import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;

public class Main extends Thread {
    private static final int PORT = 25052;
    private static ServerSocket serverSocket; // 建立服务端口
    public Service(int port) throws  Exception{
        serverSocket = new ServerSocket(port);
        serverSocket.setSoTimeout(100000); // 设置连接超时
        System.out.println("初始化完成...");
    }

    public void run(){
        Socket socket = null;
        try {
            while(true){
                // 获取连接过来的客户端对象 阻塞方式
                socket = serverSocket.accept();
                System.out.println("客户端: "+socket.getInetAddress().getHostAddress());
                // 创建输入流，读取客户端数据
                InputStream inputStream = socket.getInputStream();

                // 持续接收消息
                while(true){
                    // 接收
                    InputStreamReader inRead = new InputStreamReader(inputStream);
                    BufferedReader br = new BufferedReader(inRead);
                    String message = br.readLine();
                    System.out.println("来自客户端数据： "+ message);

                }
            }
        }catch (Exception e){
            e.printStackTrace();
        }finally {// 释放
            try{

                socket.close();
                serverSocket.close();

            }catch (IOException e){
                e.printStackTrace();
            }
        }
    }

    public static void main(String[] args) throws Exception {
        Service ser = new Service(Service.PORT);
        ser.start();
    }
}

#include <ESP8266WiFi.h>

const char* ssid     = "TP-LINK_0A1F";//无线名称
const char* password = "873010963";//无线密码

const char* host = "192.168.1.103";
const int httpPort = 25052;
WiFiClient client; // 声明一个客户端对象与服务器进行连接


void setup() {
    Serial.begin(115200);
    Serial.println();
    
    
    WiFi.mode(WIFI_STA);
    WiFi.begin(ssid, password);
    while (WiFi.status() != WL_CONNECTED) {
      delay(500);
      Serial.print(".");
    }
    Serial.println("WiFi 连接成功 ");
    Serial.print("IP: ");
    Serial.println(WiFi.localIP());
}


void loop() {
      Serial.println("> 开始尝试访问服务器");
      if(client.connect(host,httpPort )){ // 尝试访问目标地址
          Serial.println("访问成功");
          client.print("Hi...!"); // 向服务器发送数据
          while(client.connected() || client.available()){
            if(client.available()){ // 如果有数据
              String line = client.readStringUntil('\n');
              Serial.println(line);
            }  
          }
      }else{
        Serial.println("访问失败");
        client.stop(); // 关闭客户端  
      }
      delay(3000);
}

#include <ESP8266WiFi.h>

const char* ssid     = "TP-LINK_0A1F";//无线名称
const char* password = "873010963";//无线密码

const char* host = "www.itaolaity.com";
int httpPort = 80;

void setup() {
    Serial.begin(115200);
    Serial.println();
    
    
    WiFi.mode(WIFI_STA);
    WiFi.begin(ssid, password);
    while (WiFi.status() != WL_CONNECTED) {
      delay(500);
      Serial.print(".");
    }
    Serial.println("WiFi 连接成功 ");
    Serial.print("IP: ");
    Serial.println(WiFi.localIP());
}


void loop() {
      WiFiClient client; // 声明客户端对象
      
      Serial.println("> 开始尝试访问服务器");
      
      if(client.connect(host,httpPort )){ 
          Serial.println("访问成功");
          
          client.print(String("GET /") + " HTTP/1.1\r\n" +
                     "Host: " + host + "\r\n" +
                     "Connection: close\r\n" +
                     "\r\n");
                     
          while(client.connected() || client.available()){
            if(client.available()){ // 如果有数据
              String line = client.readStringUntil('\n');
              Serial.println(line);
            }  
          }
          client.stop(); 
          
      }else{
        Serial.println("访问失败");
        client.stop(); // 关闭客户端  
        return ;
      }

      delay(5000);
     
}