Develop Reference

File download error only in file name with Comma

In my file download API case an error like this.
org.apache.catalina.connector.ClientAbortException: java.io.IOException: Broken pipe
at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:380)
at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:420)
at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:345)
at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:405)
at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:393)
at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:96)
at org.springframework.util.StreamUtils.copy(StreamUtils.java:128)
at org.springframework.util.FileCopyUtils.copy(FileCopyUtils.java:109)
at
I notice that the error only occurs when trying to download a file with a name containing comma(,) otherwise it works perfectly.
In my API I set the response like this:
response.setContentType("application/octet-stream");
response.setHeader(Constants.CONTENT_DISPOSITION, "attachment; filename= " + fileSeedName);
System.out.println(file.exists());
FileCopyUtils.copy(new BufferedInputStream(new FileInputStream(file)), response.getOutputStream());
response.flushBuffer();
Can anyone please help me.

Wrap the filepath in "Double Quotes"

the filename need double quotes to work
header('Content-Disposition:attachment;filename="' . $fileName . '.pdf"');

This is a known issue specific to Google Chrome specifically related to the Content-Disposition header. According to numerous references (just Google “Chrome content-disposition comma”), this is caused by the fact that chrome doesn't properly handle escaping of commas while Firefox, IE, etc. do. According to a few sites, this was introduced relatively recently and Google doesn't plan on fixing it.
Reference link

Using the created document trough FPDF with PHP/JAVA

I created a PDF document with PHP using FPDF. The next thing I want to do is silently printing the document without downloading the PDF file to the computer.
I've made the following code:
$pdfprintable = $pdf->Output(''.'.pdf','S');
$printcmd = "java -classpath jPDFPrint.jar;pdfprintcli.jar cli.PDFPrintCLI $pdfprintable";
exec($printcmd);
And it returns the following error message:
Warning: exec(): NULL byte detected. Possible attack in C:\Users\Jordy\Desktop\XAMPP\htdocs\php\stickers\pdf.php on line 392
If I echo the $pdfprintable in PHP it shows a lot of weird characters.

Are you sure the java command is supposed to be used with an hexadecimal string represenation of the PDF ?
use option
$pdfprintable = $pdf->Output('USEAFULLPATHTOFILE.pdf','F');
With the above the PDF is generated and then you can try to print it with the java application if that one works.
Also if you are loading the PDF correctly in FPDF you should be able to use the option D in ->Output
$pdfprintable = $pdf->Output('USEAFULLPATHTOFILE.pdf','D');
Use this to verify the that the PDF is loaded and also managed correctly by FPDF.
Also notice your example code is very limited.
If you need more troubleshooting pls show the Java and the full PHP source relevant to printing operation, loading or creation of the PDF in FPDF

How can I change the Standard Out to "UTF-8" in Java

I download a file from a website using a Java program and the header looks like below
Content-Disposition attachment;filename="Textkürzung.asc";
There is no encoding specified
What I do is after downloading I pass the name of the file to another application for further processing. I use
System.out.println(filename);
In the standard out the string is printed as Textk³rzung.asc
How can I change the Standard Out to "UTF-8" in Java?
I tried to encode to "UTF-8" and the content is still the same
Update:
I was able to fix this without any code change. In the place where I call this my jar file from the other application, i did the following
java -DFile.Encoding=UTF-8 -jar ....
This seem to have fixed the issue
thank you all for your support

The default encoding of System.out is the operating system default. On international versions of Windows this is usually the windows-1252 codepage. If you're running your code on the command line, that is also the encoding the terminal expects, so special characters are displayed correctly. But if you are running the code some other way, or sending the output to a file or another program, it might be expecting a different encoding. In your case, apparently, UTF-8.
You can actually change the encoding of System.out by replacing it:
try {
System.setOut(new PrintStream(new FileOutputStream(FileDescriptor.out), true, "UTF-8"));
} catch (UnsupportedEncodingException e) {
throw new InternalError("VM does not support mandatory encoding UTF-8");
}
This works for cases where using a new PrintStream is not an option, for instance because the output is coming from library code which you cannot change, and where you have no control over system properties, or where changing the default encoding of all files is not appropriate.

The result you're seeing suggests your console expects text to be in Windows "code page 850" encoding - the character ü has Unicode code point U+00FC. The byte value 0xFC renders in Windows code page 850 as ³. So if you want the name to appear correctly on the console then you need to print it using the encoding "Cp850":
PrintWriter consoleOut = new PrintWriter(new OutputStreamWriter(System.out, "Cp850"));
consoleOut.println(filename);
Whether this is what your "other application" expects is a different question - the other app will only see the correct name if it is reading its standard input as Cp850 too.

Try to use:
PrintStream out = new PrintStream(System.out, true, "UTF-8");
out.println(test);

jQuery validation in JSP

For my servlet Java program, I have used JSP and used jQuery client side validation for .xls for uploading a file. It's running successfully for all the user but one of our users is getting problems while uploading a .xls file. The program is showing an alert message and does not allow to upload a file. We also checked browser compatibility.
Questions:
What would be the reason?
Is it adding extra char with extension .xls? If yes, then what would be solution?
Is it a network issue? If yes, then what would be solution?
This is the code:
function dosearch(){
var reportFile = document.form1.reportFile.value;
if(reportFile==null || reportFile==''){
$("#span_filename").show();
if(!window.console)
{
window.console = {log: function(){}};
}else{
console.log("file name is not valid"+reportFile);
}
}else if(reportFile.substring(reportFile.indexOf(".")+1)!="xls"){
alert("Please make sure the uploaded file is an excel file");
if(!window.console)
{
window.console = {log: function(){}};
}else{
console.log("invalid file format or might be its adding extra name or extension name with file , "+reportFile);
}
}else if(confirm('Do you want to upload now?')){
form1.bt1.disabled=true;
$("#pro").show();
document.form1.action='catalog?module=PayrollResultUpload&cmd=doUpload';
document.form1.submit();
}

Well, seems that you are only validating xls extension. To improve this, for example to check xlsx extension, I suggest you to make a regex pattern check.
Change the line:
}else if(reportFile.substring(reportFile.indexOf(".")+1)!="xls"){
with this other version:
}else if(reportFile.substring(reportFile.indexOf(".")+1).match(/^xls.?$/i)){
This will check if there is a character at the end of the extension.
Regarding network issues... You can check the connection with an AJAX worker polling connection regularly and advising the user if there is no connection, but I think its too complicated for this case. Better tell the user to try to upload later ;)

I have done some RND test in browser console there, I have got the exact problem , its getting extra dot(.) before the file but that dot(.) was not in the file it was in the client systems folder structure i.e. C:\ads.test\file\FILE_NAME_HERE.xls . So, I have used lastIndexOf() method instead of indexOf() method . now it running fine without any problem.
#Thiamath , gratitude for your valuable information for me,and be in a part for this question.

reading an html with matlab

I would like to read some html using matlab.
I've already tried urlread but got the url read error
Getting data into MATLAB from HTTPS:
so i tried using java with this:
Handling an invalid security certificate using MATLAB's urlread command.
unfortunately i don't know how to use java with matlab.
so i tried this code and it seems to work
url = 'https://stackoverflow.com/questions/11053664/use-java-in-matlab';
is = java.net.URL([], url ).openConnection().getInputStream();
br = java.io.BufferedReader(java.io.InputStreamReader(is));
str = char(br.readLine());
however i would like to get the whole html page. so i can use regexp.
My kingdom for some help

There is a function in matlab that does that... The name is urlread!
See http://www.mathworks.com/matlabcentral/answers/973