How to get and display image file through servlet

If I've got a jpg file on the server..
How can I use servlet to return that image via the following calling method
/displayfile?filename=image.jpg
the image.jpg in the server will return
I know that I need to set the content type to image/jpeg
after that, how can I return the image file to browser?

- Get the "file" Parameter from the URL QueryString
- check if the File specified exists on your filesystem
- read in the jpg from the file (best would be binary)
- set the right Mime Type (as you already wrote)
- write the filecontent to the ServletOutput as you would do with any other content
- that's it.

Similar Messages

How can I upload a (image) file through an applet ?

How can I upload a (image) file through an applet ?

have a look at http://www.haller-systemservice.net/jupload/
i'm using Apache Jakarta HTTPClient to create a new HTTP connection to the webserver and sending a new POST request, which holds the image file. (So it's RFC1867 conform)
there is also an open source implementation of such an applet on sourceforge. it's also called JUpload, but i think it's not maintained any more.

How to get and display current year

hi,
how to get and display current year
and need it to convert numeric format if it is orginally
in character format.

Hi,
chk this FM.
CALL FUNCTION 'GET_CURRENT_YEAR'
EXPORTING
    BUKRS         = '1000'     " Company Code
    DATE          = SY-DATUM   " Date to find fiscal year for
IMPORTING
    CURRM         = w_currm    " Current Fiscal Month
    CURRY         = w_curry    " Current Fiscal Year
    PREVM         = w_prevm    " Previous Fiscal Month
    PREVY         = w_prevy.   " Previous Fiscal Year
rgds
anver
if hlped pls mark points

How to get and read a file from META-INF directory

how to get and read a file from META-INF directory in a EJB project

Use this.getClass().getResourceAsStream("/META-INF/filename");This should work. Probably, you would need to set the Manifest Class-Path attribute.

Efficiency of decoding and displaying image files?

BRIEF SUMMARY
My question is this: can Flash Player download JPG and GIF
files from a server and rapidly open/decode them, ready for
display, efficiently and
entirely 'in memory'?
Would Flex be a good choice of language for developing a RIA
that needs to continually download lots of JPG and GIF images
on-the-fly from the server and render them on the screen? I *don't*
want my application to thrash the hard disc.
BACKGROUND
I am designing a 'rich' web app, and I'm investigating
whether Flex is the right tool for the job.
Although Flash's animation features are an obvious selling
point for implementing my user interface, I also need to do some
server-side rendering. What I want to do is perhaps a little
unorthodox: I will be generating lots of GIF and JPG files on the
fly and these will be streamed to the client (along with other
application data, e.g. in XML format) to update different parts of
the on-screen document. In need this to happen very quickly (in
some cases, creating the effect of animation).
It happens that JPGs and 16-colour GIFs will be, by far, the
most efficient formats for streaming the images, because of the
nature of the application. I could of course send the images in
some proprietary format, geared for my application, but presumably
decoding the images would be slow as I would have to implement this
myself in ActionScript, and so I would be limited by the speed of
Flex 'bytecode'. (I realise Flash is a lot more optimised than it
once was, but I am hoping to see a gain from using image formats
that Flash natively understands!)
Naturally the internet bandwidth should (in principle) be the
bottleneck. However, assuming I can get my image files to the
client on time, want I want to know is:
how efficient is Flash at loading such files?
Bearing in mind that I'm not just displaying the occasional
image -- I will be doing this continuously. Most of the images
won't be huge, but there will be several separate images per
second.
The image files will be a mixture of normal colour JPGs and
4-bit colour GIFs (LZW-compressed). I know that Flash natively
supports these formats, but depending on how Adobe have implemented
their LZW/Huffman decoding and so on, and how much overhead there
is in opening/processing downloaded image files before they are
ready to 'blit' to the screen, I imagine this could be pretty fast
or pretty slow!
If my client only has a modest PC, I don't want the JPG/GIF
decoding alone to be thrashing his CPU (or indeed the disc) before
I've even got started on 'Flashy' vector stuff.
I'm new to Flash, so are there any 'gotchas' I need to know
about?
E.g. Would it be fair to assume Flash Player will do the
decoding of the downloaded image entirely 'in memory' without
trying to do anything clever like caching the file to disc, or
calling any libraries which might slow down the whole process? It
would be no good at all if the images were first written to the
client's hard disc before being ready to display, for example.
Further, if I'm doing something a little out-of-the-ordinary,
and there is no 'guarantee' that images will be loaded quickly,
what I'm doing might be a bad idea if a later version of Flash
Player may (for example) suddenly start doing some disc access in
the process of opening a newly downloaded image. So, while I could
just 'try it and see', what I really need is some assurance that
what I'm doing is sensible and is likely to carry on working in
future.
Finally, I imagine JPG/GIF decoding could be something that
would vary from platform to platform (e.g. for the sake of
argument, Flash Player for Windows could use a highly-optimised
library, but other versions could be very inefficient).
This could be the 'make or break' of my application, so all
advice is welcome! :) Thanks in advance.

