Technical blog

August 28, 2010

[How To] Convert a Maven Project to Eclipse Web Project

Filed under: java — Tags: — paawak @ 12:18

Eclipse WTP has this nice feature where it allows you to deploy, run and debug Web Applications from the IDE. You start by going to the Server View, adding the target server (like Apache Tomcat in our case) and then adding the Web Project to the server. This is how the view looks like:

addremovewebprojects_1

But I have often faced this problem: when I run mvn eclipse:eclipse on a Maven Web Project to convert it to an Eclipse project, it is not recognised as a Web Project by Eclipse. When I right-click on the server and select Add Remove Projects, it does not appear in the option box. But to me  mvn eclipse:eclipse -DdownloadSources=true -DdownloadJavadocs=true is indispensable as it downloads and links all the sources and JavaDocs, which comes very handy. On the other hand if I cannot add my project as a Web Project in Eclipse, running and debugging becomes a big issue. So how do I reconcile these two?

Solution 1: Specify the WTP Version

While running mvn eclipse:eclipse, specify the WTP Version by passing the -Dwtpversion=2.0 argument. The command looks like:

mvn eclipse:clean eclipse:eclipse -DdownloadSources=true -DdownloadJavadocs=true -Dwtpversion=2.0

Note that as of this writing, the supported versions of WTP are  1.0, 1.5, 2.0 and R7.

Solution 2: Convert it to a Facted Project

Right click on the project, go to Properties, then select Project Facets.

converttofacetedproject

Another dialog appears having the available facets.

selectdynamicwebproject

Select Dynamic Web Module.

Solution 3: Manual editing

I like this best as it gives lot of flexibility around configuration. First you need to modify the .project file as shown:

<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
	<name>MyWebProject</name>
	<comment></comment>
	<projects>
	</projects>
	<buildSpec>
		<buildCommand>
			<name>org.eclipse.wst.jsdt.core.javascriptValidator</name>
			<arguments>
			</arguments>
		</buildCommand>
		<buildCommand>
			<name>org.eclipse.jdt.core.javabuilder</name>
			<arguments>
			</arguments>
		</buildCommand>
		<buildCommand>
			<name>org.eclipse.wst.common.project.facet.core.builder</name>
			<arguments>
			</arguments>
		</buildCommand>
		<buildCommand>
			<name>org.eclipse.wst.validation.validationbuilder</name>
			<arguments>
			</arguments>
		</buildCommand>
	</buildSpec>
	<natures>
		<nature>org.eclipse.jem.workbench.JavaEMFNature</nature>
		<nature>org.eclipse.wst.common.modulecore.ModuleCoreNature</nature>
		<nature>org.eclipse.wst.common.project.facet.core.nature</nature>
		<nature>org.eclipse.jdt.core.javanature</nature>
		<nature>org.eclipse.wst.jsdt.core.jsNature</nature>
	</natures>
</projectDescription>

Then, inside the .settings directory, you need to create two files called org.eclipse.wst.common.component and org.eclipse.wst.common.project.facet.core.xml.

org.eclipse.wst.common.component

<?xml version="1.0" encoding="UTF-8"?>
<project-modules id="moduleCoreId" project-version="1.5.0">
    <wb-module deploy-name="MyWebProject">
        <wb-resource deploy-path="/" source-path="/src/main/webapp"/>
        <wb-resource deploy-path="/WEB-INF/classes" source-path="/src/main/java"/>
        <property name="context-root" value="MyWebProject"/>
        <property name="java-output-path" value="/MyWebProject/build/classes"/>
    </wb-module>
</project-modules>

org.eclipse.wst.common.project.facet.core.xml

<?xml version="1.0" encoding="UTF-8"?>
<faceted-project>
  <runtime name="Apache Tomcat v7.0"/>
  <fixed facet="jst.web"/>
  <fixed facet="wst.jsdt.web"/>
  <fixed facet="java"/>
  <installed facet="java" version="1.6"/>
  <installed facet="jst.web" version="3.0"/>
  <installed facet="wst.jsdt.web" version="1.0"/>
</faceted-project>

August 22, 2010

Creating an EAR with Maven

Filed under: java — Tags: , — paawak @ 00:50

Maven is the build tool of choice for many people due to the simplicity and flexibility of use. The real strength of Maven is vetted when handling real complex projetcs consisting of tens of modules, each requiring elaborate build requirements.

