solicitar<\/a> para dirigir el resto del tr\u00e1fico a Sync Gateway.<\/p>\n
Instala los siguientes m\u00f3dulos de Node.js:<\/p>\n
npm install express body-parser request http-proxy --save<\/code><\/pre>\nAbrir un nuevo archivo servidor.js<\/code> y a\u00f1ade lo siguiente:<\/p>\nvar express = require('express')\r\n , bodyParser = require('body-parser')\r\n , request = require('request').defaults({json: true})\r\n , httpProxy = require('http-proxy');\r\n\r\n\/\/ 1\r\nvar app = express();\r\napp.use('\/signup', bodyParser.json());\r\n\r\n\/\/ 2\r\napp.post('\/signup', function (req, res) {\r\n console.log('its signup time');\r\n\r\n var json = req.body;\r\n var options = {\r\n url: 'https:\/\/0.0.0.0:4985\/smarthome\/_user\/',\r\n method: 'POST',\r\n body: json\r\n };\r\n\r\n request(options, function(error, response) {\r\n res.writeHead(response.statusCode);\r\n res.end();\r\n });\r\n});\r\n\r\n\/\/ 3\r\napp.all('*', function(req, res) {\r\n var url = 'https:\/\/0.0.0.0:4984' + req.url;\r\n req.pipe(request(url)).pipe(res);\r\n});\r\n\r\n\/\/ 4\r\nvar server = app.listen(8000, function () {\r\n var host = server.address().address;\r\n var port = server.address().port;\r\n\r\n console.log('App listening at https:\/\/%s:%s', host, port);\r\n});<\/code><\/pre>\nEsto es lo que ocurre paso a paso:<\/p>\n
\nInstanciar una nueva instancia de express y utilizar la funci\u00f3n bodyParser<\/code> s\u00f3lo si la ruta coincide con inscr\u00edbase en<\/code>. De hecho, para todas las dem\u00e1s solicitudes enviadas a Sync Gateway se necesita el cuerpo de la solicitud sin procesar.<\/li>\nManejar el \/inscripci\u00f3n<\/code> y utilizar el m\u00f3dulo de solicitud para crear el usuario en el puerto de administraci\u00f3n.<\/li>\nProxy todas las dem\u00e1s solicitudes a Sync Gateway.<\/li>\n Inicia el servidor web Node.js en el puerto 8000.<\/li>\n<\/ol>\nA partir de ahora, utilizar\u00e1s la siguiente url para crear usuarios a trav\u00e9s de la aplicaci\u00f3n y poner en marcha las r\u00e9plicas push\/pull:<\/p>\n
https:\/\/localhost:8000<\/p>\n
Cree otro usuario para comprobar que todo funciona como se espera:<\/p>\n
$ curl -vX POST -H 'Content-Type: application\/json' \r\n -d '{\"name\": \"andy\", \"password\": \"letmein\"}' \r\n :8000\/signup\/<\/code><\/pre>\nY para iniciar sesi\u00f3n como este usuario:<\/p>\n
$ curl -vX POST -H 'Content-Type: application\/json' \r\n -d '{\"name\": \"andy\", \"password\": \"letmein\"}' \r\n :8000\/smarthome\/_session<\/code><\/pre>\nEn la siguiente secci\u00f3n, crear\u00e1s una aplicaci\u00f3n Android sencilla con una pantalla de inicio de sesi\u00f3n y registro para probar esos puntos finales.<\/p>\n
Aplicaci\u00f3n Android<\/h2>\n Abra Android Studio y seleccione Iniciar un nuevo proyecto de Android Studio<\/strong> del Inicio r\u00e1pido<\/strong> men\u00fa.<\/p>\nNombre de la aplicaci\u00f3n SmartHome<\/strong>establezca un dominio de empresa y una ubicaci\u00f3n de proyecto adecuados y, a continuaci\u00f3n, haga clic en Siguiente<\/strong>:<\/p>\n
En el cuadro de di\u00e1logo Dispositivos Android de destino, aseg\u00farese de marcar Tel\u00e9fono y tableta<\/strong>ajuste el SDK m\u00ednimo a API 22: Android 5.1 (Lollipop)<\/strong> para ambos, y haga clic en Siguiente<\/strong>:<\/p>\n
En la siguiente A\u00f1adir una actividad a M\u00f3vil<\/strong> seleccione A\u00f1adir Actividad en blanco<\/strong> y nombre la actividad Actividad de bienvenida<\/strong>:<\/p>\n
Para construir las funcionalidades de registro e inicio de sesi\u00f3n se utilizar\u00e1n dos dependencias:<\/p>\n
