Develop Reference

Importing a new cassandra related POM dependency in project resulting in run time errors

I'm getting the following errors :
Caused by: javax.persistence.PersistenceException: Failed to load provider from META-INF/services
at javax.persistence.spi.PersistenceProviderResolverHolder$DefaultPersistenceProviderResolver.getPersistenceProviders(PersistenceProviderResolverHolder.java:115)
at javax.persistence.Persistence$PersistenceUtilImpl.isLoaded(Persistence.java:278)
at org.hibernate.validator.engine.resolver.JPATraversableResolver.isReachable(JPATraversableResolver.java:62)
at org.hibernate.validator.engine.resolver.DefaultTraversableResolver.isReachable(DefaultTraversableResolver.java:94)
at org.hibernate.validator.engine.resolver.SingleThreadCachedTraversableResolver.isReachable(SingleThreadCachedTraversableResolver.java:47)
at org.hibernate.validator.engine.ValidatorImpl.isValidationRequired(ValidatorImpl.java:757)
... 96 more
Caused by: java.lang.ClassNotFoundException: me.prettyprint.hom.CassandraPersistenceProvider
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1858)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1709)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:274)
at org.apache.geronimo.osgi.locator.ProviderLocator.loadClass(ProviderLocator.java:195)
at org.apache.geronimo.osgi.locator.ProviderLocator.locateServiceClasses(ProviderLocator.java:524)
at org.apache.geronimo.osgi.locator.ProviderLocator.getServices(ProviderLocator.java:315)
at javax.persistence.spi.PersistenceProviderResolverHolder$DefaultPersistenceProviderResolver.getPersistenceProviders(PersistenceProviderResolverHolder.java:108)
... 101 more
I have imported a pom dependeny in my project, the new pom dependeny inturn has some cassandra related dependeny shown below :
<dependency>
<groupId>com.datastax.cassandra</groupId>
<artifactId>cassandra-driver-core</artifactId>
<version>3.0.0</version>
</dependency>
<dependency>
<groupId>com.datastax.cassandra</groupId>
<artifactId>cassandra-driver-mapping</artifactId>
<version>3.0.0</version>
</dependency>
The cassandra project works good in stand alone. Can someone help me with this

Your project is complaining ClassNotFoundException:me.prettyprint.hom.CassandraPersistenceProvider which belongs to Cassandra hector client.
I am guessing your project was using hector core which is no longer active hector client github page. You have to migrate all dependencies to datastax's cassandra drivers and remove all hector-client related dependencies. check it here

Unable to resolve a dependency on URLUtil, conflicting requirements

I'm getting the following error when trying to compile my project:
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/httpclient/util/URIUtil
at org.apache.commons.vfs2.provider.URLFileName.getPathQueryEncoded(URLFileName.java:91)
at org.apache.commons.vfs2.provider.URLFileName.getURIEncoded(URLFileName.java:161)
at org.apache.commons.vfs2.provider.url.UrlFileObject.createURL(UrlFileObject.java:74)
at org.apache.commons.vfs2.provider.url.UrlFileObject.doAttach(UrlFileObject.java:63)
at org.apache.commons.vfs2.provider.AbstractFileObject.attach(AbstractFileObject.java:1505)
at org.apache.commons.vfs2.provider.AbstractFileObject.getType(AbstractFileObject.java:489)
.... (More project-scope traces)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.httpclient.util.URIUtil
at java.net.URLClassLoader$1.run(URLClassLoader.java:372)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 13 more
I have the following maven dependencies in my project, among others:
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.3.4</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-vfs2</artifactId>
<version>2.0</version>
</dependency>
I absolutely must depend on a HttpClient version 4.3.4 or greater because of other dependencies and various bugs we ran into with previous versions. After a bit of research, I discovered the class in question (URLUtil) was removed from HttpClient after HttpClient 3.1.
Is there any way to resolve this? Or another library I could use instead of vfs2? I'm attempting to write files over sftp using both user/pass and key authentication schemes.

As it turns out, the artifacts are different between the 3.x and 4.x releases of HttpClient. All I had to do was include:
<dependency>
<groupId>commons-httpclient</groupId>
<artifactId>commons-httpclient</artifactId>
<version>3.1</version>
</dependency>
Silly me, thinking that they'd override each-other.

