I am generating static files on the fly but cannot get the URL function to work:
NB: here filename is a key-value returned by the controller
{{=P(A('Download ', filename,_href=URL('static', filename)))}}
generates an error:
type 'exceptions.SyntaxError'> when calling URL, function or function name required
However if I replace the filename variable with a string (as follows) the link is generated OK
{{=P(A('Download ', filename,_href=URL('static', 'abcis_data_42Data_.NO2.__.zip')))}}
Any ideas?
OK solved. filename is of type unicode and using str(filename) solves the problem.
I think what you might have to do here is go down the MVC hierarchy, so your code might look like:
{{=P(A('Download',filename,_href=URL(r=request,c='static',f=filename)))}}
Related
I only get one uri from the file_picker when saving. But so that I can display the correct path, I need the absolute path of the file. Unfortunately I haven't found a working solution. The library flutter_absolute_path unfortunately doesn't seem to work with the new Android versions anymore.
Does anyone have any idea how I could get the absolute path of the file.
example:
content://com.android.providers.downloads.documents/document/297
convert to:
/data/user/0/xxx/cache/dummy1.png
Check out the toFilePath() method of the dart:core package to see if it solves your problem.
I thought so too. But unfortunately I get an exception.
test code:
//uri output from file picker (fileInfo.identifier)
var uriPath = "content://com.android.providers.downloads.documents/document/297";
var uri = Uri.parse(uriPath);
print(uri.toFilePath());
exception
-> Unsupported operation: Cannot extract a file path from a content URI
I'm designing a jasper report using iReport which takes a parameter and fetches an image from a given URL:
The parameter is a user's screen name in twitter, and the url is it's profile image.
<image>
<reportElement x="4" y="51" width="73" height="64"/>
<imageExpression><![CDATA["https://api.twitter.com/1/users/profile_image?screen_name="+$F{user_screen_name}+"&size=bigger"]]></imageExpression>
</image>
It works great when the image exists. If it doesn't the following exception is thrown:
Error filling print... net.sf.jasperreports.engine.JRException: Error opening input stream from URL :
https://api.twitter.com/1/users/profile_image?screen_name=CPTCurtisHervey&size=bigger
Setting up the file resolver... net.sf.jasperreports.engine.JRRuntimeException:
net.sf.jasperreports.engine.JRException: Error opening input stream from URL :
https://api.twitter.com/1/users/profile_image?screen_name=CPTCurtisHervey&size=bigger
at net.sf.jasperreports.repo.DefaultRepositoryService.getInputStream(DefaultRepositoryService.java:138)
at net.sf.jasperreports.repo.RepositoryUtil.findInputStream(RepositoryUtil.java:186)
at net.sf.jasperreports.repo.RepositoryUtil.getBytes(RepositoryUtil.java:202)
at net.sf.jasperreports.engine.JRImageRenderer.getInstance(JRImageRenderer.java:141)
at net.sf.jasperreports.engine.fill.JRFillImage.evaluateImage(JRFillImage.java:498)
at net.sf.jasperreports.engine.fill.JRFillImage.evaluate(JRFillImage.java:441)
at net.sf.jasperreports.engine.fill.JRFillElementContainer.evaluate(JRFillElementContainer.java:257)
at net.sf.jasperreports.engine.fill.JRFillBand.evaluate(JRFillBand.java:468)
at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillColumnBand(JRVerticalFiller.java:2037)
at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillDetail(JRVerticalFiller.java:761)
at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReportContent(JRVerticalFiller.java:291)
at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:133)
at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:903)
at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:813)
at net.sf.jasperreports.engine.fill.JRFiller.fillReport(JRFiller.java:58)
at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:417)
at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:247)
at com.jaspersoft.ireport.designer.compiler.IReportCompiler.run(IReportCompiler.java:878)
at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:572)
at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:997) Caused by:
net.sf.jasperreports.engine.JRException: Error opening input stream from URL :
https://api.twitter.com/1/users/profile_image?screen_name=CPTCurtisHervey&size=bigger
at net.sf.jasperreports.engine.util.JRLoader.getInputStream(JRLoader.java:314)
at net.sf.jasperreports.repo.DefaultRepositoryService.getInputStream(DefaultRepositoryService.java:121)
... 19 more Caused by: java.io.FileNotFoundException:
https://api.twitter.com/1/users/profile_image?screen_name=CPTCurtisHervey&size=bigger
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1401)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:254)
at java.net.URL.openStream(URL.java:1029)
at net.sf.jasperreports.engine.util.JRLoader.getInputStream(JRLoader.java:310)... 20 more
Print not filled. Try to use an EmptyDataSource...
How can i handle this situation in the jrxml file?
I would like to simply add a fixed URL address in case it can't find one.
Anyone has any suggestions?
Thank you!
