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Google Speech API returns NULL

Trying to develop a speech to text application using Google's API with below code
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import org.testng.annotations.Test;
public class Speech2Text_Test {
#Test
public void f() {
try{
Path path = Paths.get("out.flac");
byte[] data = Files.readAllBytes(path);
String request = "https://www.google.com/"+
"speech-api/v2/recognize?"+
"xjerr=1&client=speech2text&lang=en-US&maxresults=10"+
"output=json&key=<My Key>";
URL url = new URL(request);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoOutput(true);
connection.setDoInput(true);
connection.setInstanceFollowRedirects(false);
connection.setRequestMethod("POST");
connection.setRequestProperty("Content-Type", "audio/x-flac; rate=16000");
connection.setRequestProperty("User-Agent", "speech2text");
connection.setConnectTimeout(60000);
connection.setUseCaches (false);
DataOutputStream wr = new DataOutputStream(connection.getOutputStream ());
wr.write(data);
wr.flush();
wr.close();
connection.disconnect();
System.out.println("Done");
BufferedReader in = new BufferedReader(
new InputStreamReader(
connection.getInputStream()));
String decodedString;
while ((decodedString = in.readLine()) != null) {
System.out.println(decodedString);
}
}
catch(Exception e){
e.printStackTrace();
}
}
}
however after running the class (which sends .flac file to Google api) am getting as "{"result":[]}" Instead of the utterances of the audio file converted to text, what could be the cases Google returns the result as "{"result":[]}"?

Ran into the same issue my self. I found that is was the format of the flac file. It needs to be 16-bit PCM and mono otherwise you get the null result back. I use http://www.audacityteam.org/ to check/convert my files.

Get some, not all, content of HTML in Java

In the following code, the content of HTML is displayed in the console. What I want to do is how can I just show the content of some part of the HTML, for example the HTML content of stock prices?
import java.io.InputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.Scanner;
public class ShowStock {
public static void main(String[] args) throws IOException {
String urlString;
if(args.length == 1)
urlString = args[0];
else
{
urlString = "https://www.google.com/finance/historical?cid=22144&startdate=Jan+1%2C+2014&enddate=Dec+31%2C+2015&num=30&ei=m-JzVqm2L9fJUaOphsAF";
System.out.println("Reading data from " + urlString );
}
// Open connection
URL u = new URL(urlString);
URLConnection connection = u.openConnection();
// check to make sure the page exists
HttpURLConnection httpConnection = (HttpURLConnection) connection;
int code = httpConnection.getResponseCode();
String message = httpConnection.getResponseMessage();
System.out.println(code + " " + message);
if (code != HttpURLConnection.HTTP_OK)
return;
// Read server response
InputStream instream = connection.getInputStream();
Scanner in = new Scanner(instream);
// display server response to console
while (in.hasNextLine())
{
String input = in.nextLine();
System.out.println(input);
}
}
}

If it is XHTML (html like xml), you can use many xml libraries
If not, use an html parser jsoup, htmlcleaner, ...
see this:
Which HTML Parser is the best?

