Runtime Exception in Creating DataSink from Applet
Hi All
I am capturing screen and recording audio using JMF utilities. The application is working fine in applet viewer but as soon as I run the application from browser, a runtime exception is thrown while creating the datasink. The exact exception is "*create the DataSink: java.lang.RuntimeException: No permission to write files from applets*".
Although I am able to create files and have set read/write permissions as well.
The jar file I am using is self signed.
Please suggest what should I do.
Thanks in advance.
Best Regards
Kuldeep
This post is made assuming that my earlier assertion is correct.
user5450182 wrote:
..the thing is how would it help if someone else opens this application on his/her system from the browser. .. It Wouldn't. It would however, help the end user not to be 'spied on by web pages'. It is up to you to explain to the end user about the default option and convince them to change it.
..Would it be able to capture the user screen and.. No.
..generate the .mov file?Yes. No problem there.
Can you please explain the root cause of this problem? Which part of my explanation are you having trouble with?
.. I am newbie to applets and jmf .. That is a recipe for disaster. Applets are a PITA at the best of times. Now throw in an abandoned API on top of that, some 'high security' concerns & I can see much frustration for you.
It might make it simpler if you abandon the applet and instead use a webstart launched (J)Frame.
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/** Defines the number of frames per speex packet. */
int nframes = 1;
/** Defines the desired bitrate for the encoded audio. */
int bitrate = -1;
/** Defines the sampling rate of the audio input. */
int sampleRate = -1;
/** Defines the number of channels of the audio input (1=mono, 2=stereo). */
int channels = 1;
/** Defines the encoder VBR quality setting (float from 0 to 10). */
float vbr_quality = -1;
/** Defines whether or not to use VBR (Variable Bit Rate). */
boolean vbr = false;
/** Defines whether or not to use VAD (Voice Activity Detection). */
boolean vad = false;
/** Defines whether or not to use DTX (Discontinuous Transmission). */
boolean dtx = false;
//HArd code src format and dest
// private String srcPath ="junk.wav";
srcFormat = FILE_FORMAT_WAVE;
destFormat = FILE_FORMAT_OGG;
//destPath="junk.spx";
byte[] temp = new byte[2560]; // stereo UWB requires one to read 2560b
final int HEADERSIZE = 8;
final String RIFF = "RIFF";
final String WAVE = "WAVE";
final String FORMAT = "fmt ";
final String DATA = "data";
final int WAVE_FORMAT_PCM = 0x0001;
// Open the input stream
DataInputStream dis = new DataInputStream(new FileInputStream("junk.wav"));
// Prepare input stream
//DP - Sort out the Wave File
// read the WAVE header
dis.readFully(temp, 0, HEADERSIZE+4);
// Read other header chunks
dis.readFully(temp, 0, HEADERSIZE);
String chunk = new String(temp, 0, 4);
int size = readInt(temp, 4);
while (!chunk.equals(DATA)) {
dis.readFully(temp, 0, size);
if (chunk.equals(FORMAT)) {
typedef struct waveformat_extended_tag {
WORD wFormatTag; // format type
WORD nChannels; // number of channels (i.e. mono, stereo...)
