发送消息到服务器端,小弟我做了一个客户端发送消息到服务器端，socket能连接上，但发送不了数据，不知为什么...

Java code// 客户端TCPClient

import java.io.*;

import java.net.*;

import java.util.Scanner;

public class TCPClient {

private static int sort=3434;

private static String host="localhost"; //本机ip地址

public static void main(String avg[]){

Scanner input = new Scanner(System.in);

BufferedReader br=null;

BufferedWriter wr=null;

Socket s =null;

try{

while(true){

System.out.print("客户端说:");

String line = input.nextLine();

if(line.equals("byb")) break;

s=new Socket(TCPClient.host,TCPClient.sort);

wr =new BufferedWriter(new OutputStreamWriter( s.getOutputStream()));

wr.write(line);

wr.close();

s.close(); //关闭会话

try { //暂停一会儿!

Thread.sleep(300);

} catch (InterruptedException e) {

e.printStackTrace();

}

s=new Socket(TCPClient.host,TCPClient.sort);

br =new BufferedReader(new InputStreamReader( s.getInputStream()));

System.out.print("接收端:");

int next=0;

StringBuffer li=new StringBuffer();

while((next=br.read()) != -1) li.append((char)next);

System.out.println(new String(li.toString()));

br.close();

s.close(); 关闭会话!

}

}catch(UnknownHostException e){

System.out.println("服务器连接失败");

e.printStackTrace();

}catch(IOException e){

e.printStackTrace();

}

}

}

------解决方案--------------------

wr.write(line);后面加wr.flush();