java - Define variable in Spring config file to have access to external folder with images -

instead of having path variable (i.e. accessing images) in different parts of java spring controllers there way define variable in config file , use through such variable:

config file: string imagefolder = "d:\\projects\\project_name\\images\\";  spring controller: file outputfile = new file(imagefolder + img_name + "." + img_ext); imageio.write(image, img_ext, outputfile); 

thaks in advance.

own solution (added in bottom):

web.xml:

<context-param>     <param-name>imagefolder</param-name>     <param-value>d:\projects\project_name\src\main\webapp\resource\images\</param-value> </context-param> 

controller:

@restcontroller public class namecontroller {          @resource     private servletcontext servletcontext;      @requestmapping(value = "/getimage/{img_name:.+}")     public byte[] getimage(@pathvariable string img_name) throws internalerror  {     byte[] data;       try {          string imagefolder = servletcontext.getinitparameter("imagefolder");           string realpath = imagefolder + img_name;          path path = paths.get(realpath);          data = files.readallbytes(path);      }catch (exception e){          data = null;      }     return data;    } }