DWORD nSamplesPerSec; // sample rate
DWORD nAvgBytesPerSec; // for buffer estimation
WORD nBlockAlign; // block size of data
WORD wBitsPerSample; // Number of bits per sample of mono data
WORD cbSize; // The count in bytes of the extra size
} WAVEFORMATEX;
if (readShort(temp, 0) != WAVE_FORMAT_PCM) {
System.err.println("Not a PCM file");
return;
channels = readShort(temp, 2);
sampleRate = readInt(temp, 4);
if (readShort(temp, 14) != 16) {
System.err.println("Not a 16 bit file " + readShort(temp, 18));
return;
// Display audio info
if (printlevel <= DEBUG) {
System.out.println("File Format: PCM wave");
System.out.println("Sample Rate: " + sampleRate);
System.out.println("Channels: " + channels);
dis.readFully(temp, 0, HEADERSIZE);
chunk = new String(temp, 0, 4);
size = readInt(temp, 4);
if (printlevel <= DEBUG) System.out.println("Data size: " + size);
//DP ENd sort wave file
//Now Choose the mode , we have a file sampled at 44100
mode = 2; // Ultra-wideband
// Construct a new encoder
SpeexEncoder speexEncoder = new SpeexEncoder();
speexEncoder.init(mode, quality, sampleRate, channels);
if (complexity > 0) {
speexEncoder.getEncoder().setComplexity(complexity);
if (bitrate > 0) {
speexEncoder.getEncoder().setBitRate(bitrate);
if (vbr) {
speexEncoder.getEncoder().setVbr(vbr);
if (vbr_quality > 0) {
speexEncoder.getEncoder().setVbrQuality(vbr_quality);
if (vad) {
speexEncoder.getEncoder().setVad(vad);
if (dtx) {
speexEncoder.getEncoder().setDtx(dtx);
// Display info
// Open the file writer
AudioFileWriter writer;
if (destFormat == FILE_FORMAT_OGG) {
writer = new OggSpeexWriter(mode, sampleRate, channels, nframes, vbr);
else if (destFormat == FILE_FORMAT_WAVE) {
nframes = PcmWaveWriter.WAVE_FRAME_SIZES[mode-1][channels-1][quality];
writer = new PcmWaveWriter(mode, quality, sampleRate, channels, nframes, vbr);
else {
writer = new RawWriter();
writer.open("junk.spx");
writer.writeHeader("Encoded with: " + VERSION);
int pcmPacketSize = 2 * channels * speexEncoder.getFrameSize();
try {
// read until we get to EOF
while (true) {
dis.readFully(temp, 0, nframes*pcmPacketSize);
for (int i=0; i<nframes; i++)
speexEncoder.processData(temp, i*pcmPacketSize, pcmPacketSize);
int encsize = speexEncoder.getProcessedData(temp, 0);
if (encsize > 0) {
writer.writePacket(temp, 0, encsize);
catch (EOFException e) {}
writer.close();
dis.close();
* Converts Little Endian (Windows) bytes to an int (Java uses Big Endian).
* @param data the data to read.
* @param offset the offset from which to start reading.
* @return the integer value of the reassembled bytes.
protected static int readInt(final byte[] data, final int offset)
return (data[offset] & 0xff) |
((data[offset+1] & 0xff) << 8) |
((data[offset+2] & 0xff) << 16) |
(data[offset+3] << 24); // no 0xff on the last one to keep the sign
* Converts Little Endian (Windows) bytes to an short (Java uses Big Endian).
* @param data the data to read.
* @param offset the offset from which to start reading.
* @return the integer value of the reassembled bytes.
protected static int readShort(final byte[] data, final int offset)
return (data[offset] & 0xff) |
(data[offset+1] << 8); // no 0xff on the last one to keep the sign
AudioFormat audioFormat;
TargetDataLine targetDataLine;
public Class[] getAllReturnedTypes() {
// TODO Auto-generated method stub
return null;
public String[] getParameterNames(String arg0) {
// TODO Auto-generated method stub
return null;
public String getSample(String arg0) {
// TODO Auto-generated method stub
return null;
public String getToolTip(String arg0) {
// TODO Auto-generated method stub
return null;
public boolean isDeprecated(String arg0) {
// TODO Auto-generated method stub
return false;
public String js_Record (String name){
captureAudio();
return "Started Recording " +name;
public String js_StopRecord (String name) throws IOException{
//new ActionListener(){
// public void actionPerformed(ActionEvent e)
//Terminate the capturing of input data
// from the microphone.
