Hi,
I'm new to java programming. I need a help about implementing OSGI module and EJB. I wrote this simple OSGI bundle:
package com.cryptoLib; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; public class cryptoSha { public cryptoSha() { } public String stringHash(String hash) throws NoSuchAlgorithmException{ MessageDigest md = MessageDigest.getInstance("SHA-256"); md.update(hash.getBytes()); byte byteData[] = md.digest(); /** convert the byte to hex format */ StringBuilder sb = new StringBuilder(); for (int i = 0; i < byteData.length; i++) { sb.append(Integer.toString((byteData[i] & 0xff) + 0x100, 16).substring(1)); } return sb.toString(); } }
This is the Activator class:
package com.CL_24; import org.osgi.framework.BundleActivator; import org.osgi.framework.BundleContext; import com.cryptoLib.cryptoSha; import org.osgi.framework.ServiceRegistration; public class Activator implements BundleActivator { private ServiceRegistration reg; public void start(BundleContext context) throws Exception { cryptoSha ois = new cryptoSha(); reg = context.registerService(cryptoSha.class.getName(), ois, null); System.out.println("Module CL_24 is Loaded"); } public void stop(BundleContext context) throws Exception { reg.unregister(); System.out.println("Module CL_24 is Unloaded"); } }
This is the code which calls the OSGI bundle:
package com.SR_57; import com.CL_24.*; import com.cryptoLib.*; ........ @Named("loginController") @SessionScoped public class userCheck implements Serializable { private String user = null; private String password = null; public userCheck(){ } @Resource BundleContext context; ClassLoader classLoader = cryptoSha.class.getClassLoader(); Bundle bundle = ((BundleReference) classLoader).getBundle(); BundleContext load = bundle.getBundleContext(); .... }
The idea is to create a login form which calls OSGI bundle and plain password string is passed to the bundle. The bundle takes the string and converts it to SHA-256 encrypted string. Then the encrypted string is returned to the login bean. I know that it's not a good idea to work on something that you don't know but this is a part of a open source project and this part nobody wants to do it. I donate my free time for this project.
I use JBoss 7.1.0 for application server and Netbeans 7.1. This is the error stack:
com.sun.faces.mgbean.ManagedBeanCreationException: Cant instantiate class: com.SR_57.userCheck. at com.sun.faces.mgbean.BeanBuilder.newBeanInstance(BeanBuilder.java:193) at com.sun.faces.mgbean.BeanBuilder.build(BeanBuilder.java:102) at com.sun.faces.mgbean.BeanManager.createAndPush(BeanManager.java:409) at com.sun.faces.mgbean.BeanManager.create(BeanManager.java:269) at com.sun.faces.el.ManagedBeanELResolver.resolveBean(ManagedBeanELResolver.java:244) at com.sun.faces.el.ManagedBeanELResolver.getValue(ManagedBeanELResolver.java:116) at com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176) at com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203) at org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:71) at org.apache.el.parser.AstValue.getValue(AstValue.java:147) at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:189) at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109) at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:194) at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:182) at javax.faces.component.UIOutput.getValue(UIOutput.java:169) at com.sun.faces.renderkit.html_basic.HtmlBasicInputRenderer.getValue(HtmlBasicInputRenderer.java:205) at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.getCurrentValue(HtmlBasicRenderer.java:355) at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeEnd(HtmlBasicRenderer.java:164) at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:875) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1763) at javax.faces.render.Renderer.encodeChildren(Renderer.java:168) at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:845) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1756) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1759) at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:402) at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131) at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:121) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:594) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:151) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:362) at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:897) at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:626) at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:2033) at java.lang.Thread.run(Thread.java:722) Caused by: java.lang.ClassCastException: org.jboss.modules.ModuleClassLoader cannot be cast to org.osgi.framework.BundleReference at com.SR_57.userCheck.<init>(userCheck.java:57) 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:525) at java.lang.Class.newInstance0(Class.java:372) at java.lang.Class.newInstance(Class.java:325) at com.sun.faces.mgbean.BeanBuilder.newBeanInstance(BeanBuilder.java:188) ... 42 more
I will be glad if someone assist me for the OSGI code.
Write me if you have any questions.
best wishes
Peter