i need to access a configuration file with some properties from a class inside a webapp.
The webapp consist of a servlet that uses another class.
In that class i want to access a configuration file.
Which is the best way?
3
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are these properties in a .properties file?Giovanni– Giovanni2011-11-24 11:54:52 +00:00Commented Nov 24, 2011 at 11:54
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1techblog.bozho.net/?p=483Bozho– Bozho2011-11-24 11:55:45 +00:00Commented Nov 24, 2011 at 11:55
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possible duplicate of where to place properties files in a jsp servlet web applicationBalusC– BalusC2011-11-24 12:02:56 +00:00Commented Nov 24, 2011 at 12:02
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2 Answers
Use Properties file and read it from ContextListener and store it in some application wide accessible map it properties are not too many.
Also you can use web-param
Comments
you can put a properties file under your WEB-INF/classes directory. in that way it wil be visible on the classpath, then in your java class you can use :
InputStream is = Thread.currentThread().getContextClassLoader().getResourceAsStream("your_file.properties");
3 Comments
jglatre
Fine for a quick & dirty "hello world", what about dependency injection and testability?
epoch
@jglatre, please elaborate with example, i think this is perfectly fine for normal use.
jglatre
It depends on your quality standards. I'd rather declare a
public void setProperties(Properties props) method, wich lets me use the component in many different environments, for instance: in a JUnit test (I don't have to bother about external files, just create new Properties() on the fly), or in a Spring context (I can easily inject values in a XML beans file). Furthermore I can easily swap from one config file name to another, or even change file format, without affecting my component.