tapestry5.0.13
@Inject
private org.apache.tapestry5.services.Request request;
String param=request.getParameter(PARAM_NAME);
int id=coercer.coerce(param,Integer.class);
log.debug(PARAM_NAME+" is "+param); //it's ok, display a number.
int id=Integer.getInteger(param.toString()); //The error message come from
this link.because when i just set a number to id,it will goes well.
the variable param is actually java.lang.String,right?So where is the error
come from?
Thanks a lot.it drives me nuts.
the following is the debug message:
[DEBUG] 24:40(ConstructorServiceCreator.java:createObject:50)
Invoking constructor
org.apache.tapestry5.internal.services.InternalRequestGlobalsImpl() (at
InternalRequestGlobalsImpl.java:22).
[ERROR] 24:40(DefaultRequestExceptionHandler.java:handleRequestException:45)
Processing of request failed with uncaught exception:
org.apache.tapestry5.runtime.ComponentEventException
org.apache.tapestry5.runtime.ComponentEventException [at
context:AbstractMessage.tml, line 47, column 97]
at
org.apache.tapestry5.internal.structure.ComponentPageElementImpl.triggerContextEvent(ComponentPageElementImpl.java:1042)
at
org.apache.tapestry5.internal.services.AjaxComponentEventRequestHandler.handle(AjaxComponentEventRequestHandler.java:92)
at
$ComponentEventRequestHandler_11b530aa91a.handle($ComponentEventRequestHandler_11b530aa91a.java)
at
org.apache.tapestry5.internal.services.AjaxFilter.handle(AjaxFilter.java:42)
at
$ComponentEventRequestHandler_11b530aa91b.handle($ComponentEventRequestHandler_11b530aa91b.java)
at
org.apache.tapestry5.services.TapestryModule$37.handle(TapestryModule.java:1987)
at
$ComponentEventRequestHandler_11b530aa91b.handle($ComponentEventRequestHandler_11b530aa91b.java)
at
$ComponentEventRequestHandler_11b530aa884.handle($ComponentEventRequestHandler_11b530aa884.java)
at
org.apache.tapestry5.internal.services.ComponentEventDispatcher.dispatch(ComponentEventDispatcher.java:135)
at $Dispatcher_11b530aa887.dispatch($Dispatcher_11b530aa887.java)
at $Dispatcher_11b530aa879.dispatch($Dispatcher_11b530aa879.java)
at
org.apache.tapestry5.services.TapestryModule$12.service(TapestryModule.java:938)
at cn.mcguo.banjia.services.AppModule$1.service(AppModule.java:23)
at $RequestFilter_11b530aa878.service($RequestFilter_11b530aa878.java)
at $RequestHandler_11b530aa87a.service($RequestHandler_11b530aa87a.java)
at
org.apache.tapestry5.internal.services.LocalizationFilter.service(LocalizationFilter.java:42)
at $RequestHandler_11b530aa87a.service($RequestHandler_11b530aa87a.java)
at
org.apache.tapestry5.services.TapestryModule$2.service(TapestryModule.java:586)
at $RequestHandler_11b530aa87a.service($RequestHandler_11b530aa87a.java)
at
org.apache.tapestry5.internal.services.RequestErrorFilter.service(RequestErrorFilter.java:26)
at $RequestHandler_11b530aa87a.service($RequestHandler_11b530aa87a.java)
at
org.apache.tapestry5.internal.services.StaticFilesFilter.service(StaticFilesFilter.java:79)
at $RequestHandler_11b530aa87a.service($RequestHandler_11b530aa87a.java)
at
org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:93)
at
org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:84)
at
org.apache.tapestry5.ioc.internal.util.ConcurrentBarrier.withRead(ConcurrentBarrier.java:75)
at
org.apache.tapestry5.internal.services.CheckForUpdatesFilter.service(CheckForUpdatesFilter.java:106)
at $RequestHandler_11b530aa87a.service($RequestHandler_11b530aa87a.java)
at $RequestHandler_11b530aa871.service($RequestHandler_11b530aa871.java)
at
org.apache.tapestry5.services.TapestryModule$11.service(TapestryModule.java:918)
at
org.apache.tapestry5.internal.services.IgnoredPathsFilter.service(IgnoredPathsFilter.java:62)
at
$HttpServletRequestFilter_11b530aa870.service($HttpServletRequestFilter_11b530aa870.java)
at
$HttpServletRequestHandler_11b530aa872.service($HttpServletRequestHandler_11b530aa872.java)
at
$HttpServletRequestHandler_11b530aa86f.service($HttpServletRequestHandler_11b530aa86f.java)
at org.apache.tapestry5.TapestryFilter.doFilter(TapestryFilter.java:168)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
at
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:722)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:404)
at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
at org.mortbay.jetty.Server.handle(Server.java:320)
at
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
at
org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:842)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:648)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
at
org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
at
org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:450)
Caused by: java.lang.NullPointerException
at cn.mcguo.banjia.components.Star.onSwitch(Star.java:61)
at cn.mcguo.banjia.components.Star.dispatchComponentEvent(Star.java)
at
org.apache.tapestry5.internal.structure.ComponentPageElementImpl.dispatchEvent(ComponentPageElementImpl.java:864)
at
org.apache.tapestry5.internal.structure.ComponentPageElementImpl.triggerContextEvent(ComponentPageElementImpl.java:1025)
... 49 more
[DEBUG] 24:40(RenderQueueImpl.java:run:91)
Executed 35 rendering commands in 0.000 seconds
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