Java 基于tcp协议实现文件上传
服务端
package lesson02;
import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;
/**
* 服务端接收文件
*/
public class TcpServerDemo2 {
public static void main(String[] args) throws IOException {
//1、创建服务
ServerSocket serverSocket = new ServerSocket(9000);
//2、监听客户端的连接
Socket socket = serverSocket.accept();//阻塞式监听,会一直等待客户端连接
//3、获取输入流
InputStream is = socket.getInputStream();
//4、文件输出
FileOutputStream fos = new FileOutputStream(new File("receive.jpg"));
byte[] buffer = new byte[1024];
int len;
while ((len = is.read(buffer)) != -1){
fos.write(buffer, 0, len);
}
//通知客户端我接收完毕了
OutputStream os = socket.getOutputStream();
os.write("我接收完毕了,你可以断开了".getBytes());
//5、关闭资源
fos.close();
is.close();
socket.close();
serverSocket.close();
}
}
客户端
package lesson02;
import java.io.*;
import java.net.InetAddress;
import java.net.Socket;
/**
* 客户端上传文件
*/
public class TcpClientDemo2 {
public static void main(String[] args) throws Exception {
//1、创建一个Socket连接
Socket socket = new Socket(InetAddress.getByName("127.0.0.1"), 90000);
//2、创建一个输出流
OutputStream os = socket.getOutputStream();
//3、读取文件
FileInputStream fis = new FileInputStream(new File("toux.jpg"));
//4、写出文件
byte[] buffer = new byte[1024];
int len;
while ((len = fis.read(buffer)) != -1){
os.write(buffer, 0, len);
}
//通知服务器,我已经结束了
socket.shutdownOutput(); //我已经传输完了
//确定服务器接收完毕,才能够断开连接
InputStream inputStream = socket.getInputStream();
//Sting byte[]
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buffer2 = new byte[1024];
int len2;
while ((len2 = inputStream.read(buffer2)) != -1){
baos.write(buffer2, 0, len2);
}
System.out.println(baos.toString());
//5、关闭资源
fis.close();
os.close();
socket.close();
}
}
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