Java无法充当服务的客户端

Question

所以我在JDeveloper上创建了一个带有套接字适配器的服务，其中读取了一条消息。我已按照以下链接中提到的步骤进行操作：https://shrikworld.blogspot.com/2014/11/demystifying-oracle-socket-adapter.html但问题是，当我创建java类来测试服务时，我收到错误。

我一直试图弄清楚问题是什么，但我找不到任何有用的东西。以下是我的weblogic控制台中SocketAdapter的说明：

Host: localhost
KeepAlive: true
EnableSDP: false
backlogQueue: 0
port: 12110
SSLEnable: false
NeedClientAuthentication: false
Timeout: 1000

这是我的java类：

import java.io.BufferedReader;
import java.io.IOException;

import java.io.InputStreamReader;
import java.io.OutputStream;

import java.net.Socket;

public class Client {
    public static void main(String[] args) {
        try {
            Socket socket;
            final String HOST = "localhost";
            final int PORT = 12110;
            try {
                socket = new Socket(HOST, PORT);
            } catch (IOException ioe) {
                System.out.println(">>>");
                System.out.println(ioe.getMessage());
                System.out.println(">>>");
                throw ioe;
            }
            System.out.println("sending data: EmpDetails;");
            OutputStream os = socket.getOutputStream();
            byte[] b = "fn111111ln111111232007-01-01100\nfn211111ln211111232007-11-01200\nfn311111ln311111232007-12-01300".getBytes();
            for (int i = 0; i < b.length; i++) {
                os.write(b[i]);
            }
            os.flush();
            socket.shutdownOutput();
            System.out.println("receiving data");
            BufferedReader soc_in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
            String successCode = soc_in.readLine();
            System.out.println("Success Code: " + successCode);
            socket.close();
        } catch (IOException ioe) {
            ioe.printStackTrace();
        }
    }
}

这是我尝试运行代码时遇到的错误：

java.net.ConnectException: Connection refused: connect
    at java.net.DualStackPlainSocketImpl.connect0(Native Method)
    at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79)
    at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
    at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
    at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
    at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
    at java.net.Socket.connect(Socket.java:589)
    at java.net.Socket.connect(Socket.java:538)
    at java.net.Socket.<init>(Socket.java:434)
    at java.net.Socket.<init>(Socket.java:211)
    at SocketAdapter.Client.main(Client.java:18)

Answer 1

而不是将HOST作为静态字符串，

socket = new Socket(HOST, PORT)

尝试动态使用，

socket = new Socket(InetAddress.getLocalHost().getHostName(), PORT);

以上应该将本地/专用网络IP地址作为主机。