Examples of com.oreilly.servlet.MultipartResponse

com.oreilly.servlet.MultipartResponse
A utility class to generate multipart/x-mixed-replace responses, the kind of responses that implement server push. Note that Microsoft Internet Explorer does not understand this sort of response.
To use this class, first construct a new MultipartResponse passing to its constructor the servlet's response parameter. MultipartResponse uses the response object to fetch the servlet's output stream and to set the response's content type.
Then, for each page of content, begin by calling startResponse() passing in the content type for that page. Send the content for the page by writing to the output stream as usual. A call to endResponse() ends the page and flushes the content so the client can see it. At this point a sleep() or other delay can be added until the next page is ready for sending.
The call to endResponse() is optional. The startResponse() method knows whether the last response has been ended, and ends it itself if necessary. However, it's wise to call endResponse() if there's to be a delay between the time one response ends and the next begins. It lets the client display the latest response during the time it waits for the next one.
Finally, after each response page has been sent, a call to the finish() method finishes the multipart response and sends a code telling the client there will be no more responses.
For example:
```
 MultipartResponse multi = new MultipartResponse(res);   multi.startResponse("text/plain"); out.println("On your mark"); multi.endResponse();   try { Thread.sleep(1000); } catch (InterruptedException e) { }   multi.startResponse("text/plain"); out.println("Get set"); multi.endResponse();   try { Thread.sleep(1000); } catch (InterruptedException e) { }   multi.startResponse("image/gif"); ServletUtils.returnFile(req.getRealPath("/images/go.gif"), out);   multi.finish(); 
```
@see ServletUtils @author Jason Hunter, Copyright © 1998 @version 1.0, 98/09/18

                    // Set the filename, is used when the file will be saved (problem with mozilla)
                    response.addHeader( "Content-Disposition",
                                        "attachment; filename=" + shortFileName);
                
                    // Constructing the multi part response to the client
                    MultipartResponse multipartresponse = new MultipartResponse(response);
                
                    // Is the convert type HTML?
                    if ( ( multipartrequest.getParameter( "converttype" ).equals(
                               "swriter: HTML (StarWriter)" ) )
                         || ( multipartrequest.getParameter( "converttype" ).equals(
                                  "scalc: HTML (StarCalc)" ) ) ) {
                        // Setting the content type of the response being sent to the client
                        // to text
                        multipartresponse.startResponse( "text/html" );
                    } else {
                        // Setting the content type of the response being sent to the client
                        // to application/octet-stream so that file will open a dialog box
                        // at the client in order to save the converted file
                        multipartresponse.startResponse( "application/octet-stream" );
                    }
                    
                    // Pushing the converted file to the client
                    ServletUtils.returnFile( stringConvertedFile,
                                             response.getOutputStream() );
                    
                    // Finishing the multi part response
                    multipartresponse.finish();
                    
                    // clean up the working directory
                    cleanupFile = new File(stringConvertedFile);
                    if ( cleanupFile.exists() )
                        cleanupFile.delete();

View Full Code Here

        stringWorkingDirectory + stringFilename,
        multipartrequest.getParameter( "converttype" ),
        multipartrequest.getParameter( "extension" ) );


        // Constructing the multi part response to the client
        MultipartResponse multipartresponse = new MultipartResponse( 
        response );
        
        // Is the convert type HTML?
        if ( ( multipartrequest.getParameter( "converttype" ).equals(
        "swriter: HTML (StarWriter)" ) )
        || ( multipartrequest.getParameter( "converttype" ).equals(
        "scalc: HTML (StarCalc)" ) ) ) {
          // Setting the content type of the response being sent to the client
          // to text
          multipartresponse.startResponse( "text/html" );
        } else {
          // Setting the content type of the response being sent to the client
          // to application/octet-stream so that file will open a dialog box
          // at the client in order to save the converted file
          multipartresponse.startResponse( "application/octet-stream" );
        }
        
        // Pushing the converted file to the client
        ServletUtils.returnFile( stringConvertedFile,
        response.getOutputStream() );


        // Finishing the multi part response
        multipartresponse.finish();
      }
    }
    catch (Exception exception) {
      System.err.println( exception.toString() );
    }

View Full Code Here

                    // Set the filename, is used when the file will be saved (problem with mozilla)
                    response.addHeader( "Content-Disposition",
                                        "attachment; filename=" + shortFileName);
                
                    // Constructing the multi part response to the client
                    MultipartResponse multipartresponse = new MultipartResponse(response);
                
                    // Is the convert type HTML?
                    if ( ( multipartrequest.getParameter( "converttype" ).equals(
                               "swriter: HTML (StarWriter)" ) )
                         || ( multipartrequest.getParameter( "converttype" ).equals(
                                  "scalc: HTML (StarCalc)" ) ) ) {
                        // Setting the content type of the response being sent to the client
                        // to text
                        multipartresponse.startResponse( "text/html" );
                    } else {
                        // Setting the content type of the response being sent to the client
                        // to application/octet-stream so that file will open a dialog box
                        // at the client in order to save the converted file
                        multipartresponse.startResponse( "application/octet-stream" );
                    }
                    
                    // Pushing the converted file to the client
                    ServletUtils.returnFile( stringConvertedFile,
                                             response.getOutputStream() );
                    
