Java ObjectInputStream(socket.getInputStream());不起作用
Java ObjectInputStream(socket.getInputStream());不起作用,java,sockets,io,Java,Sockets,Io,我正在编写一个与服务器通信的类,但是当它试图在inputstream的帮助下构造ObjectInputStream时,程序被冻结了。没有例外,程序仍在运行,但挂起在尝试构造ObjectInputstream的行中 以下是我的问题所在方法的代码: @Override public void connect(String ip, int port) throws UnknownHostException, IOException { Socket socket = new Socket(ip
我正在编写一个与服务器通信的类,但是当它试图在inputstream的帮助下构造ObjectInputStream时,程序被冻结了。没有例外,程序仍在运行,但挂起在尝试构造ObjectInputstream的行中 以下是我的问题所在方法的代码:
@Override
public void connect(String ip, int port) throws UnknownHostException, IOException {
Socket socket = new Socket(ip, port);
out = new ObjectOutputStream(socket.getOutputStream());
InputStream is = socket.getInputStream();
in = new ObjectInputStream(is);
}
这是整个班级的代码:
package Client;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;
public class MessageStreamerImpl implements MessageStreamer {
ObjectOutputStream out;
ObjectInputStream in;
public MessageStreamerImpl(String ip, int port) throws UnknownHostException, IOException{
connect(ip, port);
}
public MessageStreamerImpl(){
}
@Override
public void send(Object message) throws IOException {
if(out == null) throw new IOException();
out.writeObject(message);
out.flush();
}
@Override
public Object receive() throws IOException{
try {
return in.readObject();
} catch (ClassNotFoundException e) {
throw new IOException();
}
}
@Override
public void connect(String ip, int port) throws UnknownHostException, IOException {
Socket socket = new Socket(ip, port);
out = new ObjectOutputStream(socket.getOutputStream());
InputStream is = socket.getInputStream();
in = new ObjectInputStream(is);
}
}
在浏览谷歌时,我发现了这个:。但是我仍然不知道如何解决这个问题,因为我的ObjectOutputStream构造函数在ObjectInputStream的构造函数之前
这是我的服务器代码,也许会有帮助;)
包服务器;
导入java.io.IOException;
导入java.io.ObjectInputStream;
导入java.io.ObjectOutputStream;
导入java.net.ServerSocket;
导入java.net.Socket;
导入java.net.SocketException;
导入java.util.ArrayList;
公共类服务器{
ArrayList clients=新的ArrayList();
公共服务器(int端口){
试一试{
ServerSocket mySocket=新的ServerSocket(端口);
waitForClients(mySocket);
}捕获(IOE异常){
System.out.println(“无法启动”);
e、 printStackTrace();
}
}
私有void waitForClients(ServerSocket mySocket){
while(true){
试一试{
System.out.println(“准备接收”);
Socket client=mySocket.accept();
客户。添加(客户);
System.out.println(client.getInetAddress().getHostAddress()+“连接到服务器”);
线程t=新线程(新ClientHandler(客户端));
t、 start();
}捕获(IOE异常){
//TODO自动生成的捕捉块
e、 printStackTrace();
}
}
}
公共无效shareToAll(对象ObjectToChare){
用于(套接字客户端:客户端){
对象输出流oos;
试一试{
oos=newObjectOutputStream(client.getOutputStream());
oos.writeObject(objectToSchare);
oos.close();
}捕获(IOE异常){
//TODO自动生成的捕捉块
e、 printStackTrace();
}
}
}
私有类ClientHandler实现Runnable{
插座客户端插座;
公共客户端句柄(套接字客户端套接字){
this.clientSocket=clientSocket;
}
@凌驾
公开募捐{
试一试{
ObjectInputStream ois=新的ObjectInputStream(clientSocket.getInputStream());
while(true){
试一试{
ois.readObject();
}捕获(ClassNotFoundException | IOException e){
//TODO自动生成的捕捉块
e、 printStackTrace();
}
}
}捕获(SocketException e){
System.out.println(clientSocket.getInetAddress().getHostAddress()+“已断开与服务器的连接”);
客户端。移除(clientSocket);
}捕获(IOE异常){
//TODO自动生成的捕捉块
e、 printStackTrace();
}
}
}
}
谢谢你的帮助,我找到了毛病。这是在服务器类上,它必须如下所示:
package Server;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.SocketException;
import java.util.ArrayList;
public class Server {
ArrayList<ObjectOutputStream> clientstreams = new ArrayList<ObjectOutputStream>();
public Server(int port){
try {
ServerSocket mySocket = new ServerSocket(port);
waitForClients(mySocket);
} catch (IOException e) {
System.out.println("Unable to start.");
e.printStackTrace();
}
}
private void waitForClients(ServerSocket mySocket) {
while(true){
try {
System.out.println("Ready to receive");
Socket client = mySocket.accept();
clientstreams.add(new ObjectOutputStream(client.getOutputStream()));
System.out.println(client.getInetAddress().getHostAddress()+" connected to the Server");
