Discussoes de Programacao e Tecnologia

[resolvido] cannot be cast to javax.servlet.Filter

9 respostas
A
andreacerqueira

to tentando acessar a lista de contatos mas parece que o filtro está com problema.

o web.xml tá ssim: 
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
    <filter>
        <filter-name>FiltroConexao</filter-name>
        <filter-class>pack.filtro.FiltroConexao</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>FiltroConexao</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>...
e a página que imprime tá assim: 
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%>

<c:import url="header.jsp" />

<h1>Lista de Contatos</h1>

<!-- cria lista -->
<jsp:useBean id="dao" class="pack.modelo.ContatoDAO" />

<form action="adicionaContato" method="post">
    <!-- for -->
    <c:forEach var="contato" items="${dao.lista}">...
Alura Desenvolvimento Back-End Java Sua Carreira em desenvolvimento back-end Java: dos fundamentos à arquitetura de sistemas...

9 Respostas

F
furutani

Olá
Poderia postar o stack do erro? Facilita a analise.

A
andreacerqueira

claro roberto ;)

segue: 
SEVERE: WebModule[/Listagem]PWC1270: Exception starting filter FiltroConexao
java.lang.InstantiationException
	at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:124)
	at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4685)
	at org.apache.catalina.core.StandardContext.start(StandardContext.java:5377)
	at com.sun.enterprise.web.WebModule.start(WebModule.java:498)
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:917)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:901)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:733)
	at com.sun.enterprise.web.WebContainer.loadWebModule(WebContainer.java:2000)
	at com.sun.enterprise.web.WebContainer.loadWebModule(WebContainer.java:1651)
	at com.sun.enterprise.web.WebApplication.start(WebApplication.java:109)
	at org.glassfish.internal.data.EngineRef.start(EngineRef.java:130)
	at org.glassfish.internal.data.ModuleInfo.start(ModuleInfo.java:269)
	at org.glassfish.internal.data.ApplicationInfo.start(ApplicationInfo.java:294)
	at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:462)
	at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:240)
	at org.glassfish.deployment.admin.DeployCommand.execute(DeployCommand.java:382)
	at com.sun.enterprise.v3.admin.CommandRunnerImpl$1.execute(CommandRunnerImpl.java:355)
	at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:370)
	at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:1064)
	at com.sun.enterprise.v3.admin.CommandRunnerImpl.access$1200(CommandRunnerImpl.java:96)
	at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1244)
	at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1232)
	at com.sun.enterprise.v3.admin.AdminAdapter.doCommand(AdminAdapter.java:459)
	at com.sun.enterprise.v3.admin.AdminAdapter.service(AdminAdapter.java:209)
	at com.sun.grizzly.tcp.http11.GrizzlyAdapter.service(GrizzlyAdapter.java:168)
	at com.sun.enterprise.v3.server.HK2Dispatcher.dispath(HK2Dispatcher.java:117)
	at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:238)
	at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:828)
	at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:725)
	at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1019)
	at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225)
	at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
	at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
	at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
	at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
	at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
	at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
	at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
	at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
	at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
	at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.ClassCastException: pack.filtro.FiltroConexao cannot be cast to javax.servlet.Filter
	at com.sun.enterprise.web.WebContainer.createFilterInstance(WebContainer.java:733)
	at com.sun.enterprise.web.WebModule.createFilterInstance(WebModule.java:1972)
	at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:253)
	at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:120)
	... 40 more

INFO: WEB0671: Loading application [Listagem] at [/Listagem]
INFO: Listagem was successfully deployed in 971 milliseconds.
WARNING: StandardWrapperValve[jsp]: PWC1406: Servlet.service() for servlet jsp threw exception
java.lang.InstantiationException: class pack.modelo.ContatoDAO : java.lang.InstantiationException: pack.modelo.ContatoDAO
	at org.apache.jsp.lista_002dcontatos_jsp._jspService(lista_002dcontatos_jsp.java:81)
	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:111)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:403)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:492)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:378)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
	at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1539)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
	at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
	at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98)
	at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162)
	at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:330)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
	at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:174)
	at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:828)
	at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:725)
	at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1019)
	at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225)
	at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
	at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
	at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
	at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
	at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
	at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
	at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
	at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
	at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
	at java.lang.Thread.run(Thread.java:722)
F
furutani

Olá

O seu classe FiltroConexao implementa Filter?

A
andreacerqueira
sim 
package pack.filtro;

import java.sql.*;
import java.io.IOException;
import java.util.logging.Filter;
import java.util.logging.LogRecord;
import javax.servlet.*;
import pack.jdbc.ConnectionFactory;

public class FiltroConexao implements Filter {...
F
furutani

Ih complicou… você já tentou rodar a aplicação retirando o jar que contem a interface Filter do WEB-INF/lib ?
(Não me lembro no nome do jar para lhe dizer)

A
andreacerqueira

no meu lib só tem isso:
commons-beanutils-1.8.3
commons-collections-3.2.1
commons-lang3-3.1
commons-logging-1.1.1
displaytag-1.2
jstl-1.2
log4j-1.2.12

F
furutani

Que estranho…

infelizmente não sei mais o que pode ser. Tomara que alguém saiba o que é :frowning:

A
andreacerqueira

java é muito burocratico :slight_smile:

U
usphisics 2 likes 
Vc está implementando a interdace errado,

import java.util.logging.Filter;

em vez da,

import javax.servlet.Filter;

Acredito ser isso…

Criado 25 de abril de 2012
Ultima resposta 3 de jun. de 2014
Respostas 9
Participantes 3

Topicos relacionados

Criar String Randomica 15 respostas Fechar circuito de um relé com Java - utilizando porta USB 8 respostas Criar aplicativo para enviar email 8 respostas Duvida com o retorno do getResultList 4 respostas Spring No mapping found for HTTP request with URI 2 respostas
Alura POO: o que é programação orientada a objetos? Aprenda os conceitos básicos da programação orientada a objetos, como classes, objetos, herança, encapsulamento e polimorfismo, com exemplos.
Casa do Codigo Inteligencia Artificial e ChatGPT: Da revolucao dos... Por Fabricio Carraro — Casa do Codigo