Drools hello world maven dependencies - java

I'm trying to run very simple application using Drools and for a couple of hours now can't set up pom.xml with all dependencies.
Here is how it looks now:
<dependencies>
<!-- Drools engine -->
<dependency>
<groupId>org.drools</groupId>
<artifactId>drools-core</artifactId>
<version>5.4.0.Final</version>
</dependency>
<dependency>
<groupId>org.drools</groupId>
<artifactId>drools-compiler</artifactId>
<version>5.4.0.Final</version>
</dependency>
<!-- Test -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.7</version>
<scope>test</scope>
</dependency>
</dependencies>
Just like in
https://community.jboss.org/wiki/DroolsMaven
But what I get:
org.drools.RuntimeDroolsException: Unable to load dialect 'org.drools.rule.builder.dialect.java.JavaDialectConfiguration:java:org.drools.rule.builder.dialect.java.JavaDialectConfiguration'
at org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBuilderConfiguration.java:313)
at org.drools.compiler.PackageBuilderConfiguration.buildDialectConfigurationMap(PackageBuilderConfiguration.java:298)
at org.drools.compiler.PackageBuilderConfiguration.init(PackageBuilderConfiguration.java:187)
at org.drools.compiler.PackageBuilderConfiguration.<init>(PackageBuilderConfiguration.java:160)
at org.drools.builder.impl.KnowledgeBuilderFactoryServiceImpl.newKnowledgeBuilderConfiguration(KnowledgeBuilderFactoryServiceImpl.java:26)
at org.drools.builder.KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration(KnowledgeBuilderFactory.java:85)
yada-yada-yada
Caused by: java.lang.RuntimeException: The Janino jar is not in the classpath
If I try to add Janino I get another exception about some missing classes(I don't think I should add Janino here anyway as it should be a dependency of something else).
Do I miss anything in my pom?
Thanks!
Leonty


By default, drools-compiler uses the eclipse compiler (JavaDialectConfiguration.ECLIPSE) for the java dialect which is a transitive dependency:
<dependency>
<groupId>org.eclipse.jdt.core.compiler</groupId>
<artifactId>ecj</artifactId>
</dependency>
However, if you prefer the janino compiler(JavaDialectConfiguration.JANINO), you need to add the janino dependency yourself because it is an optional transitive dependency:
<dependency>
<groupId>org.codehaus.janino</groupId>
<artifactId>janino</artifactId>
<optional>true</optional>
</dependency>
Look at the droolsjbpm-parent pom to find out which version to use.


Turned out just the right version of Janino is needed for Drools 5.4.0 Final: 2.5.16
Newer versions luck class used in Drools.
<dependencies>
<!-- Drools engine -->
<dependency>
<groupId>org.drools</groupId>
<artifactId>drools-core</artifactId>
<version>5.4.0.Final</version>
</dependency>
<dependency>
<groupId>org.drools</groupId>
<artifactId>drools-compiler</artifactId>
<version>5.4.0.Final</version>
</dependency>
<dependency>
<groupId>org.codehaus.janino</groupId>
<artifactId>janino</artifactId>
<version>2.5.16</version>
</dependency>
<!-- Test -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.7</version>
<scope>test</scope>
</dependency>
</dependencies>

