Develop Reference

java.io.IOException: Stream closed when unmarshaling with JAXBContext

I wrote an unmarshal method which is accessed by a bunch of tests running in parallel to read data from XML files.
This method sits in a maven commons dependency module added to my main module.
I am facing java.io.IOException: Stream closed exception in a very inconsistent fashion and cannot reproduce it locally. It only happens when my tests run in CI in Jenkins and that too not very often. Code is below.
public <T> Object internalUnmarshal(String url, Class<T> clazz)
throws JAXBException,DataException, ClassNotFoundException,IOException
{
InputStream is = getClass().getResourceAsStream(url);
try {
if (is == null) {
throw new DataException("''{0}'' not found.", url);
}
JAXBContext jaxbContext = JAXBContext
.newInstance(Class.forName(clazz.getCanonicalName());
Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
return unmarshaller.unmarshal(is);
} catch (JAXBException e) {
throw new JAXBException(e);
} finally {
is.close();
}
}
I even added a synchronized block as below but same issue was reproduced in jenkins server run.
synchronized(this){
return unmarshaller.unmarshal(is);
}
Stack trace below :-
[javax.xml.bind.UnmarshalException
- with linked exception:
[java.io.IOException: Stream closed]]
at com.paydiant.commons.data.unmarshalers.XMLUnmarshaler.internalUnmarshal(XMLUnmarshaler.java:116)
at com.paydiant.commons.data.unmarshalers.XMLUnmarshaler.resloveToUnmarshaledObjectList(XMLUnmarshaler.java:76)
at com.paydiant.commons.data.unmarshalers.XMLUnmarshaler.doUnmarshalObjects(XMLUnmarshaler.java:36)
... 67 more
Caused by: javax.xml.bind.UnmarshalException
- with linked exception:
[java.io.IOException: Stream closed]
at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:261)
at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:229)
at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerImpl.java:157)
at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerImpl.java:204)
at com.paydiant.commons.data.unmarshalers.XMLUnmarshaler.internalUnmarshal(XMLUnmarshaler.java:112)
... 69 more
Caused by: java.io.IOException: Stream closed
at java.util.zip.InflaterInputStream.ensureOpen(InflaterInputStream.java:67)
at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:121)
at java.io.FilterInputStream.read(FilterInputStream.java:83)
at java.io.FilterInputStream.read(FilterInputStream.java:83)
at org.apache.xerces.impl.XMLEntityManager$RewindableInputStream.read(Unknown Source)
at org.apache.xerces.impl.XMLEntityManager.setupCurrentEntity(Unknown Source)
at org.apache.xerces.impl.XMLVersionDetector.determineDocVersion(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:258)
... 73 more
Any ideas what might be causing this ?

