URL encoding function

Hi all,

I need to convert a string into a URL. I'm trying to use the urlencode function but it doesn't work properly, converting spaces to plus signs instead of the escape sequence %20. How can I convert the string properly, so space becomes %20 and other non-alphanumeric characters are replaced by their corresponding escape sequences?

Answer 1

[Fangjun Jiang]

Yes, it is weird. urlencode() is an one-line function. type "edit urlencode.m" to see if you can change the encoding method and then try again.

>> urlencode('http://www.mathworks.com/matlabcentral')
ans =
http%3A%2F%2Fwww.mathworks.com%2Fmatlabcentral

[Paulo Silva]

http://download.oracle.com/javase/1.5.0/docs/api/java/net/URLEncoder.html

Answer 2

[Morrie Gasser]

If you are using the encoded result for a URI or URL, note that in R2016b there is a new class, matlab.net.URI, which may do the encoding you're looking for.

[Tom Hawkins]

matlab.net.URI also appears to encode spaces (in query parameters etc) as + characters instead of %20.

[Sean]

That is also what I am seeing in 2023b.

tst = matlab.net.URI('http://2.2.2.2:20000', 'stringVal', 'test string');

tst.EncodedURI

ans = 

    "http://2.2.2.2:20000?stringVal=test+string"

Answer 3

[Muhammad Siddiqui]

I'm trying to detect SQL injection in my course of Pattern Recognition. My algorithm would be as follows:-

1) Encode URL feeded by user (this step is feature detection)

2) Compare the URL with the dataset of false URL.

3) Accordingly, classify whether URL is vulnerable or otherwise.

Please help me in writing code for above-stated steps. Prompt assistance is requested

Answer 4

[Bereketab Gulai]

Here is an anternative,

Using mlreportgen.utils.fileToURI

report = getReport(x, 'extended', 'hyperlinks', 'off');
% Take some of the report beginning, replace
% spaces, they will be encoded (NOTE: potential other things may be encoded which could fail)
reportBeginningText = strrep(extractBetween(report, 1, 10), ' ', '%20'); 
% mlreportgen.utils.fileToURI is the only correct provider of encoded path, I suppose.
% However, "file:/c:/some/path" needs to be removed
formattedReport = reportBeginningText + extractAfter(mlreportgen.utils.fileToURI(report), reportBeginningText);

This example was used with mailto URL.