I am creating json file using echo statement ,it works fine as long as static string.

echo '
{
    "common": {
        "baseUri": "https://mycompany.com",
        "ipPrefix": "192.23.4.",
     }
}' > test.json

But when I need to interpolate string inside echo command it is not working.

 echo '
    {
        "common": {
            "baseUri": "$company_name",
            "ipPrefix": "192.23.4.",
         }
    }' > test.json

How to create json file in jenkins with parameter values substituted?

CodePudding user response：

The issue is due to the quotes as suggested in the comments.

Script below should work for you:

company_name="https://mycompany.com"
echo '{
     "common": {
          "baseUri": "'$company_name'",
          "ipPrefix": "192.23.4."
     }
}' > test.json

Output:

{
     "common": {
          "baseUri": "https://mycompany.com",
          "ipPrefix": "192.23.4."
     }
}

The value of any variable can’t be read by single quote ', since it only represents the literal value of all characters within it. To get the value of company_name we need to end the single quotes, then add the variable and start single quotes again.

Parameter expansion
Quoting

CodePudding user response：

With pipeline utility steps plugin, you can write any groovy map straight to a JSON file:

def company_name = "http://mycompany.com/"
def map = [ 
    "common" : [ 
        "baseUri": company_name,
        "ipPrefix": "192.23.4."
    ]
]

writeJSON json: map, file: test.json