Java Question
JVM System Property - how to treat as string literal
I have a Java application that uses -D system properties that I create. I'm having issues getting one of them to be translated correctly.
In my test environment (localhost) on my local computer, I'm running Windows using IntelliJ Idea IDE and I enter the -D system properties through the IDE like so:
-Dproperty={\"prop1\":\"val1\",\"prop2\":\"val2\"}
I escape the double quotes because they need to be apart of the string literal. The above property works and the entire value including the curly braces is stored as a string literal.
The issue occurs when we deploy this application to our Linux cloud environment. I think the difference in architecture is causing the system property to not be read in correctly. In bash, I find the process ID of all the -D system properties and do a
ps -fwwp [processId]-Dproperty=prop1:val1
-Dproperty=prop2:val2
-Dproperty=prop3:val3
etc...
This is causing the part of my application that uses this property to fail. I've tried doing a bunch of escaping methods and none of them are working.
How can I escape this system property in such a way that the value is treated as the string literal
{"prop1":"val1","prop2":"val2"}
Answer
Bash requires the curly braces to be escaped, as in:
-Dproperty=\{\"prop1\":\"val1\",\"prop2\":\"val2\"\}
The other option is to try surrounding the entire string in single quotes. Bash won't do any expansions inside single quotes:
-Dproperty='{"prop1":"val1","prop2":"val2"}'
I don't know which option will be easier to make compatible with your windows environment.
Source (Stackoverflow)