Question

我正在开发Android Studio中的项目。计划是通过Java（Eclipse）中的本地服务器将对象发送到在Android Studio中编程的移动应用程序。以下是服务器的代码：

public Server() {
    ServerSocket server = null;

    try {
        server = new ServerSocket(1010);
    } catch (IOException e) {
        e.printStackTrace();
    }

    ObjectOutputStream oos;
    try {
        while (true) {
            Socket s = server.accept();
            System.out.println("new client");
            oos = new ObjectOutputStream(s.getOutputStream());
            oos.writeObject(new Packet("Hi"));
            System.out.println("Objekt versendet");
            oos.flush();
            oos.close();
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
}

来自客户：

public Client() {
    Socket s = null;

    try {
        s = new Socket("localhost", 1010);
    } catch (IOException e) {
        e.printStackTrace();
    }

    try {
        ObjectInputStream ois = new ObjectInputStream(s.getInputStream());
        Object o;
        o = ois.readObject();
        Packet p = (Packet) o;

        System.out.println("[Von Server]: " + p.getS());
        s.close();
    } catch ( IOException | ClassNotFoundException e) {
        e.printStackTrace();
    }
}

当新客户端连接到服务器时，它应该向客户端发送一个数据包，包括名为＆＃34; hi＆＃34;的字符串。当我在Eclipse中启动服务器和客户端时，它工作正常。当我在Android Studio（VD）中启动客户端时，虽然Class Packet已存在，但此错误仍会出现：

ava.lang.ClassNotFoundException: Packet
W/System.err:     at java.lang.Class.classForName(Native Method)
W/System.err:     at java.lang.Class.forName(Class.java:324)
W/System.err:     at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:2258)
W/System.err:     at java.io.ObjectInputStream.readNewClassDesc(ObjectInputStream.java:1641)
W/System.err:     at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:657)
W/System.err:     at java.io.ObjectInputStream.readNewObject(ObjectInputStream.java:1782)
W/System.err:     at java.io.ObjectInputStream.readNonPrimitiveContent(ObjectInputStream.java:761)
W/System.err:     at java.io.ObjectInputStream.readObject(ObjectInputStream.java:1983)
W/System.err:     at java.io.ObjectInputStream.readObject(ObjectInputStream.java:1940)

在Android Studio中通过服务器/客户端连接发送和接收对象

0 个答案: