Android developers use NanoHttpd to build servers

Create a Server on the client side,

public class SimpleServer extends NanoHTTPD {

    public SimpleServer(int port) {
        super(port);
    }

    @Override
    public Response serve(IHTTPSession session) {
        StringBuilder builder = new StringBuilder();
        builder.append("
         ");
        builder.append("<p>Hello! This Android HTTP Server.</p>");
        builder.append("<h1>:)</h1></body></html>\n");
        returnnewFixedLengthResponse(builder.toString()); }}Copy the code

Create a piece of code in the Inherited page Activity class to enable the server

public class MainActivity extends Activity {
 
    private SimpleServer server;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
                // Access address: http://127.0.0.1:8080
        server = new SimpleServer(8080);
        try {
            
            // Because the application emulates HTML placed in the asset directory,
            // Store the AssetManager pointer here.
            server.asset_mgr = this.getAssets();
            
            // Start the Web service
            server.start();
            
            Log.i("Httpd"."The server started.");
        } catch(IOException ioe) {
            Log.w("Httpd"."The server could not start."); }}}Copy the code

Finally, using NanoHTTPD requires adding network permissions

 <uses-permission android:name="android.permission.INTERNET"/>Copy the code