Java: ConnectException/Cannot find or load Main-Class

So in a nutshell, I'm just trying to get a small working skeleton program that I can use to sort of learn about Http communication and "feel" my way around to figure out what I will eventually need for a bigger program I am working on. This particular code here is actually just a chopped up version of an example from the Apache libraries. I could compile the examples listed on the Apache website, but they didn't run properly, giving a "java.net.ConnectException". I figured it had to do with Windows c-blocking a program like this from making a connection, and that I would need to run it as an administrator. I then tried taking the code and throwing it into an executable jar file, but I get a Cannot-find-or-load-main-class error. Am I an idiot or is the Apache library a little outdated/not fit for Win 8/something else?
Code below:
package NewProject;
import java.net.Socket;
import org.apache.http.ConnectionReuseStrategy;
import org.apache.http.HttpHost;
import org.apache.http.HttpResponse;
import org.apache.http.impl.DefaultBHttpClientConnection;
import org.apache.http.impl.DefaultConnectionReuseStrategy;
import org.apache.http.message.BasicHttpRequest;
import org.apache.http.protocol.HttpCoreContext;
import org.apache.http.protocol.HttpProcessor;
import org.apache.http.protocol.HttpProcessorBuilder;
import org.apache.http.protocol.HttpRequestExecutor;
import org.apache.http.protocol.RequestConnControl;
import org.apache.http.protocol.RequestContent;
import org.apache.http.protocol.RequestExpectContinue;
import org.apache.http.protocol.RequestTargetHost;
import org.apache.http.protocol.RequestUserAgent;
import org.apache.http.util.EntityUtils;
class NewProject
{
public static void main(String[] args) throws Exception
{
HttpProcessor httpproc = HttpProcessorBuilder.create()
.add(new RequestContent())
.add(new RequestTargetHost())
.add(new RequestConnControl())
.add(new RequestUserAgent("Test/1.1"))
.add(new RequestExpectContinue(true)).build();
HttpRequestExecutor httpexecutor = new HttpRequestExecutor();
HttpCoreContext coreContext = HttpCoreContext.create();
HttpHost host = new HttpHost("localhost", 8080);
coreContext.setTargetHost(host);
Out os = new Out("TestOut.txt");
DefaultBHttpClientConnection conn = new DefaultBHttpClientConnection(8 * 1024);
ConnectionReuseStrategy connStrategy = DefaultConnectionReuseStrategy.INSTANCE;
try
{
String[] targets =
{
"http://www.google.com/"
};
for (int i = 0; i < targets.length; i++)
{
if (!conn.isOpen())
{
Socket socket = new Socket(host.getHostName(), host.getPort());
conn.bind(socket);
}
BasicHttpRequest request = new BasicHttpRequest("GET", targets[i]);
os.println(">> Request URI: " + request.getRequestLine().getUri());
httpexecutor.preProcess(request, httpproc, coreContext);
HttpResponse response = httpexecutor.execute(request, conn, coreContext);
httpexecutor.postProcess(response, httpproc, coreContext);
os.println("<< Response: " + response.getStatusLine());
os.println(EntityUtils.toString(response.getEntity()));
os.println("==============");
if (!connStrategy.keepAlive(response, coreContext))
{
conn.close();
}
else
{
os.println("Connection kept alive...");
}
}
}
catch (IndexOutOfBoundsException iob)
{
os.println("What happened here?");
}
finally
{
conn.close();
}
return;
}
}

... they didn't run properly, giving a "java.net.ConnectException"
That could be caused by lots of things. There are clues in the exception message ... which you chose not to share with us.
... "Cannot find or load Main-Class"
Again multiple possible causes, and there are clues in the exception message ... which you chose not to share with us.
But the fact that you have created a JAR file plus the "Main-Class" hint in the error message fragment you provided suggest that you made a mistake in the creation of the JAR file; i.e. you used the wrong name for the "Main-Class" attribute.
Given that source code, the "Main-Class" attribute should be "NewProject.NewProject". I suspect you set it to something else.
A second possibility is that you haven't handled the dependency on the Apache library correctly. The Apache classes need to be on the classpath specified by the JAR file. (You can't use a -cp argument or $CLASSPATH when you launch with java -jar.)
Am I an idiot or is the Apache library a little outdated/not fit for Win 8/something else?
There is nothing wrong with the Apache library.

