SpringBoot實現TCP連接并進行數據互傳的方法

更新時間：2025年01月10日 14:56:38 作者：liaozk_c

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application.yml

tcp:
  server:
    ip: 192.168.173.25
    port: 20140
server:
  port: 6000

TcpDataSenderController

import com.example.tcpclient.utils.TcpClientUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
/**
 * tcp接口
 */
@RestController
@RequestMapping("/tcp")
public class TcpDataSenderController {
    private final TcpClientUtil tcpClientUtil;
    @Autowired
    public TcpDataSenderController(TcpClientUtil tcpClientUtil) {
        this.tcpClientUtil = tcpClientUtil;
    }
    /**
     * 連接
     * @return
     */
    @GetMapping("/connect")
    public boolean connect() {
        return tcpClientUtil.connect();
    }
    /**
     * 斷開連接
     * @return
     */
    @GetMapping("/disconnect")
    public boolean disconnect() {
        return tcpClientUtil.disconnect();
    }
    /**
     * 發(fā)送數據
     * @param data
     * @return
     */
    @GetMapping("/send")
    public boolean send(@RequestParam("data") String data) {
        return tcpClientUtil.sendData(data);
    }
    /**
     * 發(fā)送數據(有返回數據)
     * @param data
     * @return
     */
    @GetMapping("/sendData")
    public String sendDataToServer(@RequestParam("data") String data) {
        return tcpClientUtil.sendDataToServer(data);
    }
    /**
     * 獲取連接狀態(tài)
     * @return
     */
    @GetMapping("/status")
    public boolean status() {
        return tcpClientUtil.isConnected();
    }
}

TcpClientUtil

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.Socket;
import java.nio.charset.StandardCharsets;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
@Component
public class TcpClientUtil {
    private static final Logger logger = LoggerFactory.getLogger(TcpClientUtil.class);
    @Value("${tcp.server.ip}")
    private String tcpServerIp;
    @Value("${tcp.server.port}")
    private int tcpServerPort;
    private Socket socket;
    private OutputStream outputStream;
    private Lock lock = new ReentrantLock();
    private boolean isConnected = false;
    public boolean connect() {
        lock.lock();
        try {
            if (!isConnected) {
                socket = new Socket(tcpServerIp, tcpServerPort);
                outputStream = socket.getOutputStream();
                isConnected = true;
                return true;
            }
            return false;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        } finally {
            lock.unlock();
        }
    }
    public boolean disconnect() {
        lock.lock();
        try {
            if (isConnected) {
                if (outputStream != null) {
                    try {
                        outputStream.close();
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }
                if (socket != null) {
                    try {
                        socket.close();
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }
                isConnected = false;
                return true;
            }
            return false;
        } finally {
            lock.unlock();
        }
    }
    public boolean sendData(String data) {
        lock.lock();
        try {
            if (isConnected) {
                byte[] bytes = data.getBytes();
                outputStream.write(bytes);
                outputStream.flush();
                return true;
            }
            return false;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        } finally {
            lock.unlock();
        }
    }
    public String sendDataToServer(String data) {
        lock.lock();
        try {
            if (isConnected) {
                BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
                // 發(fā)送數據到TCP服務器
                outputStream.write(data.getBytes(StandardCharsets.UTF_8));
                outputStream.flush();
                // 讀取服務器返回的數據（如果需要處理返回內容的話）
                String response = reader.readLine();
                if (response!= null) {
                    logger.info("從TCP服務器接收到的響應: {}", response);
                }
                return response;
            }
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        } finally {
            lock.unlock();
        }
        return null;
    }
    public boolean isConnected() {
        return isConnected;
    }
}

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