NanoHttpd Demo是個好東西
前幾天，在做一個視頻BT項目的時候，看各種博文之類的，突然就看到提出了一個NanoHttpd視頻服務器的博文。於是就跟進去看了一下，發現，裏面就一個鏈接。
GitHub地址：https://github.com/NanoHttpd/nanohttpd
然後就沒了。。。
本來像這種標題黨，我已經舉報他。可是，我又很想知道，所以我就跟進去看了一下，NanoHttpd，嗯，一個Java文件的項目，嗯。
然後研究了一下源碼，發現，從所未有的爽，的確，給個鏈接就夠了。
這裏貼一個簡單的Demo，來自NanoHttpd。
package fi.iki.elonen;
/*
* #%L
* NanoHttpd-Samples
* %%
* Copyright (C) 2012 - 2015 nanohttpd
* %%
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. Neither the name of the nanohttpd nor the names of its contributors
* may be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* #L%
*/
import java.util.Map;
import java.util.logging.Logger;
import fi.iki.elonen.util.ServerRunner;
/**
* An example of subclassing NanoHTTPD to make a custom HTTP server.
*/
public class HelloServer extends NanoHTTPD {
/**
* logger to log to.
*/
private static final Logger LOG = Logger.getLogger(HelloServer.class.getName());
public static void main(String[] args) {
ServerRunner.run(HelloServer.class);
}
public HelloServer() {
super(8080);
}
@Override
public Response serve(IHTTPSession session) {
Method method = session.getMethod();
String uri = session.getUri();
HelloServer.LOG.info(method + " '" + uri + "' ");
String msg = "<html><body><h1>Hello server</h1>\n";
Map<String, String> parms = session.getParms();
if (parms.get("username") == null) {
msg += "<form action='?' method='get'>\n" + " <p>Your name: <input type='text' name='username'></p>\n" + "</form>\n";
} else {
msg += "<p>Hello, " + parms.get("username") + "!</p>";
}
msg += "</body></html>\n";
return newFixedLengthResponse(msg);
}
}只要你導包，然後運行上面的東西就可以用瀏覽器訪問8080端口，就能看到輸出了，簡單明瞭。
因此我就對他進行了一些改動，變成一個視頻網站的項目，代碼如下。
package com.chen.video.resource;
import fi.iki.elonen.NanoHTTPD;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import static fi.iki.elonen.NanoHTTPD.newChunkedResponse;
/**
* Created by CHEN on 2016/8/14.
*/
public class VideoResource {
public static NanoHTTPD.Response getVideo(String videoURI) {
try {
FileInputStream fis = new FileInputStream(videoURI);
return newChunkedResponse(NanoHTTPD.Response.Status.OK, "movie.mp4", fis);
}
catch (FileNotFoundException e) {
e.printStackTrace();
return null;
}
}
}package com.chen.video;
import fi.iki.elonen.NanoHTTPD;
import fi.iki.elonen.NanoHTTPD.Response.Status;
import fi.iki.elonen.util.ServerRunner;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
/**
* Created by CHEN on 2016/8/14.