NoClassDefFoundError: org/apache/commons/lang3/StringUtils

I'm trying to run the sample project with this library and I get the following error:
Exception in thread "main" java.lang.NoClassDefFoundError:
org/apache/commons/lang3/StringUtils
at com.github.devnied.emvnfccard.enums.EmvCardScheme.<init>(EmvCardScheme.java:97)
at com.github.devnied.emvnfccard.enums.EmvCardScheme.<clinit>(EmvCardScheme.java:32)
at com.github.devnied.emvnfccard.parser.EmvParser.readWithAID(EmvParser.java:277)
at com.github.devnied.emvnfccard.parser.EmvParser.readEmvCard(EmvParser.java:120)
at com.github.devnied.emvpcsccard.Main.main(Main.java:64)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.lang3.StringUtils
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)
... 5 more
I've added commons-lang-2.6.jar & commons-lang3-3.1-sources.jar in libs and classpath
Main class:
public static void main(final String[] args) throws CardException {
Main pcsc = new Main();
CardTerminal ct = pcsc.selectCardTerminal();
Card c = null;
if (ct != null) {
c = pcsc.establishConnection(ct);
CardChannel channel = c.getBasicChannel();
PcscProvider provider = new PcscProvider(channel);
EmvParser parser = new EmvParser(provider, false);
parser.readEmvCard();
c.disconnect(false);
}
}
I have referred to the following links:
java.lang.ClassNotFoundException: org.apache.commons.lang.StringUtils from BaseClassLoader
Struts 2 framework demo
http://apache-commons.680414.n4.nabble.com/lang-java-lang-NoClassDefFoundError-org-apache-commons-lang-StringUtils-Exception-td3735881.html

I have added commons-lang-2.6.jar & commons-lang3-3.1-sources.jar...
Here's your problem: commons-lang-2.6.jar doesn't contain the org.apache.commons.lang3 package, since that's part of version 3, and commons-lang3-3.1-sources.jar contains the source code, not the byte code.
You need to include commons-lang3-3.1.jar instead.

If you're using Maven, put this inside your pom.xml file:
Maven Central Repository for Commons Lang:
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.6</version>
</dependency>
Maven Central Repository for Apache Commons Lang:
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.12</version>
</dependency>
Don't forget: Update Maven Project
Apache Commons Lang ™ Dependency Information
Last Published: 2 March 2021 | Version: 3.12
Apache Maven
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.12</version>
</dependency>
Apache Buildr
'org.apache.commons:commons-lang3:jar:3.12'
Apache Ivy
<dependency org="org.apache.commons" name="commons-lang3" rev="3.12">
<artifact name="commons-lang3" type="jar" />
</dependency>
Groovy Grape
#Grapes(
#Grab(group='org.apache.commons', module='commons-lang3', version='3.12')
)
Gradle/Grails
compile 'org.apache.commons:commons-lang3:3.12'
Scala SBT
libraryDependencies += "org.apache.commons" % "commons-lang3" % "3.12"
Leiningen
[org.apache.commons/commons-lang3 "3.12"]
Reference:
https://commons.apache.org/proper/commons-lang/dependency-info.html

Yo adding the below and update maven project worked like a charm:
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.1</version>
</dependency>

Adding below worked for me:
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-math3</artifactId>
<version>3.6.1</version>
</dependency>

When everything else is correct, rarely jar file gets corrupted. Ensure you don't see error something like below while compiling
[ERROR] error reading
C:\Users\Mohan\.m2\repository\org\apache\commons\commons-lang3\3.7\commons-lang3-3.7.jar;
ZipFile invalid LOC header (bad signature)

I was having this issue in IJ version 2016 after updating it to 2018.3.4 and clicking "Generate sources and update folders for all projects" at Maven options tab the issue went away

Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: javax/servlet/ServletContext

