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我試圖運行在Windows comman行代碼,並收到異常:在另一個命令行windwjava.net.ConnectException:連接被拒絕:連接發生
D:\dasi\java\javaLab>java ServerClient
java.net.ConnectException: Connection refused: connect
java.lang.StringIndexOutOfBoundsException: String index out of range: -2
D:\dasi\java\javaLab>
:
D:\dasi\java\javaLab>java SocketClient
java.net.ConnectException: Connection timed out: connect
D:\dasi\java\javaLab>
服務器代碼:
import java.io.*;
import java.net.*;
public class ServerClient {
public ServerClient(int port) {
Server server = new Server(port);
server.start();
Client client = new Client(port);
client.start();
}
public static void main(String[] args) {
ServerClient s1 = new ServerClient(7777);
}
}
class Server extends Thread {
int port;
ServerSocket server;
Socket socket;
DataOutputStream outStream = null;
DataInputStream inStream = null;
public Server(int poort) {
try {
this.port = port;
server = new ServerSocket(port);
}
catch(Exception e) {
System.out.println(e.toString());
}
}
public void run() {
try {
socket = server.accept();
outStream = new DataOutputStream(socket.getOutputStream());
inStream = new DataInputStream(socket.getInputStream());
System.out.println("server is ok, please continue!");
while(true) {
String str = inStream.readUTF();
System.out.println("The server receive String:"+str);
outStream.writeUTF(str);
}
}
catch(Exception e) {
System.out.println(e.toString());
}
}
}
class Client extends Thread {
int port;
Socket socket;
DataInputStream inStream = null;
DataOutputStream outStream = null;
public Client(int port) {
try {
this.port = port;
socket = new Socket(InetAddress.getLocalHost(),port);
inStream = new DataInputStream(socket.getInputStream());
outStream = new DataOutputStream(socket.getOutputStream());
System.out.println("client is ok, please continue!");
}
catch(Exception e) {
System.out.println(e.toString());
}
}
public void run() {
try {
while(true) {
byte[] b = new byte[1024];
String str = "";
int m = System.in.read(b);
str = new String(b,0,0,m-1);
outStream.writeUTF(str);
str = inStream.readUTF();
System.out.println("The client receive String:"+str);
}
}
catch(Exception e) {
System.out.println(e.toString());
}
}
}
客戶端代碼:
import java.net.*;
import java.io.*;
public class SocketClient {
Socket s = null;
DataInputStream inStream = null;
DataOutputStream outStream = null;
public SocketClient() {
try {
init();
waitData();
}
catch(Exception e) {
System.out.println(e.toString());
}
}
void init() throws Exception {
s=new Socket("10.15.43.216",8765);
inStream = new DataInputStream(s.getInputStream());
outStream = new DataOutputStream(s.getOutputStream());
s.setSoTimeout(3000);
}
void waitData() {
while(true) {
try {
String str = inStream.readUTF();
System.out.println("Client accept:" +str);
str = Integer.toString(Integer.parseInt(str)+1);
outStream.writeUTF(str);
}
catch(Exception e) {
System.out.println(e.toString());
break;
}
}
}
public static void main(String[] args) {
new SocketClient();
}
}
如果在我的代碼中存在任何錯誤,或者如果它是我的計算機端口導致問題,那麼我正在編程。因爲當我檢查我的計算機端口時,我沒有看到7777.當我發出命令netstat -nao |時findstr 7777,它什麼都沒有返回。
D:\dasi\java\javaLab>netstat -nao | findstr 7777
D:\dasi\java\javaLab>
如果是端口問題,那麼如何打開7777端口。 我是新手,請幫忙。非常感謝!
謝謝,更改我的服務器代碼中的錯誤後,我現在可以運行它。但對於客戶端,我仍然收到連接超時異常。 – Lily
將端口號8765更改爲7777後,仍然收到連接超時異常。 – Lily
@Lily註釋's.setSoTimeout(3000);'在** init方法**中。或者相當於與 關聯的InputStream上的read()調用,此Socket將僅阻塞3000ms。如果超時 到期,則引發** java.net.SocketTimeoutException **。 –