src/dolda/jsvc/util/Redirect.java

   1 package dolda.jsvc.util;
   2
   3 import dolda.jsvc.*;
   4 import java.net.*;
   5
   6 public class Redirect extends RequestRestart {
   7     private URL abs;
   8     private String rel;
   9
  10     protected Redirect() {
  11     }
  12
  13     public Redirect(URL to) {
  14         this.abs = to;
  15         this.rel = null;
  16     }
  17
  18     public Redirect(String to) {
  19         this.abs = null;
  20         this.rel = to;
  21     }
  22
  23     public void respond(Request req) {
  24         req.status(303);
  25         req.outheaders().put("Location", target(req).toString());
  26     }
  27
  28     protected URL target(Request req) {
  29         if(this.abs != null) {
  30             return(this.abs);
  31         } else {
  32             try {
  33                 return(new URL(req.url(), this.rel));
  34             } catch(MalformedURLException e) {
  35                 throw(new RuntimeException("Bad relative URL: + " + this.rel, e));
  36             }
  37         }
  38     }
  39 }