Target Unreachable, identifier ‘UsuarioBean’ resolved to null

FelipeC_Reis · Setembro 28, 2016, 6:59pm

Olá galera… Estou com um problema aqui. Sou meio novo nessa parte de Java…
Criei uma página bem simples sincronizando o Jboss AS 7, Maven e Oracle para fazer o cadastro de um certo usuário.
O problema que ao clicar no botão criado para registrar o usuário, o programa não apresenta nenhum erro, porém não cadastra. Aparece apenas um log no standalone.bat do Jboss (abaixo). Junto estou informando a vocês o POM.xml, WEB.xml, a página principal (Index.xhml), a classe de cadastro (ClientMB.java) e classe do banco de Dados (Database.java)

Jboss:

[javax.enterprise.resource.webcontainer.jsf.lifecycle] (http--127.0.0.1-8088-1) /index.xhtml @15,78 value="#{ClientMB.nome}": Target Unreachable, identifier 'ClientMB' resolved to null: javax.el.PropertyNotFoundException: /index.xhtml @15,78 value="#{ClientMB.nome}": Target Unreachable, identifier 'ClientMB' resolved to null
        at com.sun.faces.facelets.el.TagValueExpression.getType(TagValueExpression.java:100) [jsf-impl-2.1.7-jbossorg-2.jar:]
        at org.primefaces.util.ComponentUtils.getConverter(ComponentUtils.java:126) [primefaces-5.0.jar:5.0]
        at org.primefaces.renderkit.InputRenderer.getConvertedValue(InputRenderer.java:171) [primefaces-5.0.jar:5.0]
        at javax.faces.component.UIInput.getConvertedValue(UIInput.java:1030) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
        at javax.faces.component.UIInput.validate(UIInput.java:960) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
        at javax.faces.component.UIInput.executeValidate(UIInput.java:1233) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
        at javax.faces.component.UIInput.processValidators(UIInput.java:698) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
        at javax.faces.component.UIForm.processValidators(UIForm.java:253) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
        at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1214) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
        at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1214) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
        at javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:1172) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
        at com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:76) [jsf-impl-2.1.7-jbossorg-2.jar:]
        at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) [jsf-impl-2.1.7-jbossorg-2.jar:]
        at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) [jsf-impl-2.1.7-jbossorg-2.jar:]
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329) [jbossweb-7.0.13.Final.jar:]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.13.Final.jar:]
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) [jbossweb-7.0.13.Final.jar:]
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) [jbossweb-7.0.13.Final.jar:]
        at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153) [jboss-as-web-7.1.1.Final.jar:7.1.1.Final]
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155) [jbossweb-7.0.13.Final.jar:]
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [jbossweb-7.0.13.Final.jar:]
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [jbossweb-7.0.13.Final.jar:]
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368) [jbossweb-7.0.13.Final.jar:]
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) [jbossweb-7.0.13.Final.jar:]
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671) [jbossweb-7.0.13.Final.jar:]
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930) [jbossweb-7.0.13.Final.jar:]
        at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_79]

POM.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>br.net.bcfsolutions</groupId>
    <artifactId>ProjetoWeb</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>war</packaging>
    <name>ProjetoWeb</name>
 
    <dependencies>
        <dependency>
            <groupId>com.sun.faces</groupId>
            <artifactId>jsf-api</artifactId>
            <version>2.2.2</version>
            <scope>provided</scope>
        </dependency>
 
        <dependency>
            <groupId>com.sun.faces</groupId>
            <artifactId>jsf-impl</artifactId>
            <version>2.2.2</version>
            <scope>provided</scope>
        </dependency>
 
        <dependency>
            <groupId>org.primefaces</groupId>
            <artifactId>primefaces</artifactId>
            <version>5.0</version>
        </dependency>
 
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>4.0.1.Final</version>
        </dependency>
    </dependencies>
 
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.5.1</version>
                <configuration>
                    <source>1.4</source>
                    <target>1.4</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

WEB.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee" 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_3_0.xsd"
    version="3.0">
    <display-name>ProjetoWeb</display-name>
 
    <servlet>
        <servlet-name>Faces Servlet</servlet-name>
        <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>Faces Servlet</servlet-name>
        <url-pattern>*.jsf</url-pattern>
    </servlet-mapping>
    <welcome-file-list>
        <welcome-file>index.xhtml</welcome-file>
    </welcome-file-list>
    <session-config>
        <session-timeout>30</session-timeout>
    </session-config>
 
</web-app>

Index.xml

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
    xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:f="http://java.sun.com/jsf/core"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:p="http://primefaces.org/ui">
 