The code you posted seems a little low level (e.g. interacting directly with Socket connections). The code posted below should give you what it sounds like you are looking for. The classes used also give you a lot of inroads into setting and getting http parameters (e.g. headers, time-outs, etc).
package org.yaorma.example.http.client;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.URL;
public class HttpClientExample {
public static void main(String[] args) throws Exception {
String response;
response = get("http://www.google.com");
System.out.println("RESPONSE FROM GET -----------------------------------------");
System.out.println(response);
response = post("http://httpbin.org/post", "This is the message I posted to httpbin.org/post");
System.out.println("RESPONSE FROM POST -----------------------------------------");
System.out.println(response);
}
/**
* Method to post a request to a given URL.
*/
public static String post(String urlString, String message) {
try {
// get a connection
URL url = new URL(urlString);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
// set the parameters
conn.setRequestMethod("POST");
conn.setDoOutput(true);
// send the message
OutputStream os = conn.getOutputStream();
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(os, "UTF-8"));
writer.write(message);
writer.flush();
writer.close();
os.close();
// get the response
conn.connect();
InputStream content = (InputStream) conn.getInputStream();
// read the response
BufferedReader in = new BufferedReader(new InputStreamReader(content));
String rtn = "";
String line;
while ((line = in.readLine()) != null) {
rtn += line + "\n";
}
return rtn;
} catch (Exception exp) {
throw new RuntimeException(exp);
}
}
/**
* Method to do a get from a given URL.
*/
public static String get(String urlString) {
try {
// get a connection
URL url = new URL(urlString);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
// set the parameters
conn.setRequestMethod("GET");
conn.setDoOutput(true);
// get the response
conn.connect();
InputStream content = (InputStream) conn.getInputStream();
// read the response
BufferedReader in = new BufferedReader(new InputStreamReader(content));
String rtn = "";
String line;
while ((line = in.readLine()) != null) {
rtn += line + "\n";
}
return rtn;
} catch (Exception exp) {
throw new RuntimeException(exp);
}
}
}

java.lang.reflect.InvocationTargetException while using jsoup

I'm trying to parse an html document in a webservice. According to google, jsoup seem to be the faster and easier html parser, so I included in my project but I get the exception "Exception: java.lang.reflect.InvocationTargetException Message: java.lang.reflect.InvocationTargetException" I have tried everything, but nothings give results. Please help
I add jsoup.jar in my project's libray classpath.
I am using Eclipse Luna on Windows XP
Java 1.7 apache tomcat 7.0
this is my code:
try {
url = new URL("http://consulta.muniguate.com/emetra/despliega.php?tplaca="+tplaca+"&nplaca="+nplaca);
conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("GET");
rd = new BufferedReader(new InputStreamReader(conn.getInputStream()));
while ((line = rd.readLine()) != null) {
result += line;
}
Document doc = Jsoup.connect(result).get();
String title= doc.title();
System.out.println(title);
rd.close();
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
This is the full code:
package clases;
import java.io.BufferedReader;
import javax.jws.WebService;
import javax.jws.WebMethod;
import javax.jws.WebParam;
import java.io.IOException;
import java.io.InputStreamReader;
import java.lang.reflect.InvocationTargetException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URL;
import org.jsoup.Connection.Method;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
#WebService(serviceName = "Transito")
public class Transito {
#WebMethod(operationName = "consultar_saldo")
public String consultar_saldo(String tplaca, int nplaca) throws InvocationTargetException {
String result = "";
try {
Document doc= Jsoup.connect("http://www.muniguate.com/utilities/remisiones.htm?tplaca="+tplaca+"&nplaca="+nplaca).userAgent("Mozilla").get();
String result = doc.title();
System.out.println(result);
} catch (Exception e){
e.getCause();
}
return result;
}
}

