Android网络编程之四：Socket编程

来源：互联网发布：乖离数据下载很慢编辑：程序博客网时间：2024/05/19 22:48

先讲点硬件配置吧，否则这个非常难测试。用模拟器调试会让人崩溃，太久了，而且往往会让人非常难受。我习惯用手机来测试程序：

硬件条件：

1、PC，肯定得有了

2、无线路由（50块左右，只要能用就行）

3、手机

谈点个人看法：Java Socket编程还是跟C#还是有点点区别，Java表现形式要比C#稍多，但万变不离其中。以下是大家用的形式，

费话少说，下面介绍原码：

1、服务器端程序：

public class testserver {

   public static void main(String[] args) {
       try
       {
           ServerSocket server=new ServerSocket(8888);
           Socket client;
           DataInputStream in;
           DataOutputStream out;
           byte[] buffers=new byte[1024];
           while(true)
           {
               try
               {
                   client=server.accept();
                   in=new DataInputStream(client.getInputStream());
                   out=new DataOutputStream(client.getOutputStream());
                   String msg=in.readUTF();
                   System.out.println("客户端："+msg);
                   out.writeUTF("已经收到!");
               }
               catch(Exception ex)
               {
                   System.out.println(ex.toString());
               }
           }
       }
       catch(Exception e)
       {
           System.out.println(e.toString());
       }
   }

}

2、布局文件

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.testclient.MainActivity" >

    <EditText
        android:id="@+id/etMsg"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginTop="108dp"
        android:ems="10"
        android:inputType="textMultiLine" >

        <requestFocus />
    </EditText>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="false"
        android:layout_below="@id/etMsg" >

        <EditText
            android:id="@+id/etSendMsg"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:ems="10" />

        <Button
            android:id="@+id/btnSend"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="发送" />

    </LinearLayout>

</RelativeLayout>

3、程序原代码（前面多线程的程序用上了哟）

public class MainActivity extends Activity implements OnClickListener {
   private Socket client;
   private EditText etMsg,etSendMsg;
   private Button btnSend;
   private String strMsg;
   private Handler mHandler=new Handler(){
       public void handleMessage(Message msg) {
           etMsg.append(strMsg);
           super.handleMessage(msg);
       }
   };
   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder().detectDiskReads().detectDiskWrites().detectNetwork().penaltyLog().build());

       StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder().detectLeakedSqlLiteObjects().detectLeakedClosableObjects().penaltyLog().penaltyDeath().build());

       setContentView(R.layout.main);
       etMsg=(EditText)findViewById(R.id.etMsg);
       etSendMsg=(EditText)findViewById(R.id.etSendMsg);
       btnSend=(Button)findViewById(R.id.btnSend);
       btnSend.setOnClickListener(this);
       connectServer();
   }
   private void connectServer()
   {

       String ip="172.168.11.15";
       try {
           client=new Socket(ip,8888);
       } catch (IOException e) {
           // TODO Auto-generated catch block
           e.printStackTrace();
           client=null;
       }

       new Thread(new Runnable(){

           @Override
           public void run() {
               DataInputStream in;

               while(true)
               {
                   try {
                       in=new DataInputStream(client.getInputStream());

                       strMsg=in.readUTF().toString();
                       Log.i("Test", strMsg);
                       mHandler.sendMessage(mHandler.obtainMessage());
                   } catch (IOException e) {
                       // TODO Auto-generated catch block
                       e.printStackTrace();
                   }

               }
           }

       }).start();;
   }
   @Override
   public void onClick(View v) {
       // TODO Auto-generated method stub
       try
       {
           DataOutputStream out=new DataOutputStream(client.getOutputStream());
           out.writeUTF(etSendMsg.getText().toString());
       }
       catch(Exception e)
       {}
   }


}

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