`#include<ESP8266WiFi.h>

include<ESP8266WebServer.h>

ESP8266WebServer esp8266_sever(80);
const char* ssid="test";
const char* passwd="12345678";
void ROOT(void)
{
esp8266_sever.send(200,"text/plain","hahahahah");
}
void notroot(void)
{
esp8266_sever.send(200,"text/plain","not found");
}
void setup() {
Serial.begin(9600);
WiFi.softAP(ssid,passwd);
Serial.print(WiFi.localIP());
esp8266_sever.begin();
esp8266_sever.on("/",ROOT);
esp8266_sever.onNotFound(notroot);
Serial.print("OK");

}

void loop() {
esp8266_sever.handleClient();

}`