We Keep Coding

how to zip file download without real file

I make zip download.
My code works correctly.
Here is my code.
package com.example.controller;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import javax.servlet.http.HttpServletRequest;
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOUtils;
import org.springframework.core.io.ClassPathResource;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
import com.example.common.CommonException;
import net.lingala.zip4j.ZipFile;
#Controller
#RequestMapping("/example")
public class ExampleController {
#RequestMapping(value="/myDownload", method = RequestMethod.GET)
public ResponseEntity<byte[]> myDownload(HttpServletRequest request) throws CommonException {
HttpHeaders headers = new HttpHeaders();
ResponseEntity<byte[]> result = null;
try {
ClassPathResource myShareDir1CPR = new ClassPathResource("static/share1");
ClassPathResource myShareDir2CPR = new ClassPathResource("static/share2");
ClassPathResource myShareDir3CPR = new ClassPathResource("static/share3");
ClassPathResource myShareDir4CPR = new ClassPathResource("static/share4");
File share1Dir = myShareDir1CPR.getFile();
File share2Dir = myShareDir2CPR.getFile();
File share3Dir = myShareDir3CPR.getFile();
File share4Dir = myShareDir4CPR.getFile();
ZipFile zipFile = new ZipFile("myTempFile.zip");
zipFile.addFolder(share1Dir);
zipFile.addFolder(share2Dir);
zipFile.addFolder(share3Dir);
zipFile.addFolder(share4Dir);
byte[] binaryData = IOUtils.toByteArray(new FileInputStream(zipFile.getFile()));
headers.add(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=output_file.zip;");
result = new ResponseEntity<byte[]>(binaryData, headers, HttpStatus.OK);
} catch (IOException e) {
// TODO Auto-generated catch block
throw new CommonException(e.getMessage());
}
return result;
}
}
But I don't want to leave the file on the server.
What I have done is:
File createTempFile = File.createTempFile("test", ".zip");
ZipFile zipFile = new ZipFile(createTempFile);
However, an error occurs:
Zip file size less than minimum expected zip file size. Probably not a zip file or a corrupted zip file

How to send an image with JDA

im developing my Java bot for discord. And I want to send an image. I tried using TextChannel.sendFile(File, Message), but it`s not that result that I want to get. I want this file to be displayed like a normal image.
The imports:
import java.io.File;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ThreadLocalRandom;
import javax.xml.namespace.QName;
import javax.xml.stream.FactoryConfigurationError;
import javax.xml.stream.XMLEventReader;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.events.Attribute;
import javax.xml.stream.events.StartElement;
import javax.xml.stream.events.XMLEvent;
import org.apache.commons.io.FileUtils;
import net.dv8tion.jda.core.MessageBuilder;
import net.dv8tion.jda.core.entities.Message;
import net.dv8tion.jda.core.entities.TextChannel;
import net.dv8tion.jda.core.events.message.MessageReceivedEvent;
And the other code:
URL url = new URL(s.toString());
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
XMLEventReader reader = XMLInputFactory.newInstance().createXMLEventReader(conn.getInputStream());
final List<String> files = new ArrayList<>();
while (reader.hasNext()) {
XMLEvent e = reader.nextEvent();
if (e.isStartElement()) {
StartElement se = e.asStartElement();
if (se.getName().getLocalPart().equals("post")) {
Attribute purl = se.getAttributeByName(new QName("file_url"));
files.add(purl.getValue());
}
}
}
int rid = ThreadLocalRandom.current().nextInt(files.size() - 1);
String p = files.get(rid);
files.clear();
URL u = new URL(p);
final String[] dots = p.split("\\.");
final String format = dots[dots.length - 1];
File f = new File("its not a porn." + format);
FileUtils.copyURLToFile(url, f);
Message m = new MessageBuilder().append("okay :)").build();
c.sendFile(f, m).queue();
}
I tried to find a solution somewhere but i haven found any info that could help.

