Usando nanohttpd para el servidor en el servidor local, cómo servir el código HTML estático en todo el directorio?

lkahtz:

No puedo hacer el trabajo nanohttpd. No parece ser capaz de encontrar el wwwdirectorio raíz de la aplicación.

Mi código está en https://github.com/tlkahn/neonx

Mi código en MainActivity.java:

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        BottomNavigationView navView = findViewById(R.id.nav_view);
        mWebView = findViewById(R.id.webkit);
        navView.setOnNavigationItemSelectedListener(mOnNavigationItemSelectedListener);
        WebSettings webSettings = mWebView.getSettings();
        webSettings.setMixedContentMode(WebSettings.MIXED_CONTENT_ALWAYS_ALLOW);
        webSettings.setDomStorageEnabled(true);
        mWebView.getSettings().setLoadsImagesAutomatically(true);
        mWebView.getSettings().setJavaScriptEnabled(true);
        mWebView.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
        mWebView.setWebViewClient(new WebViewClient() {
            @Override
            public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
                return false;
            }
        });
        if (!haveNetworkConnection()) {
            new AlertDialog.Builder(this)
                .setTitle("You are not connected to internet.")
                .setMessage("Are you sure you want to exit?")
                .setPositiveButton("Yes", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        finishAffinity();
                        System.exit(0);
                    }
                }).setNegativeButton("No", null).show();
        }
        startLocalServer(3000, "www", true, true );
    }

  public void startLocalServer(int port, String root, Boolean localhost, Boolean keepAlive) {
      try {
          File www_root = new File(root);
          server = new WebServer("localhost", port, www_root.getAbsoluteFile());
          server.start();
          printIp();
      } catch (IOException e) {
          e.printStackTrace();
      }
  }

Cuando traté de visitar localhost:3000, tengo el error: dada ruta no es un directorio. El error parece venir de esta línea: https://git.io/fjS3f

Creo que la forma en que inicializar el RootDir está mal (esta línea: https://git.io/fjS3v ). Pero, ¿cómo puedo hacer este trabajo? Me refiero a servir a todo el directorio, lo que significa que todos los CSS / JS / hypyerlinks debería funcionar, una vez que se inicia nanohttpd que sirven ...

Sahil Manchanda:

Salida:

LogCat:

2019-08-05 15:21:53.838 10650-10650/com.neonxorg.neonx E/MainActivity: -------Assets List-----
2019-08-05 15:21:53.838 10650-10650/com.neonxorg.neonx E/MainActivity: asset-manifest.json
2019-08-05 15:21:53.838 10650-10650/com.neonxorg.neonx E/MainActivity: favicon.ico
2019-08-05 15:21:53.838 10650-10650/com.neonxorg.neonx E/MainActivity: index.html
2019-08-05 15:21:53.838 10650-10650/com.neonxorg.neonx E/MainActivity: manifest.json
2019-08-05 15:21:53.838 10650-10650/com.neonxorg.neonx E/MainActivity: precache-manifest.81af63d07b6dd6ae8e331187c522b020.js
2019-08-05 15:21:53.838 10650-10650/com.neonxorg.neonx E/MainActivity: service-worker.js
2019-08-05 15:21:53.838 10650-10650/com.neonxorg.neonx E/MainActivity: static
2019-08-05 15:21:53.842 10650-10650/com.neonxorg.neonx E/MainActivity: copyFolderFromAssets rootDirFullPath-www targetDirFullPath-/storage/emulated/0/Android/data/com.neonxorg.neonx/cache/www
2019-08-05 15:21:53.865 10650-10650/com.neonxorg.neonx E/MainActivity: copyFolderFromAssets rootDirFullPath-www/static targetDirFullPath-/storage/emulated/0/Android/data/com.neonxorg.neonx/cache/www/static
2019-08-05 15:21:53.867 10650-10650/com.neonxorg.neonx E/MainActivity: copyFolderFromAssets rootDirFullPath-www/static/css targetDirFullPath-/storage/emulated/0/Android/data/com.neonxorg.neonx/cache/www/static/css
2019-08-05 15:21:53.922 10650-10650/com.neonxorg.neonx E/MainActivity: copyFolderFromAssets rootDirFullPath-www/static/js targetDirFullPath-/storage/emulated/0/Android/data/com.neonxorg.neonx/cache/www/static/js
2019-08-05 15:21:54.352 10650-10650/com.neonxorg.neonx E/MainActivity: copyFolderFromAssets rootDirFullPath-www/static/media targetDirFullPath-/storage/emulated/0/Android/data/com.neonxorg.neonx/cache/www/static/media
2019-08-05 15:21:54.526 10650-10650/com.neonxorg.neonx E/MainActivity: -------Root File List-----
2019-08-05 15:21:54.528 10650-10650/com.neonxorg.neonx E/File: /storage/emulated/0/Android/data/com.neonxorg.neonx/cache/www/precache-manifest.81af63d07b6dd6ae8e331187c522b020.js
2019-08-05 15:21:54.528 10650-10650/com.neonxorg.neonx E/File: /storage/emulated/0/Android/data/com.neonxorg.neonx/cache/www/service-worker.js
2019-08-05 15:21:54.528 10650-10650/com.neonxorg.neonx E/File: /storage/emulated/0/Android/data/com.neonxorg.neonx/cache/www/static
2019-08-05 15:21:54.528 10650-10650/com.neonxorg.neonx E/File: /storage/emulated/0/Android/data/com.neonxorg.neonx/cache/www/favicon.ico
2019-08-05 15:21:54.528 10650-10650/com.neonxorg.neonx E/File: /storage/emulated/0/Android/data/com.neonxorg.neonx/cache/www/manifest.json
2019-08-05 15:21:54.528 10650-10650/com.neonxorg.neonx E/File: /storage/emulated/0/Android/data/com.neonxorg.neonx/cache/www/asset-manifest.json
2019-08-05 15:21:54.528 10650-10650/com.neonxorg.neonx E/File: /storage/emulated/0/Android/data/com.neonxorg.neonx/cache/www/index.html
2019-08-05 15:21:54.704 10650-10650/com.neonxorg.neonx E/MainActivity: Connected : Please access! http://192.168.1.2:3000 From a web browser

