1.介绍

2.使用方法

3.java后台代码

服务器server

package com.lucky.servertest;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.OutputStream;import java.io.PrintStream;import java.net.ServerSocket;import java.net.Socket;public class MyServer {    public static final String bm="gbk"; //定义客户端和服务器通信的统一编码    public static void main(String[] args) throws IOException {        ServerSocket serverSocket=new ServerSocket(30003); //实例化一个服务器套接字,30003为端口号        while (true){            Socket socket=serverSocket.accept(); //获取套接字            InputStream inputStream=socket.getInputStream(); //服务器socket输入流，从socket中读取数据            OutputStream outputStream=socket.getOutputStream();//服务器socket输出流，对应数据的写操作            BufferedReader bufferedReader=new BufferedReader(new InputStreamReader(inputStream)); //读取客户端传输过来的数据            String str=bufferedReader.readLine();            System.out.println(str);  //控制台输出utf-8            PrintStream printStream=new PrintStream(outputStream);            printStream.println(new String(("收到的消息：").getBytes(bm))+str);  //将数据传递给客户端            //printStream.println("收到的消息："+str);  //将数据传递给客户端        }    }}

客户端手机

package com.lucky.test49socket1;import android.os.Handler;import android.os.Message;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.EditText;import android.widget.TextView;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.OutputStream;import java.io.PrintStream;import java.io.UnsupportedEncodingException;import java.net.Socket;public class MainActivity extends AppCompatActivity {    EditText editText;    TextView textView;    Button button1;    String stringTemp;    String datastr;    public static final String bm="gbk";    //将接收到的服务器数据显示到textview    Handler handler=new Handler(){        @Override        public void handleMessage(Message msg) {            if(msg.what==0x01){                try {                    textView.setText("1"+new String(stringTemp.getBytes(bm)));                } catch (UnsupportedEncodingException e) {                    e.printStackTrace();                }            }        }    };    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        editText=findViewById(R.id.editText);        textView=findViewById(R.id.textView2);        button1=findViewById(R.id.button);        button1.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                new Thread(){                    @Override                    public void run() {                        try {                            Socket socket=new Socket("192.168.228.2",30003);                            //向服务器发送消息，socket输出流，写                            OutputStream outputStream=socket.getOutputStream();                            PrintStream printStream=new PrintStream(outputStream);                            printStream.println("<-----杭州--->"+editText.getText().toString());//将数据传输到Myserver服务器                            //接收来自服务器的消息                            InputStream inputStream=socket.getInputStream();  //socket输入流,读                            BufferedReader bufferedReader=new BufferedReader(new InputStreamReader(inputStream,bm));                            stringTemp=bufferedReader.readLine();                            handler.sendEmptyMessage(0x01);                        } catch (IOException e) {                            e.printStackTrace();                        }                    }                }.start();            }        });    }}