发送端：
import java.io.BufferedInputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
public class FileSender {
private ServerSocket ss = null;
public FileSender() {
}
public void startSend(String filePath, int port) {
// socket输出流
DataOutputStream os = null;
// 文件输入流
DataInputStream is = null;
// 建立socket连接
Socket socket = null;
try {
// 选择进行传输的文件
File file = new File(filePath);
// 建立socket监听
ss = new ServerSocket(port);
socket = ss.accept();
os = new DataOutputStream(socket.getOutputStream());
// 将文件名及长度传给客户端。这里要真正适用所有平台，例如中文名的处理，还需要加工，
// 具体可以参见Think In Java 4th里有现成的代码。
os.writeUTF(file.getName());
os.flush();
os.writeLong((long) file.length());
os.flush();
is = new DataInputStream(new BufferedInputStream(new FileInputStream(filePath)));
// 缓冲区大小
int bufferSize = 8192;
// 缓冲区
byte[] buf = new byte[bufferSize];
// 传输文件
while (true) {
int read = 0;
if (is != null) {
read = is.read(buf);
}
if (read == -1) {
break;
}
os.write(buf, 0, read);
}
os.flush();
} catch (IOException e) {
e.printStackTrace();
} finally {
// 关闭所有连接
try {
if (os != null)
os.close();
} catch (IOException e) {
}
try {
if (is != null)
is.close();
} catch (IOException e) {
}
try {
if (socket != null)
socket.close();
} catch (IOException e) {
}
try {
if (ss != null)
ss.close();
} catch (IOException e) {
}
}
}
public static void main(String[] args) {
new FileSender().startSend("E:\\config.xml", 8821);
}
}
接收端：
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.Socket;
import java.net.UnknownHostException;
public class FileIncepter {
public FileIncepter() {
}
public void getFile(String savePath, String ip, int port) {
// 建立socket连接
Socket socket = null;
try {
socket = new Socket(ip, port);
} catch (UnknownHostException e1) {
e1.printStackTrace();
} catch (IOException e1) {
e1.printStackTrace();
}
// 建立socket输入流
DataInputStream inputStream = null;
try {
inputStream = new DataInputStream(new BufferedInputStream(socket.getInputStream()));
} catch (IOException e1) {
e1.printStackTrace();
}
try {
// 缓冲区大小
int bufferSize = 8192;
// 缓冲区
byte[] buf = new byte[bufferSize];
int passedlen = 0;
long len = 0;
// 获取文件名称
savePath += inputStream.readUTF();
DataOutputStream fileOut = new DataOutputStream(new BufferedOutputStream(new BufferedOutputStream(new FileOutputStream(savePath))));
// 获取文件长度
len = inputStream.readLong();
System.out.println("文件的长度为:" + len + " KB");
System.out.println("开始接收文件!");
// 获取文件
while (true) {
int read = 0;
if (inputStream != null) {
read = inputStream.read(buf);
}
passedlen += read;
if (read == -1) {
break;
}
System.out.println("文件接收了" + (passedlen * 100 / len) + "%");
fileOut.write(buf, 0, read);
}
System.out.println("接收完成，文件存为" + savePath);
fileOut.close();
} catch (Exception e) {
e.printStackTrace();
return;
}
}
public static void main(String[] args) {
new FileIncepter().getFile("F:\\", "localhost", 8821);
}
}