in java catch can't catch exception with jsoup

I want to parse a website with jsoup, and it succeeded to get the detail what I want, but I still get many many exceptions and not in catch
public static void main(String[] argv)
{
getGoogle();
}
private static void getGoogle() {
String url = "http://google.com";
Document doc = null;
try {
doc = Jsoup.connect(url).get();
Element body = doc.body();
}catch (Exception e) {
System.out.println("------------google------------");
System.out.println("getGoogle:" + e.getMessage());
}
}
when I use debug mode found it was because doc = Jsoup.connect(url).get(); this line, but it looks ok after I search much info, below is exceptions I got
Could not instrument class com/sun/deploy/security/MozillaJSSProvider: java.lang.IllegalArgumentException
at org.eclipse.jdt.launching.internal.org.objectweb.asm.ClassReader.<init>(Unknown Source)
at org.eclipse.jdt.launching.internal.weaving.ClassfileTransformer.transform(ClassfileTransformer.java:25)
at org.eclipse.jdt.launching.internal.javaagent.Premain$1.transform(Premain.java:51)
at java.instrument/java.lang.instrument.ClassFileTransformer.transform(ClassFileTransformer.java:246)
at java.instrument/sun.instrument.TransformerManager.transform(TransformerManager.java:188)
at java.instrument/sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:550)
at java.base/java.lang.ClassLoader.defineClass2(Native Method)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1099)
at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:206)
at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:760)
at java.base/jdk.internal.loader.BuiltinClassLoader.findClassInModuleOrNull(BuiltinClassLoader.java:681)
at java.base/jdk.internal.loader.BuiltinClassLoader.findClass(BuiltinClassLoader.java:562)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:608)
at java.base/java.lang.Class.forName(Class.java:448)
at java.base/java.util.ServiceLoader.loadProvider(ServiceLoader.java:847)
at java.base/java.util.ServiceLoader.access$600(ServiceLoader.java:390)
at java.base/java.util.ServiceLoader$ModuleServicesLookupIterator.hasNext(ServiceLoader.java:1071)
at java.base/java.util.ServiceLoader$2.hasNext(ServiceLoader.java:1294)
at java.base/java.util.ServiceLoader$3.hasNext(ServiceLoader.java:1379)
at java.base/sun.security.jca.ProviderConfig$ProviderLoader.load(ProviderConfig.java:334)
at java.base/sun.security.jca.ProviderConfig$3.run(ProviderConfig.java:244)
at java.base/sun.security.jca.ProviderConfig$3.run(ProviderConfig.java:238)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.base/sun.security.jca.ProviderConfig.doLoadProvider(ProviderConfig.java:238)
at java.base/sun.security.jca.ProviderConfig.getProvider(ProviderConfig.java:218)
at java.base/sun.security.jca.ProviderList.getProvider(ProviderList.java:266)
at java.base/sun.security.jca.ProviderList.getIndex(ProviderList.java:296)
at java.base/sun.security.jca.ProviderList.getProviderConfig(ProviderList.java:280)
at java.base/sun.security.jca.ProviderList.getProvider(ProviderList.java:286)
at java.base/java.security.Security.getProvider(Security.java:470)
at java.base/sun.security.ssl.SignatureAndHashAlgorithm.<clinit>(SignatureAndHashAlgorithm.java:415)
at java.base/sun.security.ssl.SSLSessionImpl.<init>(SSLSessionImpl.java:182)
at java.base/sun.security.ssl.SSLSessionImpl.<init>(SSLSessionImpl.java:150)
at java.base/sun.security.ssl.SSLSessionImpl.<clinit>(SSLSessionImpl.java:79)
at java.base/sun.security.ssl.SSLSocketImpl.init(SSLSocketImpl.java:596)
at java.base/sun.security.ssl.SSLSocketImpl.<init>(SSLSocketImpl.java:534)
at java.base/sun.security.ssl.SSLSocketFactoryImpl.createSocket(SSLSocketFactoryImpl.java:72)
at java.base/sun.net.www.protocol.https.HttpsClient.createSocket(HttpsClient.java:413)
at java.base/sun.net.NetworkClient.doConnect(NetworkClient.java:162)
at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:474)
at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:569)
at java.base/sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:265)
at java.base/sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:372)
at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:191)
at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1181)
at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1075)
at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:177)
at java.base/sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:163)
at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:651)
at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:676)
at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:676)
at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:628)
at org.jsoup.helper.HttpConnection.execute(HttpConnection.java:260)
at org.jsoup.helper.HttpConnection.get(HttpConnection.java:249)
at test3.test3.getGoogle(test3.java:23)
at test3.test3.main(test3.java:12)
Could not instrument class com/sun/deploy/security/MozillaJSSProvider$ProviderService: java.lang.IllegalArgumentException
at org.eclipse.jdt.launching.internal.org.objectweb.asm.ClassReader.<init>(Unknown Source)
at org.eclipse.jdt.launching.internal.weaving.ClassfileTransformer.transform(ClassfileTransformer.java:25)
Could not instrument class com/sun/deploy/security/MozillaJSSProvider$ProviderService: java.lang.IllegalArgumentException
at org.eclipse.jdt.launching.internal.org.objectweb.asm.ClassReader.<init>(Unknown Source)
at org.eclipse.jdt.launching.internal.weaving.ClassfileTransformer.transform(ClassfileTransformer.java:25)
Could not instrument class sun/security/pkcs11/SunPKCS11: java.lang.IllegalArgumentException
at org.eclipse.jdt.launching.internal.org.objectweb.asm.ClassReader.<init>(Unknown Source)
at org.eclipse.jdt.launching.internal.weaving.ClassfileTransformer.transform(ClassfileTransformer.java:25)
Could not instrument class sun/security/pkcs11/wrapper/PKCS11Exception: java.lang.IllegalArgumentException
at org.eclipse.jdt.launching.internal.org.objectweb.asm.ClassReader.<init>(Unknown Source)
at org.eclipse.jdt.launching.internal.weaving.ClassfileTransformer.transform(ClassfileTransformer.java:25)
Could not instrument class sun/security/pkcs11/SunPKCS11$Descriptor: java.lang.IllegalArgumentException
at org.eclipse.jdt.launching.internal.org.objectweb.asm.ClassReader.<init>(Unknown Source)
at org.eclipse.jdt.launching.internal.weaving.ClassfileTransformer.transform(ClassfileTransformer.java:25)
Could not instrument class com/sun/security/sasl/gsskerb/JdkSASL: java.lang.IllegalArgumentException
at org.eclipse.jdt.launching.internal.org.objectweb.asm.ClassReader.<init>(Unknown Source)
at org.eclipse.jdt.launching.internal.weaving.ClassfileTransformer.transform(ClassfileTransformer.java:25)
at org.eclipse.jdt.launching.internal.javaagent.Premain$1.transform(Premain.java:51)
Could not instrument class com/sun/security/sasl/gsskerb/JdkSASL$1: java.lang.IllegalArgumentException
at org.eclipse.jdt.launching.internal.org.objectweb.asm.ClassReader.<init>(Unknown Source)
at org.eclipse.jdt.launching.internal.weaving.ClassfileTransformer.transform(ClassfileTransformer.java:25)
at org.eclipse.jdt.launching.internal.javaagent.Premain$1.transform(Premain.java:51)
and more more exceptions.....and all not catch by try...catch

