1.服务端
1 package com.test.chatServer;
2
3 import java.io.IOException;
4 import java.net.ServerSocket;
5 import java.net.Socket;
6
7 import javax.swing.JOptionPane;
8
9 public class ChatServer extends Thread {
10 @Override
11 public void run() {
12 try {
13 ServerSocket svSocket = new ServerSocket(12345);
14 while(true){
15 Socket socket = svSocket.accept();//accept会阻塞当前线程，最好把这独立在线程中，然后等待客户socket连接
16 JOptionPane.showMessageDialog(null, "已经有客户socket连接到servSocket");
17 ChatClient c = new ChatClient(socket);
18 ChatManager.getChatManager().add(c);
19 c.start();
20 }
21 } catch (IOException e) {
22 e.printStackTrace();
23 }
24 }
25 }
1 package com.test.chatServer;
2
3 import java.io.BufferedReader;
4 import java.io.IOException;
5 import java.io.InputStream;
6 import java.io.InputStreamReader;
7 import java.net.Socket;
8
9 public class ChatClient extends Thread {
10 Socket socket;
11
12 void output(String out) {
13 try {
14 socket.getOutputStream().write(out.getBytes("UTF-8"));
15 } catch (IOException e) {
16 e.printStackTrace();
17 }
18 }
19
20 void receiveMsg() {
21 try {
22 InputStream is = socket.getInputStream();
23 InputStreamReader isr = new InputStreamReader(is, "UTF-8");
24 BufferedReader br = new BufferedReader(isr);
25 String line = null;
26 while ((line = br.readLine()) != null) {
27 line += "\n";//手动增加的\n，是由于命令行只有\r没有\n，正常客户端发送的要有10
28 ChatManager.getChatManager().sendToEveryone(this, line);
29 }
30 br.close();
31 isr.close();
32 is.close();
33
34 } catch (IOException e) {
35 e.printStackTrace();
36 }
37 }
38
39 void sendMsg() {
40 int count = 0;
41 while (true) {
42 count++;
43 output("\n loop : " + count + "\n");
44 try {
45 sleep(1000);
46 } catch (InterruptedException e) {
47 e.printStackTrace();
48 }
49 }
50 }
51
52 @Override
53 public void run() {
54 receiveMsg();
55 }
56
57 public ChatClient(Socket socket) {
58 this.socket = socket;
59 }
60
61 }
1 package com.test.chatServer;
2
3 import java.util.Vector;
4
5 public class ChatManager {
6
7 private static final ChatManager cm = new ChatManager();
8
9 private Vector<ChatClient> vector = new Vector<>();
10
11 public void add(ChatClient cc){
12 vector.add(cc);
13 }
14
15 public void sendToEveryone(ChatClient cc,String msg){
16 for (int i = 0; i < vector.size(); i++) {
17 ChatClient client = vector.get(i);
18 if (!cc.equals(client)) {
19 client.output(msg);
20 }
21 }
22 }
23
24 private ChatManager(){
25 }
26 public static ChatManager getChatManager(){
27 return cm;
28 }
29 }
2.android客户端
1 package com.example.socketsample;
2
3 import java.io.BufferedReader;
4 import java.io.BufferedWriter;
5 import java.io.IOException;
6 import java.io.InputStream;
7 import java.io.InputStreamReader;
8 import java.io.OutputStream;
9 import java.io.OutputStreamWriter;
10 import java.net.InetSocketAddress;
11 import java.net.Socket;
12 import java.net.SocketTimeoutException;
13 import java.net.UnknownHostException;
14
15 import android.app.Activity;
16 import android.os.AsyncTask;
17 import android.os.Bundle;
18 import android.view.Menu;
19 import android.view.MenuItem;
20 import android.view.View;
21 import android.widget.Button;
22 import android.widget.EditText;
23 import android.widget.TextView;
24 import android.widget.Toast;
25
26 public class MainActivity extends Activity {
27
28 private static final String IP = "192.168.1.100";
29 private static final int PORT = 12345;
30 private static final int TIME_OUT = 5000;
31
32 private EditText ip,input;
33 private TextView msgList;
34
35 private Socket socket;
36
37 private BufferedReader reader;
38 private BufferedWriter writer;
39
40 void connect(){
41
42 AsyncTask<Void, String, String> listnerThread = new AsyncTask<Void, String, String>(){
43 @Override
