how to put try catch to an event method in order to customise the catch java -
i have created method handle uploading of files when using p:fileupload tag of primefaces:
public void handlefileupload(fileuploadevent event) throws ioexception { facescontext.getcurrentinstance() .getexternalcontext() .getsessionmap().put("limage", event.getfile()); } but when testing code exception:
grave: c:\tmp\upload_6d3af437_13dda559a63__8000_00000082.tmp (le fichier spécifié est introuvable) java.io.filenotfoundexception: c:\tmp\upload_6d3af437_13dda559a63__8000_00000082.tmp (le fichier spécifié est introuvable) @ java.io.fileinputstream.open(native method) @ java.io.fileinputstream.<init>(fileinputstream.java:120) @ org.apache.commons.fileupload.disk.diskfileitem.readobject(diskfileitem.java:719) @ sun.reflect.nativemethodaccessorimpl.invoke0(native method) @ sun.reflect.nativemethodaccessorimpl.invoke(nativemethodaccessorimpl.java:39) @ sun.reflect.delegatingmethodaccessorimpl.invoke(delegatingmethodaccessorimpl.java:25) @ java.lang.reflect.method.invoke(method.java:597) @ java.io.objectstreamclass.invokereadobject(objectstreamclass.java:974) @ java.io.objectinputstream.readserialdata(objectinputstream.java:1848) @ java.io.objectinputstream.readordinaryobject(objectinputstream.java:1752) @ java.io.objectinputstream.readobject0(objectinputstream.java:1328) @ java.io.objectinputstream.defaultreadfields(objectinputstream.java:1946) @ java.io.objectinputstream.readserialdata(objectinputstream.java:1870) @ java.io.objectinputstream.readordinaryobject(objectinputstream.java:1752) @ java.io.objectinputstream.readobject0(objectinputstream.java:1328) @ java.io.objectinputstream.defaultreadfields(objectinputstream.java:1946) @ java.io.objectinputstream.readserialdata(objectinputstream.java:1870) @ java.io.objectinputstream.readordinaryobject(objectinputstream.java:1752) @ java.io.objectinputstream.readobject0(objectinputstream.java:1328) @ java.io.objectinputstream.readobject(objectinputstream.java:350) @ java.util.hashmap.readobject(hashmap.java:1030) @ sun.reflect.generatedmethodaccessor105.invoke(unknown source) @ sun.reflect.delegatingmethodaccessorimpl.invoke(delegatingmethodaccessorimpl.java:25) @ java.lang.reflect.method.invoke(method.java:597) @ java.io.objectstreamclass.invokereadobject(objectstreamclass.java:974) @ java.io.objectinputstream.readserialdata(objectinputstream.java:1848) @ java.io.objectinputstream.readordinaryobject(objectinputstream.java:1752) @ java.io.objectinputstream.readobject0(objectinputstream.java:1328) @ java.io.objectinputstream.defaultreadfields(objectinputstream.java:1946) @ java.io.objectinputstream.readserialdata(objectinputstream.java:1870) @ java.io.objectinputstream.readordinaryobject(objectinputstream.java:1752) @ java.io.objectinputstream.readobject0(objectinputstream.java:1328) @ java.io.objectinputstream.readarray(objectinputstream.java:1666) @ java.io.objectinputstream.readobject0(objectinputstream.java:1322) @ java.io.objectinputstream.readobject(objectinputstream.java:350) @ java.util.hashmap.readobject(hashmap.java:1030) @ sun.reflect.generatedmethodaccessor105.invoke(unknown source) @ sun.reflect.delegatingmethodaccessorimpl.invoke(delegatingmethodaccessorimpl.java:25) @ java.lang.reflect.method.invoke(method.java:597) @ java.io.objectstreamclass.invokereadobject(objectstreamclass.java:974) @ java.io.objectinputstream.readserialdata(objectinputstream.java:1848) @ java.io.objectinputstream.readordinaryobject(objectinputstream.java:1752) @ java.io.objectinputstream.readobject0(objectinputstream.java:1328) @ java.io.objectinputstream.readobject(objectinputstream.java:350) @ com.sun.faces.renderkit.clientsidestatehelper.dogetstate(clientsidestatehelper.java:255) @ com.sun.faces.renderkit.clientsidestatehelper.getstate(clientsidestatehelper.java:198) @ com.sun.faces.renderkit.responsestatemanagerimpl.getstate(responsestatemanagerimpl.java:100) @ com.sun.faces.application.view.statemanagementstrategyimpl.restoreview(statemanagementstrategyimpl.java:227) @ com.sun.faces.application.statemanagerimpl.restoreview(statemanagerimpl.java:188) @ com.sun.faces.application.view.viewhandlingstrategy.restoreview(viewhandlingstrategy.java:123) @ com.sun.faces.application.view.faceletviewhandlingstrategy.restoreview(faceletviewhandlingstrategy.java:453) @ com.sun.faces.application.view.multiviewhandler.restoreview(multiviewhandler.java:148) @ com.ocpsoft.pretty.faces.application.prettyviewhandler.restoreview(prettyviewhandler.java:109) @ com.sun.faces.lifecycle.restoreviewphase.execute(restoreviewphase.java:192) @ com.sun.faces.lifecycle.phase.dophase(phase.java:101) @ com.sun.faces.lifecycle.restoreviewphase.dophase(restoreviewphase.java:116) @ com.sun.faces.lifecycle.lifecycleimpl.execute(lifecycleimpl.java:118) @ javax.faces.webapp.facesservlet.service(facesservlet.java:593) @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:305) @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:210) @ org.primefaces.webapp.filter.fileuploadfilter.dofilter(fileuploadfilter.java:79) @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:243) @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:210) @ com.ocpsoft.pretty.prettyfilter.dofilter(prettyfilter.java:126) @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:243) @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:210) @ org.apache.catalina.core.standardwrappervalve.invoke(standardwrappervalve.java:222) @ org.apache.catalina.core.standardcontextvalve.invoke(standardcontextvalve.java:123) @ org.apache.catalina.authenticator.authenticatorbase.invoke(authenticatorbase.java:472) @ org.apache.catalina.core.standardhostvalve.invoke(standardhostvalve.java:171) @ org.apache.catalina.valves.errorreportvalve.invoke(errorreportvalve.java:99) @ org.apache.catalina.valves.accesslogvalve.invoke(accesslogvalve.java:936) @ org.apache.catalina.core.standardenginevalve.invoke(standardenginevalve.java:118) @ org.apache.catalina.connector.coyoteadapter.service(coyoteadapter.java:407) @ org.apache.coyote.http11.abstracthttp11processor.process(abstracthttp11processor.java:1004) @ org.apache.coyote.abstractprotocol$abstractconnectionhandler.process(abstractprotocol.java:589) @ org.apache.tomcat.util.net.jioendpoint$socketprocessor.run(jioendpoint.java:312) @ java.util.concurrent.threadpoolexecutor$worker.runtask(threadpoolexecutor.java:886) @ java.util.concurrent.threadpoolexecutor$worker.run(threadpoolexecutor.java:908) @ java.lang.thread.run(thread.java:662) in order track down exception, wrapped custom logic in try/catch block, handler in catch block should me determine when exception caught. catch not being called:
public void handlefileupload(fileuploadevent event) throws ioexception{ try { facescontext.getcurrentinstance() .getexternalcontext() .getsessionmap().put("limage", event.getfile()); } catch(exception e) { system.out.println("i in catch "); e.printstacktrace(); } } i think problem not in instructions, might occurring before instructions run. here ui code:
<p:fileupload mode="advanced" auto="true" fileuploadlistener="#{articlesmb.handlefileupload}" /> how can fix error? thanks.
the getfile doesn't throw exception. code show puts file session map. exception thrown somewhere else file object used.
as see stacktrace - happens when session tries deserialized between requests. should store file somewhere else, because file deleted framework right after multipart http request completes.
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