Android客户端通过socket与服务器通信

android端--Client

package com.sec.chatroomandroid;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.Socket;  

import android.app.Activity;
import android.os.Bundle;
import android.os.StrictMode;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;  

public class MainActivity extends Activity
{
    private final String        DEBUG_TAG   = "Activity01";  

    private TextView    mTextView = null;
    private EditText    mEditText = null;
    private Button      mButton = null;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder().detectDiskReads().detectDiskWrites().detectNetwork().penaltyLog().build());
        StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder().detectLeakedSqlLiteObjects().detectLeakedClosableObjects().penaltyLog().penaltyDeath().build());

        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);  

        mButton = (Button)findViewById(R.id.Button01);
        mTextView = (TextView)findViewById(R.id.TextView01);
        mEditText = (EditText)findViewById(R.id.EditText01);  

        //登陆
        mButton.setOnClickListener(new OnClickListener()
        {
            public void onClick(View v)
            {
                Socket socket = null;
                String message = mEditText.getText().toString() + "\r\n";
                try
                {
                    //创建Socket
                    socket = new Socket("172.16.29.201",5000);
                    //向服务器发送消息
                    PrintWriter out = new PrintWriter( new BufferedWriter( new OutputStreamWriter(socket.getOutputStream())),true);
                    out.println(message);   

                    //接收来自服务器的消息
                    BufferedReader br = new BufferedReader(new InputStreamReader(socket.getInputStream()));
                    String msg = br.readLine();   

                    if ( msg != null )
                    {
                        mTextView.setText(msg);
                    }
                    else
                    {
                        mTextView.setText("数据错误!");
                    }
                    //关闭流
                    out.close();
                    br.close();
                    //关闭Socket
                    socket.close();
                }
                catch (Exception e)
                {
                    // TODO: handle exception
                    Log.e(DEBUG_TAG, e.toString());
                }
            }
        });
    }
} 

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.sec.chatroomandroid"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-permission android:name="android.permission.INTERNET"/>

    <uses-sdk
        android:minSdkVersion="14"
        android:targetSdkVersion="21" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

布局文件--activity_main

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    <TextView
    android:id="@+id/TextView01"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/Message_Recv"
    />
    <EditText
    android:id="@+id/EditText01"
    android:hint="@string/Message_Send"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content">
    </EditText>
    <Button
    android:id="@+id/Button01"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/Send"
    />
</LinearLayout>

string.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <string name="app_name">ChatRoomAndroid</string>
    <string name="Message_Recv">这里显示接收到服务器发来的信息</string>
    <string name="Message_Send">输入要发送的内容</string>
    <string name="Send">发送</string>

</resources>

PC端--Server

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;  

public class ChatServer implements Runnable
{
    public void run()
    {
        try
        {
            //创建ServerSocket
            ServerSocket serverSocket = new ServerSocket(5000,10);
            while (true)
            {
                //接受客户端请求
                Socket client = serverSocket.accept();
                System.out.println("accept");
                try
                {
                    //接收客户端消息
                    BufferedReader in = new BufferedReader(new InputStreamReader(client.getInputStream()));
                    String str = in.readLine();
                    System.out.println("read: " + str);
                    //向客户端发送消息
                    PrintWriter out = new PrintWriter( new BufferedWriter( new OutputStreamWriter(client.getOutputStream())),true);
                    out.println("server message");
                    //关闭流
                    out.close();
                    in.close();
                }
                catch (Exception e)
                {
                    System.out.println(e.getMessage());
                    e.printStackTrace();
                }
                finally
                {
                    //关闭
                    client.close();
                    System.out.println("close");
                }
                serverSocket.close();
            }

        }
        catch (Exception e)
        {
            System.out.println(e.getMessage());
        }
    }
    //main函数，开启服务器
    public static void main(String a[])
    {
        Thread desktopServerThread = new Thread(new ChatServer());
        desktopServerThread.start();
    }
}