ESP07网络服务器无法访问是什么原因造成的？怎么解决？

我在访问网络服务器时遇到了问题。我尝试了在 IDE 中找到的所有示例以及来自 Internet 的大量内容。然而，我可以毫无问题地用 FDti 编程器烧写 ESP07。素描也开始了。它说 esp 已连接到路由器，但它没有显示任何内容（通过 IP 地址以及通过 mDNS 地址）并且它没有看到客户端。
那是我的示例代码：
代码：全选#include
#include
#include

#ifndef STASSID
#define STASSID "WLAN-8YZG83"
#define STAPSK  "*********"
#endif

const char* ssid = STASSID;
const char* password = STAPSK;

// TCP server at port 80 will respond to HTTP requests
WiFiServer server(80);

void setup(void) {
  Serial.begin(115200);

  // Connect to WiFi network
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);
  Serial.println("");

  // Wait for connection
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.print("Connected to ");
  Serial.println(ssid);
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());

  // Set up mDNS responder:
  // - first argument is the domain name, in this example
  //   the fully-qualified domain name is "esp8266.local"
  // - second argument is the IP address to advertise
  //   we send our IP address on the WiFi network
  if (!MDNS.begin("esp8266")) {
    Serial.println("Error setting up MDNS responder!");
    while (1) {
      delay(1000);
    }
  }
  Serial.println("mDNS responder started");

  // Start TCP (HTTP) server
  server.begin();
  Serial.println("TCP server started");

  // Add service to MDNS-SD
  MDNS.addService("http", "tcp", 80);
}

void loop(void) {

  MDNS.update();

  // Check if a client has connected
  WiFiClient client = server.available();
  if (!client) {
    return;
  }
  Serial.println("");
  Serial.println("New client");

  // Wait for data from client to become available
  while (client.connected() && !client.available()) {
    delay(1);
  }

  // Read the first line of HTTP request
  String req = client.readStringUntil('\r');

  // First line of HTTP request looks like "GET /path HTTP/1.1"
  // Retrieve the "/path" part by finding the spaces
  int addr_start = req.indexOf(' ');
  int addr_end = req.indexOf(' ', addr_start + 1);
  if (addr_start == -1 || addr_end == -1) {
    Serial.print("Invalid request: ");
    Serial.println(req);
    return;
  }
  req = req.substring(addr_start + 1, addr_end);
  Serial.print("Request: ");
  Serial.println(req);
  client.flush();

  String s;
  if (req == "/") {
    IPAddress ip = WiFi.localIP();
    String ipStr = String(ip[0]) + '.' + String(ip[1]) + '.' + String(ip[2]) + '.' + String(ip[3]);
    s = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n\r\nHello from ESP8266 at ";
    s += ipStr;
    s += "\r\n\r\n";
    Serial.println("Sending 200");
  } else {
    s = "HTTP/1.1 404 Not Found\r\n\r\n";
    Serial.println("Sending 404");
  }
  client.print(s);

  Serial.println("Done with client");
}


这是我的串行监视器输出：
代码：全选.......
Connected to WLAN-8YZG83
IP address: 192.168.2.113
mDNS responder started
TCP server started