使用网站将 youtube 转换为 mp3 [英] youtube to mp3 conversion using web site
问题描述
我正在尝试制作可以将 youtube 视频下载为 mp3 文件的程序.我使用了这个网站 youtube-mp3.org 来实现这一目标.所以，我下载了 www.youtube-mp3.org/?c#v=sTbd2e2EyTk 的内容 其中 sTbd2e2EyTk 是视频 ID，现在我必须获得指向 mp3 文件的链接(在这种情况下 http://www.youtube-mp3.org/get?video_id.....) 但下载的内容中没有链接.我注意到chrome开发人员工具(ctrl+shift+j，tab Elements)显示chrome中的链接和查看源(ctrl+u)选项给了我与使用java下载页面相同的结果.我怎样才能得到那个链接?我尝试使用 JSoap 获取数据，但是我需要的那些数据没有立即加载到页面上，所以我无法获取它们.
I'm trying to make program that can download youtube videos as mp3 files. I used this site youtube-mp3.org in order to achive that. So, i downloaded content of www.youtube-mp3.org/?c#v=sTbd2e2EyTk where sTbd2e2EyTk is video id, now i have to get link to mp3 file(in this case http://www.youtube-mp3.org/get?video_id.....) but there is no link in downloaded content. I noticed that chrome developers tools(ctrl+shift+j, tab Elements) show that link and view source(ctrl+u) option in chrome gives me the same result which i get by downloading page using java. How can i get that link? I tried to fetch data using JSoap but those data that i need are not loaded on page immediately so i cannot get them.
接下来的代码是下载网页内容...
Next code is for downloading content of web page...
URL tU = new URL("http://www.youtube-mp3.org/?c#v=sTbd2e2EyTk");
HttpURLConnection conn = (HttpURLConnection) tU.openConnection();
InputStream ins = conn.getInputStream();
BufferedReader rd = new BufferedReader(new InputStreamReader(ins));
String line;
StringBuffer content = new StringBuffer();
while ((line = rd.readLine()) != null) {
content.append(line);
}
System.out.println(content.toString());
我用这个方法来获取文件，但我需要链接..
I used this method for getting file but i need link..
private static void downloadStreamData(String url, String fileName) throws Exception {
URL tU = new URL(url);
HttpURLConnection conn = (HttpURLConnection) tU.openConnection();
String type = conn.getContentType();
InputStream ins = conn.getInputStream();
FileOutputStream fout = new FileOutputStream(new File(fileName));
byte[] outputByte = new byte[4096];
int bytesRead;
int length = conn.getContentLength();
int read = 0;
while ((bytesRead = ins.read(outputByte, 0, 4096)) != -1) {
read += bytesRead;
System.out.println(read + " out of " + length);
fout.write(outputByte, 0, bytesRead);
}
fout.flush();
fout.close();
}
推荐答案
找到这个
package main.java.com.thezujev.theyoutubepld.logic;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.Map;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpVersion;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.HttpParams;
import org.apache.http.params.HttpProtocolParams;
import org.apache.http.params.SyncBasicHttpParams;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
/**
* @author azujev
*
*/
public class YouTubeMP3 {
public static String[] getLink(String url) throws ClientProtocolException, IOException {
boolean passCode = false;
String h = "";
String title = "";
String result = "";
String[] returnVal = {"",""};
Map<String, String> jsonTable;
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpGet httpInitialGet = new HttpGet("http://www.youtube-mp3.org/api/pushItem/?item=http%3A//www.youtube.com/watch%3Fv%3D" + url + "&xy=_");
httpInitialGet.addHeader("Accept-Location", "*");
httpInitialGet.addHeader("Referrer", "http://www.youtube-mp3.org");
HttpParams params = new SyncBasicHttpParams();
HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
HttpProtocolParams.setUserAgent(params, "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/22.0.1207.1 Safari/537.1");
httpInitialGet.setParams(params);
HttpResponse firstResponse = httpClient.execute(httpInitialGet);
try {
if (firstResponse.getStatusLine().toString().contains("200")) {
passCode = true;
}
} finally {
httpInitialGet.releaseConnection();
}
if (passCode) {
while (true) {
HttpGet httpStatusGet = new HttpGet("http://www.youtube-mp3.org/api/itemInfo/?video_id=" + url + "&adloc=");
httpStatusGet.addHeader("Accept-Location", "*");
httpStatusGet.addHeader("Referrer", "http://www.youtube-mp3.org");
httpStatusGet.setParams(params);
HttpResponse secondResponse = httpClient.execute(httpStatusGet);
HttpEntity secondEntity = secondResponse.getEntity();
InputStream is = secondEntity.getContent();
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "
");
}
is.close();
result = sb.toString();
} catch (Exception e) {
e.printStackTrace();
}
httpStatusGet.releaseConnection();
result = result.replaceAll("\}.*", "}");
result = result.replaceAll(".*?\{", "{");
try {
JSONObject jsonData = new JSONObject(result);
JSONArray jsonArray = jsonData.names();
JSONArray valArray = jsonData.toJSONArray(jsonArray);
jsonTable = new HashMap<String, String>(jsonArray.length());
for (int i = 0; i < jsonArray.length(); i++) {
jsonTable.put(jsonArray.get(i).toString(), valArray.get(i).toString());
}
if (jsonTable.get("status").equals("serving")) {
h = jsonTable.get("h");
title = jsonTable.get("title");
break;
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
returnVal[0] = "http://www.youtube-mp3.org/get?video_id=" + url + "&h=" + h;
returnVal[1] = title;
return returnVal;
} else {
//TODO: Error, vid not downloadable
}
return null;
}
}
这篇关于使用网站将 youtube 转换为 mp3的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
