I have this code:
import java.net.URI;
import java.util.List;
import net.moraleboost.streamscraper.Stream;
import net.moraleboost.streamscraper.Scraper;
import net.moraleboost.streamscraper.scraper.IceCastScraper;
public class Harvester
{
public static void main(String[] args) throws Exception
{
Scraper scraper = new IceCastScraper();
List<Stream> streams = scraper.scrape(new URI("http://host:port/"));
for (Stream stream: streams) {
System.out.println("Song Title: " + stream.getCurrentSong());
System.out.println("URI: " + stream.getUri());
}
}
}
Where do I download JAR for import net.moraleboost.streamscraper.* to work? I can find source code for it but I gives me load of errors, can someone just provide me .jar so I could include in java build path library?
You can clone the repository at https://code.google.com/p/streamscraper/
You can also download the code from here: https://code.google.com/p/streamscraper/source/browse/
Related
Any way to get the file creation date or last modification date without using getModificationTime in Java.
I'm using org.apache.commons.net.ftp.FTPClient class. My issue is, I'm unable to use getModificationTime to get the time stamp before downloading the file..
You can use Apache Commons Net library, here is a sample code:
package com.grebski.ftp;
import org.apache.commons.net.ftp.FTPClient;
import java.io.IOException;
import java.time.Instant;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.util.Arrays;
public class FtpTest {
public static void main(String[] args) throws IOException {
String ftpUrl = "speedtest.tele2.net";
FTPClient ftpClient = new FTPClient();
ftpClient.connect(ftpUrl);
ftpClient.user("anonymous");
ftpClient.pass("anonymous#a.com");
Arrays.stream(ftpClient.listFiles()).forEach(file -> {
LocalDateTime creationDateTime = Instant.ofEpochMilli(file.getTimestamp().getTimeInMillis()).atZone(ZoneId.systemDefault()).toLocalDateTime();
String msg = String.format("%s %s", file.getName(), creationDateTime);
System.out.println(msg);
}
);
}
}
Did you get a chance to find the size of the file and the network speed? They are important aspects to learn the download time.
I want to create a RapidMiner classifier on Java that classifies a user based on his/her touch input. I have searched for days now, I have RapidMiner Studio and have downloaded the rapidMiner-studio from github - but I don't know which one should I include on my library/build path.
Do I just include all of them? Any help would be greatly appreciated.
I found the answer to my question, so far I found out that you can run a process ( a .rmp) file you created from RapidMiner in Eclipse, and the JAR files i added are located at C:\Program Files\RapidMiner\RapidMiner Studio\lib
Here's my code:
package rapid_process;
import com.rapidminer.Process;
import com.rapidminer.RapidMiner;
import com.rapidminer.operator.Operator;
import com.rapidminer.operator.OperatorException;
//import com.rapidminer.operator.io.ExcelExampleSource;
import com.rapidminer.tools.XMLException;
import java.io.File;
import java.io.IOException;
import java.lang.Object;
public class process {
public static void main(String[] args) throws IOException, XMLException, OperatorException {
/*// Path to process-definition
final String processPath = "C:/Users/Evie/.RapidMiner/repositories/Local Repository/processes/Compare ROCs.rmp";
// Init RapidMiner
RapidMiner.setExecutionMode(ExecutionMode.COMMAND_LINE);
RapidMiner.init();
// Load process
final com.rapidminer.Process process = new com.rapidminer.Process(new File(processPath));
process.run();*/
try {
RapidMiner.setExecutionMode(RapidMiner.ExecutionMode.COMMAND_LINE);
RapidMiner.init();
Process process = new Process(new File("C:/Users/YourUser/.RapidMiner/repositories/Local Repository/processes/Compare ROCs.rmp"));
process.run();
} catch (IOException | XMLException | OperatorException ex) {
ex.printStackTrace();
}
}
}
I tried to to include an exe-file into a jar-Application and to run it. The idea is to extract it temporary at first and then to run the temp-exe-file. How to do that? That is what I have tried. There is my code. It occurs the exception java.io.FileNotFoundException because of the source file "ffmpeg.exe". I verified, but the file is included and the directory is correct.
