Socket通信，PC-pc,pc-Android

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Socket通信

PC与PC,PC与Android的Socket通信

本程序已经本人虚拟机，实体机验证。Android版本在4.0以上。

本人是初学者，因为喜欢业余做游戏，涉及到socket通信，参考许多资料和网上各位大神传的程序，还是遇到许多bug,经过一点点的查找整理，调试，分析，终于通信成功。本文服务端是一对多通信，使用本人的PC机做服务端，客户端分别用：本人PC机，Android模拟器（4.4.2），以及公司用的mid(android系统的平板电脑)，

需要注意的地方：服务端采用线程来处理每个客户端的通信，客户端（尤其是Android4.0以上版本）采用线程来发送接收数据与服务端通信（刚开始没有采用线程，直接搬网上一些大神的程序，他们许多是在2.3版本做的，在4.0以上版本总是出问题）。另外需要注意：控件不能在子线程中修改，按键监控，线程判断等。

下面贴出程序：

PC机主控端：

a.主程序

importjava.io.IOException;

import java.net.ServerSocket;

importjava.net.Socket;

publicclass MultiServer {

publicstaticdoublearea=0;

public MultiServer() {

//TODOAuto-generated constructor stub

}

publicstaticvoid main(String[] args) {

//TODOAuto-generated method stub

try{

System.out.println("服务器启动了");

ServerSocket serverSocket = new ServerSocket(12345);

Socket connectToClient = null;

while(true){//这是一个无限循环

//等待客户请求

connectToClient =serverSocket.accept();

new ServerThread(connectToClient);

}

}catch(IOException e){

e.printStackTrace();

}

b.线程处理程序：

importjava.io.DataInputStream;

importjava.io.DataOutputStream;

importjava.io.IOException;

importjava.net.Socket;

publicclass ServerThreadextends Thread {

private SocketconnectToClient;//声名套接字

private DataInputStreaminFromClient;//声名数据输入流

private DataOutputStreamoutToClient;//声名数据输出流

//private double area=0;

public ServerThread(Socket socket)throws IOException {

//TODOAuto-generated constructor stub

super();

connectToClient = socket;//实例化

inFromClient =newDataInputStream(connectToClient.getInputStream());

outToClient =new DataOutputStream(connectToClient.getOutputStream());

start();//启动run()方法

}

publicvoid run(){

String str;

double radius=0;//area=0;

boolean goon =true;

try{

System.out.println("有客户端连接到服务器了");

while(goon){

str = inFromClient.readUTF();

if(!str.equals("bye")){

if(str.equals("接受")){

str = inFromClient.readUTF();

radius = Double.parseDouble(str);

System.out.println("接收到的半径值为：" +radius);

MultiServer.area = radius*radius*Math.PI;

str = Double.toString(MultiServer.area);

System.out.println("圆面积是"+str);

outToClient.writeUTF("我已经准备好了，快来接收吧");

outToClient.flush();

System.out.println("连接服务器成功了");

}

//str = inFromClient.readUTF();

elseif(str.equals("发送")){

System.out.println("要发送的圆面积是：" +MultiServer.area);

str = Double.toString(MultiServer.area);

outToClient.writeUTF(str);

outToClient.flush();

System.out.println("圆面积"+str+"已经发送");

System.out.println("连接服务器成功了");

}

}else{

goon = false;

outToClient.writeUTF("bye");

outToClient.flush();

System.out.println("连接服务器结束了");

}

inFromClient.close();

outToClient.close();

connectToClient.close();

}catch(IOException e){

e.printStackTrace();

}

public ServerThread(Runnable target) {

super(target);

//TODOAuto-generated constructor stub

}

public ServerThread(String name) {

super(name);

//TODOAuto-generated constructor stub

}

public ServerThread(ThreadGroup group, Runnable target) {

super(group, target);

//TODOAuto-generated constructor stub

}

public ServerThread(ThreadGroup group, String name) {

super(group, name);

//TODOAuto-generated constructor stub

}

public ServerThread(Runnable target, String name) {

super(target, name);

//TODOAuto-generated constructor stub

}

public ServerThread(ThreadGroup group, Runnable target, String name) {

super(group, target, name);

//TODOAuto-generated constructor stub

}

public ServerThread(ThreadGroup group, Runnable target, String name,

long stackSize) {

super(group, target, name, stackSize);

//TODOAuto-generated constructor stub

}

2.pc机客户端：

importjava.io.BufferedReader;

importjava.io.DataInputStream;

importjava.io.DataOutputStream;

importjava.io.IOException;

importjava.io.InputStreamReader;

import java.net.Socket;

publicclass Client {

public Client() {

//TODOAuto-generated constructor stub

}

publicstaticvoid main(String[] args) {

//TODOAuto-generated method stub

try{

//连接到本机，端口号是5500

Socket connectToServer = new Socket("localhost",12345);

//将数据输入流连接到socket

DataInputStream inFromServer = new DataInputStream(

connectToServer.getInputStream());

//将数据输出流连接到socket

DataOutputStream outToServer = new DataOutputStream(

connectToServer.getOutputStream());

