我在尝试从客户端返回服务器时发送数据(它可能被视为一种POST,虽然我没有使用http)时得到java.io.EOFException
。
我的客户端源代码:
Socket clientSocket = new Socket(serverIpAddr, IConstant.ServerPort);
OutputStream out = clientSocket.getOutputStream();
out.write(dataByteArray);
out.flush();
if(out!=null)
out.close();
if(clientSocket!=null)
clientSocket.close();
我的服务器源代码:
try{
ServerSocket serverSocket = new ServerSocket(IConstant.ServerPort);
while(true)
{
Socket connectionSocket = serverSocket.accept();
ObjectInputStream ois = new ObjectInputStream(connectionSocket.getInputStream());
Object obj = ois.readObject();
byte[] bytes = (byte[])obj;
System.out.println("A notification has been received");
//process bytes
//...
}
} catch(IOException ex){
ex.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
这就是我如何构建我的dataByteArray
对象(其中PlayList
是一个实现java.io.Serializable的POJO):
private byte[] serializePlayList(PlayList playList) throws IOException{
ByteArrayOutputStream bos = new ByteArrayOutputStream();
byte[] byteArray = null;
ObjectOutput out = null;
try {
out = new ObjectOutputStream(bos);
out.writeObject(playList);
out.flush();
byteArray = bos.toByteArray();
} finally {
try {
bos.close();
} catch (IOException ex) {
}
}
return byteArray;
}
每当服务器尝试执行ois.readObject()
时,都会抛出java.io.EOFException
。有人可以解释一下原因吗?
答案 0 :(得分:0)
您应该在playList
中发送Object
:
客户端:
Socket clientSocket = new Socket(serverIpAddr, IConstant.ServerPort);
ObjectOutputStream out = new ObjectOutputStream(clientSocket.getOutputStream();
out.writeObject(playlist);
服务器:
ServerSocket serverSocket = new ServerSocket(IConstant.ServerPort);
Socket connectionSocket = serverSocket.accept();
ObjectInputStream ois = new ObjectInputStream(connectionSocket.getInputStream());
PlayList playList = (PlayList) ois.readObject();
答案 1 :(得分:0)
您可以使用线程并启动线程,即空间类中的线程
像这样:
public class receive extends Thread{
public Socket socket = null;
ObjectInputStream din = null;
data_socket respon = null ;
data_socket dtsk = new data_socket();
public receive(Socket skt) {
this.socket=skt;
}
@Override
public void run(){
try {
din = new ObjectInputStream(this.socket.getInputStream());
while(true){
respon=(data_socket)din.readObject();
switch(respon.action){
case "login" : this.check_login(); break;
case "afeef" : this.afeef();break;
default : System.out.println("unknow action");
}
}
} catch (IOException ex) {
System.out.println("::::::::::::::::::ERROR 1::::::::::::::::"+ex.toString());
System.out.println("You r Lost connect to server ");
System.exit(0);
} catch (ClassNotFoundException e) {
e.printStackTrace();
System.out.println("::::::::::::::::::ERROR 2::::::::::::::::"+e.getException());
}
}
答案 2 :(得分:-1)
我在尝试发送数据时收到
BLANK
不,你不是。您在尝试接收数据时获得了它。
您的发送代码没有意义。您应该将java.io.EOFException
对象直接序列化到现有的PlayList
,而不是所有这些带有ObjectOutputStream
的恶作剧和每个发送的新对象流。
因此,您应该将ByteArrayOutputStreams
的结果直接投射到readObject()
。
读取代码应循环直到PlayList
被捕获,这意味着对等方关闭了连接。
NB EOFException
和clientSocket
在您测试它们的点上不可能为空。