[jira] [Created] (NIFI-10754) Nifi Expression Language method urlEncode does encode a URL path correctly when it contains white space

["Daniel Stieglitz (Jira)" <ji...@apache.org>]

Daniel Stieglitz created NIFI-10754:
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             Summary: Nifi Expression Language method urlEncode does encode a URL path correctly when it contains white space
                 Key: NIFI-10754
                 URL: https://issues.apache.org/jira/browse/NIFI-10754
             Project: Apache NiFi
          Issue Type: Bug
            Reporter: Daniel Stieglitz


The Nifi Expression Language urlEncode method replaces white space with a + and not %20. That is fine for the query section of a URL but not the path. There are many Stackoverflow posts which detail the issue. Here is one, [URLEncoder not able to translate space character|https://stackoverflow.com/questions/4737841/urlencoder-not-able-to-translate-space-character]

Our particular scenario is where we build a URL from attributes and then try to call the URL with InvokeHTTP

e.g. of an issue
{code:java}
https://somehost/api/v1/somepath /actual?att1=something&att2=somethingelse{code}
 

Using urlEncode will convert that url to 
{code:java}
https%3A%2F%2Fsomehost%2Fapi%2Fv1%2Fsomepath+%2Factual%3Fatt1%3Dsomething%26att2%3Dsomethingelse{code}
The + in the URL path is not the same as a blank space hence the call to InvokeHttp fails.



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