Wie rufe ich durch einen Link in meiner JSF-Seite ein Servlet auf.
web.xml:
jsf-seite:
Kann mir sagen wie das geht ??
Fehler:
500 Internal Server Error
java.lang.NullPointerException at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:322) at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:130) at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:87) at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200) at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:117) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:198) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) - Developer Preview 3].server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:61) at oracle.security.jazn.oc4j.JAZNFilter.doFilter(Unknown Source) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) - Developer Preview 3].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:672) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) - Developer Preview 3].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:378) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) - Developer Preview 3].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:869) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) - Developer Preview 3].server.http.HttpRequestHandler.run(HttpRequestHandler.java:288) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) - Developer Preview 3].server.http.HttpRequestHandler.run(HttpRequestHandler.java:120) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) - Developer Preview 3].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:299) at java.lang.Thread.run(Thread.java:534)
mfg manuel
web.xml:
Code:
<?xml version = '1.0' encoding = 'windows-1252'?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee">
<description>Empty web.xml file for Web Application</description>
<servlet>
<servlet-name>Test-Faces Servlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet>
<servlet-name>EbBelegungReport</servlet-name>
<servlet-class>Reports.EbBelegungReport</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Test-Faces Servlet</servlet-name>
<url-pattern>/faces/*</url-pattern>
</servlet-mapping>
</web-app>
jsf-seite:
Code:
<h:outputLink styleClass = "druckenlink" value = "EbBelegunfgReport">
<h:outputText value="Drucken"/>
<f:param name="lfbis" value="#{betrieb.lfbis}"/>
</h:outputLink>
Kann mir sagen wie das geht ??
Fehler:
500 Internal Server Error
java.lang.NullPointerException at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:322) at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:130) at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:87) at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200) at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:117) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:198) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) - Developer Preview 3].server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:61) at oracle.security.jazn.oc4j.JAZNFilter.doFilter(Unknown Source) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) - Developer Preview 3].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:672) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) - Developer Preview 3].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:378) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) - Developer Preview 3].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:869) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) - Developer Preview 3].server.http.HttpRequestHandler.run(HttpRequestHandler.java:288) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) - Developer Preview 3].server.http.HttpRequestHandler.run(HttpRequestHandler.java:120) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.0.0) - Developer Preview 3].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:299) at java.lang.Thread.run(Thread.java:534)
mfg manuel