java.io.StreamCorruptedException:无效的流头:54657374
我正在尝试读取使用套接字程序从客户端发送的字符串,代码如下:java.io.StreamCorruptedException:无效的流头:54657374,java,Java,我正在尝试读取使用套接字程序从客户端发送的字符串,代码如下: import java.io.IOException; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import java.lang.ClassNotFoundException; import java.net.ServerSocket; import java.net.Socket; public class SocketServerE
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.lang.ClassNotFoundException;
import java.net.ServerSocket;
import java.net.Socket;
public class SocketServerExample {
//static ServerSocket variable
private static ServerSocket server;
//socket server port on which it will listen
private static int port = 5000;
public static void main(String args[]) throws IOException, ClassNotFoundException{
//create the socket server object
server = new ServerSocket(port);
//keep listens indefinitely until receives 'exit' call or program terminates
while(true){
System.out.println("Waiting for client request");
//creating socket and waiting for client connection
Socket socket = server.accept();
//read from socket to ObjectInputStream object
ObjectInputStream ois = new ObjectInputStream(socket.getInputStream());
//convert ObjectInputStream object to String
String message = (String) ois.readObject();
System.out.println("Message Received: " + message);
//create ObjectOutputStream object
ObjectOutputStream oos = new ObjectOutputStream(socket.getOutputStream());
//write object to Socket
oos.writeObject("Hi Client "+message);
//close resources
ois.close();
oos.close();
socket.close();
//terminate the server if client sends exit request
if(message.equalsIgnoreCase("exit")) break;
}
System.out.println("Shutting down Socket server!!");
//close the ServerSocket object
server.close();
}
}
但在从客户端读取字符串时,我得到如下错误:
Exception in thread "main" java.io.StreamCorruptedException: invalid stream header: 54657374
at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:803)
at java.io.ObjectInputStream.<init>(ObjectInputStream.java:298)
at SocketServerExample.main(SocketServerExample.java:29)
线程“main”java.io.StreamCorruptedException中的异常:无效流头:54657374
位于java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:803)
位于java.io.ObjectInputStream。(ObjectInputStream.java:298)
位于SocketServerExample.main(SocketServerExample.java:29)
我搜索了一下,没能找到这个bug。请帮助我。您不能指望
ObjectInputStream
自动将文本转换为对象。十六进制的54657374
是“Test”
文本。您必须以字节的形式直接发送数据。显然,您并不是使用ObjectOutputStream:
发送数据,而是在写入字节
- 如果使用
读取,则必须使用readObject()
writeObject()进行写入。
- 如果使用
读取,则必须使用readUTF()
writeUTF()进行写入。
- 如果使用
读取,则必须使用readXXX()
写入XXX的大多数值writeXXX(),
“Test”
,否则不会收到此错误。您好,我正在将字节直接从我的cpp客户端发送到java服务器。在这种情况下如何阅读?iResult=send(ConnectSocket,sendbuf,(int)strlen(sendbuf),0);--用于发送的cpp客户端代码。@Haramoz您还应该发送长度,否则每个流只能发送一条消息。我将使用ByteBuffer和本机有序数据阻塞NIO。