Related

Spring boot 2.2 activemq jetty conflict

I am trying to upgrade Spring boot to the version 2.2 together with jetty starter.
I get these errors due to jetty version conflict
The following method did not exist:
'org.eclipse.jetty.websocket.server.NativeWebSocketConfiguration org.eclipse.jetty.websocket.server.NativeWebSocketServletContainerInitializer.initialize(org.eclipse.jetty.servlet.ServletContextHandler)'
The method's class, org.eclipse.jetty.websocket.server.NativeWebSocketServletContainerInitializer, is available from the following locations:
jar:file:/some-dir/target/p3.0.166-SNAPSHOT.war!/WEB-INF/lib/jetty-all-9.4.19.v20190610-uber.jar!/org/eclipse/jetty/websocket/server/NativeWebSocketServletContainerInitializer.class
jar:file:/some-dir/target/p3.0.166-SNAPSHOT.war!/WEB-INF/lib/websocket-server-9.4.20.v20190813.jar!/org/eclipse/jetty/websocket/server/NativeWebSocketServletContainerInitializer.class
I have activemq dependency which brings in it's own jetty-all versioned 9.4.19 dependency which is in conflict with spring-boot 2.2 jetty (9.4.20)
And part of my pom.xml is:
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jetty</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!--
Jsp-api isn't standard in spring boot
-->
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>${jsp.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<scope>provided</scope>
</dependency>
<!-- artefacts enable JSP running in spring-boot -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<dependency>
<groupId>org.eclipse.jetty</groupId>
<artifactId>apache-jsp</artifactId>
</dependency>
<dependency>
<groupId>org.eclipse.jetty</groupId>
<artifactId>apache-jstl</artifactId>
</dependency>
<!--
Used to be a single artifact.
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
Newer versions splits the interface and implementation.
This suggests to use a Glassfish implementation.
https://www.andygibson.net/blog/quickbyte/jstl-missing-from-maven-repositories/
The one we used had an Apache implementation, so going with that.
https://stackoverflow.com/a/24444342
-->
<dependency>
<groupId>org.apache.taglibs</groupId>
<artifactId>taglibs-standard-spec</artifactId>
<version>${taglibs.version}</version>
</dependency>
<dependency>
<groupId>org.apache.taglibs</groupId>
<artifactId>taglibs-standard-impl</artifactId>
<version>${taglibs.version}</version>
</dependency>
<!-- Unit test dependencies -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.easytesting</groupId>
<artifactId>fest-assert</artifactId>
<version>1.4</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-core</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<scope>test</scope>
</dependency>
<!-- html compressing is used by hrmanager in the JSP -->
<dependency>
<groupId>com.googlecode.htmlcompressor</groupId>
<artifactId>htmlcompressor</artifactId>
<version>1.5.2</version>
</dependency>
<!-- ApacheMQ HTTP jarfile set -->
<dependency>
<groupId>org.apache.activemq</groupId>
<artifactId>activemq-client</artifactId>
</dependency>
<dependency>
<groupId>org.apache.activemq</groupId>
<artifactId>activemq-http</artifactId>
</dependency>
</dependencies>
Any idea how I can fix this?

ActiveMQ is wrong here.
jetty-all is not meant to be used as a dependency in a project.
See https://www.eclipse.org/lists/jetty-users/msg06030.html
It only exists as a command line tool for the documentation to educate folks about basic featureset of Jetty.
It does not, and cannot, contain all of Jetty.
A single artifact with everything that Jetty produces is impossible.
As #Shilan pointed out, excluding jetty-all is the correct solution.
The use of the other appropriate dependencies (by spring-boot-starter-jetty it seems) will already pull in the correct Jetty transitive dependencies that you need.
You can use $ mvn dependency:tree from the command line to see this (before and after excluding jetty-all)
You might want to run one of the duplicate class finder maven plugins to see what other duplicate classes you have going on and correct for those as well.
https://github.com/ning/maven-duplicate-finder-plugin
https://github.com/basepom/duplicate-finder-maven-plugin

java.lang.ClassNotFoundException: org.springframework.boot.autoconfigure.logging.AutoConfigurationReportLoggingInitializer

I was trying to run a JAR file for the project, but the following error shows up :
Caused by: java.lang.ClassNotFoundException: org.springframework.boot.autoconfigure.logging.AutoConfigurationReportLoggingInitializer
I tried to look for the class manually within my libraries, but the class was not present. It seems the specific class is not present in the current version of spring-boot-starter-web. Below is the POM for the project
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-parent -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>2.1.3.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework.data/spring-data-jpa -->
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
<version>2.1.2.RELEASE</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>4.0.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-dbcp2</artifactId>
<version>2.1.1</version>
</dependency>

I added my project folder resources/META-INFO/spring.factories. After that, I got the same error above. I remove the folder and my project starts well!

Try adding the following dependency :
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
<version>2.1.3.RELEASE</version>
</dependency>
The dependency spring-boot-starter includes the dependencies for logging spring-boot-starter-logging, which has the class org.springframework.boot.autoconfigure.logging.AutoConfigurationReportLoggingInitializer

How to convert HTML to Atlassian Wiki markup?

