JAVAsocket调用次数过多
我正在尝试实现一个ServerSocket,但我无法理解,如果我关闭连接,为什么代码会被调用3次。这是我的密码:
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import static java.lang.System.out;
public class Main {
public static void main(String[] args) throws IOException {
int port = 8080;
ServerSocket serverSocket = new ServerSocket(port);
out.println("Listening ..");
while(true){
Socket socket = serverSocket.accept();
out.println("Connected" + socket.getLocalAddress());
new Thread(new MultiThreadServer(socket)).start();
}
}
}
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.Socket;
import static java.lang.System.out;
public class MultiThreadServer implements Runnable{
Socket clientSocket;
MultiThreadServer(Socket clientSocket){ this.clientSocket = clientSocket;};
@Override
public void run() {
try{
out.println("inside thread");
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(this.clientSocket.getInputStream()));
String request = bufferedReader.readLine();
out.println("request: " + request);
bufferedReader.close();
this.clientSocket.close(); //Without this line, the code is only called once
}catch(IOException e){
out.println(e);
}
}
}
因此,通过调用clientSocket上的close()方法,将调用内部调用的“while(true)”3次,而不调用该方法,将调用一次。 这是带有socket的日志。close():
Listening ..
Connected/0:0:0:0:0:0:0:1
inside thread
request: GET /tttes HTTP/1.1
Connected/0:0:0:0:0:0:0:1
inside thread
request: GET /tttes HTTP/1.1
Connected/0:0:0:0:0:0:0:1
inside thread
request: GET /tttes HTTP/1.1
这是没有socket的日志。close():
Listening ..
Connected/0:0:0:0:0:0:0:1
inside thread
request: GET /tttes HTTP/1.1
# 1 楼答案
更有可能的情况是,您的客户端正在等待来自服务器的数据,并且在上一次连接关闭之前不会尝试再次连接。这可以解释你看到的行为
如果您有多个并发客户端,一个连接不知道您不会关闭一个不相关连接的连接