<h:head>
    <title>Projeto teste</title>
</h:head>
<f:view>
    <h:body>
        <h1>Cadastro de Usuário</h1>
        <h:form>
            Nome:  <p:inputText id="inputNome" type="text" value="#{clientMB.nome}" />
            <br />
            Email: <p:inputText id="inputEmail" type="text" value="#{clientMB.email}" />
            <br />
            <br />
            <p:commandButton 
                action="#{ClientMB.guardarClient()}"
                value="Criar usuário">
            </p:commandButton>
        </h:form>
    </h:body>
</f:view>
</html>

Database.java

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
 
public class Database {
     
    public static Connection getConnection() throws SQLException {
        return DriverManager.getConnection("jdbc:oracle:thin:@//localhost:1521/xe","ADM","123456");
    }
}

ClientMB.java

import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;
 
import javax.faces.bean.ManagedBean;
 
import br.net.bcfsolutions.utils.Database;
 
@ManagedBean (name="clientMB")
public class ClientMB{
     
    private String nome;
    private String email;
     
    public String getNome() {
        return nome;
    }
 
    public void setNome(String nome) {
        this.nome = nome;
    }
 
    public String getEmail() {
        return email;
    }
 
    public void setEmail(String email) {
        this.email = email;
    }
 
     
    public void guardarClient() throws SQLException{
        Connection conn = Database.getConnection();
        Statement st = conn.createStatement();
         
        boolean resultado = st.execute("insert into usuarios (id, nome, email) "
                                     + "values ((select max(ID) id from USUARIOS)+1,'" + this.getNome() + "','" + this.getEmail() + "')");
        if(resultado == false){
            System.out.println("Usuário inserido com sucesso!!!");
        } else {
            System.out.println("Usuário inválido!!!");
        }
         
        st.close();
        conn.close();
    }
}

nielzinnxd · Setembro 28, 2016, 8:09pm

faltou colocar o
@ManagedBean
@ViewScoped
e implementar o Serializable .
em sua bean.

FelipeC_Reis · Setembro 28, 2016, 8:23pm

Obrigado por responder.

Porém, mesmo assim ainda apresenta problema. Meu MB ficou da seguinte forma:

package br.net.bcfsolutions.mb;

import java.io.Serializable;
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;

import javax.faces.bean.ManagedBean;
import javax.faces.bean.ViewScoped;

import br.net.bcfsolutions.utils.Database;

@ManagedBean (name = "clientMB")
@ViewScoped
public class ClientMB implements Serializable{ //No "ClientMB" apresenta um WARNING: The serializable class ClientMB does not declare a static final serialVersionUID field of type long
	
	private String nome;
	private String email;
	
	public String getNome() {
		return nome;
	}

	public void setNome(String nome) {
		this.nome = nome;
	}

	public String getEmail() {
		return email;
	}

	public void setEmail(String email) {
		this.email = email;
	}

	
	public void guardarClient() throws SQLException{
		Connection conn = Database.getConnection();
		Statement st = conn.createStatement();
		
		boolean resultado = st.execute("insert into usuarios (id, nome, email) "
				                     + "values ((select max(ID) id from USUARIOS)+1,'" + this.getNome() + "','" + this.getEmail() + "')");
		if(resultado == false){
			System.out.println("Usuário inserido com sucesso!!!");
		} else {
			System.out.println("Usuário inválido!!!");
		}
		
		st.close();
		conn.close();
	}

}

FelipeC_Reis · Setembro 29, 2016, 12:00pm

Subindo topico… UP

drsmachado · Setembro 29, 2016, 12:14pm

Você deve ter notado que a exception ocorreu quando esta linha action="#{ClientMB.guardarClient()}" foi interpretada, certo?
Perceba que o teu managed bean é nomeado como clienteMB, com o c minúsculo e a linha referida está invocando um método no bean ClienteMB, com C maiúsculo.
Lembre-se, o Java é case sensitive e isso se aplica à forma como você nomeia seus beans gerenciados.

FelipeC_Reis · Setembro 29, 2016, 12:56pm

drsmachado

Mtooooooo obrigado cara… não acredito que era um negocio tão idiota e eu não consegui ver… Vlw msm…

Apareceu outro erro aqui, mas pelo que vi é algo a ver com o drive do Oracle… rss

WARNING [javax.enterprise.resource.webcontainer.jsf.lifecycle] (http--127.0.0.1-8088-1) #{clientMB.guardarClient()}: java.sql.SQLException: No suitable driver found for jdbc:oracle:thin:@//localhost:1521/xe: javax.faces.FacesException: #{clientMB.guardarClient()}: java.sql.SQLException: No suitable driver found for jdbc:oracle:thin:@//localhost:1521/xe

Target Unreachable, identifier ‘UsuarioBean’ resolved to null

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