topic Re: Activiti Explorer 5.16.4 deployment to Weblogic Java 6 in Alfresco Archive

Activiti Explorer 5.16.4 deployment to Weblogic Java 6

ivan_activiti — Sun, 19 Oct 2014 17:05:40 GMT

I am trying to deploy activiti-webapp-explorer2 5.16.4 module to Weblogic running on Java 6 and I am getting the following exception:java.lang.ClassNotFoundException: javax.servlet.ServletRegistration$DynamicThe same exception appears with activiti-explorer.war from activiti-5.16.4\wars folder. I ha

Re: Activiti Explorer 5.16.4 deployment to Weblogic Java 6

jbarrez — Mon, 20 Oct 2014 09:24:51 GMT

version 15.16.4 switched to Spring Java config instead of XML (see https://github.com/Activiti/Activiti/blob/master/modules/activiti-webapp-explorer2/src/main/java/org/activiti/explorer/servlet/WebConfigurer.java)

So it seems like this class is missing on Weblogic Which version of WebLogic is this?

This seems to be consistent though: http://stackoverflow.com/questions/9531853/dynamic-add-servlet-in-weblogic-12c-not-work

So it seems for Weblogic another way of initializing must be used … But i can't find immediately what that option should be (except reverting to XML)

Re: Activiti Explorer 5.16.4 deployment to Weblogic Java 6

ivan_activiti — Mon, 20 Oct 2014 15:34:14 GMT

We are on Weblogic 10.3.6.0.

Re: Activiti Explorer 5.16.4 deployment to Weblogic Java 6

ralferic — Thu, 06 Nov 2014 08:39:51 GMT

I ran into that very same problem. As far as i can see, this is because activity now requires Servlet 3.0. (Please see Stacktrace below) Tomcat 6 is Servlet 2.5 only. The new WebConfigurer-class uses ServletRegistration.Dynamic, which is not available in Servlet-API 2.5. I would have expected this to be clearly documented. Even worse: activity installation guide is referring to Tomcat 6 and requires quite a bit of changes for Tomcat 7. An installtion guide that can not possibly work really does give me second thougths about using activity.

SCHWERWIEGEND: Error configuring application listener of class org.activiti.explorer.servlet.WebConfigurer
java.lang.NoClassDefFoundError: javax/servlet/ServletRegistration$Dynamic
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2539)
at java.lang.Class.getDeclaredMethods(Class.java:1860)
at org.apache.catalina.util.DefaultAnnotationProcessor.processAnnotations(DefaultAnnotationProcessor.java:226)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4153)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4705)
at org.apache.catalina.manager.ManagerServlet.start(ManagerServlet.java:1276)
at org.apache.catalina.manager.HTMLManagerServlet.start(HTMLManagerServlet.java:625)
at org.apache.catalina.manager.HTMLManagerServlet.doGet(HTMLManagerServlet.java:136)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.filters.CsrfPreventionFilter.doFilter(CsrfPreventionFilter.java:193)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:563)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
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:293)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:701)
Caused by: java.lang.ClassNotFoundException: javax.servlet.ServletRegistration$Dynamic
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526)
… 27 more

Re: Activiti Explorer 5.16.4 deployment to Weblogic Java 6

ralferic — Thu, 06 Nov 2014 08:42:29 GMT

Sorry, i referred to Tomcat 6. But as far as i know, Weblogic 10.3.6.0 is also Servlet 2.5.

Re: Activiti Explorer 5.16.4 deployment to Weblogic Java 6

jbarrez — Mon, 10 Nov 2014 10:58:02 GMT

We are aware of it and will update our docs in the 5.17 release. We didn't test it on Websphere (limited team and time, you know the drill) There is nothing wrong with using 5.16.3 at the moment though.

> An installtion guide that can not possibly work really does give me second thougths about using activity.

Ok, it's a free world and your choice. Alternatively, you could also step in and help us out here. We've got a limited amount of people and a limited amount of time and we would welcome for sure any patches that make it run on current websphere servers!

