wanghef 2015-05-03 02:55 采纳率: 50%
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为什么serversocket每次收到的消息都是一样的

请大家帮忙看看,为什么每次serversocket收到的信息都是一致的,如何解决。谢谢。
用户名1101密码1111
详细代码
package client;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.OutputStream;
import java.net.Socket;
import java.util.List;
import java.util.Scanner;

import cash.Cashier;
import warehouse.StoreKeeper;
import datas.Datas;
import datas.Goods;
import datas.User;

public class ClientDemo {

public static void main(String[] args) throws IOException {


    Scanner input = new Scanner(System.in);
    Socket socket = null;
    InputStream is = null;
    OutputStream os = null;
    ObjectOutputStream oos = null;
    ObjectInputStream ois = null;
    User user=null;
    // 登陆界面
    System.out.println("***********欢迎使用超市管理系统***********");
    System.out.println("1.登陆");
    System.out.println("2.退出系统");
    System.out.println("*****************请选择数字1/2*****************");
    int n = input.nextInt();
    if (n == 1) {

        do {
            socket = new Socket("localhost", 8800);
            is = socket.getInputStream();
            os = socket.getOutputStream();
            oos = new ObjectOutputStream(os);
            ois = new ObjectInputStream(is);

            try {
                /*
                 * 给用户赋值,用户名和密码
                 */
                user = new User();
                System.out.print("请输入用户名:");
                user.setName(input.next());
                System.out.print("请输入密码:");
                user.setPassword(input.next());
                // 写出对象
                oos.writeObject(user);
                /*
                 * 读取服务器返回的对象数据
                 */
                Datas datas = (Datas) ois.readObject();
                String msg = datas.getMsg();
                if (msg != null) {
                    System.out.println(msg);
                }
                user = datas.getUser();
                /*
                 * 判断是否是仓库管理员
                 */

                if (user != null) {

                    if (user.isAdmin()) {
                        StoreKeeper storeKeeper = new StoreKeeper();
                        System.out.println("*****欢迎登陆超市库存管理系统*****");
                        do {
                            storeKeeper.showMenu();
                            //Goods good=new Goods();
                            String choise=input.next();
                            datas.setChoose(choise);
                            oos.writeObject(datas);

                        } while(true);

                    } else {
                        Cashier cashier = new Cashier();
                        System.out.println("*****欢迎登陆超市收银系统*****");

                        cashier.showMenu();




                    }
                }

            } catch (ClassNotFoundException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } finally {
                ois.close();
                oos.close();
                is.close();
                os.close();
                socket.close();
            }
        } while (user == null);
    } else {
        System.exit(1);

    }
}
package server;

import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;

public class ServerDemo {

public static void main(String[] args) throws IOException {
    //服务端
    ServerSocket ss=new ServerSocket(8800);
    while(true){
        Socket socket=ss.accept();
        ServerThread st=new ServerThread(socket);
        st.start();
    }
}

}
package server;

import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.OutputStream;
import java.net.Socket;

import datas.Datas;
import datas.Goods;
import datas.User;

public class ServerThread extends Thread{
private Socket socket;
//利用构造方法进行初始化
public ServerThread(Socket socket) {
this.socket = socket;
}

public void run() {
    InputStream is = null;
    OutputStream os = null;
    ObjectInputStream ois = null;
    ObjectOutputStream oos = null;


    try {


        ServerBiz biz = new ServerBiz();


        is = socket.getInputStream();
        os = socket.getOutputStream();
        ois = new ObjectInputStream(is);
        oos = new ObjectOutputStream(os);
        User user = (User) ois.readObject();
        Datas datas = new Datas();
        //Goods good=null;
        user = biz.login(user);
        if (user != null) {
            datas.setUser(user);
            // datas.setMsg("登陆成功");
        } else {
            datas.setMsg("用户名或密码输入错误!登陆失败!");
        }
        oos.writeObject(datas);
        while(user!=null){

        datas=(Datas)ois.readObject();
        System.out.println(datas.getChoose());
        //System.out.println(datas.getGood().getGoodId());



        //oos.writeObject(datas);
        oos.flush();

        }


    } catch (ClassNotFoundException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } finally {

        try {
            oos.close();
            ois.close();
            os.close();
            is.close();
            socket.close();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}

}

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