System.out.println("输入半径数值发送到服务器，输入bye结束。");

String outStr,inStr;

boolean goon =true;

BufferedReader buf = new BufferedReader(new InputStreamReader(System.in));

//反复读用户数据并计算

while(goon){

outToServer.writeUTF("接受");

outToServer.flush();

outStr = buf.readLine();//读入用户输入

outToServer.writeUTF(outStr);

outToServer.flush();

inStr = inFromServer.readUTF();

System.out.println("收到的握手信号是： "+inStr);

if(inStr.equals("我已经准备好了，快来接收吧"))

{

//System.out.println("程序走到这一步了吗？");

outToServer.writeUTF("发送");

outToServer.flush();

inStr = inFromServer.readUTF();

}

if(!inStr.equals("bye")){

System.out.println("从服务器返回的结果是： "+inStr);

}else{

goon = false;

System.out.println("从服务器返回的结果结束! ");

}

inFromServer.close();

outToServer.close();

connectToServer.close();

}catch(IOException e){

e.printStackTrace();

}

3.Android客户端

a.Main.xml:

<?xmlversion="1.0"encoding="utf-8"?>

<LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:orientation="vertical">

<Button

android:id="@+id/rev"

android:text="接收显示"

android:layout_width="wrap_content"

android:layout_height="wrap_content"/>

<Button

android:id="@+id/out"

android:text="获取发送"

android:layout_width="wrap_content"

android:layout_height="wrap_content"/>

<EditText

android:id="@+id/show"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:hint="请输入半径值:"

<EditText

android:id="@+id/display"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:hint="请查看圆面积为"

<TextView

android:id="@+id/receiver"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="IsTransproting...."/>

<!-- <TextView

android:id="@+id/outputer"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="IsTransporting...." /> -->

</LinearLayout>

b.Mainfest

<?xmlversion="1.0"encoding="utf-8"?>

<manifestxmlns:android="http://schemas.android.com/apk/res/android"

package="com.example.rocketandclient"

android:versionCode="1"

android:versionName="1.0">

<uses-sdk

android:minSdkVersion="14"

android:targetSdkVersion="19"/>

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

<application

android:allowBackup="true"

android:icon="@drawable/ic_launcher"

android:label="@string/app_name"

android:theme="@style/AppTheme">

<activity

android:name="com.example.rocketandclient.Main"

android:label="@string/app_name">

<intent-filter>

<actionandroid:name="android.intent.action.MAIN"/>

<categoryandroid:name="android.intent.category.LAUNCHER"/>

</intent-filter>

</activity>

</application>

</manifest>

主要是开机网络通信：<uses-permissionandroid:name="android.permission.INTERNET"/>

C.Main.class

packagecom.example.rocketandclient;

import java.io.DataInputStream;

importjava.io.DataOutputStream;

importjava.io.IOException;

importjava.io.InputStream;

importjava.net.InetAddress;

importjava.net.Socket;

importjava.net.UnknownHostException;

importcom.example.rocketandclient.R;

importcom.example.rocketandclient.Main.outputerlistenr;

importcom.example.rocketandclient.Main.receiverlistenr;

importandroid.app.Activity;

importandroid.app.ActionBar;

importandroid.app.Fragment;

importandroid.os.Bundle;

importandroid.os.Handler;

import android.os.Message;

importandroid.util.Log;

importandroid.view.LayoutInflater;

importandroid.view.Menu;

importandroid.view.MenuItem;

importandroid.view.View;

importandroid.view.ViewGroup;

importandroid.view.View.OnClickListener;

import android.widget.Button;

importandroid.widget.EditText;

importandroid.widget.TextView;

importandroid.os.Build;

/***

*注意，以下采用两种方法实现添加线程

*@author Administrator

publicclass Mainextends Activityimplements OnClickListener, Runnable {// //implements Runnable

private ButtonbtnRev=null;

private ButtonbtnOut=null;

private TextViewrevtext=null;

private EditTextoutText=null;

private EditTextdisplayText=null;

private Stringstr;

private DataInputStreaminRec=null;

private DataOutputStreamoutput=null;

private InetAddressserverAddr ;

private Threadth1,th2,th;

private SocketmSocket;

//public final boolean sendMessage (Message msg);

//public void handleMessage (Message msg);

@Override

protectedvoidonCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

btnRev=(Button)findViewById(R.id.rev);

btnOut=(Button)findViewById(R.id.out);

outText=(EditText)findViewById(R.id.show);

displayText=(EditText)findViewById(R.id.display);

revtext=(TextView)findViewById(R.id.receiver);

* 注意两种按键监听的写法，一种需要执行OnClickListener接口，

* btnOut.setOnClickListener(this);

*并且重写 @Override

*public void onClick(View v)

*一种：rev.setOnClickListener(newreceiverlistenr());需要写内部类：

*class receiverlistenr implements OnClickListener{

* public void onClick(View v) { ;}}

//rev.setOnClickListener(newreceiverlistenr());

//out.setOnClickListener(newoutputerlistenr());

btnRev.setOnClickListener(this);

btnOut.setOnClickListener(this);