You need a servlet/jsf component to render the image in the response.
Look at this: http://www.irian.at/myfaces-sandbox/graphicImageDynamic.jsf

How to upload and display image using bsp application

hi
I just wants to know that
1- how to upload image from BSP page with attachment into sap server .?
2-how to display image in to BSP page(webpage).
thanks

Hello Gupta Prashant,
Just to upload and display an image, import image in MIME repository. Not only still images but also flash files can also be uploaded in the MIME repository. Once you import the image in it, use normal html code for image call;
<img src = "file.jpg/gif" width= height=>
Besides it, if your requirement is to store the image in the database and fetch it based on specified field-name, then you have to go for BLOBs i.e Binary Large Object, using this you can also store images, videos, pdfs, applications in the database.
MBLOB - Medium BLOBs store videos and pdfs,
LBLOB - Large BLOBs store movie files and applications.
You have got 2 ways to use it; some databases store BLOB objects into themselves and some store the path of the BLOB object maintained on the FTP server.
You can also implement it in ABAP;
read the following link and practice the tutorial;
[ Use of MIME Types|http://help.sap.com/saphelp_45b/helpdata/en/f1/b4a6c4df3911d18e080000e8a48612/content.htm]
also check this
[TYPES - LOB HANDLE|http://help.sap.com/abapdocu/en/ABAPTYPES_LOB_HANDLE.htm]
And looking at your question, in order to upload an image, you can make use of FILEUPLOAD tag provided by HTMLB.
Step 1: FILEUPLOAD provides a browse button to choose desired image file.
Step 2: Store that image in database using BLOBs.
Step 3: Retrieve the image using normal select query and display it on the screen.
Hope it helps you,
Zahack

