在用安卓手機(jī)做socket通信的時候，出現(xiàn)這個報錯 java.net.SocketException: socket failed: EACCES (Permission denied)，以后不用看就知道網(wǎng)絡(luò)權(quán)限沒有加。
服務(wù)端代碼如下：

public class SocketServer {
    public static void main(String[] args) throws IOException {
        //1.創(chuàng)建一個服務(wù)器端Socket，即ServerSocket，指定綁定的端口，并監(jiān)聽此端口
        ServerSocket serverSocket = new ServerSocket(12345);
        InetAddress address = InetAddress.getLocalHost();
        String ip = address.getHostAddress();
        Socket socket = null;
        //2.調(diào)用accept()等待客戶端連接
        System.out.println("~~~服務(wù)端已就緒，等待客戶端接入~，服務(wù)端ip地址: " + ip);
        socket = serverSocket.accept();
        //3.連接后獲取輸入流，讀取客戶端信息
        InputStream is=null;
        InputStreamReader isr=null;
        BufferedReader br=null;
        OutputStream os=null;
        PrintWriter pw=null;
        is = socket.getInputStream();     //獲取輸入流
        isr = new InputStreamReader(is,"UTF-8");
        br = new BufferedReader(isr);
        String info = null;
        while((info=br.readLine())!=null){
            //循環(huán)讀取客戶端的信息
            System.out.println("客戶端發(fā)送過來的信息" + info);
        }
        socket.shutdownInput();//關(guān)閉輸入流
        socket.close();
  }

客戶端代碼如下：我跑在安卓手機(jī)上

 private void acceptServer() throws IOException {
        //1.創(chuàng)建客戶端Socket，指定服務(wù)器地址和端口
        Socket socket = new Socket("xxx", 12345);
        //2.獲取輸出流，向服務(wù)器端發(fā)送信息
        OutputStream os = socket.getOutputStream();//字節(jié)輸出流
        PrintWriter pw = new PrintWriter(os);//將輸出流包裝為打印流
        //獲取客戶端的IP地址
        InetAddress address = InetAddress.getLocalHost();
        String ip = address.getHostAddress();
        pw.write("客戶端：~" + ip + "~ 接入服務(wù)器??！");
        pw.flush();
        socket.shutdownOutput();//關(guān)閉輸出流
        socket.close();
    }

xxx替換為自己的服務(wù)器的ip,保證手機(jī)和服務(wù)器在同一個網(wǎng)段即可。