Question

用java的Socket写的流服务端接收不到客户端发送的信息。

import java.net.*;
import java.io.*;

public class TCPServer
{
public static void main(String args[])throws Exception{
ServerSocket server=new ServerSocket(30011);
Socket client=server.accept();
String ip=cilent.getInetAddress().getHostAddress();
System.out.println(ip+"...Contected");
BufferedReader bufIn=new BufferedReader(new InputStreamReader(client.getInputStream()));
BufferedWriter bufOut=new BufferedWriter(new OutputStreamWriter(client.getOutputStream()));
String line=null;
while((line=bufIn.readLine())!=null){
System.out.println(line);
bufOut.write(line.toUpperCase());
bufOut.newLine();
}
client.close();
}
}

——————————————————————————————————————————

import java.net.*;
import java.io.*;

public class TCPClient
{
public static void main(String args[])throws Exception{
Socket client;
try{
client=new Socket("localhost",30011);
}catch(Exception e ){
throw new RuntimeException("Cilent contection feild");
}
BufferedReader bufr=new BufferedReader(new InputStreamReader(System.in));
BufferedReader bufIn=new BufferedReader(new InputStreamReader(client.getInputStream()));
BufferedWriter bufOut=new BufferedWriter(new OutputStreamWriter(client.getOutputStream()));
String line=null;
while((line=bufr.readLine())!=null){
bufOut.write(line);
bufOut.newLine();
System.out.println("Sent to server");
String data=bufIn.readLine();
System.out.println("Server: "+data);
}
bufr.close();
client.close();
}
}

Answer 1

输出流写的方式不一致，输入流用的是readLine.是读带换行符的数据，而你的输出流是write，把write改成writeL¡ne就行了吧。

追问

BufferedWriter好像没有writeLine吧。

Answer 2

//在server “写东西”的 while 外边，加上个flush。其他的不变。试一试。
while((line=bufIn.readLine())!=null){
System.out.println(line);
bufOut.write(line.toUpperCase());
bufOut.newLine();
}
bufOut.flush();//清空缓冲区。

追问

还是不行

Answer 3

没出什么问题。把localhost 改为127.0.0.1试试

追问

还是不行