targetDataLine.stop();
targetDataLine.close();
// }//end actionPerformed
//};//end ActionListener
// JSpeexEnc ("junk.wav","output.spx");
JSencode();
return "Stop Records " +name;
//Play audio file
public AudioStream js_Playback (String name) throws IOException{
InputStream in = new FileInputStream("junk.wav");
AudioStream as = new AudioStream(in);
AudioPlayer.player.start(as);
return as;
public AudioStream js_ContPlay (AudioStream as) throws IOException {
AudioPlayer.player.start(as);
return as;
//Stop Play
public AudioStream js_Stop_Playback (AudioStream as) throws IOException{
AudioPlayer.player.stop(as);
return as;
//This method captures audio input from a
// microphone and saves it in an audio file.
private void captureAudio(){
try{
//Get things set up for capture
audioFormat = getAudioFormat();
DataLine.Info dataLineInfo =
new DataLine.Info(
TargetDataLine.class,
audioFormat);
targetDataLine = (TargetDataLine)
AudioSystem.getLine(dataLineInfo);
//Create a thread to capture the microphone
// data into an audio file and start the
// thread running. It will run until the
// Stop button is clicked. This method
// will return after starting the thread.
new CaptureThread().start();
}catch (Exception e) {
e.printStackTrace();
System.exit(0);
}//end catch
}//end captureAudio method
// This method creates and returns an
// AudioFormat object for a given set of format
// parameters. If these parameters don't work
// well for you, try some of the other
// allowable parameter values, which are shown
// in comments following the declarations.
private AudioFormat getAudioFormat(){
float sampleRate = 44100.0F;
//8000,11025,16000,22050,44100
int sampleSizeInBits = 16;
//8,16
int channels = 1;
//1,2
boolean signed = true;
//true,false
boolean bigEndian = true;
//true,false
return new AudioFormat(sampleRate,
sampleSizeInBits,
channels,
signed,
bigEndian);
}//end getAudioFormat
class CaptureThread extends Thread{
public void run(){
AudioFileFormat.Type fileType = null;
File audioFile = null;
//Set the file type and the file extension
// based on the selected radio button.
//if(aifcBtn.isSelected()){
// fileType = AudioFileFormat.Type.AIFC;
// audioFile = new File("junk.aifc");
// }else if(aiffBtn.isSelected()){
// fileType = AudioFileFormat.Type.AIFF;
// audioFile = new File("junk.aif");
// }else if(auBtn.isSelected()){
// fileType = AudioFileFormat.Type.AU;
// audioFile = new File("junk.au");
// }else if(sndBtn.isSelected()){
// fileType = AudioFileFormat.Type.SND;
// audioFile = new File("junk.snd");
// }else if(waveBtn.isSelected()){
fileType = AudioFileFormat.Type.WAVE;
audioFile = new File("junk.wav");
// }//end if
try{
targetDataLine.open(audioFormat);
targetDataLine.start();
AudioSystem.write(
new AudioInputStream(targetDataLine),
fileType,
audioFile);
}catch (Exception e){
e.printStackTrace();
}//end catch
}//end run
}//end inner class CaptureThread
} -
Runtime exception occurred during execution of application mapping program
Hi all
while testing intergase mapping i am getting this error----->
com/sap/xi/tf/_XI_FI_BAPI_CC_DOCUMENT_POST_REQ_MM:
com.sap.aii.utilxi.misc.api.BaseRuntimeException;RuntimeException in Message-Mapping transgormation:Runtime exception during processing target field mapping
/ns1:BAPI_ACC_DOCUMENT_POST/DOCUMENTHEADER/HEADER_TXT. THE message is:Exception:[java.lang.NullPointerException] in class com.sap.aii.mappingtool.flib3.TextFunction s method substring [null,com.sap.aii.mappingtool.tf3.rt.Context@2388897239]
I had used in the message mapping two user defined function scan you please look into the user defined functions, getPriviousMounthLastDate and FileName in the mapping for the target DocDate field
ihave used even this getPriviousMounthLastDate user defined function before using FileName
this is the code of userdefined function getPriviousMounthLastDate
Calendar cal = Calendar.getInstance();
SimpleDateFormat output = new SimpleDateFormat("yyyyMMdd");
cal.add(Calendar.MONTH,1);
cal.set(Calendar.DAY_OF_MONTH,1);
cal.add(Calendar.MONTH,-1);
cal.add(Calendar.DATE,-1);
StringBuffer dateBuffer = new StringBuffer();
output.format(cal.getTime(),dateBuffer,new FieldPosition(0));
return dateBuffer;
this is the code of userdefined function FileName
DynamicConfiguration conf = (DynamicConfiguration) container
.getTransformationParameters()
.get(StreamTransformationConstants.DYNAMIC_CONFIGURATION);
DynamicConfigurationKey key = DynamicConfigurationKey.create(
"http://sap.com/xi/XI/System/File",
"FileName");
String valueOld = conf.get(key);
return valueOld;
thanks sandep
Edited by: sandeep pendyala on Feb 6, 2008 6:52 AMHi Sandeep,
please check the trace file in SXMB_MONI,
which is avialble in response node.