How to play and stop flv files through NetStream in AIR Application

Hi,
In a folder I have 'n' number of flv file, which are DRM protected. when the user try to play those files for the first time through my AIR application, it will prompt for username and password and gets the license/voucher from the server and store it in AIR Runtime. so that from the next time onwords it won't prompt for username and password as because it already has license/voucher.
 My problem is assume there are 500 files, such that for each file the user has to enter his credentials[username and password]. which is a stupid thing. I want to avoid this process by implementing this process internally/programetically. By playing/accessing each file through netstream from the folder and setDRMAuthenticationCredentials for that file and stop the stream. Here I am able to play each file but I am failed to stop it. I mean to say I will get the license for all the flv files internally[while loading my AIR application], such that user should not be interrupted for his credentials for each file.He should play as if he is accessing/playing a non-DRM protected file. I will be very thank full if any one help me out in this.
public function init():void {
 connectStream();
 getLicenseForAllFiles();
 videoStream.addEventListener(DRMAuthenticateEvent.DRM_AUTHENTICATE, drmAuthenticateEventHandler);
 ppt_videoStream.addEventListener(DRMAuthenticateEvent.DRM_AUTHENTICATE, ppt_drmAuthenticateEventHandler);
 private function getFilesRecursive(rootFolderPath:String):void {
 //the current folder object
 var currentFolder:File = new File(rootFolderPath);
 //the current folder's file listing
 var files:Array = currentFolder.getDirectoryListing();
 //iterate and put files in the result and process the sub folders recursively
 for (var f = 0; f < files.length; f++) {
 if (files[f].isDirectory) {
 if (files[f].name !="." && files[f].name !="..") {
 //it's a directory
 getFilesRecursive(files[f].nativePath);
 } else {
 //it's a file
 fileList.push(files[f].nativePath);
 //Alert.show(""+files[0].nativePath);
 var fileName:String = files[f].name;
 if(fileName.indexOf("PPT_")!=-1){
 ppt_videoStream.play(files[f].nativePath);
 ppt_videoStream.pause();
 videoStream.play(files[f].nativePath);
 videoStream.pause();
 private function connectStream():void {
 videoConnection = new NetConnection();
 videoConnection.addEventListener(NetStatusEvent.NET_STATUS, netStatusHandler);
 videoConnection.connect(null);
 ppt_videoConnection = new NetConnection();
 ppt_videoConnection.addEventListener(NetStatusEvent.NET_STATUS, netStatusHandler);
 ppt_videoConnection.connect(null);
 videoStream = new NetStream(videoConnection);
 videoStream.addEventListener(NetStatusEvent.NET_STATUS, netStatusHandler);
 video.attachNetStream(videoStream);
 ppt_videoStream = new NetStream(ppt_videoConnection);
 ppt_videoStream.addEventListener(NetStatusEvent.NET_STATUS, netStatusHandler);
 ppt_video.attachNetStream(ppt_videoStream);
 private function netStatusHandler(event:NetStatusEvent):void {
 switch (event.info.code) {
 case "NetConnection.Connect.Success":
 //connectStream();
 break;
 case "NetStream.Play.StreamNotFound":
 trace("Unable to locate video: " + videoURL);
 break;
 private function drmAuthenticateEventHandler(event:DRMAuthenticateEvent):void {
 videoStream.setDRMAuthenticationCredentials("adobe", "adobe", "drm");
 private function ppt_drmAuthenticateEventHandler(event:DRMAuthenticateEvent):void {
 ppt_videoStream.setDRMAuthenticationCredentials("adobe", "adobe", "drm");
Thanks
Sudheer Puppala

Hi,
Please go through following links..this will help you:
http://lucamezzalira.com/2009/02/28/create-pdf-in-runtime-with-actionscript-3-alivepdf-zin c-or-air-flex-or-flash/
http://forums.adobe.com/thread/753959
http://blog.unthinkmedia.com/2008/09/05/exporting-pdfs-in-flex-using-alivepdf/
Thanks and Regards,
Vibhuti Gosavi | [email protected] | www.infocepts.com

How can I read a image file through URI?

I have a image file store in my computer's Image directory on drive E. I name the pathname as:
file:////MyComputerName/e:/image/
the image filename is MyImage.JPG
so I create a ImageIcon use:
String uri = "file:///MyComputerName/e:/image/";
String imagefilename = "MyImage.JPG";
ImageIcon ii = new ImageIcon( uri+imagefilename);
Image myimage = ii.getImage();but I can not get the image.
Does anyone know what's wrong?
Thank you

Read the documentation for ImageIcon(String path) -- the String is a file path,
not a URL. If you want to pass a URL to ImageIcon, use ImageIcon(URL url).
So, either of the following works:
URL url = new URL("file:///e:/image/MyImage.JPG");
ImageIcon imageIcon1 = new ImageIcon(url);
String path = "e:/image/MyImage.JPG";
ImageIcon imageIcon2 = new ImageIcon(path);In case you even need it, to convert a file into a URL, you can write:
URL url = file.toURI().toURL();And finally, you may want to check out BufferedImage and ImageIO.
You can read in a BufferedImage in one line:
BufferedImage image = ImageIO.read(file_or_url_etc);and a BufferedImage offers may advantages over a plain old image.

How to get and read uplaoded files

Hi,
I need to design a view wherein I need to list the uploaded files in Webdynpro(Java) application, and also need to read file from server. the filetype is Microsoft excel.

