JavaBean find the file under the project here is \web-inf\classes\ properties file below

String baseinfo= "/com/bean/dbhelp.properties";
Filename=getclass (). getClassLoader (). GetResource ("/"). GetPath ();
Filename=filename.substring (1,filename.length ()-1);
The above is read to the Post folder under the \web-inf\classes\
Filename=urldecoder.decode (filename, "utf-8");

The above one is to transcode the spaces in the path or the format of the meeting%20 appears

Filename=filename+baseinfo;

Above is the stitching string
File File=new file (filename);
if (File.exists ())
{
SYSTEM.OUT.PRINTLN ("presence");
}
SYSTEM.OUT.PRINTLN (filename);

The next above should be understood by everyone!

Very basic, very simple, to stimulate, please if you have a good, give me comments, I also good learning

JavaBean find the file under the project here is \web-inf\classes\ properties file below