if you analyze the trace, u can find-out....
error happend because of ehich field.
first copy the inbound xml from MONI and test it at message mapping.
then also, u can find-out the error.
regards
mahesh. -
Reg: Runtime exception occurred during application mapping
Dear SAP Gurus,
This is Amar Srinivas Eli working currently on SOAP to SOAP Scenario on PI 7.1 Server.
I Would like to inform you that I have done all steps regarding DESIGN and CONFIG and also regarding SERVICE REGISTRY part successfully.
While Testing the data in the WS Navigator by giving the input parameters I am getting an error that
*<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>*
*- <!-- Request Message Mapping*
-->
- <SAP:Error xmlns:SAP="http://sap.com/xi/XI/Message/30" xmlns:SOAP="http://schemas.xmlsoap.org/soap/envelope/" SOAP:mustUnderstand="1">
<SAP:Category>Application</SAP:Category>
<SAP:Code area="MAPPING">EXCEPTION_DURING_EXECUTE</SAP:Code>
<SAP:P1>com/sap/xi/tf/_HRS_LISTReferral_Response_MM_</SAP:P1>
<SAP:P2>com.sap.aii.mappingtool.tf7.IllegalInstanceExcepti</SAP:P2>
<SAP:P3>on: Cannot create target element /ns1:PI_ListRefer</SAP:P3>
<SAP:P4>ral_Response_MT. Values missing in queue context.~</SAP:P4>
<SAP:AdditionalText />
<SAP:Stack>Runtime exception occurred during application mapping com/sap/xi/tf/_HRS_LISTReferral_Response_MM_; com.sap.aii.mappingtool.tf7.IllegalInstanceException: Cannot create target element /ns1:PI_ListReferral_Response_MT. Values missing in queue context.~</SAP:Stack>
<SAP:Retry>N</SAP:Retry>
</SAP:Error>
These are the steps I did while implementing..
1. Importing the XSD's successfully
2. Developed the design and config part and also checked nearly 3-4 times regarding both REQ and
RESPONSE Mappings.
3. I already checked the link of WSDL once again...
4. Even I found REsponse Interface once again...
Still I am not getting where the error was ? Please guide me in detail in a right way in this issue.
Regards:
Amar Srinivas Eli
Edited by: Amar Srinivas Eli on Jan 13, 2009 7:53 AMHello,
I already checked all those queues and context fields////
Based on my Observation I found
1) As I am unable to view the SOAP BODY I increased the RUN TIME Trace Level to 3 and LOG_VAlue to 3
2) ANother most Important that I found later doing these settings are....
I found Receiver Pay LOAD and I copied that entire pay load and pasted it in
REceiver Message Mapping> Test Tab and Code->PASTED...and compared all those parameters
in the TEST TAB and DEFINITION TAB in Tree View whether all the mandatory receiver mapped
elements are coming I mean passing from source or not...
OBSERVATION::
I found that for nearly 3 fields there is a difference when I compared on Tree View in DEFINITION TAB and also parallely in the TEST TAB Tree View which I got by copied from MONI,,,,
see for example ::
CENTRE <----
> DISCHARGE DATE..
