method. But it didn't work. And then I gave up and I tried to use
> applet's showDocument() method. But in this case the following page (a
> jsp) had a different session ID, so I could not get the objects which I
> put into session in servlet.
>
> I could not find any solution, what can I do?
>
> Deniz...
>
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