At JDA 4.2.0_168
the message on sendFile() is the name of the file that you are sending to the discord servers, so it needs an extension
example:
File f = new File("image.png");
TextChannel.sendFile(f, "image.png").queue();
if you want comments in the message
File f = new File("image.png");
//the name doesn't need to be the same, just the same extension
TextChannel.sendFile(f, "another_name.png").append("okay :)").queue();
Result of last code

Reading through the docs, you need to create a MessageEmbed and add it to the message using m.setEmbed(..)

UIMA Pipeline with Stanford NER

I have integrated Stanford NER in UIMA and developed a pipeline.
The pipeline contains a FileSystemCollectionReader,an NERAnnotator and a CasConsumer but the output so come isn't desired. In my input directory i have two files and after running the pipeline, i get two files as ouput but the second file is getting merged with the first file in second ouput. I don't know what's happening here.
The code for CasConsumer:
`
package org.gds.uima;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.UUID;
import org.apache.uima.UimaContext;
import org.apache.uima.analysis_component.AnalysisComponent_ImplBase;
import org.apache.uima.analysis_component.CasAnnotator_ImplBase;
import org.apache.uima.analysis_component.JCasAnnotator_ImplBase;
import org.apache.uima.analysis_engine.AnalysisEngineProcessException;
import org.apache.uima.cas.CAS;
import org.apache.uima.cas.CASException;
import org.apache.uima.cas.Type;
import org.apache.uima.cas.text.AnnotationFS;
import org.apache.uima.fit.component.CasConsumer_ImplBase;
import org.apache.uima.fit.component.JCasConsumer_ImplBase;
import org.apache.uima.fit.descriptor.ConfigurationParameter;
import org.apache.uima.fit.util.CasUtil;
import org.apache.uima.jcas.JCas;
import org.apache.uima.resource.ResourceInitializationException;
public class CasConsumer extends JCasConsumer_ImplBase
{
public final static String PARAM_OUTPUT="outputDir";
#ConfigurationParameter(name = PARAM_OUTPUT)
private String outputDirectory;
public final static String PARAM_ANNOTATION_TYPES = "annotationTypes";
enter code here
#ConfigurationParameter(name = PARAM_ANNOTATION_TYPES,defaultValue="String")
public List<String> annotationTypes;
public void initialize(final UimaContext context) throws ResourceInitializationException
{
super.initialize(context);
}
#Override
public void process(JCas jcas)
{
String original = jcas.getDocumentText();
try
{
String onlyText="";
JCas sofaText = jcas.getView(NERAnnotator.SOFA_NAME);
onlyText = sofaText.getDocumentText();
String name = UUID.randomUUID().toString().substring(20);
File outputDir = new File(this.outputDirectory+"/"+name);
System.out.print("Saving file to "+outputDir.getAbsolutePath());
FileOutputStream fos = new FileOutputStream(outputDir.getAbsoluteFile());
PrintWriter pw = new PrintWriter(fos);
pw.println(onlyText);
pw.close();
}
catch(CASException cae)
{
System.out.println(cae);
}
catch(FileNotFoundException fne)
{
System.out.print(fne);
}
}
}
`
}

