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我一直在試圖調試2小時，我無法解釋它。 我有一臺服務器和一個客戶端。 （服務器管理一些拍賣）。Java套接字 - 接收但未發送的內容！
會發生什麼：
客戶端請求的東西，服務器將數據發送回客戶端接收它就好了。
客戶端發送一些東西給服務器，服務器更新一些數據。
客戶端發出的第一時間（1），服務器發回更新 數據相同的請求，但客戶沒有收到新的更新數據，而是接收的舊數據（因爲它有它在
正在發送數據的第一個請求（1）只是一個Java Bean有兩個List-S 和代碼：
// CLIENT CLASS
// creates socket, sends and listens on the socket
// listening is done on a separate thread
public class ServerConnector {
private Socket socket = null;
private ObjectOutputStream out = null;
private Display display;
private ServerListener listener;
public ServerConnector(Display display) {
this.display = display;
try {
socket = new Socket("localhost",33333);
out = new ObjectOutputStream(socket.getOutputStream());
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
listener = new ServerListener(socket, display);
new Thread(listener).start();
}
public void sendRequest(Request request) {
try {
out.writeObject(request);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
class ServerListener implements Runnable {
private Socket socket;
private ObjectInputStream in = null;
private Display display;
public ServerListener(Socket socket,Display display) {
this.socket = socket;
this.display = display;
try {
in = new ObjectInputStream(socket.getInputStream());
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
@Override
public void run() {
Response response =null;
try {
while ((response = (Response)in.readObject()) != null) {
if (response.getCars().size() > 0) {
display.showAvailableCars(response.getCars());
}
if(response.getAucs().size() > 0) {
List<Auction> auctionz = response.getAucs();//HERE 1st time it gets the GOOD data, 2nd time should get UPDATED DATA but instead receives the OLD DATA (same as 1st time).
display.showOpenAuctions(auctionz);
}
response = null;
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
//CLIENT CLASS
// controls when something should be sent, and print out responses
public class Display {
Scanner console = new Scanner(System.in);
ServerConnector server = new ServerConnector(this);
List<Car> cars;
List<Auction> aucs;
public void show() {
int opt = 0;
System.out.println("1. Show available cars for auction.");
System.out.println("2. Show open auctions.");
opt = console.nextInt();
Request request = new Request();
if (opt == 1)
request.setRequest(Request.GET_CARS);
if (opt == 2) {
request.setRequest(Request.GET_OPEN_AUCTIONS);
}
server.sendRequest(request);
}
public void showAvailableCars(List<Car> cars) {
int i = 0;
for (Car c : cars){
i++;
System.out.println(i +". " + c.getMaker() + " " + c.getModel() + " price: " + c.getPrice());
}
System.out.println("Select car to open Auction for:");
int selectedCar = console.nextInt();
if (selectedCar != 0) {
if (selectedCar <= cars.size()) {
Request request= new Request();
request.setRequest(Request.OPEN_AUCTION);
Car c = cars.get(selectedCar-1);
request.setCar(c);
server.sendRequest(request);
}
}
show();
}
public void setCars(List<Car> cars) {
this.cars = cars;
}
public void showOpenAuctions(List<Auction> aucs2) {
int i = 0;
for (Auction auc : aucs2) {
i++;
System.out.println(i+ ". " + auc.getCar().getModel() + " " + auc.getCar().getMaker() + " last price: " + auc.getPrice());
}
System.out.println("You can now make offers");
System.out.println("Input auction number:");
int selectedAuction = 0;
selectedAuction = console.nextInt();
if (selectedAuction > 0 && selectedAuction <= aucs2.size()) {
System.out.println("Offer new price:");
int price = console.nextInt();
Request request= new Request();
request.setRequest(Request.MAKE_OFFER);
request.setAuctionId(aucs2.get(selectedAuction-1).getId());
request.setPrice(price);
server.sendRequest(request);
}
show();
}
public void setOpenAuctions(List<Auction> aucs2) {
this.aucs = aucs2;
}
}
// SERVER CLASS : send and receives
public class ClientManager implements Runnable {
private AuctionManager manager = new AuctionManagerImpl();
private Socket client;
private ObjectInputStream in = null;
private ObjectOutputStream out = null;
public ClientManager(Socket socket) {
this.client = socket;
try {
in = new ObjectInputStream(client.getInputStream());
out = new ObjectOutputStream(client.getOutputStream());
} catch(Exception e1) {
try {
e1.printStackTrace();
client.close();
}catch(Exception e) {
System.out.println(e.getMessage());
}
return;
}
}
@Override
public void run() {
Request req = null;
try {
while ((req = (Request)in.readObject()) != null) {
if (req.getRequest() != null) {
if (req.getRequest().equals(Request.GET_CARS)) {
Response response = new Response();
response.setCars(manager.getAvailableCars());
out.writeObject(response);
continue;
}
if (req.getRequest().equals(Request.OPEN_AUCTION)) {
manager.openAuction(req.getCar());
continue;
}
if (req.getRequest().equals(Request.GET_OPEN_AUCTIONS)) {
Response response = new Response();
response.setAucs(manager.getHoldedAuctions()); //this line ALWAYS sends to the client GOOD, UPDATED DATA
out.writeObject(response);
out.flush();
continue;
}
if (req.getRequest().equals(Request.MAKE_OFFER)) {
Auction auction = manager.getOpenAuction(req.getAuctionId());
manager.updateAuction(auction, req.getPrice(),client.getRemoteSocketAddress().toString());
continue;
}
}
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}