I had faced an uphill task of Mavenising one of our EAR projects. As is the typical case, our project consisted of a EJB module and a WAR module, package together in a EAR module. It was a bit complex as we had to deploy the same application in JBoss and Glassfish. I will write some of that experience here.

Let us consider an enterprise application having a structure as show below:

Project Structure

I will briefly explain what the modules stand for:

  1. swayam-ear: This is the enterprise application
  2. swayam-ejb: Is the EJB module
  3. swayam-war: Is the web module
  4. swayam-shared: Has the ejb remote interfaces. As the name indicates, its shared by the sawaym-ejb and the swayam-war modules
  5. swayam-ear-builder: Used for building all the modules

I am using Netbeans (6.8) and Glassfish for convinience. But you can pretty much use anything.

I have kept things pretty simple. This is how the Remote interface looks like (its a Stateless Session Bean):

@Remote
public interface MySessionBeanRemote {
 
    String sayHello();
 
}

And this is how I access it from the servlet:

...
MySessionBeanRemote remoteBean = InitialContext.doLookup(MySessionBeanRemote.class.getName());
...

Mavenising the EJB

We will use the maven-ejb-plugin for this. This is how the pom looks like:

    <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
 
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.swayam.eardemo</groupId>
    <artifactId>swayam-ejb</artifactId>
    <version>1.0.0</version>
 
    <packaging>ejb</packaging>
    <name>swayam-ejb</name>
 
    <build>
        <sourceDirectory>${basedir}/src</sourceDirectory>
 
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
            </plugin>
            <plugin>
                <artifactId>maven-ejb-plugin</artifactId>
                <configuration>
                    <ejbVersion>3.0</ejbVersion>
                    <archive>
                        <manifest>
                            <addClasspath>true</addClasspath>
                        </manifest>
                    </archive>
                </configuration>
            </plugin>
 
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.6</source>
                    <target>1.6</target>
                </configuration>
            </plugin>
 
        </plugins>
    </build>
    <dependencies>
        <dependency>
            <groupId>javax</groupId>
            <artifactId>javaee-api</artifactId>
            <version>6.0</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>com.swayam.eardemo</groupId>
            <artifactId>swayam-shared</artifactId>
            <version>1.0.0</version>
        </dependency>
    </dependencies>
 
</project>

Note that the packaging is ejb and not jar.

Mavenising the WAR

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.swayam.eardemo</groupId>
    <artifactId>swayam-war</artifactId>
    <version>1.0.0</version>
 
    <packaging>war</packaging>
    <name>swayam-war</name>
 
    <pluginRepositories>
        <pluginRepository>
            <id>maven.java.net</id>
            <name>Java.net Maven2 Repository</name>
            <url>http://download.java.net/maven/2</url>
        </pluginRepository>
    </pluginRepositories>
 
    <build>
        <finalName>swayam-war</finalName>
        <sourceDirectory>${basedir}/src/java</sourceDirectory>
 
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.6</source>
                    <target>1.6</target>
                </configuration>
            </plugin>
            <plugin>
                <artifactId>maven-war-plugin</artifactId>
                <version>2.0</version>
                <configuration>
                    <webResources>
                        <resource>
                            <directory>${basedir}/web</directory>
                            <excludes>
                                <exclude>CVS/**</exclude>
                                <exclude>WEB-INF/lib/*</exclude>
                            </excludes>
                        </resource>
                    </webResources>
                </configuration>
            </plugin>
        </plugins>
    </build>
 
    <dependencies>
        <dependency>
            <groupId>com.swayam.eardemo</groupId>
            <artifactId>swayam-shared</artifactId>
            <version>1.0.0</version>
        </dependency>                
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.4</version>
            <scope>provided</scope>
        </dependency>
    </dependencies>    
 
</project>

Mavenising the EAR

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
 
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.swayam.eardemo</groupId>
    <artifactId>swayam-ear</artifactId>
    <version>1.0.0</version>
 
    <packaging>ear</packaging>
    <name>swayam-ear</name>
 
    <pluginRepositories>
        <pluginRepository>
            <id>maven.java.net</id>
            <name>Java.net Maven2 Repository</name>
            <url>http://download.java.net/maven/2</url>
        </pluginRepository>
    </pluginRepositories>
 
    <build>
        <finalName>swayam-ear</finalName>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.6</source>
                    <target>1.6</target>
                </configuration>
            </plugin>
            <plugin>
                <artifactId>maven-resources-plugin</artifactId>
                <version>2.3</version>
                <configuration>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
            <plugin>
                <artifactId>maven-ear-plugin</artifactId>
                <version>2.4.1</version>
                <configuration>
                    <modules>
                        <webModule>
                            <groupId>com.swayam.eardemo</groupId>
                            <artifactId>swayam-war</artifactId>
                            <bundleFileName>swayam-war.war</bundleFileName>
                            <contextRoot>/swayam-war</contextRoot>
                        </webModule>
                        <ejbModule>
                            <groupId>com.swayam.eardemo</groupId>
                            <artifactId>swayam-ejb</artifactId>
                            <bundleFileName>swayam-ejb.jar</bundleFileName>
                        </ejbModule>
                    </modules>
                </configuration>
            </plugin>
 
        </plugins>
    </build>
 
    <dependencies>
        <dependency>
            <groupId>com.swayam.eardemo</groupId>
            <artifactId>swayam-war</artifactId>
            <version>${swayam-version}</version>
            <type>war</type>
        </dependency>
        <dependency>
            <groupId>com.swayam.eardemo</groupId>
            <artifactId>swayam-ejb</artifactId>
            <version>${swayam-version}</version>
            <type>ejb</type>
        </dependency>
    </dependencies>
 
    <properties>
        <swayam-version>1.0.0</swayam-version>
    </properties>
 
</project>

The most important thing here is the type tag inside the dependency tag. Without this, it will not work.

Putting it all together

Its often very cumbersome to build these modules one by one manually when one of them changes. This is more so in a development environment. So, I will conclude with one pom for building all the modules at one go. This pom is present in the swayam-ear-builder module.

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.swayam.eardemo</groupId>
  <artifactId>swayam-ear-builder</artifactId>
  <packaging>pom</packaging>
  <version>1.0.0</version>
  <name>swayam-ear-builder</name>
 
  <modules>
    <module>../swayam-ear</module>
    <module>../swayam-ejb</module>
    <module>../swayam-war</module>
    <module>../swayam-shared</module>
  </modules>
 
</project>

Note that the path of the modules are relative to the pom.
You can build the EAR project and deploy it on Glassfish or JBoss. Once successfully deployed, you can open http://localhost:8080/swayam-war/EjbInvoker This is how it looks like:

screenshot-servlet-ejbinvoker-google-chrome

Resources

  1. Sources
  2. Binaries

May 19, 2010

[JBoss/Maven] org.jboss.xb.binding.JBossXBRuntimeException: Failed to create a new SAX parser

Filed under: java — Tags: , — paawak @ 01:09

Sometimes when using spring framework or apache commons libraries on JBoss server [JBoss - 5.1.0], when it is built by maven, you get the following exception:

org.jboss.xb.binding.JBossXBRuntimeException: Failed to create a new SAX
parser
at org.jboss.xb.binding.UnmarshallerFactory
$UnmarshallerFactoryImpl.newUnmarshaller(UnmarshallerFactory.java:100)
at
org.jboss.web.tomcat.service.deployers.JBossContextConfig.processContextConfig(JBossContextConfig.java:549)
at
org.jboss.web.tomcat.service.deployers.JBossContextConfig.init(JBossContextConfig.java:536)
at
org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:279)
at
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
at
org.apache.catalina.core.StandardContext.init(StandardContext.java:5436)
at
org.apache.catalina.core.StandardContext.start(StandardContext.java:4148)
at
org.jboss.web.tomcat.service.deployers.TomcatDeployment.performDeployInternal(TomcatDeployment.java:310)
at
org.jboss.web.tomcat.service.deployers.TomcatDeployment.performDeploy(TomcatDeployment.java:142)
at
org.jboss.web.deployers.AbstractWarDeployment.start(AbstractWarDeployment.java:461)
at org.jboss.web.deployers.WebModule.startModule(WebModule.java:118)
at org.jboss.web.deployers.WebModule.start(WebModule.java:97)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:157)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:96)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
at
org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:668)
at
org.jboss.system.microcontainer.ServiceProxy.invoke(ServiceProxy.java:206)
at $Proxy38.start(Unknown Source)
at
org.jboss.system.microcontainer.StartStopLifecycleAction.installAction(StartStopLifecycleAction.java:42)
at
org.jboss.system.microcontainer.StartStopLifecycleAction.installAction(StartStopLifecycleAction.java:37)
at
org.jboss.dependency.plugins.action.SimpleControllerContextAction.simpleInstallAction(SimpleControllerContextAction.java:62)
at
org.jboss.dependency.plugins.action.AccessControllerContextAction.install(AccessControllerContextAction.java:71)
at
org.jboss.dependency.plugins.AbstractControllerContextActions.install(AbstractControllerContextActions.java:51)
at
org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
at
org.jboss.system.microcontainer.ServiceControllerContext.install(ServiceControllerContext.java:286)
at
org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1631)
at
org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934)
at
org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082)
at
org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984)
at
org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:822)
at
org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553)
at
org.jboss.system.ServiceController.doChange(ServiceController.java:688)
at org.jboss.system.ServiceController.start(ServiceController.java:460)
at
org.jboss.system.deployers.ServiceDeployer.start(ServiceDeployer.java:163)
at
org.jboss.system.deployers.ServiceDeployer.deploy(ServiceDeployer.java:99)
at
org.jboss.system.deployers.ServiceDeployer.deploy(ServiceDeployer.java:46)
at
org.jboss.deployers.spi.deployer.helpers.AbstractSimpleRealDeployer.internalDeploy(AbstractSimpleRealDeployer.java:62)
at
org.jboss.deployers.spi.deployer.helpers.AbstractRealDeployer.deploy(AbstractRealDeployer.java:50)
at
org.jboss.deployers.plugins.deployers.DeployerWrapper.deploy(DeployerWrapper.java:171)
at
org.jboss.deployers.plugins.deployers.DeployersImpl.doDeploy(DeployersImpl.java:1439)
at
org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1157)
at
org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1178)
at
org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1210)
at
org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:1098)
at
org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
at
org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1631)
at
org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934)
at
org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082)
at
org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984)
at
org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:822)
at
org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553)
at
org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:781)
at
org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:702)
at
org.jboss.system.server.profileservice.repository.MainDeployerAdapter.process(MainDeployerAdapter.java:117)
at
org.jboss.system.server.profileservice.repository.ProfileDeployAction.install(ProfileDeployAction.java:70)
at
org.jboss.system.server.profileservice.repository.AbstractProfileAction.install(AbstractProfileAction.java:53)
at
org.jboss.system.server.profileservice.repository.AbstractProfileService.install(AbstractProfileService.java:361)
at
org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
at
org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1631)