package extractffmpeg;
import java.io.File;
import java.io.IOException;
import java.net.URISyntaxException;
import java.net.URL;
import javafx.application.Application;
import javafx.application.Platform;
import javafx.stage.Stage;
import org.apache.commons.io.FileUtils;
public class ExtractFFmpeg extends Application {
public void start(Stage primaryStage) throws IOException, URISyntaxException {
extractExe();
System.out.println("extract successfull");
Platform.exit();
}
public static void main(String[] args) {
launch(args);
}
public void extractExe() throws URISyntaxException, IOException{
final String resourcesPath = "ffmpeg/ffmpeg.exe";
URL url = ExtractFFmpeg.class.getResource(resourcesPath);
File source = new File(url.toString());
System.out.println("shows url of ffmpeg: " + url.getPath());
System.out.println("shows file of ffmpeg: " + source);
File destination = new File("C:/Users/FNI2Abt/Desktop/ffmpeg.exe");
FileUtils.copyFile(source, destination);
}
}
The idea is to create a self-extracting archive. The archive shall contain both JAR and EXE. The JAR file shall contain a class which would call Process.exec(...) on the adjacent EXE. Starting there, you can follow this tutorial:
How do I make a self extract and running installer
I’m using java.net.URL.openStream() to access a HTTPS resource. The returned stream is incomplete for some URLs: for the example below, it yields a 1,105,724 byte-file whereas the same URL accessed from a browser yields a 5,755,858 byte-file (even when "disabling" Content-Encoding).
And it doesn’t even throw an exception.
What am I missing?
import static java.nio.file.Files.copy;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.nio.file.Paths;
public class Test {
public static void main(String... args) throws IOException {
try (final InputStream in = new URL(
"https://upload.wikimedia.org/wikipedia/commons/9/95/Germany_%28orthographic_projection%29.svg").openStream()) {
copy(in, Paths.get("germany.svg"));
}
}
}
Edit
I’ve tested this code a lot of times (on different networks, but always on JRE 1.8.0_60 / Mac OS X 10.11.4), and sometimes it’s suddenly "starting to work".
However, switching to another of my problematic URLs (e.g. "https://upload.wikimedia.org/wikipedia/commons/c/ce/Andorra_in_Europe_%28zoomed%29.svg") enables me to reproduce the issue.
Does this mean that it is a server issue? I’ve never seen it on a browser though.
It's working fine.
As others have suggested there may be a problem with your network, try connecting to another network.
package test;
import java.io.InputStream;
import java.net.URL;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;
public class TestMain2 {
public static void main(String[] args) {
System.out.println("Started");
try (final InputStream in = new URL(
"https://upload.wikimedia.org/wikipedia/commons/9/95/Germany_%28orthographic_projection%29.svg")
.openStream()) {
Path outputFile = Paths.get("test.svg");
Files.copy(in, outputFile, StandardCopyOption.REPLACE_EXISTING);
System.out.println("Output file size : " + outputFile.toFile().length());
System.out.println("Finished");
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
Output
Started
Output file size : 5755858
Finished
I'm learning Java and sometimes I have some problem to retrieve the information I need from objects...
When I debug my code I can see in targetFile, a path property but I don't know how to get it in my code.
This is a screenshot:
(source: toile-libre.org)
This is my complete code:
package com.example.helloworld;
import com.github.axet.wget.WGet;
import com.github.axet.wget.info.DownloadInfo;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import java.io.File;
import java.io.IOException;
import java.net.URL;
public class HelloWorld {
public static void main(String[] args) throws IOException {
nodejs();
}
public static void nodejs() throws IOException {
// Scrap the download url.
Document doc = Jsoup.connect("http://nodejs.org/download").get();
Element link = doc.select("div.interior:nth-child(2) > table:nth-child(2) > tbody:nth-child(1) > tr:nth-child(1) > td:nth-child(3) > a:nth-child(1)").first();
String url = link.attr("abs:href");
// Print the download url.
System.out.println(url);
// Download file via the scraped url.
URL download = new URL(url);
File target = new File("/home/lan/Desktop/");
WGet w = new WGet(download, target);
w.download();
// Get the targetFile property
// ???
}
}
How can I get this value?
I do not know your code but the field you are interested in may be encapsulated and thus not accessible in your code, but the debugger can see it at runtime :)
Update:
https://github.com/axet/wget/blob/master/src/main/java/com/github/axet/wget/WGet.java
The field is default package, you can only access it from within the package.
This can be frustrating at times, but you should ask yourself why the designers of this class decided to hide this field.