Thread t = new Thread(new ClientHandler(client));
t.start();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
public void shareToAll(Object objectToSchare){
for(ObjectOutputStream stream:clientstreams){
try {
stream.writeObject(objectToSchare);
stream.flush();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
private class ClientHandler implements Runnable{
Socket clientSocket;
public ClientHandler(Socket clientSocket){
this.clientSocket = clientSocket;
}
@Override
public void run() {
try {
ObjectInputStream ois = new ObjectInputStream(clientSocket.getInputStream());
while(true){
try {
ois.readObject();
} catch (ClassNotFoundException | IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}catch(SocketException e){
System.out.println(clientSocket.getInetAddress().getHostAddress()+" disconnected from the Server");
clientstreams.remove(clientSocket);
}catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
包服务器;
导入java.io.IOException;
导入java.io.ObjectInputStream;
导入java.io.ObjectOutputStream;
导入java.net.ServerSocket;
导入java.net.Socket;
导入java.net.SocketException;
导入java.util.ArrayList;
公共类服务器{
ArrayList clientstreams=新的ArrayList();
公共服务器(int端口){
试一试{
ServerSocket mySocket=新的ServerSocket(端口);
waitForClients(mySocket);
}捕获(IOE异常){
System.out.println(“无法启动”);
e、 printStackTrace();
}
}
私有void waitForClients(ServerSocket mySocket){
while(true){
试一试{
System.out.println(“准备接收”);
Socket client=mySocket.accept();
添加(新的ObjectOutputStream(client.getOutputStream());
System.out.println(client.getInetAddress().getHostAddress()+“连接到服务器”);
线程t=新线程(新ClientHandler(客户端));
t、 start();
}捕获(IOE异常){
//TODO自动生成的捕捉块
e、 printStackTrace();
}
}
}
公共无效shareToAll(对象ObjectToChare){
for(ObjectOutputStream:clientstreams){
试一试{
stream.writeObject(objectToSchare);
stream.flush();
}捕获(IOE异常){
//TODO自动生成的捕捉块
e、 printStackTrace();
}
}
}
私有类ClientHandler实现Runnable{
插座客户端插座;
公共客户端句柄(套接字客户端套接字){
this.clientSocket=clientSocket;
}
@凌驾
公开募捐{
试一试{
ObjectInputStream ois=新的ObjectInputStream(clientSocket.getInputStream());
while(true){
试一试{
ois.readObject();
}捕获(ClassNotFoundException | IOException e){
//TODO自动生成的捕捉块
e、 printStackTrace();
}
}
}捕获(SocketException e){
System.out.println(clientSocket.getInetAddress().getHostAddress()+“已断开与服务器的连接”);
clientstreams.remove(clientSocket);
}捕获(IOE异常){
//TODO自动生成的捕捉块
package Server;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.SocketException;
import java.util.ArrayList;
public class Server {
ArrayList<ObjectOutputStream> clientstreams = new ArrayList<ObjectOutputStream>();
public Server(int port){
try {
ServerSocket mySocket = new ServerSocket(port);
waitForClients(mySocket);
} catch (IOException e) {
System.out.println("Unable to start.");
e.printStackTrace();
}
}
private void waitForClients(ServerSocket mySocket) {
while(true){
try {
System.out.println("Ready to receive");
Socket client = mySocket.accept();
clientstreams.add(new ObjectOutputStream(client.getOutputStream()));
System.out.println(client.getInetAddress().getHostAddress()+" connected to the Server");
Thread t = new Thread(new ClientHandler(client));
t.start();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
public void shareToAll(Object objectToSchare){
for(ObjectOutputStream stream:clientstreams){
try {
stream.writeObject(objectToSchare);
stream.flush();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
private class ClientHandler implements Runnable{
Socket clientSocket;
public ClientHandler(Socket clientSocket){
this.clientSocket = clientSocket;
}
@Override
public void run() {
try {
ObjectInputStream ois = new ObjectInputStream(clientSocket.getInputStream());
while(true){
try {
ois.readObject();
} catch (ClassNotFoundException | IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}catch(SocketException e){
System.out.println(clientSocket.getInetAddress().getHostAddress()+" disconnected from the Server");
clientstreams.remove(clientSocket);
}catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}