java.lang.NullPointerException: java.lang.String.getBytes(String.java:811)

[Marc G. Fournier]

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- --On Tuesday, December 19, 2006 09:27:08 -0800 Greg Lewis 
<glewis at eyesbeyond.com> wrote:

> On Mon, Dec 18, 2006 at 08:58:14PM -0800, Nick Johnson wrote:
>> Just a guess, but there's a version of getBytes that takes a character set
>> name as an argument, which would probably throw a NullPointerException in
>> the event that the argument you passsed it was a null string.
>>
>> Take a look at
>> http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html#getBytes(java.
>> lang.String)  and see if there's a chance that your HttpServletWrapper line
>> 346 could be  passing null for the character set name.
>
> Even better, look at String.java, line 811 (per the stack trace):
>
>        if (charsetName == null) throw new NullPointerException();
>
> Makes it pretty clear :)

Clear for someone that has a clue about Java ... :)

'k, just unzip'd src.zip so that I can look at the code there ... now, you show 
java 1.4.2 above for this, so obviously this problem will exist if I downgrade 
from 1.5.x ...

The server used to run on FreeBSD 4.x, 32bit + jdk 1.4.2 ... it is now on 
FreeBSD 6.x, 64bit and diablo 1.5.0 ... could/would any of those changes have 
affected anything?


>
>>    Nick
>>
>> On Mon, 18 Dec 2006, Marc G. Fournier wrote:
>>
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>> >
>> > Hate to ask when I don't believe I have near enough information, but my
>> > knowledge o Java is so small that I don't even know where to begin
>> > debugging ...
>> >
>> > Have a client running an application, that, when run on an older FreeBSD
>> > 4.x  machine, with jdk from ports, ran great ...
>> >
>> > Recently, upgraded them to FreeBSD 6.x, with Diablo, and from a 32bit
>> > server to  a 64bit server, and now whenever they submit certain forms on
>> > the site, it  generates the following error:
>> >
>> > java.lang.NullPointerException
>> > 	java.lang.String.getBytes(String.java:811)
>> > 	org.dataisland.wrapper.servlet.HttpServletWrapper.streamDocument(HttpServ
>> > 	letWrapper.java:346)
>> > 	org.dataisland.wrapper.servlet.HttpServletWrapper.serveDataIsland(HttpSer
>> > 	vletWrapper.java:316)
>> > 	org.dataisland.wrapper.servlet.HttpServletWrapper.service(HttpServletWrap
>> > 	per.java:277) javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
>> > 	org.opencommerce.iface.servlet.filter.Secure.doFilter(Secure.java:64)
>> >
>> > The site *appears* to work fine otherwise ... its an e-commerce site, and
>> > I can  add products to my shopping cart, search the database, etc ... but,
>> > for  instance, if I try to update my profile, or they try and update
>> > prices, the  above happens ...
>> >
>> > Can someone suggest what, if anything, I can do to debug this a bit more
>> > intelligently?
>> >
>> > Thanks ..
>> >
>> >
>> > - ----
>> > Marc G. Fournier           Hub.Org Networking Services (http://www.hub.org)
>> > Email . scrappy at hub.org                              MSN . scrappy at hub.org
>> > Yahoo . yscrappy               Skype: hub.org        ICQ . 7615664
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>> > _______________________________________________
>> > freebsd-java at freebsd.org mailing list
>> > http://lists.freebsd.org/mailman/listinfo/freebsd-java
>> > To unsubscribe, send any mail to "freebsd-java-unsubscribe at freebsd.org"
>> >
>>
>> --
>> When you're a kid, they tell you it's all grow up, get a job, get married,
>> get a house, have a kid, and that's it.  No, the truth is the world is so
>> much stranger than that.  It's so much darker, and so much madder.
>> And so much better.
>>   -- Elton, Doctor Who, "Love and Monsters"
>> This message has been brought to you by Nick Johnson 2.1 and the number 6.
>> http://healerNick.com/       http://morons.org/        http://spatula.net/
>> _______________________________________________
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>> http://lists.freebsd.org/mailman/listinfo/freebsd-java
>> To unsubscribe, send any mail to "freebsd-java-unsubscribe at freebsd.org"
>
> --
> Greg Lewis                          Email   : glewis at eyesbeyond.com
> Eyes Beyond                         Web     : http://www.eyesbeyond.com
> Information Technology              FreeBSD : glewis at FreeBSD.org



- ----
Marc G. Fournier           Hub.Org Networking Services (http://www.hub.org)
Email . scrappy at hub.org                              MSN . scrappy at hub.org
Yahoo . yscrappy               Skype: hub.org        ICQ . 7615664
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