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简易文件传送

摘要: 简易文件传送

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一、文件接收端
import java.net.*;

import java.io.*;

public class ReceiveFile {

    public static void main(String[] args) {

        BufferedReader user;

        int port;

        ServerSocket serverSkt;

        Socket clientSkt;

        BufferedReader fileInfo;

        BufferedInputStream fileReader;

        BufferedOutputStream fileWriter;

        String fileName;

        PrintStream printStream;

        try {

            user = new BufferedReader(

                    new InputStreamReader(System.in));

            System.out.println("简易文件接收v0.1版");

            System.out.print("连接端口: ");

            port = Integer.parseInt(user.readLine());

            System.out.println("将接收文件于端口: " + port);

            serverSkt = new ServerSocket(port);

            while(true) {

                System.out.println("倾听中....");

                clientSkt = serverSkt.accept();

                printStream = new PrintStream(clientSkt.getOutputStream());

                fileInfo = new BufferedReader(new

                              InputStreamReader(clientSkt.getInputStream()));

                fileName = fileInfo.readLine();

                System.out.println("与" +

                          clientSkt.getInetAddress() + "建立连接");

                System.out.print("接收文件 " + fileName + " (yes/no) ? ");

                if(user.readLine().equals("no")) {

                    printStream.println("no");

                    clientSkt.close();

                }

                else {

                    printStream.println("yes");

                    System.out.print("\nOK! 接收文件 " + fileName);

                    fileReader =

                        new BufferedInputStream(clientSkt.getInputStream());

                    fileWriter = new BufferedOutputStream(

                                    new FileOutputStream(fileName+"1"));

                    int readin;

                    while((readin = fileReader.read()) != -1) {

                        //System.out.print(".");

                        fileWriter.write(readin);

                    }

                    fileReader.close();

                    fileWriter.flush();

                    clientSkt.close();

                    System.out.println("\n文件接收完毕！");

                }

            }

        }

        catch(IOException e) {

            System.out.println(e.toString());

        }

    }

}

运行界面：

C:\java>javac *.java
Note: Depth.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.

C:\java>java ReceiveFile
简易文件接收v0.1版
连接端口: 2000
将接收文件于端口: 2000
倾听中....
与/127.0.0.1建立连接
接收文件 TransferFile.java (yes/no) ? yes

OK! 接收文件 TransferFile.java
文件接收完毕！
倾听中....

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　二、文件发送端


import java.net.*;

import java.io.*;

public class TransferFile {

    public static void main(String[] args) {

        BufferedReader user;

        BufferedReader serverInfo;

        Socket skt;

        BufferedInputStream fileReader;

        String remoteHost;

        int port;

        String fileName;

        PrintStream printStream;

        try {

            user = new BufferedReader(

                    new InputStreamReader(System.in));

            System.out.println("简易档案传送v0.1版");

            System.out.print("远端主机: ");

            remoteHost = user.readLine();

            System.out.print("远端主机连接端口: ");

            port = Integer.parseInt(user.readLine());

            System.out.print("要传送的文件: ");

            fileName = user.readLine();

            System.out.println("尝试与 " + remoteHost + " 连接....");

            skt = new Socket(remoteHost, port);

            System.out.println("连接成功！尝试传送文件....");

            serverInfo = new BufferedReader(

                           new InputStreamReader(skt.getInputStream()));

            printStream = new PrintStream(skt.getOutputStream());

            printStream.println(fileName);

            if(serverInfo.readLine().equals("no")) {

                System.out.println("对方拒接接收文件！");

                System.exit(0);

            }

            System.out.print("OK! 传送文件....");

            fileReader = new BufferedInputStream(

                             new FileInputStream(fileName));

            int readFile;

            while((readFile = fileReader.read()) != -1) {

                 //System.out.print(".");

                 printStream.write(readFile);

            }

            fileReader.close();

            printStream.flush();

            skt.close();

            System.out.println("\n文件传送文件！");

        }

        catch(UnknownHostException e) {

            System.out.println(e.toString());

        }

        catch(IOException e) {

            System.out.println(e.toString());

        }

    }

}

程序运行界面：

C:\java>java TransferFile
简易档案传送v0.1版
远端主机: 127.0.0.1
远端主机连接端口: 2000
要传送的文件: TransferFile.java
尝试与 127.0.0.1 连接....
连接成功！尝试传送文件....
OK! 传送文件....
文件传送文件！

C:\java>

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