每次从客户端连接到服务器时,客户端都会向服务器发送字符串消息“11”,并且当服务器收到字符串消息“11”时,它会运行count ++。然后出现了两个连接,它应该使计数++的count = 2运行两次,但是当客户端连接时,我检查了它并且客户端正确地向服务器发送了字符串消息“11”,但计数保持为1并且永远不会输入if(count == 2)块。一直在测试和寻找小时,但似乎无法找到问题。请帮忙!谢谢为什么我的计数++在Thread类的run()方法中重置?
客户端的代码片段:
Socket s = new Socket(hostname, port); // Plug in the socket to connect to the server
pw = new PrintWriter(s.getOutputStream()); //Instance of sending it out
BufferedReader br = new BufferedReader(new InputStreamReader(s.getInputStream()));
public void run() { //Deal with reading from server and print them out
try {
pw.println("11"); //Sends the message when connection is made to the server
pw.flush();
} catch (Exception e) {
e.printStackTrace();
}
try{
while(true){
String line = br.readLine(); //Read in the message from server
if(line.equals("12")){ //When finally receives the string message "12" from server
button.setBackground(Color.white);
button.addActionListener(sl);
}
int update = Integer.parseInt(line);
if(update < 10){
current-= update;
}
}
} catch (IOException ioe){
System.out.println("ioe in ChatClient.run: " + ioe.getMessage());
}
}
Server线程的代码片段:
PrintWriter pw = new PrintWriter(s.getOutputStream());
public void run(){
try{
BufferedReader br = new BufferedReader(new InputStreamReader(s.getInputStream()));
while(true){
String line = br.readLine(); //blocking //Keep reading in messages
if(line.equals("11")){ //Tested it out and does receive "11" whenever a client connects and prints out "11"
count++; //But the problem is count stays as 1 every time it connects and never becomes 2
System.out.println(line);
System.out.println(count);
}
if(count == 2){ //Never able to reach inside this block of code
pw.println("12");
pw.flush();
count++;
}
}
} catch(IOException ioe){
System.out.println("ioe in ChatTHread: " + ioe.getMessage());
}
}
编辑 - 服务器代码:
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Scanner;
import java.util.Vector;
public class Server {
private int count = 0;
private Vector<FFThread> ctVector = new Vector<FFThread>(); //Parametrized
public Server(int port){
try{
ServerSocket ss = new ServerSocket(port); //Server socket to connect to the port
while(true){
Socket s = ss.accept(); // Listens for a connection to be made to this "s" socket and accepts it.
FFThread ct = new FFThread(s, this); //Get new socket access thread
ctVector.add(ct); //Appends the specified element "ct" to the end of this Vector.
ct.start();
}
} catch(IOException ioe){
System.out.println("ioe in ChatServer: " + ioe.getMessage());
}
}
public int counter(){
this.count = 0;
count++;
return count;
}
public void sendMessage(String message, FFThread ct){
for(FFThread c : ctVector){
if(!c.equals(ct)){ //Two different clients
c.sendMessage(message);
}
}
}
public void removeThread(FFThread ct){
ctVector.remove(ct);
}
public static void main(String [] args){
Scanner scan = new Scanner(System.in);
System.out.print("What port? ");
int port = scan.nextInt();
new Server(port);
}
}
编辑 - 服务器的线程类:
import java.awt.List;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
import java.util.ArrayList;
public class FFThread extends Thread {
private Socket s;
private Server cs;
private PrintWriter pw;
private int count = 0;
boolean ready = false;
public FFThread(Socket s, Server cs){
this.s = s;
this.cs = cs;
try{
this.pw = new PrintWriter(s.getOutputStream()); //Set up to send messages to clients
} catch(IOException ioe){
System.out.println("ioe in ChatThread constructor: " + ioe.getMessage());
}
}
检查变量'line'的长度是否为2,因为比较可能始终为false,因此不会增加'count'。例如:“11”不等于“11”。 – SkyMaster 2014-11-03 06:52:01
尝试添加“其他”块,看看你的假设是否正确。使用IDE进行调试也很有用。 – Jayan 2014-11-03 06:54:12
@JoseLuis这似乎不是问题,因为我用System.out.println(line)和System.out.println(count)对它进行了测试,并且它们是用字符串“11”打印出来的,但是伯爵总是保持1,证明他们能够进入if区块。 – 2014-11-03 07:07:41