Develop Reference

Build DB connection string from environment variables

I'm using the Play Framework (Java) and am not able to figure out how to use environment variables in my configuration file for building the database connection string. While I'm able to use environment variables like this (for user name and password):
default.username = ${?FU_MAIN_DB_USERNAME}
default.password = ${?FU_MAIN_DB_PASSWORD}
I'm not able to make it work in the url string. Perhaps this is a simple case of string processing in Scala that I'm missing, but since I'm working in Java, I could use some help.
So far, I have tried the url string in the following formats and failed:
Tried to add a $ to variable name to perform interpolation:
default.url = "jdbc:postgresql://$${?FU_MAIN_DB_HOST}:$${?FU_MAIN_DB_PORT}/$${?FU_MAIN_DB_NAME}";
But this doesn't substitute. Rather, it picks the string as such.
default.url = "jdbc:postgresql://${?FU_MAIN_DB_HOST}:${?FU_MAIN_DB_PORT}/${?FU_MAIN_DB_NAME}";
This too inserts the '$' and all verbatim. Then I thought maybe something like PHP-style will work
default.url = "jdbc:postgresql://${${?FU_MAIN_DB_HOST}}:${${?FU_MAIN_DB_PORT}}/${${?FU_MAIN_DB_NAME}}";
But no.
I also tried doing stuff like "jdbc:postgresql://".concat(${?FU_MAIN_DB_HOST}) ... but this also inserts '.concat' verbatim.
Finally, I tried concatenation using the '+' operator, but I'm told (by my IDE) that symbols like +: etc. are not allowed in the application.conf file.
How then, in God's name, am I supposed to do that?!

The double quotes turn off interpolation. But you need to do that for the : and the //.
Try
default.url = "jdbc:postgresql://"${?FU_MAIN_DB_HOST}":"${?FU_MAIN_DB_PORT}/${?FU_MAIN_DB_NAME}
Maybe you are better off to set the whole thing in one big environment variable instead.

Selenium via java - sendKeys doesn't send specific chars to input

I'm having a strange condition where i'm trying to type into input by using sendKeys , the reuslt is that specific chars doesn't seem to be implemented in the input at all.
What i'm trying to do:
webDriver.findElement(By.id("additionalInfo(token_autocompleteSelectInputId)")).sendKeys("(test)");
the result is that input field is now : test) and the missing char is '(' .
If i will try
webDriver.findElement(By.id("additionalInfo(token_autocompleteSelectInputId)")).sendKeys("((((((((((")
the result is that the input is empty.
Anyone ever faced this issue before? it is happening on a very specific input in the app, couldn't find anything related to it in the html code.
Thanks in advance.
Edit: I can manually type ( in the input field.

Maybe it's a special character for selenium, have you tried using escape characters? Something like backslash before it if it allows it.
Edit: I found some issue report on github from last year, not sure if they agreed to not fix it. Executing a script to type "(" seems to be an alternative.
Source: https://github.com/seleniumhq/selenium/issues/674

try declaring the key as a string first
String keyToSend = "(test)";
webDriver.findElement(By.id("additionalInfo(token_autocompleteSelectInputId)")).sendKeys(keyToSend);

In this case you should try using JavascriptExecutor as below :-
WebElement el = webDriver.findElement(By.id("additionalInfo(token_autocompleteSelectInputId)"));
((JavascriptExecutor)webDriver).executeScript("arguments[0].value = arguments[1]", el, "(test)");
Hope it helps..:)

Why doesn't this Java regex compile?

I am trying to extract the pass number from strings of any of the following formats:
PassID_132
PassID_64
Pass_298
Pass_16
For this, I constructed the following regex:
Pass[I]?[D]?_([\d]{2,3})
-and tested it in Eclipse's search dialog. It worked fine.
However, when I use it in code, it doesn't match anything. Here's my code snippet:
String idString = filename.replaceAll("Pass[I]?[D]?_([\\d]{2,3})", "$1");
int result = Integer.parseInt(idString);
I also tried
java.util.regex.Pattern.compile("Pass[I]?[D]?_([\\d]{2,3})")
in the Expressions window while debugging, but that says "", whereas
java.util.regex.Pattern.compile("Pass[I]?[D]?_([0-9]{2,3})")
compiled, but didn't match anything. What could be the problem?

