package com.wuming.lesson02;import java.io.*; import java.net.ServerSocket; import java.net.Socket;public class TcpServerDemo02 {public static void main(String[] args) throws Exception {//1.創服務ServerSocket serverSocket = new ServerSocket(9000);//2.監聽客戶端連接Socket socket = serverSocket.accept();//阻塞式監聽，一直等待客戶端連接//3.獲取輸入流InputStream is = socket.getInputStream();//4.文件輸出FileOutputStream fos = new FileOutputStream(new File("receive2.jpg"));//自動生成圖片byte[] buffer = new byte[1024];int len;while((len=is.read(buffer))!=-1){fos.write(buffer,0,len);}//通知客戶端我接受完畢了OutputStream os = socket.getOutputStream();os.write("我接受完畢了，你可以斷開了".getBytes());//關閉資源fos.close();is.close();socket.close();serverSocket.close();} } =========================== package com.wuming.lesson02;import java.io.*; import java.net.InetAddress; import java.net.Socket;public class TcpClientDemo02 {public static void main(String[] args) throws Exception {//1.創Socket連接Socket socket = new Socket(InetAddress.getByName("127.0.0.1"),9000);//2.創輸出流OutputStream os = socket.getOutputStream();//3.讀取文件FileInputStream fis = new FileInputStream(new File("wg.jpg"));//圖片放入src同級路徑//4.寫文件byte[] buffer = new byte[1024];int len;while((len=fis.read(buffer))!=-1){os.write(buffer,0,len);}//通知服務器，我已經結束了socket.shutdownOutput();//我已經傳輸完了//確定服務器接受完畢，才斷開InputStream inputStream = socket.getInputStream();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.關閉資源baos.close();inputStream.close();fis.close();os.close();socket.close();} }

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先啟動服務端，在啟動客戶端，控制臺輸出：

在src同級路徑生成一個圖片

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