FIG: request header parameters need to add the map, this parameter is a fixed string and returned from the fields interfaces splicing together: "Bearer" + token field
String concatenation steps:
Open function on JMeter assistant, -V selection function, as shown below:
2. The value to be written into the splicing: + fixed string taken out parameters (space where the character string is fixed within the spaces, the spaces need not be removed)
3. Click generating, put into the request header string generated in the herd, and only if no other parameters, the need to remove the comma, and then run it