Hi
First You have to download the jxl.jar file. You can get this file from the Below site
JExcelApi v2.6.4 (1747kbytes)
It will be in Compressed Fromat So Unzip it to get the Contents
After Unzipping The File You will get a Folder (jexcelapi/jxl.jar)
Now in NWDS open web dynpro explorer, Right Click Your Project, a popup menu will appear and in that click Properties
You will get window displaying your Project Properties
On Left Side of the window You Will Find "Java Build Path"
Click That "Java Build Path" and you will get 4 Tabs Showing ( Source,Projects,Libraries,Order and Export)
Click Libraries Tab
You will find options many options buttons
In that click the Button "Add External Jars"
You will get Window in order to fecth the jxl.jar file from the location you had stored
After selecting the jxl.jar i will get displayed and click ok
Now Open Navigator
Open Your Project
You will find Lib folder
Copy the jxl.jar to that lib folder
Note : You cannot Read the Content from the excel file directly
First You Have to copy that file to the Server,
And from the Server you can get the file absolute path
With the absolute path you can read the contents of the Excel file
You have to save the Excel file as .xls Format and Not as xlsx format i will not accept that...
You have Upload the Excel file from the Server Using the File Upload UI Element
This Coding will extract 3 columns from the Xls File
Coding
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import jxl.Cell;
import jxl.Sheet;
import jxl.Workbook;
import com.sap.fileupload.wdp.IPrivateFileUpload_View;
import com.sap.tc.webdynpro.services.sal.datatransport.api.IWDResource;
public void onActionUpload_File(com.sap.tc.webdynpro.progmodel.api.IWDCustomEvent wdEvent )
 //@@begin onActionUpload_File(ServerEvent)
 IPrivateFileUpload_View.IContextElement element1 = wdContext.currentContextElement();
 IWDResource resource = element1.getFileResource();
 element1.setFileName(resource.getResourceName());
 element1.setFileExtension(resource.getResourceType().getFileExtension());
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public void onActionUpload_File_in_Server(com.sap.tc.webdynpro.progmodel.api.IWDCustomEvent wdEvent )
 //@@begin onActionUpload_File_in_Server(ServerEvent)
 InputStream text=null;
 int temp=0;
 try
 File file = new File(wdContext.currentContextElement().getFileResource().getResourceName().toString());
 FileOutputStream op = new FileOutputStream(file);
 if(wdContext.currentContextElement().getFileResource()!=null)
 text=wdContext.currentContextElement().getFileResource().read(false);
 while((temp=text.read())!=-1)
 op.write(temp);
 op.flush();
 op.close();
 path = file.getAbsolutePath();
 wdComponentAPI.getMessageManager().reportSuccess(path);
 catch(Exception e)
 e.printStackTrace();
 //@@end
public void onActionUpload_Data_into_Table(com.sap.tc.webdynpro.progmodel.api.IWDCustomEvent wdEvent )
 //@@begin onActionUpload_Data_into_Table(ServerEvent)
 try
 Workbook wb =Workbook.getWorkbook(new File(path));
 Sheet sh = wb.getSheet(0);
 //wdComponentAPI.getMessageManager().reportSuccess("Columns = "+sh.getColumns());
 //wdComponentAPI.getMessageManager().reportSuccess("Rows = "+sh.getRows());
 int columns = sh.getColumns();
 int rows = sh.getRows();
 int i=0;
 for(int j=1;j<=rows;j++)
 ele=wdContext.nodeTable_Data().createTable_DataElement();
 Cell c1 = sh.getCell(i,j);
 ele.setTab_Name(c1.getContents());
 Cell c2 = sh.getCell(i+1,j);
 ele.setTab_Degree(c2.getContents());
 Cell c3 = sh.getCell(i+2,j);
 ele.setTab_Percentage(c3.getContents());
 wdContext.nodeTable_Data().addElement(ele);
 catch(Exception ex)
 wdComponentAPI.getMessageManager().reportSuccess(ex.toString());
 //@@end
The following code section can be used for any Java code that is
not to be visible to other controllers/views or that contains constructs
currently not supported directly by Web Dynpro (such as inner classes or
member variables etc.). 
Note: The content of this section is in no way managed/controlled
by the Web Dynpro Designtime or the Web Dynpro Runtime.
//@@begin others
String path;
IPrivateFileUpload_View.ITable_DataElement ele;
//@@end
make sure that the cardinality of the node i.e. upload node is 1:1

