req.body is coming empty when calling api in postman and application

I'm trying to use an api in nodejs but I can not pass the parameters the req.body is empty and I can not identify the problem

var express = require('express')
var app = express()
var bodyParser = require('body-parser')
var core_use = require('cors');
var sql = require("mssql");

app.use(core_use());
app.use(bodyParser.json())
app.use(bodyParser.urlencoded({
  extended: true
}));

var retorno = {
    method: '',
    uri: '',
    response: []
};

app.get('/consultarCartaoSus', function (req, res) {
    sql.connect(config, function (err) {
        var request = new sql.Request();
        console.log(req.body);
        // query to the database and get the records ''
        request.query('select * from clientes ', function (err, response) {
            if (err) {
                sql.close();
                console.log(err);
            };
            retorno.method = 'GET';
            retorno.uri = 'consultarCartaoSus';
            retorno.response = response.recordsets;

        res.setHeader('Access-Control-Allow-Origin', '*');
        res.json(retorno);
        sql.close();
    });

});