Jsp+java+properties+fileinputstream file read/write, JSP page read properties file

String Realpath = Request.getrealpath ("web-inf/classes/com/properties/devicetype.properties");

The above is the most correct way to get the path, so the properties can be placed under a COM package, or in the SRC directory.

Properties props =NewProperties (); ArrayList Al=NewArrayList (); Try{InputStream in=NewBufferedinputstream (NewFileInputStream (Realpath));                Props.load (in); Enumeration en=Props.propertynames ();  while(En.hasmoreelements ()) {String key=(String) en.nextelement (); String Property=Props.getproperty (key);                        Al.add (property); //System.out.println (key+property);                    }            } Catch(Exception e) {e.printstacktrace (); } 

The above code can successfully read the key and value values of the properties configuration file from the specified directory and do the related processing according to the relevant business.

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Jsp+java+properties+fileinputstream file read/write, JSP page read properties file