It is an eclipse bug, you can find the discussion here
Also, this has been raised in SO as well, this (https://stackoverflow.com/a/47109099/6039974) answer might help you.

Exception java.lang.NoClassDefFoundError android/app/Activity

In an android app, having:
public class Pars extends Activity{
public Document docout(){
InputStream is = getResources().openRawResource(R.raw.talechap01);
Document docout = null;
DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = null;
try {
builder = domFactory.newDocumentBuilder();
docout = builder.parse(is);
} catch (ParserConfigurationException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (SAXException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return docout;
}
and
public class Manager {
public static String getStory(String spage, Document docs) {
XPathExpression expr;
XPath xpath = XPathFactory.newInstance().newXPath();
Object result = null;
String num = spage;
String par = null;
try {
expr = xpath.compile("//decision"+num+"/p//text()");
result = expr.evaluate(docs, XPathConstants.NODESET);
}
catch (XPathExpressionException e) {
e.printStackTrace();
}
NodeList nodes = (NodeList) result;
for (int i = 0; i < nodes.getLength(); i++) {
par = nodes.item(i).getNodeValue();
System.out.println(par);
}
return par;
}
}
Now I want to test the code.
public class Test {
public static void main(String[] args) {
try {Pars p = new Pars();
Document doc = p.docout();
System.out.println(Manager.getStory("000", doc));
}catch (Exception e){
e.printStackTrace();
}
}
}
I run "Test" as a java application and I get:
Exception in thread "main" java.lang.NoClassDefFoundError:
android/app/Activity at java.lang.ClassLoader.defineClass1(Native
Method) at java.lang.ClassLoader.defineClass(Unknown Source) at
java.security.SecureClassLoader.defineClass(Unknown Source) at
java.net.URLClassLoader.defineClass(Unknown Source) at
java.net.URLClassLoader.access$100(Unknown Source) at
java.net.URLClassLoader$1.run(Unknown Source) at
java.net.URLClassLoader$1.run(Unknown Source) at
java.security.AccessController.doPrivileged(Native Method) at
java.net.URLClassLoader.findClass(Unknown Source) at
java.lang.ClassLoader.loadClass(Unknown Source) at
sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at
java.lang.ClassLoader.loadClass(Unknown Source) at
com.stack.over.Test.main(Test.java:11) Caused by:
java.lang.ClassNotFoundException: android.app.Activity at
java.net.URLClassLoader$1.run(Unknown Source) at
java.net.URLClassLoader$1.run(Unknown Source) at
java.security.AccessController.doPrivileged(Native Method) at
java.net.URLClassLoader.findClass(Unknown Source) at
java.lang.ClassLoader.loadClass(Unknown Source) at
sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at
java.lang.ClassLoader.loadClass(Unknown Source) ... 13 more
I tried to find how to fix it but cannot achieve it.
I have this answer from another question but I'm kind of noob yet and can't figure it out how to fix it.
You have defined your Pars class as extending the class Activity. The
error you are seeing is telling you that the class
android.app.Activity is not available on the classpath. Maybe you need
to check which libraries you import. – adamretter Mar 5 at 10:01
Thanks all.

The error is that you're trying to run a program that references Android classes (android.app.Activity) as a regular Java program that doesn't have Android runtime libraries in its classpath.
You should run Android apps as Android apps (on an emulator or a device) and regular Java programs as regular Java programs and not mix the two. Activity is Android; main() method is regular Java.
To learn Android app development, you can start with the developer.android.com getting started documentation.

