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What is Request Dispatcher and What is reuest Processor??
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Answer / laxmi
RequestDispatcher(rd) is an interface .Servlet container
creates rd object that receives requests from the client and
sends them to any resource (such as a servlet, HTML file, or
JSP file) on the server.
Request Processor contains the processing logic that the
ActionServlet performs as it receives each servlet request
from the container.
| Is This Answer Correct ? | 3 Yes | 0 No |
RequestDispatcher is an interface
which is used to forward our request to java
enabled Resources like servlet,jsp.. within the server.
it has one limitation i.e we cant forward req to
outside server... that was achieved by using sendreDirect
mechanism ..which forwards request not only within the
server but also outside servers.
RequestProcessor is an predefined class given by structs
framework..
and it is helper class to Structs controller
component i.e ActionServlet by using the method process()..
eventhough it is predefined we can create our
own RequestProcessor class
| Is This Answer Correct ? | 3 Yes | 0 No |
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Hi frnds iam new to struts wen iam running helloworld application using struts iam getting the error as belwo kindly any one can solve it plzz .....thanks in advance......... Nov 18, 2009 9:27:46 PM org.apache.tomcat.util.digester.SetPropertiesRule begin WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:StrutsExample1' did not find a matching property. Nov 18, 2009 9:27:46 PM org.apache.tomcat.util.digester.SetPropertiesRule begin WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:Struts1' did not find a matching property. Nov 18, 2009 9:27:46 PM org.apache.catalina.core.AprLifecycleListener init INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Java\jre6\bin;.;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\sys tem32;C:\WINDOWS;C:/Program Files/Java/jre6/bin/client;C:/Program Files/Java/jre6/bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOW S\System32\Wbem;C:\Program Files\Java\jdk1.5.0_18\bin; Nov 18, 2009 9:27:46 PM org.apache.coyote.http11.Http11Protocol init INFO: Initializing Coyote HTTP/1.1 on http-8081 Nov 18, 2009 9:27:46 PM org.apache.catalina.startup.Catalina load INFO: Initialization processed in 678 ms Nov 18, 2009 9:27:46 PM org.apache.catalina.core.StandardService start INFO: Starting service Catalina Nov 18, 2009 9:27:46 PM org.apache.catalina.core.StandardEngine start INFO: Starting Servlet Engine: Apache Tomcat/6.0.20 Nov 18, 2009 9:27:46 PM org.apache.catalina.core.ApplicationContext log INFO: Marking servlet action as unavailable Nov 18, 2009 9:27:46 PM org.apache.catalina.core.ApplicationContext log SEVERE: Error loading WebappClassLoader delegate: false repositories: /WEB-INF/classes/ ----------> Parent Classloader: org.apache.catalina.loader.StandardClassLoader@ca2dce org.apache.struts.action.ActionServlet java.lang.ClassNotFoundException: org.apache.struts.action.ActionServlet at org.apache.catalina.loader.WebappClassLoader.loadClass(Webap pClassLoader.java:1387) at org.apache.catalina.loader.WebappClassLoader.loadClass(Webap pClassLoader.java:1233) at org.apache.catalina.core.StandardWrapper.loadServlet(Standar dWrapper.java:1095) at org.apache.catalina.core.StandardWrapper.load(StandardWrappe r.java:993) at org.apache.catalina.core.StandardContext.loadOnStartup(Stand ardContext.java:4149) at org.apache.catalina.core.StandardContext.start(StandardConte xt.java:4458) at org.apache.catalina.core.ContainerBase.start(ContainerBase.j ava:1045) at org.apache.catalina.core.StandardHost.start(StandardHost.jav a:722) at org.apache.catalina.core.ContainerBase.start(ContainerBase.j ava:1045) at org.apache.catalina.core.StandardEngine.start(StandardEngine .java:443) at org.apache.catalina.core.StandardService.start(StandardServi ce.java:516) at org.apache.catalina.core.StandardServer.start(StandardServer .java:710) at org.apache.catalina.startup.Catalina.start(Catalina.java:583 ) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:2 88) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:41 3) Nov 18, 2009 9:27:46 PM org.apache.catalina.core.StandardContext loadOnStartup SEVERE: Servlet /Struts1 threw load() exception java.lang.ClassNotFoundException: org.apache.struts.action.ActionServlet at org.apache.catalina.loader.WebappClassLoader.loadClass(Webap pClassLoader.java:1387) at org.apache.catalina.loader.WebappClassLoader.loadClass(Webap pClassLoader.java:1233) at org.apache.catalina.core.StandardWrapper.loadServlet(Standar dWrapper.java:1095) at org.apache.catalina.core.StandardWrapper.load(StandardWrappe r.java:993) at org.apache.catalina.core.StandardContext.loadOnStartup(Stand ardContext.java:4149) at org.apache.catalina.core.StandardContext.start(StandardConte xt.java:4458) at org.apache.catalina.core.ContainerBase.start(ContainerBase.j ava:1045) at org.apache.catalina.core.StandardHost.start(StandardHost.jav a:722) at org.apache.catalina.core.ContainerBase.start(ContainerBase.j ava:1045) at org.apache.catalina.core.StandardEngine.start(StandardEngine .java:443) at org.apache.catalina.core.StandardService.start(StandardServi ce.java:516) at org.apache.catalina.core.StandardServer.start(StandardServer .java:710) at org.apache.catalina.startup.Catalina.start(Catalina.java:583 ) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:2 88) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:41 3) Nov 18, 2009 9:27:46 PM org.apache.coyote.http11.Http11Protocol start INFO: Starting Coyote HTTP/1.1 on http-8081 Nov 18, 2009 9:27:46 PM org.apache.jk.common.ChannelSocket init INFO: JK: ajp13 listening on /0.0.0.0:8009 Nov 18, 2009 9:27:46 PM org.apache.jk.server.JkMain start INFO: Jk running ID=0 time=0/31 config=null Nov 18, 2009 9:27:46 PM org.apache.catalina.startup.Catalina start INFO: Server startup in 616 ms
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