收到错误“java.net.SocketException：连接重置”

Question

我正在学习 Java 中的套接字编程。我收到java.net.SocketException: Connection reset。

客户端代码

    package com.socket;

    import java.io.OutputStreamWriter;
    import java.io.PrintWriter;
    import java.net.Socket;

    public class ClientSock {

        public static void main(String[] args) throws Exception {

            Socket skt = new Socket("localhost", 8888);     
            String str = "Hello Server";
            OutputStreamWriter osw = new OutputStreamWriter(skt.getOutputStream()); 

            PrintWriter out = new PrintWriter(osw);
            osw.write(str);
            osw.flush();        
        }
    }

//Server Side Code:

    package com.socket;

    import java.io.BufferedReader;
    import java.io.InputStreamReader;
    import java.net.ServerSocket;
    import java.net.Socket;

    public class ServerSock {

        public static void main(String[] args) throws Exception {

            System.out.println("Server is Started");
            ServerSocket ss = new ServerSocket(8888);

            Socket s = ss.accept();

            BufferedReader br = new BufferedReader(new InputStreamReader(s.getInputStream()));
            String str = br.readLine();

            System.out.println("Client Says : " + str);         
        }
    }

这是我运行客户端代码后的控制台，我正在重置异常连接，我做错了什么？

 Server is Started
Exception in thread "main" java.net.SocketException: Connection reset
    at java.net.SocketInputStream.read(Unknown Source)
    at java.net.SocketInputStream.read(Unknown Source)
    at sun.nio.cs.StreamDecoder.readBytes(Unknown Source)
    at sun.nio.cs.StreamDecoder.implRead(Unknown Source)
    at sun.nio.cs.StreamDecoder.read(Unknown Source)
    at java.io.InputStreamReader.read(Unknown Source)
    at java.io.BufferedReader.fill(Unknown Source)
    at java.io.BufferedReader.readLine(Unknown Source)
    at java.io.BufferedReader.readLine(Unknown Source)
    at com.socket.ServerSock.main(ServerSock.java:19)

Answer 1

“线程“main”java.net.SocketException: Connection reset 中的异常是在对方没有调用close()的情况下被强行终止时发生的错误。

将此行添加到 ClientSock

skt.close();

我也向 ServerSock 推荐这个。

ss.close();

java.io.Closeable 实现对象必须调用close()。

Answer 2

您在“Hello Server”中忘记了“\n”。
阅读器无法获取完整行并引发此异常。