Socket服务端实现

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监听类

import java.io.IOException;import java.net.ServerSocket;import java.net.Socket;/** * 监听类 * Created by user on 2016/11/8. */public class SocketListener extends Thread {    ServerSocket serverSocket;    Socket socket;    @Override    public void run() {        super.run();        try {            serverSocket = new ServerSocket(12345);            //死循环，保证服务端不断地监听            while (true) {                /**                 * 该方法为阻塞方法                 *  等待监听是否有客户端链接                 *  一旦有客户端连接到服务端，代码才会继续执行                 */                socket = serverSocket.accept();                System.out.println("有客户端连接成功");                ChatSocket chatSocket = new ChatSocket(socket);//                把创建出来的聊天类对象放入到manager的集合中                SocketManager.getInstance().add(chatSocket);                chatSocket.start();            }        } catch (IOException e) {            e.printStackTrace();        }    }}

用命令行验证是否连接成功，telnet localhost是建立本地连接，“12345”是端口号
这里写图片描述
聊天类

import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStreamWriter;import java.net.Socket;/** * 聊天类 * 1.调用write的方法的时候，忘服务器发送数据 * 2.只要聊天类已创建，服务端就要一直从客户端获取数据，看是否有数据发动过来 * Created by user on 2016/11/8. */public class ChatSocket extends Thread {    Socket socket;    public ChatSocket(Socket socket) {        this.socket = socket;    }    @Override    public void run() {        super.run();        try {            BufferedReader reader = new BufferedReader(                    new InputStreamReader(socket.getInputStream(), "UTF-8"));            String line = null;            while ((line = reader.readLine()) != null) {                SocketManager.getInstance().publish(this,line);            }        } catch (IOException e) {            e.printStackTrace();        }    }    public void write(String str) {        try {            /**             * 1.从socket中获取到输出的字节流             * 2.要把字节流转换成字符流（BufferedWriter）             * 3.字节流转换成字符流需要用到一个writer的类进行转换             */            BufferedWriter writer = new BufferedWriter(                    new OutputStreamWriter(socket.getOutputStream(), "UTF-8"));            //注意：在写出的时候要给写出的内容加一个\n，然后调用flush进行发送            writer.write(str + "\n");            writer.flush();        } catch (IOException e) {            e.printStackTrace();        }    }}

管理类

import java.util.Vector;/** * 管理类 * 1.管理聊天类对象 * 2.转发数据 * Created by user on 2016/11/8. */public class SocketManager {    /**     * vector和list 都是数据集合     * vector 是线程安全的     * list   是线程不安全     */    Vector<ChatSocket> chatSockets = new Vector<>();    /**     * managet需要使用单例     * 需要使用懒汉式     * 以为懒汉式是线程安全的方式     */    private static final SocketManager manager = new SocketManager();    private SocketManager() {    }    public static SocketManager getInstance() {        return manager;    }    //往manager的集合中存入一个聊天天对象    public void add(ChatSocket chatSocket) {        chatSockets.add(chatSocket);    }    /**     * 转发功能     * chatSocket  发送数据的聊天类对象     * str         发出的数据      */    public void publish(ChatSocket chatSocket, String str) {        for (int i = 0; i < chatSockets.size(); i++) {            ChatSocket cs = chatSockets.get(i);            if (!chatSocket.equals(cs)) {                cs.write(str);            }        }    }}

这是运行效果

下面是客户端代码

package com.baozilichao.mysocketclient;import android.app.Activity;import android.os.AsyncTask;import android.os.Bundle;import android.view.View;import android.view.Window;import android.widget.EditText;import android.widget.TextView;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStreamWriter;import java.net.Socket;public class MainActivity extends Activity {    EditText et;    TextView tv;    BufferedWriter writer;    BufferedReader reader;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        requestWindowFeature(Window.FEATURE_NO_TITLE);        setContentView(R.layout.activity_main);        et = (EditText) findViewById(R.id.et);        tv = (TextView) findViewById(R.id.tv);        findViewById(R.id.connect).setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                connect();            }        });        findViewById(R.id.send).setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                send();            }        });    }    public void connect() {        new AsyncTask<String, String, String>() {            @Override            protected String doInBackground(String... strings) {                try {                    Socket socket = new Socket("***.**.**.***", 12345);                    writer = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream(), "UTF-8"));                    reader = new BufferedReader(new InputStreamReader(socket.getInputStream(), "UTF-8"));                    publishProgress("链接成功");                    String line = null;                    while ((line = reader.readLine()) != null) {                        publishProgress(line);                    }                } catch (IOException e) {                    e.printStackTrace();                }                return null;            }            @Override            protected void onProgressUpdate(String... values) {                tv.append("对方说的内容：" + values[0] + "\n");            }        }.execute();    }    public void send() {        try {            writer.write(et.getText().toString() + "\n");            writer.flush();            tv.append("我说的内容"+et.getText().toString()+"\n");        } catch (IOException e) {            e.printStackTrace();        }    }}

这里写图片描述

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