Jsoup.connect() accepts a url string, not response content

"I have tried everything, but nothings give results."
In that case you are doomed since there is nothing left for us to try.
But lets assume that you didn't try everything. Lets assume that documentation of Jsoup.connect() is actually telling the true, and this method is used only to create Connection to resource which should be parsed, not to parse it. Its get() method job to connect to resource from created Connection, parse it and return it as Document.
So this method instead of HTML text of resource, will need information required for connection like URL.
So instead of manually creating HttpURLConnection and reading its HTML code, pass string representing URL to Jsoup.connect() and then using get() connect and parse to this resource.
So instead of
URL url = new URL("http://consulta.muniguate.com/emetra/despliega.php?tplaca="+tplaca+"&nplaca="+nplaca);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("GET");
BufferedReader rd = new BufferedReader(new InputStreamReader(
conn.getInputStream()));
String line = null;
String result = "";
while ((line = rd.readLine()) != null) {
result += line;
}
Simply use
Document doc = Jsoup.connect("http://consulta.muniguate.com/emetra/despliega.php?tplaca="+tplaca+"&nplaca="+nplaca).get();
Now you should be able to use
String title = doc.title();
System.out.println(title);

Error in mapper.writeValue() method

I am developing a Java application to be the server in a Google Cloud Messaging Android app.
I have been following a tutorial and I managed to do rest of the tutorial with out a trouble.
My Java application has three classes which are Content.java, POST2GCM.java, App.java. These classes do what the name describes.
Content.java class is below.
package com.hmkcode.vo;
import java.io.Serializable;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
public class Content implements Serializable {
private List<String> registration_ids;
private Map<String,String> data;
public void addRegId(String regId){
if(registration_ids == null)
registration_ids = new LinkedList<String>();
registration_ids.add(regId);
}
public void createData(String title, String message){
if(data == null)
data = new HashMap<String,String>();
data.put("title", title);
data.put("message", message);
}
}
App.java class is below
package com.hmkcode.vo;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.hmkcode.vo.Content;
public class App
{
public static void main( String[] args )
{
System.out.println( "Sending POST to GCM" );
String apiKey = "AIzaSyB8azikXJKi_NjpWcVNJVO0d........";
Content content = createContent();
POST2GCM.post(apiKey, content);
}
public static Content createContent(){
Content c = new Content();
c.addRegId("APA91bFqnQzp0z5IpXWdth1lagGQZw1PTbdBAD13c-UQ0T76BBYVsFrY96MA4SFduBW9RzDguLaad-7l4QWluQcP6zSoX1HSUaAzQYSmI93....");
c.createData("Test Title", "Test Message");
return c;
}
}
POST2GCM.java class is below
package com.hmkcode.vo;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import com.fasterxml.jackson.databind.*;
public class POST2GCM {
public static void post(String apiKey, Content content){
try{
// 1. URL
URL url = new URL("https://android.googleapis.com/gcm/send");
// 2. Open connection
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
// 3. Specify POST method
conn.setRequestMethod("POST");
// 4. Set the headers
conn.setRequestProperty("Content-Type", "application/json");
conn.setRequestProperty("Authorization", "key="+apiKey);
conn.setDoOutput(true);
// 5. Add JSON data into POST request body
//`5.1 Use Jackson object mapper to convert Content object into JSON
ObjectMapper mapper = new ObjectMapper();
// 5.2 Get connection output stream
DataOutputStream wr = new DataOutputStream(conn.getOutputStream());
// 5.3 Copy Content "JSON" into
mapper.writeValue(wr,content);
// 5.4 Send the request
wr.flush();
// 5.5 close
wr.close();
// 6. Get the response
int responseCode = conn.getResponseCode();
System.out.println("\nSending 'POST' request to URL : " + url);
System.out.println("Response Code : " + responseCode);
BufferedReader in = new BufferedReader(
new InputStreamReader(conn.getInputStream()));
String inputLine;
StringBuffer response = new StringBuffer();
while ((inputLine = in.readLine()) != null) {
response.append(inputLine);
}
in.close();
// 7. Print result
System.out.println(response.toString());
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
The problem arises in the POST2GCM.java class, in the line
mapper.writeValue(wr,content);
Where the suggestions are to add try catch block,Add exception to method signature, Add catch clauses(s).
I did all the suggestions which did not solve the problem.
What would be the problem here?

You need to add the jackson-core-2.4.3.jar library file to your project.
Add it to your java build path too.
Of course ... 2.4.3 is the version I used, but it should work with previous versions.