TCP上传图片，2M图片变300M，来个大神大神 - 黑马程序员技术交流社区

package test;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.Socket;
import java.net.UnknownHostException;
public class TCPUploadClientPic {
/*
* 上传图片
*/
public static void main(String[] args) throws UnknownHostException, IOException {
// TODO Auto-generated method stub
//socket服务
Socket socket=new Socket("pcx",4444);
OutputStream outputStream=socket.getOutputStream();
//字节输入流，读取一个图片文件
FileInputStream fileInputStream=new FileInputStream("d:\\2.JPG");
int len=0;
byte[] buf=new byte[1024];
while((len=fileInputStream.read(buf))!=-1){
outputStream.write(buf,0,len);
}
socket.shutdownOutput();
BufferedReader ServersReturn=new BufferedReader(new InputStreamReader(socket.getInputStream()));
//显示服务器返回的信息
System.out.println(" 服务器信息："+ServersReturn.readLine());
outputStream.close();
ServersReturn.close();
socket.close();
}
}

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package test;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;
public class TCPUploadServersPic {
/*
*上传图片的服务器端
*/
public static void main(String[] args) throws IOException {
// TODO Auto-generated method stub
ServerSocket serverSocket=new ServerSocket(4444);
Socket socket =serverSocket.accept();
File file=new File("d:\\upload");
if(!file.exists())
file.mkdirs();
InputStream inputStream=socket.getInputStream();
FileOutputStream fileOutputStream= new FileOutputStream(file+File.separator+System.currentTimeMillis()+".jpg");
int len=0;
byte[] buf=new byte[1024];
while((len=inputStream.read())!=-1){
fileOutputStream.write(buf,0,len);
}
OutputStream outputStream=socket.getOutputStream();
outputStream.write("上传成功".getBytes());
fileOutputStream.close();
socket.close();
serverSocket.close();
}
}

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