at
org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934)
at
org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082)
at
org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984)
at
org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:822)
at
org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553)
at
org.jboss.system.server.profileservice.repository.AbstractProfileService.activateProfile(AbstractProfileService.java:306)
at
org.jboss.system.server.profileservice.ProfileServiceBootstrap.start(ProfileServiceBootstrap.java:271)
at
org.jboss.bootstrap.AbstractServerImpl.start(AbstractServerImpl.java:461)
at org.jboss.Main.boot(Main.java:221)
at org.jboss.Main$1.run(Main.java:556)
at java.lang.Thread.run(Thread.java:619)
Caused by: org.jboss.xb.binding.JBossXBException: Failed to create a new
SAX parser
at
org.jboss.xb.binding.parser.sax.SaxJBossXBParser.(SaxJBossXBParser.java:97)
at
org.jboss.xb.binding.UnmarshallerImpl.(UnmarshallerImpl.java:56)
at org.jboss.xb.binding.UnmarshallerFactory
$UnmarshallerFactoryImpl.newUnmarshaller(UnmarshallerFactory.java:96)
… 74 more
Caused by: java.lang.ClassCastException:
org.apache.xerces.parsers.StandardParserConfiguration cannot be cast to
org.apache.xerces.xni.parser.XMLParserConfiguration
at org.apache.xerces.parsers.SAXParser.(Unknown Source)
at org.apache.xerces.parsers.SAXParser.(Unknown Source)
at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.(Unknown
Source)
at org.apache.xerces.jaxp.SAXParserImpl.(Unknown Source)
at org.apache.xerces.jaxp.SAXParserFactoryImpl.newSAXParser(Unknown
Source)
at
org.jboss.xb.binding.parser.sax.SaxJBossXBParser.(SaxJBossXBParser.java:92)
… 76 more
2010-05-18 14:04:41,262 ERROR
[org.jboss.web.tomcat.service.deployers.JBossContextConfig] (main) XML
error parsing: jboss.web/localhost/context.xml.default
org.jboss.xb.binding.JBossXBRuntimeException: Failed to create a new SAX
parser
at org.jboss.xb.binding.UnmarshallerFactory
$UnmarshallerFactoryImpl.newUnmarshaller(UnmarshallerFactory.java:100)
at
org.jboss.web.tomcat.service.deployers.JBossContextConfig.processContextConfig(JBossContextConfig.java:549)
at
org.jboss.web.tomcat.service.deployers.JBossContextConfig.init(JBossContextConfig.java:537)
at
org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:279)
at
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
at
org.apache.catalina.core.StandardContext.init(StandardContext.java:5436)
at
org.apache.catalina.core.StandardContext.start(StandardContext.java:4148)
at
org.jboss.web.tomcat.service.deployers.TomcatDeployment.performDeployInternal(TomcatDeployment.java:310)
at
org.jboss.web.tomcat.service.deployers.TomcatDeployment.performDeploy(TomcatDeployment.java:142)
at
org.jboss.web.deployers.AbstractWarDeployment.start(AbstractWarDeployment.java:461)
at org.jboss.web.deployers.WebModule.startModule(WebModule.java:118)
at org.jboss.web.deployers.WebModule.start(WebModule.java:97)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:157)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:96)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
at
org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:668)
at
org.jboss.system.microcontainer.ServiceProxy.invoke(ServiceProxy.java:206)
at $Proxy38.start(Unknown Source)
at
org.jboss.system.microcontainer.StartStopLifecycleAction.installAction(StartStopLifecycleAction.java:42)
at
org.jboss.system.microcontainer.StartStopLifecycleAction.installAction(StartStopLifecycleAction.java:37)
at
org.jboss.dependency.plugins.action.SimpleControllerContextAction.simpleInstallAction(SimpleControllerContextAction.java:62)
at
org.jboss.dependency.plugins.action.AccessControllerContextAction.install(AccessControllerContextAction.java:71)
at
org.jboss.dependency.plugins.AbstractControllerContextActions.install(AbstractControllerContextActions.java:51)
at
org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
at
org.jboss.system.microcontainer.ServiceControllerContext.install(ServiceControllerContext.java:286)
at
org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1631)
at
org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934)
at
org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082)
at
org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984)
at
org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:822)
at
org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553)
at
org.jboss.system.ServiceController.doChange(ServiceController.java:688)
at org.jboss.system.ServiceController.start(ServiceController.java:460)
at
org.jboss.system.deployers.ServiceDeployer.start(ServiceDeployer.java:163)
at
org.jboss.system.deployers.ServiceDeployer.deploy(ServiceDeployer.java:99)
at
org.jboss.system.deployers.ServiceDeployer.deploy(ServiceDeployer.java:46)
at
org.jboss.deployers.spi.deployer.helpers.AbstractSimpleRealDeployer.internalDeploy(AbstractSimpleRealDeployer.java:62)
at
