这只是我使用Java编写的非常简单的服务器/客户端应用程序,仅打算使用BufferedReader和BufferedWriter。启动服务器时,我没有收到任何错误消息。
但是,当客户端尝试向服务器发送消息时:
java.net.SocketException:连接重置
出现。我不知道为什么会发生这种情况,但我认为它可能必须与BufferedWriter做一些事情。我在Internet上进行了搜索,但没有找到任何针对此的有用信息。
Server.java
import java.io.*;
import java.net.*;
public class Server {
public Server(int port) {
try {
ServerSocket seso = new ServerSocket(port);
System.out.println("Server started");
System.out.println("Server listening on port " + port);
Socket client1 = seso.accept();
BufferedReader reader = new BufferedReader(new InputStreamReader(client1.getInputStream(), "UTF-8"));
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(client1.getOutputStream(), "UTF-8"));
String s = null;
while((s = reader.readLine()) != null) {
System.out.println("Client: " + s);
}
writer.close();
reader.close();
} catch (Exception e) {e.printStackTrace();}
}
public static void main(String args[]) {
new Server(4444);
}
}
Client.java
import java.io.*;
import java.net.*;
public class Client {
public Client(String serverip) {
try {
Socket client = new Socket(serverip, 4444);
System.out.println("Client connected with: " + serverip);
BufferedReader reader = new BufferedReader(new InputStreamReader(client.getInputStream(), "UTF-8"));
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(client.getOutputStream(), "UTF-8"));
writer.write("Hello Server");
writer.flush();
}catch(Exception e){e.printStackTrace();}
}
public static void main(String args[]) {
new Client("localhost");
}
}
并且当我运行服务器后跟客户端时,我是从控制台获得的:
Server started
Server listening on port 4444
java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(SocketInputStream.java:209)
at java.net.SocketInputStream.read(SocketInputStream.java:141)
at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:284)
at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:326)
at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178)
at java.io.InputStreamReader.read(InputStreamReader.java:184)
at java.io.BufferedReader.fill(BufferedReader.java:161)
at java.io.BufferedReader.readLine(BufferedReader.java:324)
at java.io.BufferedReader.readLine(BufferedReader.java:389)
at Server.<init>(Server.java:24)
at Server.main(Server.java:33)
BUILD SUCCESSFUL (total time: 9 seconds)
如果我添加:
writer.newLine();
之后
writer.write("Hello Server");
在Client.java中我仍然得到:
Server started
Server listening on port 4444
Client: Hello Server
java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(SocketInputStream.java:209)
at java.net.SocketInputStream.read(SocketInputStream.java:141)
at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:284)
at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:326)
at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178)
at java.io.InputStreamReader.read(InputStreamReader.java:184)
at java.io.BufferedReader.fill(BufferedReader.java:161)
at java.io.BufferedReader.readLine(BufferedReader.java:324)
at java.io.BufferedReader.readLine(BufferedReader.java:389)
at Server.<init>(Server.java:24)
at Server.main(Server.java:33)
BUILD SUCCESSFUL (total time: 2 seconds)
刷新后必须关闭编写器