Java基础知识强化之网络编程笔记13:TCP之TCP协议上传图片并给出反馈

1. TCP协议上传图片并给出反馈:

(1)客户端:

 package cn.itcast_13;

 import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.Socket; public class UploadClient {
public static void main(String[] args) throws IOException {
// 创建客户端Socket对象
Socket s = new Socket("192.168.12.92", 19191); // 封装图片文件
BufferedInputStream bis = new BufferedInputStream(new FileInputStream(
"林青霞.jpg"));
// 封装通道内的流
BufferedOutputStream bos = new BufferedOutputStream(s.getOutputStream()); byte[] bys = new byte[1024];
int len = 0;
while ((len = bis.read(bys)) != -1) {
bos.write(bys, 0, len);
bos.flush();
} s.shutdownOutput(); // 读取反馈
InputStream is = s.getInputStream();
byte[] bys2 = new byte[1024];
int len2 = is.read(bys2);
String client = new String(bys2, 0, len2);
System.out.println(client); // 释放资源
bis.close();
s.close();
}
}

(2)服务端:

 package cn.itcast_13;

 import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket; public class UploadServer {
public static void main(String[] args) throws IOException {
// 创建服务器Socket对象
ServerSocket ss = new ServerSocket(19191); // 监听客户端连接
Socket s = ss.accept(); // 封装通道内流
BufferedInputStream bis = new BufferedInputStream(s.getInputStream());
// 封装图片文件
BufferedOutputStream bos = new BufferedOutputStream(
new FileOutputStream("mn.jpg")); byte[] bys = new byte[1024];
int len = 0;
while ((len = bis.read(bys)) != -1) {
bos.write(bys, 0, len);
bos.flush();
} // 给一个反馈
OutputStream os = s.getOutputStream();
os.write("图片上传成功".getBytes()); bos.close();
s.close();
}
}
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