SOCKET收的到报文却发不出去 高手帮忙啊。。。

Question

SOC可以收到报文，但是调试的时候发现 
DataOutputStream  outToClient=new  DataOutputStream(soc.getOutputStream());
这里出现了 请问高手什么原因啊。。 
因为偶是穷人，所以没有什么分数，请大家原谅啊
高手救命啊。。
package bank;import java.io.*;
import java.net.*;/**
 * <p>Title: </p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2005</p>
 *
 * <p>Company: </p>
 *
 * @author not attributable
 * @version 1.0
 */
public class MainServer{
    static int port;
    static Thread  thread;
    static DataInputStream dataInputStream;
    static DataOutputStream dataOutStream;
    static ServerSocket s=null;
    //String
    public static void main (String[] args)throws IOException {
        System.out.println("服务器启动.......");
        BufferedReader fileIn=null;
        try{
            fileIn = new BufferedReader(new FileReader("c:\\config\\bank.txt"));
            String line;
            fileIn.close();
        }catch(IOException e){
           System.out.println("请确保在config\\下面存在着bank.txt文件");
           System.exit(1);
       }
       port = 1078;
       s = new ServerSocket(port);
       while(true){
           try{
            Socket soc = s.accept();
            BufferedReader  inFormClient = new BufferedReader(new InputStreamReader(soc.getInputStream()));
            String msg;
            char[] a = new char[1000];
            int recvLen = inFormClient.read(a, 0, 1000);
            if(recvLen < 0) {
                System.out.println("收报文失败");
            }else{
                for(int i = 0 ; i < recvLen ; i ++){
                     System.out.print(a[i] + ",");
                }
                System.out.print("\n");
            }
                
            
            inFormClient.close();
            inFormClient =  new BufferedReader(new FileReader("c:\\config\\bank.txt"));
            char[] charmsg = new char[10000];
            for(int i = 0 ; i < 10000 ; i ++){
                charmsg[i] = '\0';
            }
            //inFormClient.
            int sendLen = inFormClient.read(charmsg, 0 , 10000);
            if(sendLen < 0) {
                System.out.println("读config\\bank.txt文件失败");
            }
            msg = new String(charmsg, 0, sendLen);
            try{
               System.out.println("发送文件MSG ：" + msg);
               Thread.sleep(1000);
               DataOutputStream  outToClient=new  DataOutputStream(soc.getOutputStream());
               //System.out.println("msg")
               outToClient.writeChars(msg);
               soc.close();
               outToClient.flush();
            }catch(IOException ex){
                System.out.println("写文件失败!");
                soc.close();
            }
            inFormClient.close();
        }catch(Exception e){
            System.out.println("启动SOCKET出错！");
        }       }    }}

Answer 1

soc.getOutputStream(),你这里面都没有东西,如何发,从客户端接受数据后,你打印到控制台后,再加载服务器本机中的BANK.TXT文件后,soc.getOutputStream(),这个要重新实例化一次吧,因为你前面都close了,

Answer 2

public class MainServer{
    static int port;
    static Thread  thread;
    static DataInputStream dataInputStream;
    static DataOutputStream dataOutStream;
    static ServerSocket s=null;
    //String
    public static void main (String[] args)throws IOException {
        System.out.println("服务器启动.......");
        BufferedReader fileIn=null;
        try{
            fileIn = new BufferedReader(new FileReader("c:\\config\\bank.txt"));
            String line;
            fileIn.close();
        }catch(IOException e){
           System.out.println("请确保在config\\下面存在着bank.txt文件");
           System.exit(1);
       }
       port = 1078;
       s = new ServerSocket(port);
       while(true){
           try{
            Socket soc = s.accept();
            BufferedReader  inFormClient = new BufferedReader(new InputStreamReader(soc.getInputStream()));
            String msg;
            char[] a = new char[1000];
            int recvLen = inFormClient.read(a, 0, 1000);
            if(recvLen < 0) {
                System.out.println("收报文失败");
            }else{
                for(int i = 0 ; i < recvLen ; i ++){
                     System.out.print(a[i] + ",");
                }
                System.out.print("\n");
            }
                
            
           // inFormClient.close();//这一行注释掉，在finally块关，这句导致socket关闭
            inFormClient =  new BufferedReader(new FileReader("c:\\config\\bank.txt"));
            char[] charmsg = new char[10000];
            for(int i = 0 ; i < 10000 ; i ++){
                charmsg[i] = '\0';
            }
            //inFormClient.
            int sendLen = inFormClient.read(charmsg, 0 , 10000);
            if(sendLen < 0) {
                System.out.println("读config\\bank.txt文件失败");
            }
            msg = new String(charmsg, 0, sendLen);
            try{
               System.out.println("发送文件MSG ：" + msg);
               Thread.sleep(1000);
               DataOutputStream  outToClient=new  DataOutputStream(soc.getOutputStream());
               //System.out.println("msg")
               outToClient.writeChars(msg);
               
               outToClient.flush();
            }catch(IOException ex){
                System.out.println("写文件失败!");
            }finally{
             try{ soc.close();
               }catch(Exception e){}
             }
            inFormClient.close();
        }catch(Exception e){
            System.out.println("启动SOCKET出错！");
        }
      finally{
           //TODO 关闭inFormClient，outToClient
       }       }    }}