Examples of org.w3c.jigsaw.http.HTTPException

org.w3c.jigsaw.http.HTTPException
All entities should throw an HTTPException when encoutering some problems. This kind of exception is the one that gets normally caught by clients, and result in sending back HTTP error messages to the client.

        sb.append (")") ;
    }
      } catch (MalformedURLException e) {
    Reply error = request.makeReply(HTTP.BAD_REQUEST) ;
    error.setContent ("You are requesting an invalid URL.") ;
    throw new HTTPException (error) ;
      }


  }
  sb.append (")") ;
  return makePICSReply (request, sb) ;

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  try {
      d.parse () ;
  } catch (URLDecoderException e) {
      Reply error = request.makeReply(HTTP.BAD_REQUEST) ;
      error.setContent("Invalid request:unable to decode form data.");
      throw new HTTPException (error) ;
  } catch (IOException e) {
      Reply error = request.makeReply(HTTP.BAD_REQUEST) ;
      error.setContent("Invalid request: unable to read form data.");
      throw new HTTPException (error) ;
  }
  return handle (request, d) ;
    }

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    dec.parse () ;
      } catch (URLDecoderException e) {
    Reply error = request.makeReply(HTTP.BAD_REQUEST) ;
    error.setContent("Invalid request: unable to decode "+
         "form data.") ;
    throw new HTTPException (error) ;
      } catch (IOException ex) {
    Reply error = request.makeReply(HTTP.BAD_REQUEST) ;
    error.setContent("Invalid request: unable to read form data.");
    throw new ClientException(request.getClient(), ex) ;
      }

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      return acknowledgeExtension(request, reply);
  }


  Reply error = request.makeReply(HTTP.NOT_IMPLEMENTED) ;
  error.setContent("Method "+method+" not implemented.") ;
  throw new HTTPException (error) ;
    }

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      throws ProtocolException, ResourceException
    {
  String method = request.getMethod() ;
  Reply error   = request.makeReply(HTTP.NOT_IMPLEMENTED) ;
  error.setContent("Method "+method+" not implemented.") ;
  throw new HTTPException (error) ;
    }

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  String      method       = mmethod.substring(2);


  if ((extl == null) && (cextl == null)) {
      Reply error   = request.makeReply(HTTP.NOT_EXTENDED) ;
      error.setContent("Mandatory extension expected.");
      throw new HTTPException(error);
  } 


  int nb_extensions = 0;


  if (extl != null) {
      exts          = extl.getHttpExts();
      int len       = exts.length;
      nb_extensions += len;
      for (int i=0 ; i < len ; i++) {
    if (! supportedExtension(exts[i].getName(), method, this))
        notsupported.addElement(exts[i].getName());
      }
  }


  if (cextl != null) {
      cexts         = cextl.getHttpExts();
      int len       = cexts.length;
      nb_extensions += len;
      for (int i=0 ; i < cexts.length ; i++) {
    if (! supportedExtension(cexts[i].getName(), method, this))
        notsupported.addElement(cexts[i].getName());
      }
  }
  
  if (nb_extensions == 0) {
      Reply error   = request.makeReply(HTTP.NOT_EXTENDED) ;
      error.setContent("Mandatory extension expected.");
      throw new HTTPException(error);
  }
    
  int len = -1;
  if ((len = notsupported.size()) > 0) {
      Reply error   = request.makeReply(HTTP.NOT_EXTENDED) ;
      HtmlGenerator content = new HtmlGenerator("Error");
      content.append("<h1>Mandatory extension(s) not supported:",
         "</h1><p>\n");
      content.append("<ul>\n");
      for (int i = 0; i < len; i++)
    content.append("<li> "+(String)notsupported.elementAt(i)+"\n");
      content.append("</ul>\n");
      error.setStream(content);
      throw new HTTPException(error);
  }
    }

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  } else if ( params.hasItem ("signed") ) {
      format = LabelBureauInterface.FMT_SIGNED ;
  } else {
      Reply error = request.makeReply(HTTP.BAD_REQUEST) ;
      error.setContent ("Invalid label format: "+format) ;
      throw new HTTPException (error) ;
  }
  // Get labels for each service, building out the ret hashtable
  StringBuffer sb = new StringBuffer(128) ;
  Enumeration  e  = services.keys() ;
  sb.append ("("+PICS.PICS_PROTOCOL_ID) ;

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  }
  HtmlGenerator g = new HtmlGenerator("Unauthorized");
  g.append ("<h1>Unauthorized access</h1>"
      + "<p>You are denied access to this resource.");
  e.setStream(g);
  throw new HTTPException (e);
    }

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  if ( location == null ) {
      Reply error = request.makeReply(HTTP.INTERNAL_SERVER_ERROR) ;
      error.setContent("The target RelocateResource doesn't define the"
           + " relocation location. The server is "
           + " misconfigured.") ;
      throw new HTTPException(error) ;
  } else {
      Reply  reply = null;
      URL    loc      = null;
      if (checkUse302()) {
    reply = request.makeReply(HTTP.FOUND) ;

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      error.setContent("<html><head><title>Server Error</title>"+
           "</head><body><h1>Server misconfigured</h1>"+
           "<p>The resource <b>"+getIdentifier()+"</b>"+
           "has an invalid target attribute : <p><b>"+
           getTarget()+"</b></body></html>");      
      throw new HTTPException (error);
  }
  return server.perform(request);
    }

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