Request

The first parameter of the handler function is Request.
Request is a core Fastify object containing the following fields:

query - the parsed querystring
body - the body
params - the params matching the URL
headers - the headers
raw - the incoming HTTP request from Node core (you can use the alias req)
id - the request id
log - the logger instance of the incoming request
ip - the IP address of the incoming request
ips - an array of the IP addresses in the X-Forwarded-For header of the incoming request (only when the trustProxy option is enabled)
hostname - the hostname of the incoming request

fastify.post('/:params', options, function (request, reply) {
  console.log(request.body)
  console.log(request.query)
  console.log(request.params)
  console.log(request.headers)
  console.log(request.raw)
  console.log(request.id)
  console.log(request.ip)
  console.log(request.ips)
  console.log(request.hostname)
  request.log.info('some info')
})

Fastify 中文文档 (v2.12.1)

Request