The error message says it all. You are writing Android now. Trying to write a main method doesn't make any more sense in Android than it would if you were writing a webapp that runs in Tomcat. You are going to need to step back and read up on how Android works.

java http connection debug

I am trying to read text contents of a webpage ( based on source ), but seem to be unable to make the connection. What could be the issue?
EDIT: updated stack trace
I ran this is debug mode and see the following:
JP_FetchWebPageHeader(Object).<init>()
Source not found
I was able to single setp in spite of the above error. is this a error message an issue?
I'm using eclipse on 64 bit windows and Java 1.7
The code is :
// **** Fetch web page or header
import java.io.*;
import java.net.*;
import java.util.Scanner;
public final class JP_FetchWebPageHeader {
/**
* #param aArgs
* <ul>
* <li> aArgs[0] : an HTTP URL
* <li> aArgs[1] : (header | content)
* </ul>
*/
public static void main(String...aArgs) throws MalformedURLException {
String url = aArgs[0];
String option = aArgs[1];
JP_FetchWebPageHeader fetcher = new JP_FetchWebPageHeader(url);
if (HEADER.equalsIgnoreCase(option)) {
log(fetcher.getPageHeader());
}else if (CONTENT.equalsIgnoreCase(option)) {
log(fetcher.getPageContent());
}else {
log("Unknown option.");
}
}
public JP_FetchWebPageHeader(URL aURL) {
if( ! HTTP.equals(aURL.getProtocol())) {
throw new IllegalArgumentException("URL isnt for HTTP protocol: " + aURL);
}
fURL = aURL;
}
public JP_FetchWebPageHeader(String aUrlName ) throws MalformedURLException {
this(new URL(aUrlName));
}
// Fetch the HTML content of the web page as simple text
public String getPageContent() {
String result = null;
URLConnection connection = null;
try {
connection = fURL.openConnection();
Scanner scanner = new Scanner(connection.getInputStream());
scanner.useDelimiter(END_OF_INPUT);
result = scanner.next();
} catch (IOException ex ) {
log("Cannot open connection to " + fURL.toString());
}
return result;
}
//Fetch HTML headers as simple text
public String getPageHeader() {
return null;
}
//PRIVATE
private URL fURL;
private static final String HTTP = "http";
private static final String HEADER = "header";
private static final String CONTENT = "content";
private static final String END_OF_INPUT = "\\Z";
private static final String NEWLINE = System.getProperty("line.separator");
private static void log(Object aObject){
System.out.println(aObject);
}
}
Arguments: http://www.google.com content
Result :
Cannot open connection to http://www.google.com
java.net.ConnectException: Connection timed out: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at sun.net.NetworkClient.doConnect(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.<init>(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
null
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
at JP_FetchWebPageHeader.getPageContent(JP_FetchWebPageHeader.java:54)
at JP_FetchWebPageHeader.main(JP_FetchWebPageHeader.java:30)

unknown host exception

try {
{
long startTime = System.currentTimeMillis();
String source="s";
String source1="s";
URL google = new URL("http://google.com/");
HttpURLConnection yc =(HttpURLConnection)google.openConnection();
BufferedReader in = new BufferedReader(new InputStreamReader(yc.getInputStream()));
String inputLine;
while ((inputLine = in.readLine()) != null) {
source=source.concat(inputLine);
}
in.close();
yc.disconnect();
}
long endTime1 = System.currentTimeMillis();
System.out.println("Total elapsed time in execution of method callMethod() is :"+ (endTime1-startTime));
}
}
when i tried the above through command prompt
i got
java.net.UnknownHostException: google.com
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at sun.net.NetworkClient.doConnect(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.<init>(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
at ScagntJavaHttp.httpMakeRequest(ScagntJavaHttp.java:185)
at test.main(test.java:23)
Can any help me in resolving this one?

I believe it's a proxy problem.
Try to see if you have a proxy definition in your browser and then set it:
ProxySelector.setDefault(new ProxySelector() {
#Override
public void connectFailed(URI uri, SocketAddress sa, IOException ioe) {
throw new RuntimeException("Proxy connect failed", ioe);
}
#Override
public List select(URI uri) {
return Arrays
.asList(new Proxy(Proxy.Type.HTTP,
new InetSocketAddress(proxyHost,
proxyPort)));
}
});
To see if you have proxy definition in IE, go to Tools - Internet Options -- Connections -- Lan Settings

Try removing http:// from your host url when you get java.net.UnknownHostException and check your internet connection and the host exists (probably safe with google . . .)