使用'。' 使用-D将参数传递给java二进制文件时不能很好地解析

Question

I am using Jenkins CI to run java from execute shell build step :

java -jar -Dadmin.hostname=$hostname -Dschema_name=$schema myapp.jar

I have noticed that although both parameters hostname and schema are defined well and has non empty values on runtime, Jenkins parses it the following way:

java -jar -Dadmin.hostname= -Dschema_name=MYDB myapp.jar

meaning admin.hostname value doesn't get parsed.

I have tracked the problem and noticed that when i dont use . in the parameter name everything get parsed okay.

I am wondering if this is a limitation of Java command line or a bug in Jenkins perhaps. (I am using RHEL64)

Thanks

EDIT: I think this is bug with Parametrized build jenkins plugin as using . in other builds works fine.

Answer 1

Perhaps the problem is that environment variables on UNIX are case sensitive

$ echo $hostname

$ echo $HOSTNAME
myhostname

There shouldn't be any problem using . because may built in properties uses them.

BTW: Just because a property is set to blank doesn't mean its not set.

System.out.println("not.set=" + System.getProperty("not.set"));
System.out.println("admin.hostname='" + System.getProperty("admin.hostname")+"'");

when run with -Dadmin.hostname= prints

not.set=null
admin.hostname=''