1. create CSV file
note: the first line is parameter name
2. Add Controller
Edit >Add >Logic Controller >Loop Controller, and set number as test data line
3. Add Http Request, and input http request information, including protocal, server, path, method...
Edit >Add >Sampler >Http Request
4. Add Body Data, and put parameter name like "${createdBy}"
5. CSV Data Set Config
Edit >Add >Config Element >CSV Data Set Config
6. Run to check
Method Get was only executed once, method Mock Create was executed 3 times, because loop controller was set 3. And different parameter was adapted.