*/
public class VideoServer extends NanoHTTPD{
public static final int DEFAULT_SERVER_PORT = 8080;
public static final String TAG = VideoServer.class.getSimpleName();
public String filePath= "movie.mp4";
private static final String REQUEST_ROOT = "/";
private String mVideoFilePath;
private int mVideoWidth = 0;
private int mVideoHeight = 0;
private static final int VIDEO_WIDTH= 320;
private static final int VIDEO_HEIGHT = 240;
public VideoServer() {
super(DEFAULT_SERVER_PORT);
mVideoFilePath = filePath;
mVideoWidth = VIDEO_WIDTH;
mVideoHeight = VIDEO_HEIGHT;
}
@Override
public Response serve(IHTTPSession session) {
if(REQUEST_ROOT.equals(session.getUri())) {
return responseRootPage(session);
}
else if("/movie.mp4".equals(session.getUri())) {
return responseVideoStream(session);
}
return response404(session,session.getUri());
}
public Response responseRootPage(IHTTPSession session) {
String rootURL=this.getClass().getResource("/").getPath();
File file = new File(rootURL+"/com/chen/video/"+mVideoFilePath);
/* if(!file.exists()) {
return response404(session,mVideoFilePath);
}*/
StringBuilder builder = new StringBuilder();
builder.append("<!DOCTYPE html><html><body>");
builder.append("<video ");
builder.append("width="+getQuotaStr(String.valueOf(mVideoWidth))+" ");
builder.append("height="+getQuotaStr(String.valueOf(mVideoHeight))+" ");
builder.append("controls>");
builder.append("<source src="+getQuotaStr("/movie.mp4")+" ");
builder.append("type="+getQuotaStr("video/mp4")+">");
builder.append("Your browser doestn't support HTML5");
builder.append("</video>");
builder.append("</body></html>\n");
return newFixedLengthResponse(builder.toString());
}
public Response responseVideoStream(IHTTPSession session) {
try {
FileInputStream fis = new FileInputStream(this.getClass().getResource("/").getPath()+"/com/chen/video/"+mVideoFilePath);
return newChunkedResponse(Status.OK, "movie.mp4", fis);
}
catch (FileNotFoundException e) {
e.printStackTrace();
return response404(session,mVideoFilePath);
}
}
public Response response404(IHTTPSession session,String url) {
StringBuilder builder = new StringBuilder();
builder.append("<!DOCTYPE html><html><body>");
builder.append("Sorry, Can't Found "+url + " !");
builder.append("</body></html>\n");
return newFixedLengthResponse(builder.toString());
}
protected String getQuotaStr(String text) {
return "\"" + text + "\"";
}
public static void main(String[] args) {
ServerRunner.run(VideoServer.class);
}
}
package com.chen.video;
import com.chen.video.resource.VideoResource;
import fi.iki.elonen.NanoHTTPD;
import fi.iki.elonen.util.ServerRunner;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import static com.chen.video.resource.VideoResource.getVideo;
import static jdk.nashorn.internal.objects.NativeString.substring;
/**
* Created by CHEN on 2016/8/14.
*/
public class MyVideoServer extends NanoHTTPD {
public static void main(String[] args) {
ServerRunner.run(MyVideoServer.class);
}
public MyVideoServer() {
super(8088);
}
@Override
public Response serve(IHTTPSession session) {
//在這裏做一些跳轉的控制
/*註釋說明：這裏感覺太耗資源了，沒必要，所以改成以下形式
if(session.getUri().contains("page")) {//說明是頁面
} else if(session.getUri().contains("resource")) {
}*/
//TODO 規定一級路徑爲類，二級路徑爲方法
//TODO 規定資源都是一級路徑
//現在暫時簡單實現，畢竟是教學
String uri = session.getUri();
String[] uriSplit = uri.split("/");
Response response = null;
switch (uriSplit[1].charAt(0)){
case 'p': {//page
String classURI = uriSplit[2].substring(0, 1).toUpperCase() + uriSplit[2].substring(1) + "Controller";
try {
Class clazz = Class.forName("com.chen.video.controller."+classURI);
java.lang.reflect.Method method = clazz.getMethod("getVideoPage");
response = (Response) method.invoke(null);
} catch (Exception e) {
//TODO 其實拋出了很多的異常 但是爲了代碼不要被異常包圍，先統一處理
e.printStackTrace();
}
}
break;
case 'r': {//resource
//本來應該有一個資源分類的 比如說是音頻還是書籍 但是這裏也統一處理了 默認是音頻
String resourceURI=uriSplit[2];
response= VideoResource.getVideo(this.getClass().getResource("/").getPath()+"com/chen/video/"+resourceURI);
}
break;
default: {}break;
}
//異常處理
if(null!=response) {
return response;
} else {
//TODO 處理
return null;
}
}
}
請注意一點，NanoHttpd是一個BIO項目。