org.jboss.deployers.spi.deployer.helpers.AbstractRealDeployer.deploy(AbstractRealDeployer.java:50)
at
org.jboss.deployers.plugins.deployers.DeployerWrapper.deploy(DeployerWrapper.java:171)
at
org.jboss.deployers.plugins.deployers.DeployersImpl.doDeploy(DeployersImpl.java:1439)
at
org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1157)
at
org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1178)
at
org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1210)
at
org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:1098)
at
org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
at
org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1631)
at
org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934)
at
org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082)
at
org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984)
at
org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:822)
at
org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553)
at
org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:781)
at
org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:702)
at
org.jboss.system.server.profileservice.repository.MainDeployerAdapter.process(MainDeployerAdapter.java:117)
at
org.jboss.system.server.profileservice.repository.ProfileDeployAction.install(ProfileDeployAction.java:70)
at
org.jboss.system.server.profileservice.repository.AbstractProfileAction.install(AbstractProfileAction.java:53)
at
org.jboss.system.server.profileservice.repository.AbstractProfileService.install(AbstractProfileService.java:361)
at
org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
at
org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1631)
at
org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934)
at
org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082)
at
org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984)
at
org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:822)
at
org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553)
at
org.jboss.system.server.profileservice.repository.AbstractProfileService.activateProfile(AbstractProfileService.java:306)
at
org.jboss.system.server.profileservice.ProfileServiceBootstrap.start(ProfileServiceBootstrap.java:271)
at
org.jboss.bootstrap.AbstractServerImpl.start(AbstractServerImpl.java:461)
at org.jboss.Main.boot(Main.java:221)
at org.jboss.Main$1.run(Main.java:556)
at java.lang.Thread.run(Thread.java:619)
Caused by: org.jboss.xb.binding.JBossXBException: Failed to create a new
SAX parser
at
org.jboss.xb.binding.parser.sax.SaxJBossXBParser.(SaxJBossXBParser.java:97)
at
org.jboss.xb.binding.UnmarshallerImpl.(UnmarshallerImpl.java:56)
at org.jboss.xb.binding.UnmarshallerFactory
$UnmarshallerFactoryImpl.newUnmarshaller(UnmarshallerFactory.java:96)
… 74 more
Caused by: java.lang.ClassCastException:
org.apache.xerces.parsers.StandardParserConfiguration cannot be cast to
org.apache.xerces.xni.parser.XMLParserConfiguration
at org.apache.xerces.parsers.SAXParser.(Unknown Source)
at org.apache.xerces.parsers.SAXParser.(Unknown Source)
at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.(Unknown
Source)
at org.apache.xerces.jaxp.SAXParserImpl.(Unknown Source)
at org.apache.xerces.jaxp.SAXParserFactoryImpl.newSAXParser(Unknown
Source)
at
org.jboss.xb.binding.parser.sax.SaxJBossXBParser.(SaxJBossXBParser.java:92)
… 76 more
2010-05-18 14:04:41,272 ERROR
[org.jboss.web.tomcat.service.deployers.JBossContextConfig] (main) XML
error parsing: WEB-INF/context.xml
org.jboss.xb.binding.JBossXBRuntimeException: Failed to create a new SAX
parser
at org.jboss.xb.binding.UnmarshallerFactory
$UnmarshallerFactoryImpl.newUnmarshaller(UnmarshallerFactory.java:100)
at
org.jboss.web.tomcat.service.deployers.JBossContextConfig.processContextConfig(JBossContextConfig.java:549)
at
org.jboss.web.tomcat.service.deployers.JBossContextConfig.init(JBossContextConfig.java:540)
at
org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:279)
at
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
at
org.apache.catalina.core.StandardContext.init(StandardContext.java:5436)
at
org.apache.catalina.core.StandardContext.start(StandardContext.java:4148)
at
org.jboss.web.tomcat.service.deployers.TomcatDeployment.performDeployInternal(TomcatDeployment.java:310)
at
org.jboss.web.tomcat.service.deployers.TomcatDeployment.performDeploy(TomcatDeployment.java:142)
at
org.jboss.web.deployers.AbstractWarDeployment.start(AbstractWarDeployment.java:461)
at org.jboss.web.deployers.WebModule.startModule(WebModule.java:118)
at org.jboss.web.deployers.WebModule.start(WebModule.java:97)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:157)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:96)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
at
org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:668)
at
org.jboss.system.microcontainer.ServiceProxy.invoke(ServiceProxy.java:206)
at $Proxy38.start(Unknown Source)
at
