1客户端：使用FileInputStream把文件读到内存，使用socket的OutputStream发送文件到ServerSocket服务端
package facepeople.tcp;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;
public class ClientTcp {
public static void main(String[] args) {
try {
FileInputStream fileInputStream = new FileInputStream("a.jpg");
Socket socketClient = new Socket("localhost", 6668);
OutputStream outputStream = socketClient.getOutputStream();
byte[] bytes1 = new byte[10 * 1024];
int length1;
while ((length1=fileInputStream.read(bytes1))!=-1){
outputStream.write(bytes1,0,length1);
}
socketClient.shutdownOutput();
System.out.println("文件发送完毕" );
// 解析服务端回写的数
InputStream inputStream = socketClient.getInputStream();
int length;
byte[] bytes = new byte[1024];
while ((length=inputStream.read(bytes))!=-1){
System.out.println("服务端传来的数据--> " + new String(bytes,0,length));
}
fileInputStream.close();
inputStream.close();
outputStream.close();
socketClient.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
2服务端：使用ServerSocket的InputStream获取到客户端传来的数据，使用FileOutputStream写到服务端的硬盘上。
package facepeople.tcp;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.nio.charset.StandardCharsets;
public class ServiceTcp {
public static void main(String[] args) {
try {
ServerSocket serverSocket = new ServerSocket(6668);
Socket acceptSocket = serverSocket.accept();
InputStream inputStream = acceptSocket.getInputStream();
FileOutputStream fileOutputStream = new FileOutputStream("a3.jpg");
int length;
byte[] bytes = new byte[10*1024];
// length=inputStream.read(bytes);
while ((length=inputStream.read(bytes))!=-1){
System.out.println("客户端传来的数据 = "+length );
// System.out.println("客户端传来的数据 = " +new String(bytes,0,length) );
fileOutputStream.write(bytes,0,length);
}
// 服务端回写数据
OutputStream outputStream = acceptSocket.getOutputStream();
outputStream.write("客户端你好，服务端文件已保存".getBytes(StandardCharsets.UTF_8));
outputStream.close();
inputStream.close();
serverSocket.close();
} catch (IOException e) {
System.out.println("e = " + e.getMessage());
e.printStackTrace();
}
}
}