I need to change HTML string to Atlassian Markup String.
I'm trying to do this in Java app (witchout Atlassian SDK).
I found the proper solution here
But I still have problem:
java.lang.NoClassDefFoundError: com/opensymphony/util/TextUtils
I downloaded additional dependencies:
<dependency>
<groupId>opensymphony</groupId>
<artifactId>xwork</artifactId>
<version>1.2.5-atlassian-8</version>
<systemPath>C:\Users\exo\eclipse-workspace\JiraXMLToCSV\xwork-1.2.5-atlassian-8.jar</systemPath>
<scope>system</scope>
</dependency>
<dependency>
<groupId>org.jsoup</groupId>
<artifactId>jsoup</artifactId>
<version>1.10.3</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.8.2</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.atlassian.renderer</groupId>
<artifactId>atlassian-renderer</artifactId>
<version>8.0.5</version>
<systemPath>C:\Users\exo\eclipse-workspace\JiraXMLToCSV\atlassian-renderer-8.0.5.jar</systemPath>
<scope>system</scope>
</dependency>
Should I add some other dependencies?

Add this:
<dependency>
<groupId>com.opensymphony</groupId>
<artifactId>xwork</artifactId>
<version>2.1.3</version>
</dependency>

Could not initialize com.ibm.mq.MQEnvironment

I've upgraded my maven dependencies for IBM MQ from these(version: 6.0.2.5):
<dependency>
<groupId>com.ibm</groupId>
<artifactId>mq</artifactId>
<version>${ibm-mq-version}</version>
</dependency>
<dependency>
<groupId>com.ibm</groupId>
<artifactId>mqjms</artifactId>
<version>${ibm-mq-version}</version>
</dependency>
<dependency>
<groupId>com.ibm.disthub2</groupId>
<artifactId>dhbcore</artifactId>
<version>DH610-Gold</version>
</dependency>
<dependency>
<groupId>com.ibm</groupId>
<artifactId>mqetclient</artifactId>
<version>${ibm-mq-version}</version>
</dependency>
To that(version: 7.5.0.5):
<dependency>
<groupId>com.ibm</groupId>
<artifactId>mq-jms-all</artifactId>
<version>${ibm-mq-version}</version>
</dependency>
Now, everytime I try to run my project, I get the following error:
nested exception is java.lang.NoClassDefFoundError: Could not initialize class com.ibm.mq.MQEnvironment
The maven-dependency is imported correctly and is also visible in Eclipse in the maven-dependencies-tab. Also i see the com.ibm.mq.jar in the classpath.
I've googled a lot and the only real solution, which worked for some people was, to add the connector.jar. But I'm already using the jar:
<dependency>
<groupId>javax.resource</groupId>
<artifactId>connector</artifactId>
<version>${connector-version}</version>
</dependency>
Am I missing something?

IBM MQ from these(version: 6.0.2.5):
To that(version: 7.5.0.5):
IBM moved the MQException to the 'com.ibm.mq.jmqi.jar' file.
As per the the MQ Knowledge Center, you need the following jar files for MQ JMS programming:
com.ibm.mq.commonservices.jar
com.ibm.mq.headers.jar
com.ibm.mq.pcf.jar
com.ibm.mq.jmqi.jar
connector.jar
jms.jar
dhbcore.jar
rmm.jar
jndi.jar
ldap.jar
fscontext.jar
providerutil.jar
CL3Export.jar
CL3Nonexport.jar

