java完成兩台辦事器間文件復制的辦法。本站提示廣大學習愛好者：（java完成兩台辦事器間文件復制的辦法）文章只能為提供參考，不一定能成為您想要的結果。以下是java完成兩台辦事器間文件復制的辦法正文
本文實例講述了java完成兩台辦事器間文件復制的辦法。分享給年夜家供年夜家參考。詳細剖析以下：
平日我們應用最多的文件復制功效就是同辦事器之間的文件復制功效，這裡引見的是在通俗文件復制上功效進級，可以完成兩台辦事器完成文件的復制，上面一路來看看代碼。
1.辦事器端
package sterning;
import java.io.BufferedInputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.net.ServerSocket;
import java.net.Socket;
public class ServerTest {
int port = 8821;
void start() {
Socket s = null;
try {
ServerSocket ss = new ServerSocket(port);
while (true) {
// 選擇停止傳輸的文件
String filePath = "D:\\lib.rar";
File fi = new File(filePath);
System.out.println("文件長度:" + (int) fi.length());
// public Socket accept() throws
// IOException偵聽並接收到此套接字的銜接。此辦法在停止銜接之前一向壅塞。
s = ss.accept();
System.out.println("樹立socket鏈接");
DataInputStream dis = new DataInputStream(new BufferedInputStream(s.getInputStream()));
dis.readByte();
DataInputStream fis = new DataInputStream(new BufferedInputStream(new FileInputStream(filePath)));
DataOutputStream ps = new DataOutputStream(s.getOutputStream());
//將文件名及長度傳給客戶端。這裡要真正實用一切平台，例如中文名的處置，還須要加工，詳細可以拜見Think In Java 4th裡有現成的代碼。
ps.writeUTF(fi.getName());
ps.flush();
ps.writeLong((long) fi.length());
ps.flush();
int bufferSize = 8192;
byte[] buf = new byte[bufferSize];
while (true) {
int read = 0;
if (fis != null) {
read = fis.read(buf);
}
if (read == -1) {
break;
}
ps.write(buf, 0, read);
}
ps.flush();
// 留意封閉socket鏈接哦，否則客戶端會期待server的數據過去，
// 直到socket超時，招致數據不完全。
fis.close();
s.close();
System.out.println("文件傳輸完成");
}
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String arg[]) {
new ServerTest().start();
}
}
2.socket的Util幫助類
package sterning;
import java.net.*;
import java.io.*;
public class ClientSocket {
private String ip;
private int port;
private Socket socket = null;
DataOutputStream out = null;
DataInputStream getMessageStream = null;
public ClientSocket(String ip, int port) {
this.ip = ip;
this.port = port;
}
/** *//**
* 創立socket銜接
*
* @throws Exception
* exception
*/
public void CreateConnection() throws Exception {
try {
socket = new Socket(ip, port);
} catch (Exception e) {
e.printStackTrace();
if (socket != null)
socket.close();
throw e;
} finally {
}
}
public void sendMessage(String sendMessage) throws Exception {
try {
out = new DataOutputStream(socket.getOutputStream());
if (sendMessage.equals("Windows")) {
out.writeByte(0x1);
out.flush();
return;
}
if (sendMessage.equals("Unix")) {
out.writeByte(0x2);
out.flush();
return;
}
if (sendMessage.equals("Linux")) {
out.writeByte(0x3);
out.flush();
} else {
out.writeUTF(sendMessage);
out.flush();
}
} catch (Exception e) {
e.printStackTrace();
if (out != null)
out.close();
throw e;
} finally {
}
}
public DataInputStream getMessageStream() throws Exception {
try {
getMessageStream = new DataInputStream(new BufferedInputStream(socket.getInputStream()));
return getMessageStream;
} catch (Exception e) {
e.printStackTrace();
if (getMessageStream != null)
getMessageStream.close();
throw e;
} finally {
}
}
public void shutDownConnection() {
try {
if (out != null)
out.close();
if (getMessageStream != null)
getMessageStream.close();
if (socket != null)
socket.close();
} catch (Exception e) {
}
}
}
3.客戶端
package sterning;
import java.io.BufferedOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileOutputStream;
public class ClientTest {
private ClientSocket cs = null;
private String ip = "localhost";// 設置成辦事器IP private int port = 8821;
private String sendMessage = "Windwos";
public ClientTest() {
try {
if (createConnection()) {
sendMessage();
getMessage();
}
} catch (Exception ex) {
ex.printStackTrace();
}
}
private boolean createConnection() {
cs = new ClientSocket(ip, port);
try {
cs.CreateConnection();
System.out.print("銜接辦事器勝利!" + "\n");
return true;
} catch (Exception e) {
System.out.print("銜接辦事器掉敗!" + "\n");
return false;
}
}
private void sendMessage() {
if (cs == null)
return;
try {
cs.sendMessage(sendMessage);
} catch (Exception e) {
System.out.print("發送新聞掉敗!" + "\n");
}
}
private void getMessage() {
if (cs == null)
return;
DataInputStream inputStream = null;
try {
inputStream = cs.getMessageStream();
} catch (Exception e) {
System.out.print("吸收新聞緩存毛病\n");
return;
}
try {
//當地保留途徑，文件名會主動從辦事器端繼續而來。
String savePath = "E:\\";
int bufferSize = 8192;
byte[] buf = new byte[bufferSize];
int passedlen = 0;
long len=0;
savePath += inputStream.readUTF();
DataOutputStream fileOut = new DataOutputStream(new BufferedOutputStream(new BufferedOutputStream(new FileOutputStream(savePath))));
len = inputStream.readLong();
System.out.println("文件的長度為:" + len + "\n");
System.out.println("開端吸收文件!" + "\n");
while (true) {
int read = 0;
if (inputStream != null) {
read = inputStream.read(buf);
}
passedlen += read;
if (read == -1) {
break;
}
//上面進度條本為圖形界面的prograssBar做的，這裡假如是打文件，能夠會反復打印出一些雷同的百分比
System.out.println("文件吸收了" + (passedlen * 100/ len) + "%\n");
fileOut.write(buf, 0, read);
}
System.out.println("吸收完成，文件存為" + savePath + "\n");
fileOut.close();
} catch (Exception e) {
System.out.println("吸收新聞毛病" + "\n");
return;
}
}
public static void main(String arg[]) {
new ClientTest();
}
}
願望本文所述對年夜家的java法式設計有所贊助。
