[jboss-user] [JBoss jBPM] - Filter error after setting character encoding in LogFilter.j

[frank101]

I was trying to set the request character encoding to utf-8, but got an error after the change.  The change was in doFilter() in LogFilter.java.  Here is the code that does that:

  public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
   HttpServletRequest request = (HttpServletRequest) servletRequest;

    // ADDED THESE 2 LINES
    request.setCharacterEncoding("UTF-8");
    filterChain.doFilter(servletRequest, servletResponse);    
    
    log.debug("request "+request.getRequestURL());
    
    Enumeration enumeration = request.getParameterNames();
    while (enumeration.hasMoreElements()) {
      String paramName = (String) enumeration.nextElement();
      log.debug("request parameter ["+paramName+"]="+request.getParameter(paramName));
    }

    HttpSession session = request.getSession();
    enumeration = session.getAttributeNames();
    while (enumeration.hasMoreElements()) {
      String attributeName = (String) enumeration.nextElement();
      log.debug("session parameter ["+attributeName+"]="+session.getAttribute(attributeName));
    }

    filterChain.doFilter(servletRequest, servletResponse);
  }



Here is the error trace:

21:12:34,980 DEBUG [LogFilter] request parameter [login:username]=cookie monster

21:12:34,980 DEBUG [LogFilter] request parameter [login_SUBMIT]=1
21:12:34,980 DEBUG [LogFilter] request parameter [login:_link_hidden_]=
21:12:34,980 DEBUG [LogFilter] request parameter [login:_id2]=Log In
21:12:34,990 DEBUG [LogFilter] session parameter [org.apache.myfaces.application
.jsp.JspStateManagerImpl.SERIALIZED_VIEW-/login.jsp]=[Ljava.lang.Object;@132cb29

21:12:34,990 DEBUG [LogFilter] session parameter [javax.faces.request.charset]=I
SO-8859-1
21:12:34,990 DEBUG [LogFilter] session parameter [userBean]=org.jbpm.webapp.bean
.UserBean at 12f2b32
21:12:35,000 ERROR [[FacesServlet]] Servlet.service() for servlet FacesServlet t
hrew exception
javax.faces.el.EvaluationException: Cannot get value for expression '#{userBean.
userSelectItems}'
        at org.apache.myfaces.el.ValueBindingImpl.getValue(ValueBindingImpl.java
:399)
        at javax.faces.component.UISelectItems.getValue(UISelectItems.java:55)
        at javax.faces.component._SelectItemsIterator.hasNext(_SelectItemsIterat
or.java:92)
        at javax.faces.component._SelectItemsUtil.matchValue(_SelectItemsUtil.ja
va:46)
        at javax.faces.component.UISelectOne.validateValue(UISelectOne.java:52)
        at javax.faces.component.UIInput.validate(UIInput.java:269)
        at javax.faces.component.UIInput.processValidators(UIInput.java:144)
        at javax.faces.component.UIForm.processValidators(UIForm.java:68)
        at javax.faces.component.UIComponentBase.processValidators(UIComponentBa
se.java:417)
        at javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:14
2)
        at org.apache.myfaces.lifecycle.LifecycleImpl.processValidations(Lifecyc
leImpl.java:208)
        at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java
:76)
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:94)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:252)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:173)
        at org.jbpm.webapp.filter.LogFilter.doFilter(LogFilter.java:62)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:202)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:173)
        at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFi
lter.java:81)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:202)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:173)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV
alve.java:213)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV
alve.java:178)
        at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrinc
ipalValve.java:39)
        at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(Securit
yAssociationValve.java:159)
        at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValv
e.java:59)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j
ava:126)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j
ava:105)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal
ve.java:107)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.jav
a:148)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java
:856)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.proce
ssConnection(Http11Protocol.java:744)
        at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpo
int.java:527)
        at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWor
kerThread.java:112)
        at java.lang.Thread.run(Thread.java:595)
Caused by: javax.faces.el.EvaluationException: org.jbpm.webapp.bean.UserBean
        at org.apache.myfaces.el.PropertyResolverImpl.getValue(PropertyResolverI
mpl.java:78)
        at org.apache.myfaces.el.ELParserHelper$MyPropertySuffix.evaluate(ELPars
erHelper.java:532)
        at org.apache.commons.el.ComplexValue.evaluate(ComplexValue.java:145)
        at org.apache.myfaces.el.ValueBindingImpl.getValue(ValueBindingImpl.java
:380)
        ... 34 more
Caused by: javax.faces.el.EvaluationException: Bean: org.jbpm.webapp.bean.UserBe
an, property: userSelectItems
        at org.apache.myfaces.el.PropertyResolverImpl.getProperty(PropertyResolv
erImpl.java:404)
        at org.apache.myfaces.el.PropertyResolverImpl.getValue(PropertyResolverI
mpl.java:71)
        ... 37 more
Caused by: java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at org.apache.myfaces.el.PropertyResolverImpl.getProperty(PropertyResolv
erImpl.java:400)
        ... 38 more
Caused by: java.lang.NullPointerException
        at org.jbpm.webapp.bean.UserBean.getUsers(UserBean.java:53)
        at org.jbpm.webapp.bean.UserBean.getUserSelectItems(UserBean.java:61)
        ... 43 more
21:12:36,873 DEBUG [JbpmContextInfo] creating jbpm context with service factorie
s '[message, scheduler, logging, persistence, authentication]'
21:12:36,873 DEBUG [JbpmContext] creating JbpmContext
21:12:36,873 DEBUG [DbPersistenceServiceFactory] creating persistence service
21:12:36,873 DEBUG [DbPersistenceService] creating hibernate session

Thanks!

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