org.jboss.system.microcontainer.StartStopLifecycleAction.installAction(StartStopLifecycleAction.java:42)
at
org.jboss.system.microcontainer.StartStopLifecycleAction.installAction(StartStopLifecycleAction.java:37)
at
org.jboss.dependency.plugins.action.SimpleControllerContextAction.simpleInstallAction(SimpleControllerContextAction.java:62)
at
org.jboss.dependency.plugins.action.AccessControllerContextAction.install(AccessControllerContextAction.java:71)
at
org.jboss.dependency.plugins.AbstractControllerContextActions.install(AbstractControllerContextActions.java:51)
at
org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
at
org.jboss.system.microcontainer.ServiceControllerContext.install(ServiceControllerContext.java:286)
at
org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1631)
at
org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934)
at
org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082)
at
org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984)
at
org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:822)
at
org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553)
at
org.jboss.system.ServiceController.doChange(ServiceController.java:688)
at org.jboss.system.ServiceController.start(ServiceController.java:460)
at
org.jboss.system.deployers.ServiceDeployer.start(ServiceDeployer.java:163)
at
org.jboss.system.deployers.ServiceDeployer.deploy(ServiceDeployer.java:99)
at
org.jboss.system.deployers.ServiceDeployer.deploy(ServiceDeployer.java:46)
at
org.jboss.deployers.spi.deployer.helpers.AbstractSimpleRealDeployer.internalDeploy(AbstractSimpleRealDeployer.java:62)
at
org.jboss.deployers.spi.deployer.helpers.AbstractRealDeployer.deploy(AbstractRealDeployer.java:50)
at
org.jboss.deployers.plugins.deployers.DeployerWrapper.deploy(DeployerWrapper.java:171)
at
org.jboss.deployers.plugins.deployers.DeployersImpl.doDeploy(DeployersImpl.java:1439)
at
org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1157)
at
org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1178)
at
org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1210)
at
org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:1098)
at
org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
at
org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1631)
at
org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934)
at
org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082)
at
org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984)
at
org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:822)
at
org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553)
at
org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:781)
at
org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:702)
at
org.jboss.system.server.profileservice.repository.MainDeployerAdapter.process(MainDeployerAdapter.java:117)
at
org.jboss.system.server.profileservice.repository.ProfileDeployAction.install(ProfileDeployAction.java:70)
at
org.jboss.system.server.profileservice.repository.AbstractProfileAction.install(AbstractProfileAction.java:53)
at
org.jboss.system.server.profileservice.repository.AbstractProfileService.install(AbstractProfileService.java:361)
at
org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
at
org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1631)
at
org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934)
at
org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082)
at
org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984)
at
org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:822)
at
org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553)
at
org.jboss.system.server.profileservice.repository.AbstractProfileService.activateProfile(AbstractProfileService.java:306)
at
org.jboss.system.server.profileservice.ProfileServiceBootstrap.start(ProfileServiceBootstrap.java:271)
at
org.jboss.bootstrap.AbstractServerImpl.start(AbstractServerImpl.java:461)
at org.jboss.Main.boot(Main.java:221)
at org.jboss.Main$1.run(Main.java:556)
at java.lang.Thread.run(Thread.java:619)
Caused by: org.jboss.xb.binding.JBossXBException: Failed to create a new
SAX parser
at
org.jboss.xb.binding.parser.sax.SaxJBossXBParser.(SaxJBossXBParser.java:97)
at
org.jboss.xb.binding.UnmarshallerImpl.(UnmarshallerImpl.java:56)
at org.jboss.xb.binding.UnmarshallerFactory
$UnmarshallerFactoryImpl.newUnmarshaller(UnmarshallerFactory.java:96)
… 74 more
Caused by: java.lang.ClassCastException:
org.apache.xerces.parsers.StandardParserConfiguration cannot be cast to
org.apache.xerces.xni.parser.XMLParserConfiguration
at org.apache.xerces.parsers.SAXParser.(Unknown Source)
at org.apache.xerces.parsers.SAXParser.(Unknown Source)
at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.(Unknown
Source)
at org.apache.xerces.jaxp.SAXParserImpl.(Unknown Source)
at org.apache.xerces.jaxp.SAXParserFactoryImpl.newSAXParser(Unknown
Source)
at
org.jboss.xb.binding.parser.sax.SaxJBossXBParser.(SaxJBossXBParser.java:92)
… 76 more