                    // Finishing the multi part response
                    multipartresponse.finish();
                    
                    // clean up the working directory
                    cleanupFile = new File(stringConvertedFile);
                    if ( cleanupFile.exists() )
                        cleanupFile.delete();

View Full Code Here

                    // Set the filename, is used when the file will be saved (problem with mozilla)
                    response.addHeader( "Content-Disposition",
                                        "attachment; filename=" + shortFileName);
                
                    // Constructing the multi part response to the client
                    MultipartResponse multipartresponse = new MultipartResponse(response);
                
                    // Is the convert type HTML?
                    if ( ( multipartrequest.getParameter( "converttype" ).equals(
                               "swriter: HTML (StarWriter)" ) )
                         || ( multipartrequest.getParameter( "converttype" ).equals(
                                  "scalc: HTML (StarCalc)" ) ) ) {
                        // Setting the content type of the response being sent to the client
                        // to text
                        multipartresponse.startResponse( "text/html" );
                    } else {
                        // Setting the content type of the response being sent to the client
                        // to application/octet-stream so that file will open a dialog box
                        // at the client in order to save the converted file
                        multipartresponse.startResponse( "application/octet-stream" );
                    }
                    
                    // Pushing the converted file to the client
                    ServletUtils.returnFile( stringConvertedFile,
                                             response.getOutputStream() );
                    
                    // Finishing the multi part response
                    multipartresponse.finish();
                    
                    // clean up the working directory
                    cleanupFile = new File(stringConvertedFile);
                    if ( cleanupFile.exists() )
                        cleanupFile.delete();

View Full Code Here

        stringWorkingDirectory + stringFilename,
        multipartrequest.getParameter( "converttype" ),
        multipartrequest.getParameter( "extension" ) );


        // Constructing the multi part response to the client
        MultipartResponse multipartresponse = new MultipartResponse( 
        response );
        
        // Is the convert type HTML?
        if ( ( multipartrequest.getParameter( "converttype" ).equals(
        "swriter: HTML (StarWriter)" ) )
        || ( multipartrequest.getParameter( "converttype" ).equals(
        "scalc: HTML (StarCalc)" ) ) ) {
          // Setting the content type of the response being sent to the client
          // to text
          multipartresponse.startResponse( "text/html" );
        } else {
          // Setting the content type of the response being sent to the client
          // to application/octet-stream so that file will open a dialog box
          // at the client in order to save the converted file
          multipartresponse.startResponse( "application/octet-stream" );
        }
        
        // Pushing the converted file to the client
        ServletUtils.returnFile( stringConvertedFile,
        response.getOutputStream() );


        // Finishing the multi part response
        multipartresponse.finish();
      }
    }
    catch (Exception exception) {
      System.err.println( exception.toString() );
    }

View Full Code Here

                    // Set the filename, is used when the file will be saved (problem with mozilla)
                    response.addHeader( "Content-Disposition",
                                        "attachment; filename=" + shortFileName);
                
                    // Constructing the multi part response to the client
                    MultipartResponse multipartresponse = new MultipartResponse(response);
                
                    // Is the convert type HTML?
                    if ( ( multipartrequest.getParameter( "converttype" ).equals(
                               "swriter: HTML (StarWriter)" ) )
                         || ( multipartrequest.getParameter( "converttype" ).equals(
                                  "scalc: HTML (StarCalc)" ) ) ) {
                        // Setting the content type of the response being sent to the client
                        // to text
                        multipartresponse.startResponse( "text/html" );
                    } else {
                        // Setting the content type of the response being sent to the client
                        // to application/octet-stream so that file will open a dialog box
                        // at the client in order to save the converted file
                        multipartresponse.startResponse( "application/octet-stream" );
                    }
                    
                    // Pushing the converted file to the client
                    ServletUtils.returnFile( stringConvertedFile,
                                             response.getOutputStream() );
                    
                    // Finishing the multi part response
                    multipartresponse.finish();
                    
                    // clean up the working directory
                    cleanupFile = new File(stringConvertedFile);
                    if ( cleanupFile.exists() )
                        cleanupFile.delete();

View Full Code Here

        stringWorkingDirectory + stringFilename,
        multipartrequest.getParameter( "converttype" ),
        multipartrequest.getParameter( "extension" ) );


        // Constructing the multi part response to the client
        MultipartResponse multipartresponse = new MultipartResponse( 
        response );
        
        // Is the convert type HTML?
        if ( ( multipartrequest.getParameter( "converttype" ).equals(
        "swriter: HTML (StarWriter)" ) )
        || ( multipartrequest.getParameter( "converttype" ).equals(
        "scalc: HTML (StarCalc)" ) ) ) {
          // Setting the content type of the response being sent to the client
          // to text
          multipartresponse.startResponse( "text/html" );
        } else {
          // Setting the content type of the response being sent to the client
          // to application/octet-stream so that file will open a dialog box
          // at the client in order to save the converted file
          multipartresponse.startResponse( "application/octet-stream" );
        }
        
        // Pushing the converted file to the client
        ServletUtils.returnFile( stringConvertedFile,
        response.getOutputStream() );


        // Finishing the multi part response
        multipartresponse.finish();
      }
    }
    catch (Exception exception) {
      System.err.println( exception.toString() );
    }

View Full Code Here

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