Jenkins: Using variable in Shell Script / CURL Request

Question

I save a number out of a response from an earlier HTTP Request into a variable. In the CURL Request I need to insert this number into the URL, but somehow It doesn´t get recognized as a variable. It just gets sorted out which is why the URL is wrong and I get a 400 Error.

script{

// first httpRequest where I get the number from
def response = httpRequest httpMode: 'POST', url:"https://myServer.com", contentType: 'APPLICATION_JSON_UTF8', requestBody: 'myBody'

def props = readJSON text: response.content

def num = props.id[0]       //num stores the number now

sh(Script: curl "https://myServer.com/$num/files" -i -X POST -H Content-Type:multipart/form-data -F [email protected]
}

The console output shows me that the sh tries to reach https://myServer.com//files , so it leaves out the variable.

I also tried to put the whole URL into a variable and refer in curl but it doesn´t get recognized as well. Of course I tried several typing options like ${num}, '$num' etc...

Any ideas?

EDIT

I also get the message "message":"The given url contains malicious characters" , probably because of the '$'

Another weird thing: If I type ${props.id[0]} instead of ${num} (which doesn´t make any difference because they hold the same number) the message changes to "/var/jenkins_home/workspace/Pipeline Test@tmp/durable-153a0829/script.sh: 1: /var/jenkins_home/workspace/Pipeline Test@tmp/durable-153a0829/script.sh: Bad substitution"

Are you sure num does not hold an empty string? Try printing num to check what value is stored in num. — Shane Bishop
yes num is filled with the correct number e.g. 379192 I also can print it within the shell script but it doesn´t work in the url — rw44

rw44 rw44 · Accepted Answer · 2021-01-11T13:21:04

I solved the problem. the curl request needs to be surrounded by double quotation marks.

sh("curl https....")

The double quotation marks enable the possibility to use the variables defined in groovy script. Without them it just gets interpreted as java String.

Jenkins: Using variable in Shell Script / CURL Request

1 Answers