Graph does not render as expected

This is the entire source code for the java file.
package gephifyer;
import java.awt.Color;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import org.gephi.data.attributes.api.AttributeColumn;
import org.gephi.data.attributes.api.AttributeController;
import org.gephi.data.attributes.api.AttributeModel;
import org.gephi.graph.api.DirectedGraph;
import org.gephi.graph.api.GraphController;
import org.gephi.graph.api.GraphModel;
import org.gephi.io.exporter.api.ExportController;
import org.gephi.io.importer.api.Container;
import org.gephi.io.importer.api.EdgeDefault;
import org.gephi.io.importer.api.ImportController;
import org.gephi.io.importer.spi.FileImporter;
import org.gephi.io.processor.plugin.DefaultProcessor;
import org.gephi.partition.api.Partition;
import org.gephi.partition.api.PartitionController;
import org.gephi.partition.plugin.NodeColorTransformer;
import org.gephi.preview.api.PreviewController;
import org.gephi.preview.api.PreviewModel;
import org.gephi.preview.api.PreviewProperty;
import org.gephi.preview.types.DependantOriginalColor;
import org.gephi.project.api.ProjectController;
import org.gephi.project.api.Workspace;
import org.gephi.ranking.api.Ranking;
import org.gephi.ranking.api.RankingController;
import org.gephi.ranking.plugin.transformer.AbstractSizeTransformer;
import org.gephi.statistics.plugin.Modularity;
import org.openide.util.Lookup;
import org.gephi.layout.plugin.force.StepDisplacement;
import org.gephi.layout.plugin.force.yifanHu.YifanHu;
import org.gephi.layout.plugin.force.yifanHu.YifanHuLayout;
import org.gephi.layout.plugin.openord.*;
public class Gephifyer {
public void doStuff(String[] args)
{
String filename = new String();
try{
filename = args[0];
} catch (ArrayIndexOutOfBoundsException ex) {
System.out.println("Supply the subreddit name as the argument.");
System.exit(0);
}
ProjectController pc = Lookup.getDefault().lookup(ProjectController.class);
pc.newProject();
Workspace workspace = pc.getCurrentWorkspace();
ImportController importController = Lookup.getDefault().lookup(ImportController.class);
Container container;
try{
File file = new File(filename + ".csv");
//File file = new File(getClass().getResource("askscience.csv").toURI());
container = importController.importFile(file);
container.getLoader().setEdgeDefault(EdgeDefault.DIRECTED);
container.setAllowAutoNode(false); // don't create missing nodes
} catch (Exception ex) {
ex.printStackTrace();
return;
}
// Append imported data to graph api
importController.process(container, new DefaultProcessor(), workspace);
GraphModel graphModel = Lookup.getDefault().lookup(GraphController.class).getModel();
DirectedGraph directedGraph = graphModel.getDirectedGraph();
// Now let's manipulate the graph api, which stores / serves graphs
System.out.println("Nodes: " + directedGraph.getNodeCount() + "\nEdges: " + directedGraph.getEdgeCount());
//Run OpenOrd.
//OpenOrdLayout layout = new OpenOrdLayout(null);
YifanHuLayout layout = new YifanHuLayout(null, new StepDisplacement(0.95f));
layout.setGraphModel(graphModel);
layout.resetPropertiesValues();
layout.initAlgo();
layout.goAlgo();
while (layout.canAlgo()) // This is only possible because OpenOrd has a finite number of iterations.
{
layout.goAlgo();
}
AttributeModel attributemodel = Lookup.getDefault().lookup(AttributeController.class).getModel();
// Get modularity for coloring
Modularity modularity = new Modularity();
modularity.setUseWeight(true);
modularity.setRandom(true);
modularity.setResolution(1.0);
modularity.execute(graphModel, attributemodel);
// Partition with modularity
AttributeColumn modcol = attributemodel.getNodeTable().getColumn(Modularity.MODULARITY_CLASS);
PartitionController partitionController = Lookup.getDefault().lookup(PartitionController.class);
Partition p = partitionController.buildPartition(modcol, directedGraph);
NodeColorTransformer nodeColorTransformer = new NodeColorTransformer();
nodeColorTransformer.randomizeColors(p);
partitionController.transform(p, nodeColorTransformer);
// Ranking
RankingController rankingController = Lookup.getDefault().lookup(RankingController.class);
Ranking degreeRanking = rankingController.getModel().getRanking(Ranking.NODE_ELEMENT, Ranking.INDEGREE_RANKING);
AbstractSizeTransformer sizeTransformer = (AbstractSizeTransformer) rankingController.getModel().getTransformer(Ranking.NODE_ELEMENT, org.gephi.ranking.api.Transformer.RENDERABLE_SIZE);
sizeTransformer.setMinSize(5.0f);
sizeTransformer.setMaxSize(40.0f);
rankingController.transform(degreeRanking,sizeTransformer);
// Finally, the preview model
PreviewController previewController = Lookup.getDefault().lookup(PreviewController.class);
PreviewModel previewModel = previewController.getModel();
previewModel.getProperties().putValue(PreviewProperty.SHOW_NODE_LABELS, Boolean.TRUE);
previewModel.getProperties().putValue(PreviewProperty.NODE_LABEL_COLOR, new DependantOriginalColor(Color.BLACK));
previewModel.getProperties().putValue(PreviewProperty.NODE_LABEL_FONT, previewModel.getProperties().getFontValue(PreviewProperty.NODE_LABEL_FONT).deriveFont(8));
previewModel.getProperties().putValue(PreviewProperty.EDGE_CURVED, Boolean.FALSE);
previewModel.getProperties().putValue(PreviewProperty.EDGE_OPACITY, 50);
previewModel.getProperties().putValue(PreviewProperty.EDGE_RADIUS, 10f);
previewModel.getProperties().putValue(PreviewProperty.BACKGROUND_COLOR, Color.TRANSLUCENT);
previewController.refreshPreview();
System.out.println("starting export");
ExportController ec = Lookup.getDefault().lookup(ExportController.class);
try{
ec.exportFile(new File(filename + ".svg"));
}
catch (IOException ex){
ex.printStackTrace();
return;
}
System.out.println("Done.");
}
public static void main(String[] args)
{
Gephifyer g = new Gephifyer();
g.doStuff(args);
}
}
At its heart, it's the various demos' code cobbled together to do what I want it to do.
I expect a graph that looks like this svg file, but the result is this svg file. That is, the problem is that the above code yields a graph where the arrows aren't fully connected to the nodes, making it look a bit messy. I can't for my life tell where in the code that is happening, though I guess it would be in the preview model part.