I think you need to add an additional helper class to handle this. You need a static method boolean urlExists(String url) that would allow you to put this in the imageExpression:
MyClass.urlExists($F{image_url}) ? $F{image_url} : $P{fallback_image}
It would be a simple class to write... but clearly there's additional complexity in adding in another .jar file. Without that method, I can't see any way to do the processing in the .jrxml.
in jrxml file,
to show image from url resource, use image expression URL()
like below, for example $F{ADPN_NO} is parameter from report
<imageExpression><![CDATA[new URL("http://anyserver:7001/images/"+$F{ADPN_NO}+".jpg")]]></imageExpression>
when onError occurred, it will show blank item, icon, or error that is set on jrxml.
the other way, outside of jrxml file, you can use java map object which contains img urls that is check by URL() or File() Exception ..
In my case I had a report to which I "injected" the image's url and it was causing an error with the certificate (the url I was "injecting" had the IP and it had to be a name for the certificate). After I changed the url it worked.
I'm having trouble downloading file with asp.net mvc2. This is how I do it in my download action:
return File(resultBytes, Settings.Default.CsvFileContentType, downloadName);
The problem is with the downloadName, this is how I generate it:
var downloadName = string.Format("{0}_{1}{2}", vModel.CompetitionEvent.Ends.Year, Text.RemoveDiacriticalChars(vModel.Competition.Title), Settings.Default.CsvFileExtension);
and when I debug, downloadName value is: "2011_SS C/C++/Pascal (I.).csv"
but what I get upon downlaod is: "Pascal (I.).csv".
Does anyone have an idea why this happens?
You simply cannot have a "/" character in a filename. Windows filenames in general cannot contain "\/:*?"<>|", so I assume the downloadname is being automatically truncated to adhere to this limitation.
Try replacing the "/" with a hypen ("-") instead, and see what happens :)
ASP.NET has four different types of file results:
FileContentResult: Sends the contents of a binary file to the response.
FilePathResult: Sends the contents of a file to the response
FileResult: Returns binary output to write to the response
FileStreamResult: Sends binary content to the response by using a Stream instance
Those descriptions are take from MSDN and with the exception of the FileStreamResult the first three sound identical. So what is the difference between them?
FileResult is an abstract base class for all the others.
FileContentResult - you use it when you have a byte array you would like to return as a file
FilePathResult - when you have a file on disk and would like to return its content (you give a path)
FileStreamResult - you have a stream open, you want to return its content as a file
However, you'll rarely have to use these classes - you can just use one of Controller.File overloads and let ASP.NET MVC do the magic for you.
Great question...and deserves more details. I find myself here as a result of an interesting situation. We were delivering some pdf attachments via the MVC3/C# environment. Our code got released and we started getting some responses from our clients that the downloads were behaving strangely when they were using Chrome and the file type was being converted over to 'pdf-, attachment.pdf-, attachment'. Yup...you got it...the whole thing. So, one could rewrite it to just be 'pdf' and the file would still save intact, but what a mess!
So, to describe the initial situation, we were setting the 'Content-Disposition' header then returning a FileContentResult...
var cd = new System.Net.Mime.ContentDisposition
{
FileName = result.Attachment.FileName,
Inline = false
};
Response.AppendHeader("Content-Disposition", cd.ToString());
return File(result.Attachment.Data, MimeExtensionHelper.GetMimeType(result.Attachment.FileName), result.Attachment.FileName);
Seemed good. Worked fine in IE. So I did some research and tried implementing FileStreamResult instead (keeping the Content-Disposition setter):
MemoryStream dataStream = new MemoryStream();
dataStream.Write(result.Attachment.Data, 0, result.Attachment.Data.Length);
dataStream.Position = 0;
return new FileStreamResult(dataStream, MimeExtensionHelper.GetMimeType(result.Attachment.FileName));
It fixed the issue in Chrome! Hmmm...but why in the heck should I have to take my perfectly good byte array and stream it and then return it via this to get the file name to work right?
Then came the Fiddler.
With FileContentResult, I got 2 Content-Dispositions in the header.
With FileStreamResult, I got 1.
FileContentResult appends a Content-Disposition header when providing the File Name and Chrome considers multiples of this header as an error.
Odd reaction...but definitely one that's good to know.
I am maintaining a classic asp application and while going over the code I came across two similar lines of code:
Request.ServerVariables("URL")
' Output: "/path/to/file.asp"
Request.ServerVariables("SCRIPT_NAME")
' Output: "/path/to/file.asp"
I don't get it... what is the difference? both of them ignore the URL rewriting that I have set up which puts the /path folder as the root document (the above URL is rewritten to "/to/file.asp")
More info:
The site is deployed on IIS 7
URL Gives the base portion of the URL, without any querystring or extra path information. For the raw URL, use HTTP_URL or UNENCODED_URL.
SCRIPT_NAME A virtual path to the script being executed. Can be used for self-referencing URLs.
See, http://www.requestservervariables.com/url
and /script_name for the definitions.
This could be a bug under IIS 7.
I could not get Request.ServerVariables("URL") and Request.ServerVariables("SCRIPT_NAME") to return different values. I've tried the cases where they were called from an included file (<!--#include file="file.asp"-->) or after a Server.Transfer.
Is this maybe there in case of Server.Transfer?
In the case where you do a server.transfer i think you would get different results
i.e. SCRIPT_NAME would be e.g. /path/to.transferredfile.asp whereas URL would remain as /path/to/file.asp