java.lang.nullpointer exception

Unknown

I have the latest version of java installed on my machine.
I'm getting the following message when I'm running sahi.bat

C:\>cd sahi_20091130

C:\sahi_20091130>cd sahi

C:\sahi_20091130\sahi>cd bin

C:\sahi_20091130\sahi\bin>sahi.bat

---

SAHI_HOME: ..
SAHI_USERDATA_DIR: ..\userdata
SAHI_EXT_CLASS_PATH:

---

Sahi properties file = C:\sahi_20091130\sahi\config\sahi.properties
Sahi user properties file = C:\sahi_20091130\sahi\userdata\config\userdata.prope
rties
>>>> Sahi started. Listening on port: 9999
>>>> Configure your browser to use this server and port as its proxy
>>>> Browse any page and CTRL-ALT-DblClick on the page to bring up the Sahi Cont
roller
Sahi OS properties file = C:\sahi_20091130\sahi\config\os.properties
Exception in thread "Thread-0" java.lang.NullPointerException
at net.sf.sahi.util.Diagnostics.run(Diagnostics.java:13)
at java.lang.Thread.run(Unknown Source)

I do not know why I'm getting the null pointer exception?

narayan

Sathiya,

I do not think this exception will bother your Sahi usage. The diagnostics information is fetched for the info tab on the Sahi controller. Basically to help debug whether some dependencies are available on your system. If things are working properly, don't worry about this error.

Btw, if Sahi is otherwise working properly, could you please post the information on your info tab?
It will help us diagnose the problem more easily.

Regards,
Narayan

ayeomans

I have the same problem.

I am running Windows Vista Business, and Firefox 3.5.7

After starting the sahi proxy and configuring the Firefox browser, I cannot open the sahi controller window, CTL + ALT double click gives no result.

DaveT

I am having the same problem.

narayan

Having a look at this folks ...

Venky

Hi,

Mean while, Try editing the os.properties file located at <sahi-base-path>/config directory,

Insert the below line,
Windows\ Vista=xp
after the line
Windows\ 2003=xp

and restart the sahi proxy.

We are still figuring out, what is causing this problem. You can expect a fix for this in the coming release.

Thanks,
Venky.

ajay

Hi
I tried doing to changes to os.properties file
the output changed to
C:\Users\document\Documents\Downloads\sahi_20091130\sahi\bin>sahi.bat

---

SAHI_HOME: ..
SAHI_USERDATA_DIR: ..\userdata
SAHI_EXT_CLASS_PATH:

---

Sahi properties file = C:\Users\document\Documents\Downloads\sahi_20091130\sahi\
config\sahi.properties
Sahi user properties file = C:\Users\document\Documents\Downloads\sahi_20091130\
sahi\userdata\config\userdata.properties
>>>> Sahi started. Listening on port: 9999
>>>> Configure your browser to use this server and port as its proxy
>>>> Browse any page and CTRL-ALT-DblClick on the page to bring up the Sahi Controller
Sahi OS properties file = C:\Users\document\Documents\Downloads\sahi_20091130\sahi\config\os.properties
keytool command may not be correct: Cannot run program "keytool": CreateProcess error=2, The system cannot find the file specified

Also, could not double click with Cntl+Alt to launch the Sahi Controller. however used <server>:9999 to get to the site launcher. Subsequently entered the site under test address, (also on local host). this launched the Sahi Controller but the info tab contains no info about any of the items. Browser, Operating System, and Java. It containse v3 for Sahi -> Version.

thanks,

ajay.

narayan

Hi Ajay and others,

The error and nullpointer do not affect functionality of Sahi. That part of the code is primarily for diagnostics which are displayed on the info tab of Controller.

You should have a look at this link, if your controller is not showing up: Help! The Sahi Controller does not come up

Regards,
Narayan

ayeomans

Still no joy.

I start Sahi via the start_sahi batch file, it results in the same text originally reported by sahitya.16. I didn't bother changing my properties file as Narayan said that shouldn't matter. I then started Internet Explorer (version 8) and set up the proxies as described in the instructions.

Alt-dbl click didn't bring up the sahi controller, so instead I wrote in the address localhost and 9000 in the web browser, and was prompted to enter a site address. I chose the address of a local newspaper. Both the sahi controller and the website come up. So far so good.

As Ajay reports above, no information at all under the "Info" tab except that I am running Sahi V3.

I enter a script name and press "Record". There is no visible change to the controller window. I go to the IE window, surf around a little, click on links, etc. But no script turns up in the sahi controller window. I try normal clicks, ctrl-click (opens new tab in browser) and even links that open new browser windows. Nothing happens in the Sahi controller window that I can see.

In the end I press the "Stop" button for the macro recording, and then a popup appears with the title "Message from webpage", a yellow triangle containing an exclamation mark and the text "[object Error]". After clicking on "OK" there is still appears to be nothing happening in the Sahi controller window.

Regards,

Alan

narayan

Hi Alan,

Are you accessing your server using localhost? Use the server name instead. As said in my previous post, please have a look at the specified URL. Also try on firefox if possible.

Of course, correct me if my localhost assumption is incorrect.

The diagnostics is independent of Sahi's functionality. Please do not worry about the info tab or the diagnostics messages.

Regards,
Narayan

ayeomans

Works now. Discovered that most of my problems seem to be related to the fact that I want to use sahi on an https test site.

First I noticed Sahi now works when I try a normal http address. But not for https.

Then I read through the help that you have for https and SSL sites. After setting the SSL proxy in Firefox, creating the sahi_example_com file that was missing, navigating to the SSLmanager and adding exceptions for sahi_example_com then I could access regular https sites.

I have to create an exception file for each https site we want to test, but the instructions for that work fine.

newguy

Does Sahi work on Windows 7? I got the same problem when I was testing it on Windows 7. Maybe it was another exception but I couldn't figure out how to get it work on Windows 7.

narayan

Newguy,

Sahi works on Windows 7. There was a problem in the diagnostics part which failed for OSes that were not specified in os.properties. The diagnostics does not affect Sahi's regular use.

This has been fixed and should be available in the coming release.

Regards,
Narayan