mvn clean spring-boot:run

curl --location --request POST 'http://localhost:8080' \
--header 'Content-Type: application/json' \
--data-raw '{
  	"name":"dalonng",
  	"age":27,
  	"userinfo":{
  		"name2":"demo",
  	     "age2":333
  	}
}' | jq .

{
  "name": "rongfengliang",
  "age": 27,
  "userinfo": {
    "name2": "rule wwwwwwwwwwwwwwwwww",
    "age2": 333
  }
}