真机测试socket通信

最新推荐文章于 2022-07-07 13:19:53 发布

jerry_2015

最新推荐文章于 2022-07-07 13:19:53 发布

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分类专栏： j2me 文章标签： socket 测试 exception string service output

本文链接：https://blog.youkuaiyun.com/jerry_2015/article/details/5451802

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本文介绍了一个简单的Java客户端-服务器通信程序示例。该示例演示了如何使用Socket进行客户端与服务器之间的数据发送与接收。客户端向服务器发送字符串消息，并接收服务器返回的数据。

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import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.OutputStream;

import javax.microedition.io.Connector;
import javax.microedition.io.SocketConnection;
import javax.microedition.lcdui.Alert;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Form;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;
/**
*
* @author jerry
*
*/
public class Clent extends MIDlet {
private Form f;
private Display dis;

public Clent() {
  dis=Display.getDisplay(this);
  f = new Form("xxxxxx");
  dis.setCurrent(f);
}
protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
  // TODO Auto-generated method stub

}

protected void pauseApp() {
// TODO Auto-generated method stub

}

protected void startApp() throws MIDletStateChangeException {

  new Thread() {
   public void run() {
    try {


     String s = "AA/n";
     log("begin");
     SocketConnection sc = (SocketConnection) Connector.open("socket://221.221.146.89:6000");
     log("cn_success:"+sc.getAddress());
     OutputStream os = sc.openOutputStream();
     log("os_success:"+os.toString());
     os.write(s.getBytes());
     os.flush();


     log("write_end.....");
     InputStream is = sc.openInputStream();
     log("is_success:"+is.toString());

     int count = 0;
     byte[] array = new byte[1024];
     ByteArrayOutputStream out = new ByteArrayOutputStream();
     while ((count = is.read(array, 0, array.length)) != -1) {
      out.write(array, 0, count);
     }
     log("read_success");
     String ss = new String(out.toByteArray());
     log("read resout"+ss);

     os.close();
     is.close();
     sc.close();
    } catch (Exception e) {
     log(e.getMessage());
    }

   }
  }.start();
}

private void log(String name){
  f.append(name);
  System.out.println(name);
}
}
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import java.io.*;
import java.net.*;
//服务器端
class Service extends Thread
{
String data=null;
String tempData=null;
DataInputStream input=null;
PrintStream output=null;
Socket client=null;
public Service(Socket client)
{
  this.client=client;
}
public void run()
{
  try
  {
   this.input=new DataInputStream(this.client.getInputStream());
   this.output=new PrintStream(this.client.getOutputStream());
   this.data=this.input.readLine();
   this.tempData="From Client: "+this.data;
   this.output.println(this.tempData);
   this.output.flush();
   System.out.println(this.tempData);

   closeInput(this.input);
   closeOutput(this.output);
   closeSocket(this.client);
   System.out.println("Over");
  }
  catch(IOException e)
  {
   closeInput(this.input);
   closeOutput(this.output);
   closeSocket(this.client);
   e.printStackTrace();
  }
  finally
  {
   closeInput(this.input);
   closeOutput(this.output);
   closeSocket(this.client);
  }
}
public static void closeOutput(OutputStream output)
{
  try
  {
   if(output!=null)
   {
    output.close();
    output=null;
   }
  }
  catch (Exception e)
  {
   e.printStackTrace();
  }
}
public static void closeInput(InputStream input)
{
  try
  {
   if(input!=null)
   {
    input.close();
    input=null;
   }
  }
  catch (Exception e)
  {
   e.printStackTrace();
  }
}
public static void closeSocket(Socket s)
{
  try
  {
   if(s!=null)
   {
    s.close();
    s=null;
   }
  }
  catch (Exception e)
  {
   e.printStackTrace();
  }
}
}
public class B
{
public static void main(String[] args)
{
  try
  {
   ServerSocket server=new ServerSocket(6000);
   System.out.println("Now Socket Server Start!");
   while(true)
   {
    Socket client=server.accept();
    Service ss=new Service(client);
    ss.start();
   }
  }
  catch(IOException e)
  {
   e.printStackTrace();
  }
}
}