TCP实现图片的上传

package demo1;

import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;

public class TCPClient {
public static void main(String[] args)throws IOException {
Socket socket=new Socket(“127.0.0.1”, 8000);
OutputStream out= socket.getOutputStream();
FileInputStream fis=new FileInputStream(“c:\\捕获.PNG”);

int len=0;
byte[] bytes =new byte[1024];
while((len=fis.read(bytes))!=-1) {
	out.write(bytes, 0, len);
	
}
socket.shutdownOutput();

InputStream in= socket.getInputStream();

len=in.read(bytes);
System.out.println(new String(bytes,0,len));
fis.close();
socket.close();
}
}

package demo1;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Random;

/*

• TCP图片上传服务器
• 1. ServerSocket套接字对象,监听端口8000
• 1. 方法accept()获取客户端的连接对象
• 1. 客户端连接对象获取字节输入流,读取客户端发送图片
• 1. 创建File对象,绑定上传文件夹

•   判断文件夹存在, 不存,在创建文件夹
  

• 1. 创建字节输出流,数据目的File对象所在文件夹
• 1. 字节流读取图片,字节流将图片写入到目的文件夹中
• 1. 将上传成功会写客户端
• 1. 关闭资源

*/
public class severs {
public static void main(String[] args) throws IOException{
ServerSocket server=new ServerSocket(8000);
Socket socket=server.accept();
InputStream in=socket.getInputStream();

File upload=new File(\"d:\\\\upload\");
if(!upload.exists())
	upload.mkdirs();

String filename=\"chao\"+System.currentTimeMillis()+new Random(99999)+\".PNG\";
FileOutputStream fos = new FileOutputStream(upload+File.separator+filename);
//读写字节数组
byte[] bytes = new byte[1024];
int len = 0 ;
while((len = in.read(bytes))!=-1){
	fos.write(bytes, 0, len);
}
//通过客户端连接对象获取字节输出流
//上传成功写回客户端
socket.getOutputStream().write(\"上传成功\".getBytes());

fos.close();
socket.close();
server.close();

}
}