Jenkins pipeline: passing in data variable as string into curl command - jenkins

Question

So I'm trying to pass in a string (data) into this sendSlackMessage function but it's not going into the curl command correctly. data is being passed in from my jenkinsfile.
It's working fine in the echo command though.
Can someone tell me what I'm doing wrong?
data = """{'channel': '#mychannel','username': 'jenkins-bot','icon_emoji': ':lol:','text': 'HERERERERE (<$BUILD_URL|Open>)','attachments': [['color': '#36a64f','fields': ['title': 'UPDATING INFOR','value': 'HELLOWORLD','short': 'true']]]}"""
void sendSlackMessage(String data) {
this.steps.sh(returnStdout: true, script: "echo hello world ${data} hello world again")
this.steps.sh(returnStdout: true, script: "curl -X POST -H 'Content-type: application/json' --data '${data}' https://hooks.slack.com/services/T12345671/sdfsdfsdf/sdf7sdf7gsdf")
}

Answer 1

Please try the below implementation
data = """{'channel': '#mychannel','username': 'jenkins-bot','icon_emoji': ':lol:','text': 'HERERERERE (<$BUILD_URL|Open>)','attachments': [['color': '#36a64f','fields': ['title': 'UPDATING INFOR','value': 'HELLOWORLD','short': 'true']]]}"""
void sendSlackMessage(String data) {
List curlCommand = []
curlCommand.add('curl -X POST -H')
curlCommand.add('\'Content-type: application/json\'')
curlCommand.add('--data')
curlCommand.add(data) // Maybe you have to see if you see to add a single quote here and escape it
curlCommand.add('https://hooks.slack.com/services/T12345671')
sh (
returnStdout: true,
script: curlCommand.join(" "),
label: "send slack message"
)
}