Reading lines from CSV files to build body request - groovy

Question

I'm creating a performance test with Jmeter and I need to create a body request like this:
{
[ "objectName1", "objectName2", ..., "objectNameN" ]
}
so need to create a Groovy script to build this request according to a certain .csv file with the objects names. And I have done something like this:
//Default separator
char SEPARATOR = ',';
String csvFile = props.get("csvPathAndName")
log.info('__________________________________________________________________________________________________________________________________________________________')
log.info(csvFile)
//function to read csv file
def readLines(String csvFile) {
File file = new File(csvFile);
List<String> objectNames = file.readLines();
// objectsNames.stream().forEach(e -> listOfString + ", " + e);
vars.put("listOfObjects", "'objectName1', 'objectName2', 'ObjectName3'");
}
readLines(csvFile)
Notice that in line
vars.put("listOfObjects", ...
I want to populate my listOfObjects with the values of my .csv file.
Someone can help me? I'm not really good at Groovy so I'm facing this problem now =//

Answer 1

I think you need to change this line:
vars.put("listOfObjects", "'objectName1', 'objectName2', 'ObjectName3'");
to this one:
vars.put("listOfObjects", '"' + objectNames.join('","') + '"');
and amend your request body to:
{
[ ${listOfObjects} ]
}
More information:
List.join() function
Apache Groovy: What Is Groovy Used For?

Answer 2

I've done this way. I've removed the last elements of the array to remove the end of file
, "
String csvFile = props.get("csvPathAndName")
log.info('__________________________________________________________________________________________________________________________________________________________')
log.info(csvFile)
//function to read csv file
def readLines(String csvFile) {
StringBuilder requestBody = new StringBuilder();
File file = new File(csvFile);
ArrayList<String> objectNames = file.readLines();
objectNames.eachWithIndex {
val, index ->
if (index == 0) {
requestBody.append(val + "\", ")
} else {
requestBody.append("\"" + val + "\", ")
}
}
requestBody.setLength(requestBody.length() -3)
vars.put("listOfObjects", requestBody.toString());
}
readLines(csvFile)
And my request body was just
[${listOfObjects}]