android app 与电脑wifi通信

电脑上的java程序

package hello;import java.util.Arrays;import java.io.*;import java.net.*;import java.util.Scanner;public class Server{public static void main(String[] args)throws IOException{ServerSocket ss=new ServerSocket(30001);while(true){//循环读取手机发来的信息//System.out.println("1");Socket s=ss.accept();BufferedReader br=new BufferedReader(new InputStreamReader((s.getInputStream())));            String line=br.readLine();            System.out.println(line);            br.close();            s.close();}}}

android 代码：

将Edittext 的字符串传向电脑

public class MainActivity extends AppCompatActivity {    //private Button mybu;    private  EditText edit;    public void send1(View view) throws IOException {        new Thread(){            @Override            public void run(){                try {                    //电脑wifi ip地址                    String host = "192.168.23.1";  //要连接的服务端IP地址                    int port = 30001;   //要连接的服务端对应的监听端口                    //与服务端建立连接                    Socket client = new Socket(host, port);                    edit =(EditText) findViewById(R.id.editView);                    String ls=edit.getText().toString();                    OutputStream os=client.getOutputStream();                    os.write(ls.getBytes("utf-8"));                    os.close();                    client.close();                }                catch (IOException e){                    e.printStackTrace();                }            }        }.start();    }    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);    }}

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