\nBiblioteca de apoyo al dise\u00f1o de Android<\/strong>para tener componentes de texto de entrada que sigan las especificaciones de Material Design.<\/li>\nOkHttp<\/strong>para gestionar las peticiones POST a \/inscripci\u00f3n<\/code> y \/smarthome\/sesi\u00f3n<\/code>.<\/li>\n<\/ul>\nEn build.gradle<\/code>a\u00f1ade esas dependencias:<\/p>\ncompile 'com.android.support:design:22.2.1'\r\ncompile 'com.squareup.okhttp:okhttp:2.3.0'<\/code><\/pre>\nEn actividad_bienvenida.xml<\/code>a\u00f1ada lo siguiente LinearLayout<\/strong> en el interior del RelativeLayout<\/strong>:<\/p>\n\r\n \r\n <\/button>\r\n<\/button><\/code><\/pre>\nObserve que ambos botones tienen un onClick<\/code> atributo. Mueva el cursor del rat\u00f3n sobre uno de los m\u00e9todos y utilice la tecla alt + enter<\/code> > Crear openLoginActivity(vista)<\/code> para crear ese m\u00e9todo en BienvenidoActividad<\/code>:<\/p>\n
Haga lo mismo con el Inscribirse<\/strong> bot\u00f3n.<\/p>\nA continuaci\u00f3n, cree dos nuevas clases y dise\u00f1os XML utilizando la funci\u00f3n Actividad en blanco<\/strong> plantilla. Una deber\u00eda llamarse Inicio de sesi\u00f3n<\/code> y el otro Reg\u00edstrese en<\/code>:<\/p>\n
En el openLoginActivity<\/code> y openSignUpActivity<\/code> a\u00f1ada las siguientes intenciones expl\u00edcitas:<\/p>\npublic void openLoginActivity(View view) {\r\n Intent intent = new Intent(this, Login.class);\r\n startActivity(intent);\r\n}\r\n\r\npublic void openSignUpActivity(View view) {\r\n Intent intent = new Intent(this, SignUp.class);\r\n startActivity(intent);\r\n}<\/code><\/pre>\nCambiar la clase padre de Login.java<\/code> y Registro.java<\/code> de AppCompatActivity<\/code> a Actividad<\/code>.<\/p>\nEn res\/values\/styles.xml (v21)<\/code>cambia el tema principal a Theme.AppCompat.Light.DarkActionBar<\/code>.<\/p>\nAbrir activity_sign_up.xml<\/code> y a\u00f1ada lo siguiente dentro de RelativeLayout<\/strong> etiqueta:<\/p>\n\r\n\r\n \r\n\r\n \r\n\r\n \r\n \r\n\r\n \r\n\r\n \r\n \r\n\r\n \r\n\r\n \r\n \r\n\r\n \r\n\r\n <\/button><\/code><\/pre>\nAhora ejecute la aplicaci\u00f3n y seleccione la opci\u00f3n Inscribirse<\/strong> ver\u00e1 los elementos EditText de Material Design.<\/p>\nCrear una nueva clase java llamada NetworkHelper<\/code> con lo siguiente:<\/p>\npublic static final MediaType JSON = MediaType.parse(\"application\/json; charset=utf-8\");\r\n\r\nOkHttpClient client = new OkHttpClient();\r\n\r\nCall post(String url, String json, Callback callback) {\r\n RequestBody body = RequestBody.create(JSON, json);\r\n Request request = new Request.Builder()\r\n .url(url)\r\n .post(body)\r\n .build();\r\n Call call = client.newCall(request);\r\n call.enqueue(callback);\r\n return call;\r\n}<\/code><\/pre>\nAntes de poder realizar peticiones HTTP en tu aplicaci\u00f3n Android, primero tienes que a\u00f1adir la propiedad Red<\/strong> permiso en AndroidManifest.xml<\/code>:<\/p>\n<\/code><\/pre>\nAhora de vuelta en Registro.java<\/code>a\u00f1ade las siguientes propiedades:<\/p>\nNetworkHelper networkHelper = new NetworkHelper();\r\n\r\nEditText nameInput;\r\nEditText passwordInput;\r\nEditText confirmPasswordInput;<\/code><\/pre>\nFije el EditarTexto<\/strong> componentes en el onCreate<\/code> m\u00e9todo:<\/p>\nnameInput = (EditText) findViewById(R.id.nameInput);\r\npasswordInput = (EditText) findViewById(R.id.passwordInput);\r\nconfirmPasswordInput = (EditText) findViewById(R.id.confirmPasswordInput);<\/code><\/pre>\nAplicar la inscr\u00edbase en<\/code> para enviar una solicitud POST a :8000\/inscripci\u00f3n<\/code> con el nombre y la contrase\u00f1a proporcionados:<\/p>\npublic void signup(View view) {\r\n if (!passwordInput.getText().toString().equals(confirmPasswordInput.getText().toString())) {\r\n Toast.makeText(getApplicationContext(), \"The passwords do not match\", Toast.LENGTH_LONG).show();\r\n } else {\r\n String json = \"{\"name\": \"\" + nameInput.getText() + \"\", \"password\":\"\" + passwordInput.getText() + \"\"}\";\r\n networkHelper.post(\"https:\/\/10.0.3.2:8000\/signup\", json, new Callback() {\r\n @Override\r\n public void onFailure(Request request, IOException e) {\r\n }\r\n @Override\r\n public void onResponse(Response response) throws IOException {\r\n String responseStr = response.body().string();\r\n final String messageText = \"Status code : \" + response.code() +\r\n \"n\" +\r\n \"Response body : \" + responseStr;\r\n runOnUiThread(new Runnable() {\r\n @Override\r\n public void run() {\r\n Toast.makeText(getApplicationContext(), messageText, Toast.LENGTH_LONG).show();\r\n }\r\n });\r\n }\r\n });\r\n }\r\n}<\/code><\/pre>\nEjecute la aplicaci\u00f3n e introduzca un nombre y una contrase\u00f1a. Si la cuenta de usuario se ha creado correctamente, recibir\u00e1 un mensaje 201 Creado<\/code> y deber\u00eda ver el usuario reci\u00e9n creado en el panel de administraci\u00f3n:<\/p>\n
Por \u00faltimo, terminemos con la pantalla de inicio de sesi\u00f3n. En activity_login.xml<\/code>a\u00f1ada lo siguiente en RelativeLayout<\/strong>:<\/p>\n\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n<\/button><\/code><\/pre>\nA\u00f1ade las propiedades a Login.java<\/code>:<\/p>\nNetworkHelper networkHelper = new NetworkHelper();\r\n\r\nEditText nameInput;\r\nEditText passwordInput;<\/code><\/pre>\nY realice la misma operaci\u00f3n de vinculaci\u00f3n de vistas en onCreate<\/code>:<\/p>\nnameInput = (EditText) findViewById(R.id.nameInput);\r\npasswordInput = (EditText) findViewById(R.id.passwordInput);<\/code><\/pre>\nAplicar la inicio de sesi\u00f3n<\/code> m\u00e9todo:<\/p>\npublic void login(View view) {\r\n String json = \"{\"name\": \"\" + nameInput.getText() + \"\", \"password\":\"\" + passwordInput.getText() + \"\"}\";\r\n networkHelper.post(\"https:\/\/10.0.3.2:8000\/smarthome\/_session\", json, new Callback() {\r\n @Override\r\n public void onFailure(Request request, IOException e) {\r\n }\r\n @Override\r\n public void onResponse(Response response) throws IOException {\r\n String responseStr = response.body().string();\r\n final String messageText = \"Status code : \" + response.code() +\r\n \"n\" +\r\n \"Response body : \" + responseStr;\r\n runOnUiThread(new Runnable() {\r\n @Override\r\n public void run() {\r\n Toast.makeText(getApplicationContext(), messageText, Toast.LENGTH_LONG).show();\r\n }\r\n });\r\n }\r\n });\r\n}<\/code><\/pre>\nEjecute la aplicaci\u00f3n e inicie sesi\u00f3n con el nombre de usuario y la contrase\u00f1a que eligi\u00f3 anteriormente. Si la autenticaci\u00f3n se ha realizado correctamente, recibir\u00e1s un c\u00f3digo de estado 200 OK:<\/p>\n
NOTA:<\/strong> Todos los SDKs de Couchbase Lite tienen un m\u00e9todo en el directorio Replicaci\u00f3n<\/code> que toma un nombre y una contrase\u00f1a y realiza la autenticaci\u00f3n por usted, por lo que probablemente no tendr\u00e1 que hacer esa solicitud POST a \/smarthome\/sesi\u00f3n<\/code>.<\/p>\nConclusi\u00f3n<\/h2>\n En este tutorial, ha aprendido a utilizar la API REST de Admin para crear usuarios a trav\u00e9s de una pantalla de registro en una aplicaci\u00f3n Android.<\/p>","protected":false},"excerpt":{"rendered":"
With the Sync Gateway API, you can authenticate on the client side as a specific user to replicate the data this user has access to. In the case of basic authentication, the user must already exist in the Sync Gateway […]<\/p>","protected":false},"author":51,"featured_media":13873,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[1810],"tags":[],"ppma_author":[9028],"class_list":["post-1966","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-couchbase-mobile"],"acf":[],"yoast_head":"\n
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