This is caused by the presence of the xml-apis.jar and xerces-impl.jar.

Solution:

In the pom.xml, exclude these two jars in the dependency. Example:

 
<dependency>
        <groupId>commons-dbcp</groupId>
        <artifactId>commons-dbcp</artifactId>
        <version>1.2.1</version>
        <exclusions>
                <exclusion>
                    <groupId>xml-apis</groupId>
                    <artifactId>xml-apis</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>xerces</groupId>
                    <artifactId>xerces</artifactId>
                </exclusion>
        </exclusions>
</dependency>

July 21, 2008

Using Log4j with Maven Jetty plugin

Filed under: java — Tags: , — paawak @ 11:42

No extra configuration is needed. If log4j.xml or log4j.properties is present in the classpath, it is picked up and logs are directed to the specified appender(s). I found http://docs.codehaus.org/display/JETTY/Maven+Jetty+Plugin#MavenJettyPlugin-Logging overtly complicated and unnecessary. The logs can be redirected to a file by using a suitable appender in log4j.xml:

    <appender name="FILE" class="org.apache.log4j.RollingFileAppender">
        <param name="File" value="./target/dmsweb_log_file.log" />
        <param name="Append" value="false" >
        <param name="MaxBackupIndex" value="1" >
        <param name="MaxFileSize" value="500KB" >
        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern"
                value="%d [%t] %-5p %c - %m%n">
        </layout>
    </appender>

Running Jetty from a custom port through Maven

Filed under: java — Tags: , — paawak @ 11:40

There are two options:

  • pom.xml: 
            <plugin>
                <groupId>org.mortbay.jetty</groupId>
                <artifactId>maven-jetty-plugin</artifactId>
                <version>6.1.10</version>
                <configuration>                  
                    ...
                    </scanTargetPatterns>
                    <systemProperties>                      
                        <systemProperty>
                            <name>jetty.port</name>
                            <value>8080</value>
                        </systemProperty>                      
                    </systemProperties>
                </configuration>
            </plugin>
  • command prompt: mvn -Djetty.port=8090 jetty:run

The thing to remember is the command line value will override the value in pom.xml.

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