I have the following in a jythonc program to be executed in a html
file.
f1 = open("filename" ,"r")
I get message about filePermission read error. Program compiles and
jar file is created. Just the html code gives message.
Any ideas?
Jul 18 '05
13  2193 
>> As I said - search google for JAVA APPLETS ACCESSING LOCAL FILES - then you can do that using jython. As a matter of fact, the whole process has
to do with signing jars - nobody cares if these contain classes generated
by javac, jikes, jythonc or carefully handwritten jvm bytecode....
So does that mean that a jre does not have to be on the local pc? The
local pc does not have to set policies, etc. If that is true, then all
I've said about jython I take back. It is truly useful!
What exactly makes you conclude this from my above statements? And did you
even _think_ for a moment to follow my and others suggestions to search on
google?
--
Regards,
Diez B. Roggisch
Alan Kennedy <al****@hotmail .com> wrote in message news:<iQ******* ***********@new s.indigo.ie>... [John Howard] So does that mean that a jre does not have to be on the local pc?
No: there *must* be a JRE on the local PC: how could the java/jython run
at all without an execution environment?
The JRE on the local PC is the very thing that is preventing you from
reading files from local drives.
If you want to, you can permit any and all applet to load files from
your local drive. In Internet Explorer, select
"Tools->Options"->Security->Custom Level->Microsoft VM->Java
Permissions->Custom->Java Custom Settings.
In that control panel you can disable all of the protections that your
browser puts in place to protect you from hostile applets on the
Internet at large. Feel free to dismantle those security barriers, at
your own risk: by doing so you're opening the contents of your hard-disk
to the world. I Hope you're not storing any private or sensitive
information on there.
The local pc does not have to set policies, etc.
No, that's precisely where you set policies. Where else could they be set?
Alternatively, as others have pointed out multiple times, you can
digitally sign your applets so that they can be recognized and thus
given more permissions than unknown applets.
I said jre, but meant jvm. But your answer is revealing also! From
what you are saying, it is NOT possible to have a html page that can
access a local file unless at least a jre is present. Again, not good.
I think I'll just write the whole project in C. Forget jython! py*******@yahoo .com (John Howard) wrote in message news:<9e******* *************** ****@posting.go ogle.com>... Alan Kennedy <al****@hotmail .com> wrote in message news:<iQ******* ***********@new s.indigo.ie>... [John Howard] So does that mean that a jre does not have to be on the local pc?
No: there *must* be a JRE on the local PC: how could the java/jython run
at all without an execution environment?
The JRE on the local PC is the very thing that is preventing you from
reading files from local drives.
If you want to, you can permit any and all applet to load files from
your local drive. In Internet Explorer, select
"Tools->Options"->Security->Custom Level->Microsoft VM->Java
Permissions->Custom->Java Custom Settings.
In that control panel you can disable all of the protections that your
browser puts in place to protect you from hostile applets on the
Internet at large. Feel free to dismantle those security barriers, at
your own risk: by doing so you're opening the contents of your hard-disk
to the world. I Hope you're not storing any private or sensitive
information on there.
The local pc does not have to set policies, etc.
No, that's precisely where you set policies. Where else could they be set?
Alternatively, as others have pointed out multiple times, you can
digitally sign your applets so that they can be recognized and thus
given more permissions than unknown applets.
I said jre, but meant jvm. But your answer is revealing also! From
what you are saying, it is NOT possible to have a html page that can
access a local file unless at least a jre is present. Again, not good.
I think I'll just write the whole project in C. Forget jython!
You know, maybe I am making too much of this. I am thinking - if a jre
is there, why not just run the program as a java program?! Just have
the client load the jre and that should do it. Am I not correct?
Having thought the whole C thing over, python is still the way to go.
I apologise for being so nasty. I really did not mean to offend
anyone. You took time to respond and I do appreciate it.
Thanks!!
John Howard wrote: Having thought the whole C thing over, python is still the way to go.
Something I've done a couple of times in the past is to follow Bruce
Eckel's "Browser as Desktop UI" model
( http://mindview.net/WebLog/log-0045). I've created a web-based
application that runs on a "client" or standalone machine. You can
either use the Python built-in SimpleHTTPServe r or CGIHTTPServer, or,
preferably, one of the Python web frameworks like CherryPy that creates
a standalone server for you. I can definitely highly recommend
CherryPy. Anyway, a standalone CherryPy server running your application
would likely solve all your problems. You just have to have Python
installed and (currently) only one .py file.
Jeremy This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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--
Henri Sivonen
hsivonen@iki.fi
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