How to get th displaye record count through SQL*Plus without result

set lines 155
set pages 100
set autoprint on
variable cv refcursor
set serveroutput on size 1000000
set timing on
set feedback on
set echo on
exec proc_name (input1, input2, :cv);how to get the record count without resultset display in the sql*plus promt ...?
plz help me....

This is my earilier code
set lines 155
set pages 100
set autoprint on
variable cv refcursor
set serveroutput on size 1000000
set timing on
set feedback on
set echo on
exec proc_name (input1, input2, :cv);
Then i have tried to execute like this
declare
disp SYS_REFCURSOR;
cv SYS_REFCURSOR;
cnt number :=0;
begin
proc_name (input1, input2, :cv);
FOR disp in cv --here cv is the set of record set
LOOP
--FETCH cv INTO disp;
EXIT WHEN cv%NOTFOUND;
cnt := cnt + 1;
END LOOP;
dbms_output.put_line(cnt);
dbms_output.put_line(cv%rowcount);
CLOSE cv;
end;
getting error...
LOOP
ERROR at line 8:
ORA-06550: line 8, column 2:
PLS-00103: Encountered the symbol "LOOP" when expecting one of the following:
. ( % ; for
The symbol "; was inserted before "LOOP" to continue.
ORA-06550: line 13, column 2:
PLS-00103: Encountered the symbol "DBMS_OUTPUT"
ORA-06550: line 13, column 27:
PLS-00103: Encountered the symbol ";" when expecting one of the following:
. ( , * % & - + / at mod rem <an identifier>
<a double-quoted delimited-identifier> <an exponent (**)> as
from into || bulk
I have set of executable procedure script for exec procedure1(input1, input2 :cv); , exec procedure1(input1, input2 :cv);,.... like that. But i want only the record count, while we execute all these scripts in the sql promt...How to do that one.. ?

How to retrieve and display image from database in a web page

Hi all;
I have been trying this for some time now. I have found some tutorials so far but none of them addresses my concern. Here it is:
I have built a web application that can connect to an Oracle DB.
I have a table called "employee", where I record any employee details, among which the employee picture. I stored the pictures and the finger prints using "Oracle sql developper" as blob type.
How can i retrieve and view all these information when i run the application?
I can easily retrieve all other types of value, but the image(BLOB type) has been a nightmare for me.
HELP PLEASE.

morgalr wrote:
I believe your Binary Large Obejct will come back as an array of int, and you'll need to use BufferedImage it's associated API to get it to a viewable image configuration.I don't think BufferedImage immediately solves the problem -- this is a web app, so I assume the image will be displayed using the HTML IMG tag.
Solution: google. There are many example of how to do this. For example, any book on servlets will have an example of dishing up a dynamic image.

How to format and display xml file as displayed in IE

I want to display the xml file as it is displayed in Internet Explorer. Which component I should use and how?
Thanks in advance
Sachin

You mean you want to see the XML source?
You need to replace the characters '<' and '&' with corresponding entities '<' and '&'. You can use replaceAll, but do the ampersands first.
Then I suggest you probably want to put them in a <PRE> block.