Instead of Pass[I]?[D]?_([\d]{2,3}) try this:
Pass(?:I)?(?:D)?_([\d]{2,3})

There's nothing invalid with your tegex, but it sucks. You don't need character classes around single character terms. Try this:
"Pass(?:ID)?_(\\d{2,3})"

get all values using get paremeters in java

I'm passing the some values url from flex to java example:
URL format:
../mahesh/initUser.do?method=fwdAccDetails&securityId=mUuB3/p/ky5JhZPY5T8Znf01YCcIarIalQiGEXPMMsOkWDX+KtT4fx2gMML+uup8
After I'm tiring to get "securityId" values in java like
request.getParameter("securityId")
But I'm getting following values only
mUuB3/p/ky5JhZPY5T8Znf01YCcIarIalQiGEXPMMsOkWDX KtT4fx2gMML uup8
symbol getting empty space in java side..
Here is my Flex code:
navigateToURL(new URLRequest('../mahesh/initUser.do?method=fwdAccDetails&securityId='+value+'),'_s‌​elf');
I didn't get full values.. any one can help me how I will get correct values in Java..

You should use the encodeURIComponent()-Function to properly encode your securityId.
value = encodeURIComponent(value);
navigateToURL(new URLRequest('../mahesh/initUser.do?method=fwdAccDetails&securityId='+value+'),'_s‌​elf');
That way your String will be correct on the Java side.
If you want to read more about proper escaping, have a look at When are you supposed to use escape instead of encodeURI / encodeURIComponent? (Same arguments apply for Flex and JavaScript).

i just resolve my issue for following code in a javURLDecoder.decode(param1AfterEncoding.replace("+", "%2B"), "UTF-8").replace("%2B", "+")
Now its working fine only.. i dint other special character will work fine.. i will check it later..

Velocity - How to avoid ParseErrorException when using jQuery?

I'm trying to add a jQuery post to some JavaScript on a web page. The entire page is built up of several Velocity templates. Everything has been fine until I've tried to add the jQuery post, now I get:
org.apache.velocity.exception.ParseErrorException: Encountered "," at line 282, column 24 of /WEB-INF/velocity/www/comments.vm
Was expecting one of:
"(" ...
<RPAREN> ...
<ESCAPE_DIRECTIVE> ...
~~~snip~~~
Line 282 is $.post(... and column 24 appears to be the first "," character. Initially I had the JSON on this line, but I moved it up (to the var myJSONObject ... line)as I thought the error related to invalid JSON (tabs at the start of the line gave a misleading column number).
var myJSONObject = {"body": "", "action": "postcomment", "submitted": "true", "ajax": "true"};
myJSONObject.body = $("body").val();
$.post("$!{articleurl}", myJSONObject, function(result){
btn.textContent='Comment sent successfully.';
});
Minor Update
I changed the following lines:
var url = "$articleurl";
$.post(url, myJSONObject, function(result){
~~~snip~~~
The parse exception still focuses on the first ",". I'm assuming the issue is that Velocity thinks it should be able to resolve $.post - when in fact, it's jQuery. I've used jQuery in other Velocity VM templates without any problem. Is there a way to get Velocity to ignore certain lines / statements when parsing?
Update 2
I found this link about escaping references in Velocity, but it does not resolve my issue. Adding a "\" before $.post gives me the exact same error, but the column is one extra, because of the character added at the start of the line.

You can wrap your javascript with #[[ ... ]]# which tells Velocity to not parse the enclosed block (new in Velocity 1.7)
#[[
<script>
...
</script>
]]#

Ok, there appears to be two solutions for this:
First, with jQuery we can just avoid using the global alias $ and instead use the jQuery object directly:
jQuery.post(url, myJSONObject, function(result){
~~~snip~~~
In my case, the above works great. But I suspect in other scenarios (non-jQuery) this may not be possible. In which case, we can 'hide' our character within a valid Velocity reference like this:
#set( $D = '$' )
${D}
Source: http://velocity.apache.org/engine/devel/user-guide.html#escapinginvalidvtlreferences
I'd still like to know why the backslash escape didn't work, but the above will at least get me moving again. :)

I think this is a bug in version 1.6.x, because it works fine in 1.7(If it did not, please tell me, I test it many times..), according to the reference, the $ takes effect only when it is followed by a-zA-Z. I want to try do debug what happened really, but the translation code is generated by Java CC tool, it is too hard to recognize the logic...

you must create a js file with your javascript code
and import your js file into your vm code

I couldn't get it to work with any of the other fixes like escaping "$" in velocity unfortunately. I got it working by loading an external js-file with the jQuery instead of writing jQuery directly in velocity. Worked out for me at least, hope it helps someone :)
/björn