通过TCP协议进行图片上传时遇到的问题 - 黑马程序员技术交流社区

/*
需求:
通过TCP的Socket和ServerSocket,向服务段上传图片;
思路:
Socket服务:
1.想要上传图片,就需要使用IO字节流,把图片文件出入到Socket输出流,输出到服务端;
2.
*/
import java.io.*;
import java.net.*;
class SocketClient implements Runnable
{
private Socket s;
public SocketClient(Socket s)
{
this.s=s;
}
public void run()
{
File file=new File("yuanye.jpg");
if (file.exists())
{
throw new RuntimeException("您想要上传的图片文件不存在");
}
BufferedInputStream bufr=null;
try
{
bufr=new BufferedInputStream(new FileInputStream(file));
byte buf[]=new byte[1024];
int len=0;
while ((len=bufr.read(buf))!=-1)
{
s.getOutputStream().write(buf,0,len);
}
}
catch (FileNotFoundException fnfe)
{
throw new RuntimeException("关联文件到输入流失败");
}
catch (IOException ie)
{
throw new RuntimeException("上传文件失败");
}
finally
{
try
{
if (bufr!=null)
{
bufr.close();
}
}
catch (IOException ioe)
{
throw new RuntimeException("关闭输入流失败");
}
}
}
}
class SocketServer implements Runnable
{
private ServerSocket ss;
public SocketServer(ServerSocket ss)
{
this.ss=ss;
}
public void run()
{
File file=new File("yuanye复件.jpg");
PrintStream ps =null;
Socket s=null;
try
{
ps=new PrintStream(new BufferedOutputStream(new FileOutputStream(file)),true);
s=ss.accept();
byte[] buf=new byte[1024];
int len=0;
while ((len=s.getInputStream().read(buf))!=-1)
{
ps.println(buf);
}
}
catch (FileNotFoundException fnfe)
{
throw new RuntimeException("关联文件到输出流失败");
}
catch (IOException ie)
{
throw new RuntimeException("读取文件失败");
}
finally
{
ps.close();
try
{
if (s!=null)
{
s.close();
}
}
catch (IOException i)
{
throw new RuntimeException("客服端关闭失败");
}
}
}
}
class UploadingPictureByTCP
{
public static void main(String[] args) throws Exception
{
new Thread(new SocketClient(new Socket("192.168.0.4",10003))).start();
new Thread(new SocketServer(new ServerSocket(10003))).start();
}
}

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new Thread(new SocketServer(new ServerSocket(10003))).start();
Thread.sleep(10*1000);
new Thread(new SocketClient(new Socket("127.0.0.1", 10003))).start();

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if (!file.exists()) {
throw new RuntimeException("您想要上传的图片文件不存在");
}

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