公司要实现一个简单的聊天功能,提前研究一下Socket通信,而公司的服务端功能又没有实现,所以这里就把服务端的功能放到一个界面实现了。
直接上代码:
主要代码:
package com.app.socketdemo; import android.annotation.SuppressLint; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.text.Html; import android.text.TextUtils; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.ScrollView; import android.widget.TextView; import android.widget.Toast; import java.io.DataInputStream; import java.io.DataOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.net.InetAddress; import java.net.ServerSocket; import java.net.Socket; import androidx.appcompat.app.AppCompatActivity; import butterknife.BindView; import butterknife.ButterKnife; import butterknife.OnClick; public class MainActivity extends AppCompatActivity { @BindView(R.id.et_ip) EditText etIp; @BindView(R.id.btn_connect) Button btnConnect; @BindView(R.id.tv_receive) TextView tvReceive; @BindView(R.id.tv_content) TextView tvContent; @BindView(R.id.et_input) EditText etInput; @BindView(R.id.btn_send) Button btnSend; @BindView(R.id.sv_content) ScrollView svContent; @BindView(R.id.btn_service) Button btnService; private StringBuffer strMsg = new StringBuffer(); private final int MESSAGE_ERROR = 0; private final int MESSAGE_SUCCEED = 1; private final int MESSAGE_RECEIVE = 2; private Socket sock; private OutputStream outx; private InputStream inx; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ButterKnife.bind(this); //启动服务端 new Thread(() -> new Server().startService()).start(); } @OnClick({R.id.btn_connect, R.id.btn_service, R.id.btn_send}) public void onViewClicked(View view) { switch (view.getId()) { case R.id.btn_connect://连接服务端 String strip = etIp.getText().toString().trim(); if (strip.indexOf(":") >= 0) { //启动连接 new Socket_thread(strip).start(); } break; case R.id.btn_service: if (!TextUtils.isEmpty(etInput.getText().toString())) { sendString("服务端:" + etInput.getText().toString().trim()); etInput.setText(""); } else { Toast.makeText(this, "输入不可为空", Toast.LENGTH_SHORT).show(); } break; case R.id.btn_send: if (!TextUtils.isEmpty(etInput.getText().toString())) { sendStrSocket("客户端:" + etInput.getText().toString().trim()); etInput.setText(""); } else { Toast.makeText(this, "输入不可为空", Toast.LENGTH_SHORT).show(); } break; } } /** * 连接服务器 */ class Socket_thread extends Thread { private String IP = "";//ip地址 private int PORT = 0;//端口号 public Socket_thread(String strip) { //如: 127.0.0.1:8081 String[] stripx = strip.split(":"); this.IP = stripx[0]; this.PORT = Integer.parseInt(stripx[1]); } @Override public void run() { try { disSocket(); //连接服务器,此处会一直处于阻塞,直到连接成功 sock = new Socket(this.IP, this.PORT); //阻塞停止,表示连接成功 setMessage("连接成功", MESSAGE_SUCCEED); } catch (Exception e) { setMessage("连接服务器时异常", MESSAGE_ERROR); e.printStackTrace(); return; } try { //获取到输入输出流 outx = sock.getOutputStream(); inx = sock.getInputStream(); } catch (Exception e) { setMessage("获取输入输出流异常", MESSAGE_ERROR); e.printStackTrace(); return; } new Inx().start(); } } /** * 循环接收数据 */ class Inx extends Thread { @Override public void run() { while (true) { byte[] bu = new byte[1024]; try { int conut = inx.read(bu);//设备重启,异常 将会一直停留在这 if (conut == -1) { setMessage("服务器断开", MESSAGE_ERROR); disSocket(); return; } String strread = new String(bu, "GBK").trim(); setMessage(strread, MESSAGE_RECEIVE); } catch (IOException e) { System.out.println(e); } } } } /** * 断开连接 */ private void disSocket() { if (sock != null) { try { outx.close(); inx.close(); sock.close(); sock = null; } catch (Exception e) { setMessage("断开连接时发生错误", MESSAGE_ERROR); } } } @SuppressLint("HandlerLeak") private Handler handler = new Handler() { @Override public void handleMessage(Message msg) { switch (msg.arg1) { case MESSAGE_ERROR: disSocket(); strMsg.append(msg.obj + "
"); tvContent.setText(Html.fromHtml(strMsg.toString())); break; case MESSAGE_SUCCEED: strMsg.append(msg.obj + "
"); tvContent.setText(Html.fromHtml(strMsg.toString())); break; case MESSAGE_RECEIVE: //收到数据 strMsg.append(msg.obj); if (!strMsg.toString().substring(strMsg.length() - 4, strMsg.length()).equals("
")) { strMsg.append("
"); } tvContent.setText(Html.fromHtml(strMsg.toString())); svContent.fullScroll(ScrollView.FOCUS_DOWN); break; default: break; } } }; /** * 发送消息 */ private void sendStrSocket(final String senddata) { new Thread(new Runnable() { @Override public void run() { try { String str = "" + senddata + ""; outx.write(str.getBytes("gbk"));//"utf-8" } catch (Exception e) { setMessage("数据发送异常", MESSAGE_ERROR); } } }).start(); } /** * 消息处理 */ private void setMessage(String obj, int arg1){ Message message = new Message(); message.arg1 = arg1; message.obj = obj; handler.sendMessage(message); } /*************************************************************服务端(用于测试)**********************************************************************/ private String msg = ""; public class Server { ServerSocket serverSocket = null; public final int port = 8081; public Server() { //输出服务器的IP地址 try { InetAddress addr = InetAddress.getLocalHost(); serverSocket = new ServerSocket(port); } catch (IOException e) { e.printStackTrace(); } } public void startService() { try { while (true) { Socket socket = null; socket = serverSocket.accept();//等待一个客户端的连接,在连接之前,此方法是阻塞的 new ConnectThread(socket).start(); new ConnectThread1(socket).start(); } } catch (IOException e) { e.printStackTrace(); } } /** * 向客户端发送信息 */ class ConnectThread extends Thread { Socket socket = null; public ConnectThread(Socket socket) { super(); this.socket = socket; } @Override public void run() { try { DataOutputStream out = new DataOutputStream(socket.getOutputStream()); while (true) { Thread.sleep(1000); if (!TextUtils.isEmpty(msg)) { String str = "" + msg + ""; out.write(str.getBytes("gbk")); out.flush(); msg = ""; } } } catch (IOException e) { e.printStackTrace(); } catch (InterruptedException e) { e.printStackTrace(); } } } /** * 接收客户端信息 */ class ConnectThread1 extends Thread { Socket socket = null; public ConnectThread1(Socket socket) { super(); this.socket = socket; } @Override public void run() { try { DataInputStream inp = new DataInputStream(socket.getInputStream()); while (true) { byte[] bu = new byte[1024]; int conut = inp.read(bu);//设备重启,异常 将会一直停留在这 if (conut == -1) { setMessage("服务器断开", MESSAGE_ERROR); return; } String strread = new String(bu, "GBK").trim(); setMessage(strread, MESSAGE_RECEIVE); } } catch (IOException e) { e.printStackTrace(); } } } } private void sendString(String str) { msg = str; } }
运行效果:
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。