Also: it's Activiti with a i.

Re: Activiti Explorer 5.16.4 deployment to Weblogic Java 6

priya1 — Mon, 12 Jan 2015 20:43:05 GMT

Do you have any plans to make Activiti 5.17 or 5.16.4 backward compatible to suport Servlet 2.5

Re: Activiti Explorer 5.16.4 deployment to Weblogic Java 6

jbarrez — Fri, 16 Jan 2015 15:49:57 GMT

No, currently no plans. Unless somebody provides a patch to make it working on these app servers (while still working on the new ones) ..(servlet 3 is also already from 2009)

Re: Activiti Explorer 5.16.4 deployment to Weblogic Java 6

ndup0nt — Tue, 10 Feb 2015 16:46:02 GMT

I'm thinking about creating such a patch.

From what I see in the source code :
* activiti-explorer (the project) relies on servlet 2.5 API
* the web.xml is also compliant with servlet 2.5
* only a few classes in activiti-webapp-explorer2 actually relies on Servlet 3.0

It looks like the only point is that the DispatcherServlet is programmatically configured (using Servlet 3.0) instead of web.xml. So basically I would only have to change this ? Am I missing something ?

Re: Activiti Explorer 5.16.4 deployment to Weblogic Java 6

jbarrez — Wed, 18 Feb 2015 12:12:00 GMT

That is a correct analysis.

We would for sure welcome such a patch!

Re: Activiti Explorer 5.16.4 deployment to Weblogic Java 6

magini — Mon, 16 Mar 2015 16:37:49 GMT

Hi,
i made a patch for the version 5.16.4 on WebSphere 7, that has the same problem with Servlet Api 3.0.

Activiti Rest:

Get the file "rest-web.txt" from the attachment and copy the content in web.xml file inside the war

REPLACE -> classes\org\activiti\rest\conf\ApplicationConfiguration.class
<java>
package org.activiti.rest.conf;

import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;

@Configuration
@ComponentScan(basePackages = {
        "org.activiti.rest"})
public class ApplicationConfiguration {

}

</java>

I add a simple Spring security filter that you can rewrite, below the class to add in war file:
ADD -> classes\org\activiti\rest\conf\SecurityConfig.class
<java>
package org.activiti.rest.conf;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.stereotype.Component;

@Component(value = "basicFilter")
public class SecurityConfig implements Filter {

    @Override
    public void doFilter(ServletRequest servletRequest,
            ServletResponse servletResponse, FilterChain filterChain)
            throws IOException, ServletException {

     HttpServletRequest req = (HttpServletRequest)servletRequest;
     HttpServletResponse res = (HttpServletResponse)servletResponse;

        /* WRITE HERE YOUR CODE FOR A CUSTOM FILTER */

        filterChain.doFilter(servletRequest, servletResponse);

    }

    @Override
    public void init(FilterConfig paramFilterConfig) throws ServletException {
        // do nothing
    }

    @Override
    public void destroy() {
        // do nothing
    }

}

</java>

Activiti Explorer:

Get the file "explorer-web.txt" from the attachment and copy the content in web.xml file inside the war

REPLACE -> classes\org\activiti\explorer\conf\ApplicationConfiguration.class
<java>
package org.activiti.explorer.conf;

import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.ImportResource;
import org.springframework.context.annotation.PropertySource;
import org.springframework.context.annotation.PropertySources;

@Configuration
@PropertySources({
@PropertySource(value = "classpath:db.properties", ignoreResourceNotFound = true),
@PropertySource(value = "classpath:engine.properties", ignoreResourceNotFound = true)
})
@ComponentScan(basePackages = {
        "org.activiti.explorer.conf","org.activiti.rest"})
@ImportResource({"classpath:activiti-ui-context.xml", "classpath:activiti-login-context.xml"})
public class ApplicationConfiguration {

}

</java>

I hope that's can solve your problem.

Ps. Sorry for my english

Ps. Sorry