上传 文本文件 ，jpg

/*
上传文本文件。

原理：
其实就是将本地的文件数据通过socket流，发送到了服务端。服务端对这些数据进行文件存储

*/

import java.io.*;
import java.net.*;
class UploadClient
{
public static void main(String[] args)throws Exception
{
Socket s =new Socket("192.168.1.253",9005);

//读取要上传的本地文本文件，为了提高效率，使用了缓冲区。
BufferedReader bufr = new BufferedReader(new FileReader("UdpDemo.java"));

PrintWriter out = new PrintWriter(s.getOutputStream(),true);

String line = null;

while((line=bufr.readLine())!=null)
{
out.println(line.toUpperCase());
}

//out.println("");

s.shutdownOutput();

//读取服务端发挥的上传成功信息。
BufferedReader bufIn = new BufferedReader(new InputStreamReader(s.getInputStream()));
String info = bufIn.readLine();
System.out.println(info);

bufr.close();

s.close();

}
}
class UploadServer
{
public static void main(String[] args) throws Exception
{

ServerSocket ss = new ServerSocket(9005);

Socket s = ss.accept();
String ip = s.getInetAddress().getHostAddress();
System.out.println(ip+"....connected");

BufferedReader bufIn = new BufferedReader(new InputStreamReader(s.getInputStream()));

PrintWriter pw = new PrintWriter(new FileWriter("server.txt"),true);

String line = null;

while((line=bufIn.readLine())!=null)
{
//if("over".equals(line))
//break;
pw.println(line);
}

PrintWriter out =new PrintWriter(s.getOutputStream(),true);
out.println("上传成功---");

pw.close();

s.close();

ss.close();
}
}

import java.net.*;
import java.io.*;

/*
服务端将获取到的客户端封装到单独的线程中。

*/

class JpgClient2
{
public static void main(String[] args) throws Exception
{

if(args.length==0)
{
System.out.println("指定一个jpg文件先！");
return ;
}

File file = new File(args[0]);

if(!(file.exists() && file.isFile() && file.getName().endsWith(".jpg")))
{
System.out.println("选择文件错误，请重新选择一个“ok”的文件。");
return ;
}

Socket s = new Socket("192.168.1.253",9006);

FileInputStream fis = new FileInputStream(file);

OutputStream out = s.getOutputStream();

byte[] buf = new byte[1024];

int len = 0;

while((len=fis.read(buf))!=-1)
{
out.write(buf,0,len);
}

s.shutdownOutput();

InputStream in = s.getInputStream();
byte[] bufIn = new byte[1024];
int num = in.read(bufIn);

String str = new String(bufIn,0,num);

System.out.println(str);

fis.close();
s.close();
}
}

class JpgThread implements Runnable
{
private Socket s;
JpgThread(Socket s)
{
this.s = s;
}
public void run()
{

int count = 1;

String ip = s.getInetAddress().getHostAddress();

try
{

InputStream in = s.getInputStream();

File dir = new File("c:\\pic");
File file = new File(dir,ip+"("+count+").jpg");

while(file.exists())
file = new File(dir,ip+"("+(count++)+").jpg");

FileOutputStream fos = new FileOutputStream(file);

byte[] buf = new byte[1024];

int len = 0;
while((len=in.read(buf))!=-1)
{
fos.write(buf,0,len);
}

OutputStream out = s.getOutputStream();

out.write("上传文件成功".getBytes());

fos.close();
s.close();
}
catch (Exception e)
{
System.out.println(e.toString());
}
}
}
class JpgServer2
{
public static void main(String[] args)throws Exception
{
ServerSocket ss = new ServerSocket(9006);

while(true)
{
Socket s = ss.accept();
String ip = s.getInetAddress().getHostAddress();
System.out.println(ip+"....connected");

new Thread(new JpgThread(s)).start();
}

}
}