How to open and display htm file in iexplore

Friends,
Lets say i have a .htm file and its in the location of C:\BAPI_CUSTOMER_GETSALESAREAS\SALESAREAS.HTML , now i want to open that file in internet explorer when some one click on a particular button this would be happend.
I write following code :
import java.io.*;
public class Test{
public static void main(String[] args){
try{
     String command = "cmd /c start C:\BAPI_CUSTOMER_GETSALESAREAS\SALESAREAS.HTML";
          Runtime.getRuntime().exec(command);
          /* Runtime rt = Runtime.getRuntime( );
          rt.exec( "IEXPLORE.EXE" );
          return;*/
}catch(Exception e){
     e.printStackTrace();
This will give me the error due to specifying the path of html pages, will you tell me how to achieve that.
Thanks.
Hitz

u hav't given escape seq in
String command = "cmd /c start C:\BAPI_CUSTOMER_GETSALESAREAS\SALESAREAS.HTML";replace all \ by \\ it wil work..
ie.
String command = "cmd /c start C:\\BAPI_CUSTOMER_GETSALESAREAS\\SALESAREAS.HTML";

How to get and display voltage value in Labview?

First a little background:
I am a college student doing an internship at a university and my project for the summer involves load cells. I am planning to use LabVIEW as both a multimeter and a calculator that would convert the voltage given off by the load cell into the force exerted on the load cell.
Now here comes the situation:
I have gotten everything hooked up and the load cell is working fine when using a standard multimeter. The data acquisition card is also working fine (The dac is the Measurement Computing USB-2416) as it was reading the same voltages as the multimeter. So all that was left is to put a numerical indicator and use some block code to send the voltage amounts to the indicator.
But the problem is: I simply do not know how to make the proper coding and the Internet is of no help to me on this subject.
My first thought is to do something using AIn() like the first attached picture show, but that resulted in an error stating:
"This function can not be used with this board."
Which is odd, for I am sure this is the right function to get analog readings from the dac.
Then I do something like the second picture, which does not produce an error, but it does produce a value of 255, which is obviously not correct.
At that point, I went on the Internet to get some answers, only to return with no answers at all.
And now, I turn to you guys to help me, for I have a single big question:
Which blocks/code should I use to obtain a voltage from a dac like the Measurement Computing USB 2416 I am using?
Summary of details:
The DAC I am using is the Measurement Computing USB-2416
The DAC is loaded with the latest drivers and Instacal was used as well
The LabVIEW I am using is LabVIEW 2012 version 12, 32 bit.
I got ULx and Universal Library for LabVIEW installed.
The operating system is Windows 7 working on a desktop that is a few years obsolete.
With that being said, can you guys help me out, please?
Attachments:
Lab View Help 1.png ‏4 KB
Lab View Help 2.png ‏4 KB

If you installed the entire Measurement Computing MCC-DAQ CD, you will have installed the ULx for NI LabVIEW. It comes with a bunch of examples. It makes sense to open those examples, and use them as the starting point.
Take a look at the Quick Start for the ULx for LabVIEW - http://www.mccdaq.com/pdfs/manuals/QS%20ULx%20for%20NI%20LabVIEW.pdf
Also, the more comprehensive help: http://www.mccdaq.com/pdfs/manuals/lvulx.zip
As you can see, there are quite a few examples.
- cj
Measurement Computing (MCC) has free technical support. Visit www.mccdaq.com and click on the "Support" tab for all support options, including DASYLab.

How to get and display only some items out of an xml source

hi everybody, i have a designer-pdf based on a xsd. from within this pdf i call a second one and pass global variables to it. i want to use these vars to get specifics items out of an xml source. example: say that my xml is build like this: <form(min1-max1)> <subform(min1-max unbounded)/> <subform(min1-max unbounded)/> <subform(min1-max unbounded)/> <subform(min1-max unbounded)/> <subform(min1-max unbounded)/> </form> and i want just to pic up the subform element with index '2'. is there a way to do that? thanks, valerio

If you've got a chunk of XML in a string, you can read from it using XPath notation. Here's an example. Hope it helps:
var strXML = "JaredLangdonFredFlintstone";
var oXML = XMLData.parse(strXML, false);
var oFirstLName = XMLData.applyXPath(oXML,"//MyRoot/Person[1]/LName");
var oSecondLName = XMLData.applyXPath(oXML,"//MyRoot/Person[2]/LName");
xfa.host.messageBox("First LName is: " + oFirstLName.value + "\nSecond LName is: " + oSecondLName.value);
Jared Langdon
http://www.jlangdon.ca

How to get and display image file through servlet

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