我是开发Java应用程序的初学者。我正在Android上创建一个聊天应用程序。我使用一个线程来服务客户端,但是当客户端连接到服务器时,我无法检索到套接字中包含的数据,但是当客户端连接丢失时,可以显示数据。我使用ReadLine方法从套接字读取数据。 这是在服务器侧的程序代码:无法从套接字中检索数据
package server;
import java.net.*;
import java.io.*;
import java.util.Vector;
import com.sun.org.apache.bcel.internal.generic.NEW;
public class Server {
public static void main(String[] args)throws IOException, InstantiationException,
IllegalAccessException {
ServerSocket servsocket = null;
Socket sock = null;
byte[] bytebuffer = new byte[512];
try {
System.out.println("SERVER IS RUNNING...");
servsocket = new ServerSocket(28000);
while(true){
sock = servsocket.accept();
System.out.println(servsocket.isBound());
System.out.println("Port "+servsocket+" Ready!!!");
System.out.println("Accept connection requests from " + sock);
System.out.println("From CLIENT "+sock.getInetAddress()+ " and PORT " +
sock.getPort());
ChatThread thread = new ChatThread(sock);
System.out.println("Thread is running");
thread.run();
}
} catch (IOException ioe) {
System.out.println(ioe);
}
finally{
try {
servsocket.close();
} catch (IOException ioe) {
System.out.println(ioe);
}
}
}
}
class ChatThread extends Thread{
static Vector<ChatThread> chatthread = new Vector<ChatThread>(10);
private Socket sock;
private BufferedReader in ;
private PrintWriter out;
public ChatThread (Socket socket) throws IOException {
this.sock = socket;
in = new BufferedReader(
new InputStreamReader(socket.getInputStream()));
out = new PrintWriter(
new OutputStreamWriter(socket.getOutputStream()));
byte[] bytebuffer = new byte[512];
int receivemssg;
}
public void run(){
int recvMsgSize;
byte[] bytebuffer = new byte[512];
String readsocket;
try {
readsocket = in.readLine();
} catch (IOException e) {
e.printStackTrace();
}
}
}
下面在服务器侧的显示在程序启动时。我试图从客户端发送“Hello ....”一词。可以看出线程没有运行。
服务器正在运行... 真正 端口的ServerSocket [地址= 0.0.0.0/0.0.0.0,端口= 0,将localPort = 28000]就绪! 接受连接请求fromSocket [ADDR =/172.17.231.254,端口= 3567,将localPort = 28000] 从客户/172.17.231.254和PORT 3567 线程运行...
当我替换readline方法上的使用getInputStream线程可以从客户端运行线程并显示消息。这是我进入线程来替换我以前使用的readline方法的代码。
public ChatThread (Socket socket) throws IOException {
this.sock = socket;
in = sock.getInputStream();
out = sock.getOutputStream();
byte[] bytebuffer = new byte[512];
int receivemssg;
}
public void run(){
int recvMsgSize;
byte[] bytebuffer = new byte[512];
System.out.println("Thread is Running...");
String masuk = new String(bytebuffer);
System.out.println(bytebuffer);
System.out.println(in.toString());
System.out.println("thread successfully executed !!!");
synchronized (chatthread) {
chatthread.addElement(this);
}
try {
while ((recvMsgSize = in.read(bytebuffer)) != -1) {
out.write(bytebuffer, 0, recvMsgSize);
System.out.println("The length of a character is received and returned "+bytebuffer.length);
}
} catch (IOException e) {
System.out.println(e);
}
}
}
但接下来的问题是,我不能让一个插座的内容出现如下字符串/文字:
端口的ServerSocket [地址= 0.0.0.0/0.0.0.0,端口= 0,localport = 28000] Siap !!! 接受连接请求fromSocket [ADDR =/172.17.231.254,端口= 3577,将localPort = 28000] 从客户/172.17.231.254和PORT 3577 线程运行... [B @ 7c6768 java.net.SocketInputStream @ 1690726 线程成功执行!!! 字符的长度接收并返回512
请帮助我,谢谢:) GBU家伙...
感谢您的回复,非常有帮助:) –