问题描述
我具有用于计算机（tcp客户端）和TCP Server（本地主机）之间通信的Spring Boot Application。我能够与一台机器/客户端通信，但是我无法与两台或更多机器通信。 因此，我启动了我的Spring Boot应用程序：
package com.example.workflow;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import java.io.IOException;
@SpringBootApplication
public class Application {
public static void main(String[] args) throws IOException {
Runnable serverZyklisch = new ServerZyklisch();
Runnable serverAzyklisch = new ServerAzyklisch();
for (int i = 0; i < 4; i++) {
new Thread(serverZyklisch).start();
new Thread(serverAzyklisch).start();
}
SpringApplication.run(Application.class);
}
}
我启动了不同的线程，以便客户端（例如10.50.12.174 = Press，10.50.12.204 = Drill）可以通过套接字连接连接到TCP Server。
我的ServerAzyklisch类是这样的：
package com.example.workflow;
import org.camunda.bpm.engine.delegate.DelegateExecution;
import org.camunda.bpm.engine.delegate.JavaDelegate;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;
public class ServerAzyklisch implements Runnable,JavaDelegate {
int count = 0;
private final ServerSocket ssocket;
static String param = StartTCPServersDelegate.parameter;
HexToByteConverter hexToByteConverter = new HexToByteConverter();
// 2 TCP Server starten Port 2000,Port 2001
public ServerAzyklisch(String Pparam) throws IOException {
ssocket = new ServerSocket(2000);
param = Pparam;
}
public ServerAzyklisch() throws IOException {
ssocket = new ServerSocket(2000);
}
public void run() {
byte[] buf = new byte[1];
System.out.println(param+"Paraaam");
InputStream in;
OutputStream out = null;
Socket socket = null;
//Thread immer aktiv
int n = 0;
while(true){
try {
// Wartet auf Socket Verbindung
System.out.println("Server is listening on port "+ ssocket.getLocalPort());
socket = ssocket.accept();
count++;
System.out.println("Countet clients: "+count);
socket.setSoLinger(true,1000);
System.out.println("Sockeport: "+socket.getLocalPort());
System.out.println("Connection from " + socket.getInetAddress().toString());
//Inputstream
in = socket.getInputStream();
//Outputstream
out = socket.getOutputStream();
//Datenpuffer deklarieren (anlegen)
byte []data = new byte[132];
byte[]Pressen1hexdump110 = hexToByteConverter.hexStringToByteArray("33333333003d0064000600000004004001c9c78900010000006e0000000000000000000000000001000000000014000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"+param);
byte[]Pressen2hexdump = hexToByteConverter.hexStringToByteArray("3333333300400065000a00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000");
byte[]Pressen3hexdump = hexToByteConverter.hexStringToByteArray("3333333300400065001400000000004001c9c6e900010000006e000000000000000000000000000100000000001e00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000");
in.read(buf);
while (buf[0] != -1) {
out.write(Pressen1hexdump110);
out.write(Pressen2hexdump);
out.write(Pressen3hexdump);
}
} catch (IOException e) {
e.printStackTrace();
}catch (Exception e) {
e.printStackTrace();
}
}
}
@Override
public void execute(DelegateExecution delegateExecution) throws IOException {
}
}
现在，我想将其他类中的“ while循环”（带有out.write）外包，以使用与ServerAzyklisch run方法中的Socket连接。
因此，我编写了一个类Presse.java
package com.example.workflow;
import org.camunda.bpm.engine.delegate.DelegateExecution;
import org.camunda.bpm.engine.delegate.JavaDelegate;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;
public class Presse implements JavaDelegate {
ServerSocket ssocket;
private HexToByteConverter hexToByteConverter = new HexToByteConverter();
Socket socket;
InputStream in;
OutputStream out;
byte[]Pressen1hexdump110 = hexToByteConverter.hexStringToByteArray("33333333003d0064000600000004004001c9c78900010000006e00000000000000000000000000010000000000140000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005");
byte[]Pressen2hexdump = hexToByteConverter.hexStringToByteArray("3333333300400065000a00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000");
byte[]Pressen3hexdump = hexToByteConverter.hexStringToByteArray("3333333300400065001400000000004001c9c6e900010000006e000000000000000000000000000100000000001e00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000");
public Presse() throws IOException {
ssocket = new ServerSocket(2000);
socket = ssocket.accept();
//Inputstream
in = socket.getInputStream();
//Outputstream
out = socket.getOutputStream();
}
public void sendMessage(InputStream in,OutputStream out,byte[]message) throws IOException {
out.write(Pressen1hexdump110);
out.write(Pressen2hexdump);
out.write(Pressen3hexdump);
socket.close();
}
@Override
public void execute(DelegateExecution delegateExecution) throws Exception {
PostRequestDelegate postRequestDelegate = new PostRequestDelegate();
postRequestDelegate.post();
}
}
我想从此类发送3条消息，就像ServerAzyklisch类一样。但这会引发错误，因为：
Caused by: java.net.BindException: Address already in use: NET_Bind
我知道这是因为我是第二次做Socket.accept了，但是我不明白如何才能做到这一点。我必须关闭套接字连接吗？如果是，在哪里以及使用哪个Java命令？
解决方法
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