previewModel.getProperties().putValue(PreviewProperty.EDGE_RADIUS, 10f); sets the distance of the arrows from the node.

Fetch ajax/javascript content using HTMLunit

I have written a code which will fetch me a html contents of the page as response , I am using HTML Unit to do so . But I am getting error's for some specific urls like
[https://communities.netapp.com/welcome][1]
For first page i am able to retrieve the contents . But when i dont the content which we get using load more button .
Here's my code:
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Writer;
import java.net.MalformedURLException;
import com.gargoylesoftware.htmlunit.BrowserVersion;
import com.gargoylesoftware.htmlunit.FailingHttpStatusCodeException;
import com.gargoylesoftware.htmlunit.NicelyResynchronizingAjaxController;
import com.gargoylesoftware.htmlunit.WebClient;
import com.gargoylesoftware.htmlunit.html.HtmlPage;
public class Sample {
public static void main(String[] args) throws FailingHttpStatusCodeException, MalformedURLException, IOException, InterruptedException {
String url = "https://communities.netapp.com/welcome";
WebClient client = new WebClient(BrowserVersion.INTERNET_EXPLORER_9);
client.getOptions().setJavaScriptEnabled(true);
client.getOptions().setRedirectEnabled(true);
client.getOptions().setThrowExceptionOnScriptError(true);
client.getOptions().setCssEnabled(true);
client.getOptions().setUseInsecureSSL(true);
client.getOptions().setThrowExceptionOnFailingStatusCode(false);
client.setAjaxController(new NicelyResynchronizingAjaxController());
HtmlPage page = client.getPage(url);
Writer output = null;
String text = page.asText();
File file = new File("D://write6.txt");
output = new BufferedWriter(new FileWriter(file));
output.write(text);
output.close();
System.out.println("Your file has been written");
// System.out.println("as Text ==" +page.asText());
// System.out.println("asXML == " +page.asXml());
// System.out.println("text content ==" +page.getTextContent());
// System.out.println(page.getWebResponse().getContentAsString());
}
}
Any suggestion ?

As i understand from your question you have a button on which you have to press.
Please look at: http://htmlunit.sourceforge.net/gettingStarted.html
You have there an example of submitting a form.
This should be very similar here