Android 本地客户端搭建小型服务器

Android 搭建Http服务器，接收各端的 HTTP 请求访问以及 挂载HTML网页

• 依赖库

implementation 'org.nanohttpd:nanohttpd:2.3.1'

• 服务器实现

public class HttpServer extends NanoHTTPD {
private static final int HTTP_PORT = 8080;//端口，尽量设置一个不常规的HttpServer() {super(HTTP_PORT); }}/*** 数据接收** @param session* @return*/@Overridepublic Response serve(IHTTPSession session) {return parseRequest(session);}/*** 数据解析* @param session* @return*/private NanoHTTPD.Response parseRequest(NanoHTTPD.IHTTPSession session) {NanoHTTPD.Response response = null;if (session.getMethod() == NanoHTTPD.Method.GET) {response = parseGetRequest(session);} else if (session.getMethod() == NanoHTTPD.Method.POST) {response = parsePostRequest(session);} else {response = responseForNotFound();}return response;}/*** 解析post请求*  /xxx/接口1：代表 两端定义的访问接口，例如：/user/info* @param session* @return*/private Response parsePostRequest(IHTTPSession session) {final Map<String, String> files = parseBody(session);NanoHTTPD.Response response = null;String paramsMiss = "";Map<String, String> params = session.getParms();if (session.getParms() == null) {return responseParamsNotFound(ResourceUtil.getString(R.string.server_params_error));}switch (session.getUri()) {case "/xxx/接口1"://根据自己业务返回不同的需求response = responseForConfig(HttpResult.getConfigResult());break;case "/xxx/接口2":response=responseForConfig(HttpResult.getNetConfig(mEthernetHelper));break;default:response = responseForNotFound();break;}return response;}/*** 返回指令未知** @return*/private NanoHTTPD.Response responseForNotFound() {NanoHTTPD.Response.Status status = NanoHTTPD.Response.Status.NOT_FOUND;final String mimeType = "text/html";return NanoHTTPD.newFixedLengthResponse(status, mimeType, "NOT_FOUND");}/**
*返回指定的错误信息
*/
rivate NanoHTTPD.Response responseParamsNotFound(String msg) {NanoHTTPD.Response.Status status = NanoHTTPD.Response.Status.NOT_FOUND;final String mimeType = "text/html";return NanoHTTPD.newFixedLengthResponse(status, mimeType, msg);}/***返回json串 *result:可以是任意Bean转成的字符串，* @return*/private Response responseForConfig(String result) {NanoHTTPD.Response.Status status = NanoHTTPD.Response.Status.OK;String mimeType = "application/json;charset=UTF-8";LogHelper.v(TAG, "正在向客户端发送数据 -> " + result);return NanoHTTPD.newFixedLengthResponse(status, mimeType, result);}/*** 解析get 请求** @param session* @return*/private Response parseGetRequest(IHTTPSession session) {return getHtmlFileStream(session);}/*** 解析访问的mintype类型* @param session* @return*/private Response getHtmlFileStream(IHTTPSession session) {String uri = session.getUri();String filename = uri.substring(1);boolean is_ascii = true;if (uri.equals("/")) {filename = "index.html";}String mimetype = "text/html";if (filename.contains(".html") || filename.contains(".htm")) {mimetype = "text/html";is_ascii = true;} else if (filename.contains(".js")) {mimetype = "text/javascript";is_ascii = true;} else if (filename.contains(".css")) {mimetype = "text/css";is_ascii = true;} else if (filename.contains(".gif")) {mimetype = "text/gif";is_ascii = false;} else if (filename.contains(".jpeg") || filename.contains(".jpg")) {mimetype = "text/jpeg";is_ascii = false;} else if (filename.contains(".png")) {mimetype = "image/png";is_ascii = false;} else if (filename.contains(".svg")) {mimetype = "image/svg+xml";is_ascii = false;} else {filename = "index.html";mimetype = "text/html";}if (is_ascii) {return loadHtml(filename, mimetype);} else {return loadOrder(filename, mimetype);}}/*** 加载非html 类型** @param filename* @param mimetype* @return*/private Response loadOrder(String filename, String mimetype) {AssetManager assetManager = BasicApplication.getAppContext().getAssets();InputStream isr;try {isr = assetManager.open(filename);return newFixedLengthResponse(Response.Status.OK, mimetype, isr, isr.available());} catch (IOException e) {e.printStackTrace();return newFixedLengthResponse(Response.Status.OK, mimetype, "");}}/*** 加载html** @param filename* @param mimetype* @return*/private Response loadHtml(String filename, String mimetype) {AssetManager assetManager = BasicApplication.getAppContext().getAssets();//通过AssetManager直接打开文件进行读取操作StringBuilder response = new StringBuilder();String line = "";BufferedReader reader = null;try {reader = new BufferedReader(new InputStreamReader(assetManager.open(filename, AssetManager.ACCESS_BUFFER)));while ((line = reader.readLine()) != null) {response.append(line);}reader.close();} catch (IOException e) {e.printStackTrace();return newFixedLengthResponse(Response.Status.OK, mimetype, "");}return newFixedLengthResponse(Response.Status.OK, mimetype, response.toString());}}

到此，一个既有post请求也有 HTML网页访问 的HTTP服务器 搭建完毕。

• 返回Result

   /*** 此类属于完全自定义，根据自己业务写*/
public class HttpResult<T> {private static final int RESULT_CODE_SUCCESS = 0;private static final int RESULT_CODE_FILE = 1;/*** 状态码*/public int code;/*** 返回结果信息*/public String msg;/*** 预留*//*** 结果信息**/public T results;/*** 获取成功** @return*/public static final String getSuccess() {final HttpResult httpResult = new HttpResult<>();httpResult.code = RESULT_CODE_SUCCESS;httpResult.msg = ResourceUtil.getString(R.string.server_result_success);return JsonUtil.objectToJson(httpResult);}/*** 请求失败** @return*/public static String getFail(String paramsMiss) {final HttpResult httpResult = new HttpResult<>();httpResult.code = RESULT_CODE_FILE;httpResult.msg = ResourceUtil.getString(R.string.server_result_fail) + (TextUtils.isEmpty(paramsMiss) ? "" : ("," + paramsMiss));return JsonUtil.objectToJson(httpResult);}}

• 启动服务
  一般来说，NanoHttp 服务器在Android 上最好放在Service 上去启动或停止 如下：

ublic class HttpService extends Service {private HttpServer httpServer;@Nullable@Overridepublic IBinder onBind(Intent intent) {return null;}@Overridepublic void onCreate() {super.onCreate();httpServer = new HttpServer();try {httpServer.start(30000);} catch (IOException e) {e.printStackTrace();}}@Overridepublic void onDestroy() {if (httpServer != null) {httpServer.stop();}super.onDestroy();}@Overridepublic int onStartCommand(Intent intent, int flags, int startId) {return Service.START_STICKY;}/*** 启动服务** @param context*/public static final void startService(Context context) {Intent intent = new Intent(context,HttpService.class);context.startService(intent);}/*** 关闭服务*/public static void stopService(Context context) {Intent intent = new Intent(context, HttpService.class);context.stopService(intent);}

以上就是关于一个简单的NanoHTTP 搭建的场景

本文来自互联网用户投稿，文章观点仅代表作者本人，不代表本站立场，不承担相关法律责任。如若转载，请注明出处。 如若内容造成侵权/违法违规/事实不符，请点击【内容举报】进行投诉反馈！