Exactly the same problem and this fixed it
<dependency>
<groupId>javax.resource</groupId>
<artifactId>connector</artifactId>
<version>${connector-version}</version>
</dependency>
These are my dependencies.
<dependency>
<groupId>com.ibm.mq</groupId>
<artifactId>com.ibm.mq.commonservices</artifactId>
<version>7.0.1.4</version>
</dependency>
<dependency>
<groupId>com.ibm.mq</groupId>
<artifactId>com.ibm.mq.headers</artifactId>
<version>7.0.1.4</version>
</dependency>
<dependency>
<groupId>com.ibm.mq</groupId>
<artifactId>com.ibm.mq.jmqi</artifactId>
<version>7.0.1.4</version>
</dependency>
<dependency>
<groupId>com.ibm.mq</groupId>
<artifactId>com.ibm.mq.jms.Nojndi</artifactId>
<version>7.0.1.4</version>
</dependency>
<dependency>
<groupId>com.ibm.mq</groupId>
<artifactId>com.ibm.mqjms</artifactId>
<version>7.0.1.4</version>
</dependency>
<dependency>
<groupId>com.ibm.mq</groupId>
<artifactId>com.ibm.mq.soap</artifactId>
<version>7.0.1.4</version>
</dependency>
<dependency>
<groupId>com.ibm.mq</groupId>
<artifactId>com.ibm.mq</artifactId>
<version>7.0.1.4</version>
</dependency>
<dependency>
<groupId>com.ibm.mq</groupId>
<artifactId>com.ibm.mq.headers</artifactId>
<version>7.0.1.4</version>
</dependency>
<dependency>
<groupId>com.ibm.mq</groupId>
<artifactId>com.ibm.mq.pcf</artifactId>
<version>7.0.1.4</version>
</dependency>
<dependency>
<groupId>javax.resource</groupId>
<artifactId>connector</artifactId>
<version>1.5</version>
</dependency>
<dependency>
<groupId>com.ibm</groupId>
<artifactId>com.ibm.dhbcore</artifactId>
<version>7.0.1</version>
</dependency>
<dependency>
<groupId>com.ibm.mq</groupId>
<artifactId>CL3Nonexport</artifactId>
<version>${webspheremq.version}</version>
</dependency>
<dependency>
<groupId>com.ibm</groupId>
<artifactId>com.ibm.mqetclient</artifactId>
<version>7.0.1</version>
</dependency>

For Eclipse (Dynamic Web Project (Servlet)) you need copy files:
com.ibm.mq.commomservices.jar
com.ibm.mq.defaultconfig.jar
com.ibm.mq.headers.jar
com.ibm.mq.jar
com.ibm.mq.jmqi.jar
com.ibm.mq.jms.Nojndi.jar
com.ibm.mq.pcf.jar
com.ibm.mqetclient.jar
com.ibm.mqjms.jar
connector.jar
dhbcode.jar
fscontext.jar
jms.jar
to /WebContext/WEB-INF/lib, then add them into Project (Project -> Properties -> Java Build Path -> Add External JARs).
After all, go through these steps:
close project
close Eclipse
open Eclipse
open project.
Good Luck!

What maven artifacts do I need for spring hibernate and mysql support?

I have a IDEA project using maven2.
I want to use hibernate + mysql, what dependancies do I need?

first of all, I separate the versions from the artifacts:
<properties>
<spring.version>3.0.3.RELEASE</spring.version>
<hibernate.version>3.5.3-Final</hibernate.version>
<mysql.version>5.1.13</mysql.version>
<junit.version>4.7</junit.version>
</properties>
then I reference them like this:
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
<!-- perhaps using scope = provided, as this will often
be present on the app server -->
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<!-- or hibernate-entitymanager if you use jpa -->
<version>${hibernate.version}</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
That way you keep the versions all in one place and can easily update them, especially if you reference e.g. multiple spring artifacts.
BTW: these should be the current versions, but you can always look up current versions using MvnRepository.com

Pasting these dependencies into pom.xml after <depdendencies> should work:
<!-- MySQL database driver -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.9</version>
</dependency>
<!-- Hibernate framework -->
<dependency>
<groupId>hibernate</groupId>
<artifactId>hibernate3</artifactId>
<version>3.2.3.GA</version>
</dependency>
<!-- Hibernate library dependecy start -->
<dependency>
<groupId>dom4j</groupId>
<artifactId>dom4j</artifactId>
<version>1.6.1</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.1.1</version>
</dependency>
<dependency>
<groupId>commons-collections</groupId>
<artifactId>commons-collections</artifactId>
<version>3.2.1</version>
</dependency>
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>2.2</version>
</dependency>
<dependency>
<groupId>javax.transaction</groupId>
<artifactId>jta</artifactId>
<version>1.1</version>
</dependency>
<!-- Hibernate library dependecy end -->
Shamelessly cloned from http://www.mkyong.com/hibernate/quick-start-maven-hibernate-mysql-example/ (with the addition of jta as recommended by a commenter)
You may want to tweak the version numbers on the dependencies.
IntelliJ IDEA 9 can find Maven dependencies based on class name. If you start using a class which isn't available in the current dependencies you can get IntelliJ to help find it by using Alt-Enter.
I used this to great effect with a Java-base Subversion hook implementation I am building at work. I was able to get SVNKit and Google Guice dependencies into my project fairly easily this way.
MySQL in your case may be trickier since it is more of a runtime dependency when using Hibernate.

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