如何将数据从Java客户端发送到C ++服务器？ [英] How can I send data from a Java client to a C++ server?

问题描述

Java客户端可以使用TCP连接到C ++服务器。 Java客户端在Win7上。 C ++服务器在Linux上。

The Java client can connect to the C++ server using TCP. The Java client is on Win7. The C++ server is on Linux.

问题是我无法将数据成功发送到C ++服务器。 Java代码是：

The problem is I cannot send data successfully to the C++ server. The Java code is:

public static void main (String [] args ) throws IOException {
    Socket sock = new Socket("10.217.140.200",7000); 

    String id = "TEST";
    char encoding = 'a';

    ObjectOutputStream oos = new ObjectOutputStream(sock.getOutputStream());
    oos.flush();

    oos.writeObject(encoding);

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有用。记住删除 ObjectOutputStream oos = new ObjectOutputStream（sock.getOutputStream（））; 否则会输出4个字符到c ++服务器。

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After your kind helps, I now use outputstream and it works. Remember to delete the ObjectOutputStream oos = new ObjectOutputStream(sock.getOutputStream()); otherwise it will output 4 chars to c++ server.

推荐答案

您正在使用 ObjectOutputStream ，它 Java对象序列化。这不是（容易）跨语言移植。因为你只发送一个String，你不需要使用 ObjectOutputStream - 只需使用 OutputStream 返回从套接字。

You're using an ObjectOutputStream, which does Java object serialisation. This is not (easily) portable across languages. Since you're only sending a String, you don't need to use an ObjectOutputStream - just use the OutputStream returned from the socket.

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