Código:

public final String TAG = getClass().getSimpleName();
public void startLocalServer(int port, String root, Boolean localhost, Boolean keepAlive) {
        try {
            String[] filePathList = (getAssets().list("www"));
            Log.e(TAG,"-------Assets List-----");
            for (String s : filePathList) {
                Log.e(TAG, s);
            }
            File externalCache = getExternalCacheDir();
            if (externalCache != null) {
                String path = externalCache.getAbsolutePath() + "/" + root;
                copyFolderFromAssets(getApplicationContext(), "www", path);
                File www_root = new File(path);
                Log.e(TAG,"-------Root File List-----");
                for (File f : www_root.listFiles()) {
                    Log.e("File ", f.getAbsolutePath());
                }
                server = new WebServer("localhost", port, www_root.getCanonicalFile());
                server.start();
                printIp();
            }

        } catch (IOException e) {
            Log.e(TAG, Log.getStackTraceString(e));
        }
    }

    public void copyFolderFromAssets(Context context, String rootDirFullPath, String targetDirFullPath) {
        Log.e(TAG,"copyFolderFromAssets " + "rootDirFullPath-" + rootDirFullPath + " targetDirFullPath-" + targetDirFullPath);
        File file = new File(targetDirFullPath);
        if (!file.exists()) {
            new File(targetDirFullPath).mkdirs();
        }
        try {
            String[] listFiles = context.getAssets().list(rootDirFullPath);// 遍历该目录下的文件和文件夹
            for (String string : listFiles) {// 看起子目录是文件还是文件夹，这里只好用.做区分了
                if (isFileByName(string)) {// 文件
                    copyFileFromAssets(context, rootDirFullPath + "/" + string, targetDirFullPath + "/" + string);
                } else {// 文件夹
                    String childRootDirFullPath = rootDirFullPath + "/" + string;
                    String childTargetDirFullPath = targetDirFullPath + "/" + string;
                    new File(childTargetDirFullPath).mkdirs();
                    copyFolderFromAssets(context, childRootDirFullPath, childTargetDirFullPath);
                }
            }
        } catch (IOException e) {
            Log.e(TAG, Log.getStackTraceString(e));
        }
    }


    public void copyFileFromAssets(Context context, String assetsFilePath, String targetFileFullPath) {
        InputStream assestsFileInputStream;
        try {
            assestsFileInputStream = context.getAssets().open(assetsFilePath);
            FileOutputStream fOS = new FileOutputStream(new File(targetFileFullPath));
            int length = -1;
            byte[] buf = new byte[1024];
            while ((length = assestsFileInputStream.read(buf)) != -1) {
                fOS.write(buf, 0, length);
            }
            fOS.flush();
        } catch (IOException e) {
            Log.e(TAG, Log.getStackTraceString(e));
        }
    }

    private boolean isFileByName(String str) {
        return str.contains(".");
    }

    private void printIp() {
        WifiManager wifiManager = (WifiManager) getApplicationContext().getSystemService(WIFI_SERVICE);
        int ipAddress = wifiManager.getConnectionInfo().getIpAddress();
        final String formatedIpAddress = String.format("%d.%d.%d.%d", (ipAddress & 0xff), (ipAddress >> 8 & 0xff),
                (ipAddress >> 16 & 0xff), (ipAddress >> 24 & 0xff));
        Log.e(TAG,"Connected : " + "Please access! http://" + formatedIpAddress + ":" + server.getListeningPort() + " From a web browser");
    }

ruta dada no es un directorio.

Cuando nanphttpd no es capaz de localizar los datos entonces se da este error.

¿Por qué usted no está recibiendo el error real

En el bloque de captura de copyFolderFromAssetsy copyFileFromAssetsque está utilizando e.printStackTrace(), que no se muestra en su LogCat debido a la aplicación muestran sólo determinada filtro

Con el fin de imprimir los errores, es necesario utilizar la siguiente:

Log.e(TAG, Log.getStackTraceString(e));

He sustituido la totalidad de su System.out y e.printStackTrace con las declaraciones Log.e. Lo más probable es que la aplicación no fue capaz de copiar el contenido del directorio www al directorio de destino. He cambiado directorio de destino en el directorio de caché y funcionó en mi dispositivo. (vea abajo):

File externalCache = getExternalCacheDir();
if (externalCache != null) {
    String path = externalCache.getAbsolutePath() + "/" + root;
    File www_root = new File(path);
    copyFolderFromAssets(getApplicationContext(), "www", path);
    Log.e(TAG,"-------Root File List-----");
    for (File f : www_root.listFiles()) {
        Log.e("File ", f.getAbsolutePath());
    }
    server = new WebServer("localhost", port, www_root.getCanonicalFile());
    server.start();
    printIp();
}

Nota al margen:

• No hay necesidad de utilizar staticla palabra clave en los que la función hasta que, oa menos que desee copiar en una clase de utilidad