I am trying to set up the JUnit test with the MockMVC.
From this link - "either must not use the Servlet API or you need to provide it on the classpath".
I added the following to file pom.xml, but it didn't work. What should I do?
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
Here is the trace:
org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.springframework.test.context.web.WebDelegatingSmartContextLoader]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: javax/servlet/ServletContext
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:163)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:105)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:130)
at org.springframework.test.context.ContextLoaderUtils.resolveContextLoader(ContextLoaderUtils.java:118)
at org.springframework.test.context.ContextLoaderUtils.buildMergedContextConfiguration(ContextLoaderUtils.java:594)
at org.springframework.test.context.ContextLoaderUtils.buildMergedContextConfiguration(ContextLoaderUtils.java:560)
at org.springframework.test.context.TestContext.<init>(TestContext.java:99)
at org.springframework.test.context.TestContextManager.<init>(TestContextManager.java:117)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTestContextManager(SpringJUnit4ClassRunner.java:119)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.<init>(SpringJUnit4ClassRunner.java:108)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:31)
at org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:24)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:29)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:24)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:63)
Caused by: java.lang.NoClassDefFoundError: javax/servlet/ServletContext
at org.springframework.test.context.web.WebDelegatingSmartContextLoader.<init>(WebDelegatingSmartContextLoader.java:36)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:148)
... 22 more
Caused by: java.lang.ClassNotFoundException: javax.servlet.ServletContext
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 28 more`enter code here`
Based on the comments, I changed the scope to compile, and then it seems past the issue of class not found!
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>compile</scope>
</dependency>

It is a common issue. As Aniket Thakur said, the container will provide all Java Servlet classes at runtime. But during the tests you need a JAR file to provide them.
The dependency you added to your POM is only the API: it declares everything but contains no implementation. So it will not help. Anyway, you declare it as "provided" which says to Maven "don't worry, I know it will be on classpath".
You have to add a dependency that bring the implementation of all Java EE classes in test scope. In my projects I use GlassFish even if I later use Tomcat as a Servlet container, but I once found the dependency googling for the same problem:
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.servlet</artifactId>
<version>3.0</version>
<scope>test</scope>
</dependency>
It should solve your NoClassDefFoundError problem.

Class is not found at runtime, but it is available at compile time. You need to add the corresponding JAR file so that it can be found at runtime. I generally use Ivy and in Eclipse I do:
Menu Project → Properties → Deployment Assembly → Add → Java Build Path Entries → Ivy → Finish
There must be something similar for Maven as well.
Also you need javax.servlet-api only during compile time as the container you are using to run the server will provide the actual APIs at runtime.

ClassNotFoundException HttpRequestInterceptor

I am getting this weird exception on this line:
HttpSolrServer server = new HttpSolrServer("http://localhost:8080/solr/");
Stack trace:
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/http/HttpRequestInterceptor
at com.polgar.dipl.index.SolrIndex.init(SolrIndex.java:36)
at com.polgar.dipl.index.SolrIndex.getInstance(SolrIndex.java:30)
at com.polgar.dipl.main.ArticleIndexer.main(ArticleIndexer.java:44)
Caused by: java.lang.ClassNotFoundException: org.apache.http.HttpRequestInterceptor
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)
... 3 more

Getting the same problem. We both must be playing with Solr 3.6
I had to download the HttpClient jars from the HttpComponents project. They didn't seem to be included with Solr 3.6
http://hc.apache.org/downloads.cgi
3.6 Has a new version of the client that uses the new HttpComponents (4.0) stuff, not the old HttpClient (3.1) stuff. The old 3.1 jar is there, but not the new one.
Once I copied the jars over, it worked.
I copied the following (not all may be needed).
httpclient-4.1.3.jar
httpclient-cache-4.1.3.jar
httpcore-4.1.4.jar
httpmime-4.1.3.jar
works for me, now.

If you are using Maven to include SOLRJ, you'll also want the following phrases in your POM:
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.2.1</version>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpmime</artifactId>
<version>4.2.1</version>
</dependency>

Looks like you are missing the HttpClient Jar file in your runtime classpath.

I was also facing this issue. To resolve this, I have done following:
Checked the versions available of http components in your "~.m2\repository\org\apache\httpcomponents" directory
Based on that add following entries in your pom.xml file and rebuild your project by running mvn clean install and mvn eclipse:eclipse command one by one.
(If you are behind the proxy, make sure you have provided essential configuration in your settings.xml file)
This should resolve the problem, It did for me. :)
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.2.3</version>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpmime</artifactId>
<version>4.2.3</version>
</dependency>