For going to CENTRE..here I found that in DEfiniition TAB...
Control Act Event-->Subject->document-->Component>Structured body> component> Section>Component>PatientCareProvisionEvent->EffectiveTime-->CENTRE
But immediately I have gone to TEST TAB and TREE VIEW and I found that respective field CENTRE is posting I mean passing any value or parameter to Discharged Date or not...
But I found that...
Control Act Event-->Subject->document-->Component>Structured body> component> Section>Component-->_PatientCareProvisionEvent_
This Implies that Effective Time and Centre are missing in the XML and I mean no values are passing to receiver right..
In PI XSD 's it is there but in I think after Compiling REQUEST MAPPING and while in returning to RESPONSE MAPPING I mean whenever the Response is posting to SOAP WEBSERVICE it is unable to found those target elements and I think due to this...
Am I Correct ?
If that is the case...Let me know where the issue is whether in the data present in the WEBSERVICE created on target side or in PI Side..any issue...
Regards:
Amar Srinivas Eli
Edited by: Amar Srinivas Eli on Jan 13, 2009 10:00 AM -
Finally.... Video captured from applet in Vista!!
Hello!
Hurray!! finally I can see myself smiling and waving back in browser in Vista.
I mentioned in another thread just a day earlier that I will post a new topic if I succeed in capturing from applets in Vista, so thats what I am doing.... This thread is all about how achieved it.
I have seen many posts mentioning problems in capturing from applets in vista. I was also one of the sufferer. And most people including me blamed that on restricted sandbox of Vista. But surprisingly it was all about classpath.
I think I mentioned in some earlier thread that the 'Java console' shows the classpath to be *"{JREHOME}/classes"* instead of the classpath specified in CLASSPATH environment variable. You can check that by pressing 's' which *'dumps system and deployment properties'* in the Java Console. You can check the classpath by noting the value of *"java.class.path"* field which for my case was"C:\\PROGRA~1\\Java\\jre6\\classes". This turned out to be the main problem. The applet was not accessing any classes from the real CLASSPATH instead it was considering the classpath to be jrehome/classes. So, now I had enough hint what to do next. I simply created a folder 'classes' in {JREHOME} and copied the jmf registry files to that folder. By registry files I mean *'jmf.properties'* and *'jmf.properties.orig'* files in *'{JMF Install}/lib'* folder (actually i don't which among them has got some thing to do with the registry but I copied them both). So, after doing this, all my capture applets, whether signed or unsigned started running. Earlier they all were throwing *"java.lang.RuntimeException: No permission to capture from applets"* exception even after I have allowed capture from applets in JMF registry. That was perhaps not taking affect because of classpath issues. So, thats the story.... if someone faces the same problem he can use this workaround or you can say hack ;-)
Some questions which can be asked from me would be:
1- Did you set your CLASSPATH environment variable correctly?
ans: Yes, infact all my jmf applications were running correctly, the problem was only with the applets.
2- What classpath other systems (e.g. XP) mention in the Java console ?
ans: surprisingly, the same classpath that Vista mentions i.e. {JREHOME}/classes. I tested on XP-SP3, but it supposedly had access to the real CLASSPATH also.
3- Is this problem really Vista specific?
ans: Can't say... but it can be. It maybe the case that Vista does not allow access to real CLASSPATH, but this problem can easily be my system specific, it would be called a general vista problem if this happens on all Vista systems, I need volunteers for this test. captfoss, can you please test this on your system? :)
4- Is this problem JMF specific?
ans: Chances are low. I am going to test this by making my own test library and adding it to classpath and then try to access it via applet. If this fails then this problem is not JMF specific.
Drawbacks of this work around:
1- This can be a pain for ordinary users , copying registry files from JMF/lib to JRE/classes.
2- Whatever you change in JMF registry would not be effective to the applets. As the old registry files are to be replaced with new registry files every time JMF registry is changed for changes to take effect in applets.