/*if (savedInstanceState == null) {

getFragmentManager().beginTransaction()

.add(R.id.container, new PlaceholderFragment()).commit();

}*/

}

class receiverlistenrimplements OnClickListener{

publicvoid onClick(View v) { //TODO Auto-generated method stub

Log.v(str,"接收操作");

th2 = new Thread(new SocketInRun());

th2.start();

}

class outputerlistenrimplementsOnClickListener{

publicvoid onClick(View v) { //TODO Auto-generated method stub

Log.v(str,"进入发送操作");

th1 = new Thread(new SocketOutRun());

th1.start();

}

class SocketInRunimplementsRunnable {

@Override

publicvoid run(){

try {

//实例化Socket

Socketsocket2 = null;

serverAddr = InetAddress.getByName("192.168.9.124");

socket2=new Socket("192.168.9.124",12345);

output =new DataOutputStream(socket2.getOutputStream());

output.writeUTF("发送");

output.flush();

//获得输入流

inRec=new DataInputStream(socket2.getInputStream());

String msg="";

str=msg =inRec.readUTF();

Log.v(str,"接收到的圆面积是：msg"+str);

//设置文本框的字符串

//displayText.setText(msg);

//Main.revtext.setText(msg);//子线程内不能设置控件，否则程序崩溃

Log.v(msg,"接收到的圆面积是："+msg);

inRec.close();

socket2.close();

}

catch (UnknownHostException e) { //TODOAuto-generated catch block

e.printStackTrace();

}

catch (IOException e) { //TODOAuto-generated catch block

e.printStackTrace();

}

class SocketOutRunimplementsRunnable {

@Override

publicvoid run(){

try {

//实例化Socket

Socketsocket1 = null;

serverAddr = InetAddress.getByName("192.168.9.124");

Log.v(str,"进入发送操作1");

socket1=new Socket("192.168.9.124",12345);

Log.v(str,"进入发送操作2");

Stringmsg = outText.getText().toString();

output =new DataOutputStream(socket1.getOutputStream());

output.writeUTF("接受");

output.flush();

output.writeUTF(msg);

output.flush();

output.close();

socket1.close();

}

catch (UnknownHostException e) { //TODOAuto-generated catch block

e.printStackTrace();

}

catch (IOException e) { //TODOAuto-generated catch block

e.printStackTrace();

}

} //catch(Exceptione){}

}

@Override

publicvoid onClick(View v) {

//TODOAuto-generated method stub

if(v ==btnRev){

Log.v(str,"接收操作");

//th2 = new Thread(new SocketInRun());

th2 =new Thread(this);//线程实例化

th2.start();//线程启动

//displayText.setText(str);

//revtext.setText(str);

}

if(v ==btnOut){

Log.v(str,"进入发送操作");

//th1 = new Thread(new SocketOutRun());

th1 =new Thread(this);

th1.start();

}

@Override

publicvoid run() {

//TODOAuto-generated methodstubthis

th =new Thread(this);

if(th.currentThread() == th1){//判断当前执行的是哪个线程，如果是线程1，操作发送程序

Log.v(str,"1");

try {

//实例化Socket

Socket socket1 = null;

serverAddr = InetAddress.getByName("192.168.9.124");

Log.v(str,"进入发送操作1");

socket1=new Socket("192.168.9.124",12345);

Log.v(str,"进入发送操作2");

String msg = outText.getText().toString();

output =new DataOutputStream(socket1.getOutputStream());//实例化输出流

output.writeUTF("接受");//写数据

output.flush();//

output.writeUTF(msg);

output.flush();

output.close();

socket1.close();

}

catch (UnknownHostException e) { //TODOAuto-generated catch block

e.printStackTrace();

}

catch (IOException e) { //TODOAuto-generated catch block

e.printStackTrace();

}

if(th.currentThread() == th2){//如果是进程2则操作下面接收到数据

Log.v(str,"2");

try {

//实例化Socket

Socket socket2 = null;

String msg="";

serverAddr = InetAddress.getByName("192.168.9.124");

socket2=new Socket("192.168.9.124",12345);//设置机器所用的网络IP，要与PC机保持一致，端口自定义

output =new DataOutputStream(socket2.getOutputStream());

output.writeUTF("发送");

output.flush();

//获得输入流

inRec=new DataInputStream(socket2.getInputStream());

str=msg =inRec.readUTF();//读数据

//msg = inRec.readUTF();

Message msgg = new Message();

msgg.what = 100;

this.mHandler.sendMessage(msgg);

Log.v(msg,"接收到的圆面积是："+msg);

inRec.close();

socket2.close();

}

catch (UnknownHostException e) { //TODOAuto-generated catch block

e.printStackTrace();

}

catch (IOException e) { //TODOAuto-generated catch block

e.printStackTrace();

}

*注意控件的设置不能在子线程中操作，需要在主线程中。

*需要子线程中参数来改变控件的请注意以下方法

privateHandlermHandler =new Handler() {

publicvoid handleMessage(Message msg) {

switch (msg.what){

case 100:

displayText.setText(str);

revtext.setText(str);

break;

}

};

}

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