44 protected String doInBackground(Void... params) {
45 try {
46 //1，连接 socket
47 //socket不能在main线程中构造。
48 socket = new Socket();
49 //设置ip，端口，超时时间
50 socket.connect(new InetSocketAddress(ip.getText().toString(), PORT), TIME_OUT);
51
52 //2,初始化 in流，out流
53 writer = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));
54 reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
55 publishProgress("@success");
56
57 //3，从socket中读取内容
58 String line;
59 while ((line = reader.readLine())!= null) {
60 publishProgress(line);
61 }
62 }catch(UnknownHostException uhe) {
63 return "无法建立链接,主机名错误";
64 }catch(SocketTimeoutException ste){
65 return "连接 超时";
66 }catch(IOException ioe) {
67 return "IO异常" + ioe.getMessage();
68 }
69 return "执行完毕";
70 }
71 @Override
72 protected void onProgressUpdate(String... values) {
73 if (values[0].equals("@success")) {
74 msgList.append("链接成功！");
75 }
76 msgList.append("其它人说：" + values[0] + "\n");
77 }
78 @Override
79 protected void onPostExecute(String result) {
80 msgList.setText(result);
81 }
82 };
83 listnerThread.execute();
84
85
86 }
87 void send(){
88 try {
89 if (writer != null) {
90 msgList.append("你对其它人说：" + input.getText().toString() + "\n");
91 writer.write(input.getText().toString() + "\n");
92 writer.flush();
93 input.setText("");
94 }else{
95 msgList.setText("还没有连接");
96 }
97 } catch (IOException e) {
98 e.printStackTrace();
99 msgList.setText("写入数据异常");
100 }
101 }
102
103 //------------------------------------------
104 @Override
105 protected void onCreate(Bundle savedInstanceState) {
106 super.onCreate(savedInstanceState);
107 setContentView(R.layout.activity_main);
108
109 ip = (EditText) findViewById(R.id.edt_ip);
110 input = (EditText) findViewById(R.id.edt_input);
111 msgList = (TextView) findViewById(R.id.tv_msg_list);
112
113 findViewById(R.id.btn_connect).setOnClickListener(new View.OnClickListener() {
114
115 @Override
116 public void onClick(View v) {
117 connect();
118 }
119 });
120 findViewById(R.id.btn_send).setOnClickListener(new View.OnClickListener() {
121
122 @Override
123 public void onClick(View v) {
124 send();
125 }
126 });
127 }
128 }
1 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
2 xmlns:tools="http://schemas.android.com/tools"
3 android:id="@+id/Linear_frame"
4 android:layout_width="match_parent"
5 android:layout_height="match_parent"
6 android:orientation="vertical"
7 tools:context="${relativePackage}.${activityClass}" >
8
9 <LinearLayout
10 android:id="@+id/Linear_top"
11 android:layout_width="match_parent"
12 android:layout_height="wrap_content" >
13
14 <EditText
15 android:id="@+id/edt_ip"
16 android:layout_width="wrap_content"
17 android:layout_height="wrap_content"
18 android:layout_weight="1.10"
19 android:ems="10"
20 android:text="192.168.1.100" />
21
22 <Button
23 android:id="@+id/btn_connect"
24 android:layout_width="wrap_content"
25 android:layout_height="wrap_content"
26 android:text="connect" />
27 </LinearLayout>
28
29 <TextView
30 android:id="@+id/tv_msg_list"
31 android:layout_width="match_parent"
32 android:layout_height="wrap_content"
33 android:layout_weight="1"
34 android:hint="msg list" />
35
36 <LinearLayout
37 android:layout_width="match_parent"
38 android:layout_height="wrap_content"
39 android:orientation="vertical" >
40
41 <EditText
42 android:id="@+id/edt_input"
43 android:layout_width="match_parent"
44 android:layout_height="wrap_content"
45 android:ems="10"
46 android:hint="input your msg" >
47
48 <requestFocus />
49 </EditText>
50
51 <Button
52 android:id="@+id/btn_send"
53 android:layout_width="match_parent"
54 android:layout_height="wrap_content"
55 android:text="send" />
56
57 </LinearLayout>
58
59 </LinearLayout>
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