The real big question:
How can we force Vista to look in the real CLASSPATH? this is the real question, if this can be done just by changing some settings then all this workaround is useless :) I am looking forward to the answer of this question.....
captfoss, I would highly appreciate your comments.
Thanks for reading this rather long post.... :)
Thanks!A couple of comments here...the answer is, in fact, no, you didn't set your classpath correctly. One, you're probably using a JAR file to run your applet from (I'm not an applet programmer but I do believe that a JAR is required) which do not use the environment's classpath, they use their manifest classpath. No, the applet was not jared.
Second, I believe that the browser itself specifies its own classpath, which you cannot modify. I believe this would be considered a security feature...Both IE7 and firefox3 fail.
"You have little control over the CLASSPATH used by a browser for an Applet"
[http://mindprod.com/jgloss/classpath.html]
Ok this maybe the reason, I will go through the link....
2- What classpath other systems (e.g. XP) mention in the Java console ?
ans: surprisingly, the same classpath that Vista mentions i.e. {JREHOME}/classes. I tested on XP-SP3, but it supposedly had access to the real CLASSPATH also. There isn't a "real" CLASSPATH, there is just the classpath stored as an environmental variable. It's no more or less real than the one in the browser.Thats what I thought.... but I think {JREHOME}/classes is the default class path used by the jre whether we set any CLASSPATH variable or not it would be there, something of that sort.....
Lots of possibilities, but my best guess is that Vista doesn't let code running in the browser read environmental variables.Yes, I fully agree with this. I think I should file a bug report.
4- Is this problem JMF specific?
ans: Chances are low. I am going to test this by making my own test library and adding it to classpath and then try to access it via applet. If this fails then this problem is not JMF specific. Definately not. It would apply to any code that wants to access something on the classpath. You are right... as I said I would test it, I tested by making a small library, added it to classpath, made an application and an applet. As expected, the aplication worked while the applet failed.
Any application with a custom classpath would be affected.I don't understand what you mean here, do you mean 'Class-path' header in jar manifest?
I like the "installation requirement" part. I'd suggest looking into that. Alternately, there may be something in the security settings to allow access to environmental variables.I will try to look into both.
I just tried this statement in applet:
System.out.println( System.getProperty( "java.class.path" ) );It threw this exception:
Exception: java.security.AccessControlException: access denied (java.util.PropertyPermission java.class.path read)
I don't know what conclusion should I draw from this... this does mean applet has no right to know what the classpath is.... but this doesn't mean even jre plugin responsible for running applet does not know what the classpath is :)
Finally, I want to say that due to some problems I could not post earlier, and I may not post for few more days. But I appreciate your comments and would appreciate more of them.
Thanks! -
RunTime Exception in DrpDownByKey
Runtime exception -
com.sap.tc.webdynpro.progmodel.context.ContextException: MappedAttributeInfo(First_CompView.Color.VALUESET): must not modify the datatype of a mapped attribute
Code for DropDownByIndex----
IWDAttributeInfo attrInfo = wdContext.nodeColor().getNodeInfo().getAttribute(IPrivateFirst_CompView.IColorElement.VALUESET);
ISimpleTypeModifiable msType = attrInfo.getModifiableSimpleType();
IModifiableSimpleValueSet valueSet = msType.getSVServices().getModifiableSimpleValueSet();
valueSet .put("","choose");
valueSet .put("1","black");
valueSet .put("2","red");
valueSet .put("3","blue");
Getting Runtime error in the line----
ISimpleTypeModifiable msType = attrInfo.getModifiableSimpleType();
I am unable to set different colors as DropDownList dybamically.
Please help me out.Hi Anindita,
Request you to refrain from creating multiple threads for the same issue as this does not go well with the rules of SDN..
Creating so many redundant copies is like disregarding the readers' attention to the original posts & also degrading the quality of forums.
Currently, these are your threads on same problem in webdynpro-java forum:
DropDownByKey
DropDownBykey
RunTime Exception in DrpDownByKey
Please take care reg this.
Good Luck!
Anagha
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