Error Initialize ManagedBean with Spring JSF 2.0 Hibernate Maven -
i working jsf 2.0 , spring, hibernate , i'm having problem initialization of managedbean.
here error:
severe: error rendering view[/cadastrodeprodutoadminsistemas.xhtml] com.sun.faces.mgbean.managedbeancreationexception: não é possível criar instância para·a classe: com.catalogor3e.controller.pesquisasistemasadminbean. @ com.sun.faces.mgbean.beanbuilder.newbeaninstance(beanbuilder.java:193) @ com.sun.faces.mgbean.beanbuilder.build(beanbuilder.java:102) @ com.sun.faces.mgbean.beanmanager.createandpush(beanmanager.java:409) @ com.sun.faces.mgbean.beanmanager.create(beanmanager.java:269) @ com.sun.faces.el.managedbeanelresolver.resolvebean(managedbeanelresolver.java:244) @ com.sun.faces.el.managedbeanelresolver.getvalue(managedbeanelresolver.java:116) @ com.sun.faces.el.demuxcompositeelresolver._getvalue(demuxcompositeelresolver.java:176) @ com.sun.faces.el.demuxcompositeelresolver.getvalue(demuxcompositeelresolver.java:203) @ org.apache.el.parser.astidentifier.getvalue(astidentifier.java:72) @ org.apache.el.parser.astvalue.getvalue(astvalue.java:161) @ org.apache.el.valueexpressionimpl.getvalue(valueexpressionimpl.java:185) @ com.sun.faces.facelets.el.tagvalueexpression.getvalue(tagvalueexpression.java:109) @ javax.faces.component.componentstatehelper.eval(componentstatehelper.java:194) @ javax.faces.component.componentstatehelper.eval(componentstatehelper.java:182) @ javax.faces.component.uidata.getvalue(uidata.java:731) @ org.primefaces.component.datatable.datatable.getvalue(datatable.java:729) @ org.primefaces.component.api.uidata.getdatamodel(uidata.java:575) @ javax.faces.component.uidata.getrowcount(uidata.java:356) @ org.primefaces.component.datatable.datatablerenderer.encodetbody(datatablerenderer.java:579) @ org.primefaces.component.datatable.datatablerenderer.encoderegulartable(datatablerenderer.java:220) @ org.primefaces.component.datatable.datatablerenderer.encodemarkup(datatablerenderer.java:192) @ org.primefaces.component.datatable.datatablerenderer.encodeend(datatablerenderer.java:74) @ javax.faces.component.uicomponentbase.encodeend(uicomponentbase.java:875) @ javax.faces.component.uicomponent.encodeall(uicomponent.java:1764) @ javax.faces.render.renderer.encodechildren(renderer.java:168) @ javax.faces.component.uicomponentbase.encodechildren(uicomponentbase.java:845) @ org.primefaces.renderkit.corerenderer.renderchild(corerenderer.java:55) @ org.primefaces.renderkit.corerenderer.renderchildren(corerenderer.java:43) @ org.primefaces.component.layout.layoutunitrenderer.encodeend(layoutunitrenderer.java:51) @ javax.faces.component.uicomponentbase.encodeend(uicomponentbase.java:875) @ javax.faces.component.uicomponent.encodeall(uicomponent.java:1764) @ javax.faces.component.uicomponent.encodeall(uicomponent.java:1760) @ javax.faces.component.uicomponent.encodeall(uicomponent.java:1760) @ javax.faces.component.uicomponent.encodeall(uicomponent.java:1760) @ com.sun.faces.application.view.faceletviewhandlingstrategy.renderview(faceletviewhandlingstrategy.java:424) @ com.sun.faces.application.view.multiviewhandler.renderview(multiviewhandler.java:125) @ com.sun.faces.lifecycle.renderresponsephase.execute(renderresponsephase.java:121) @ com.sun.faces.lifecycle.phase.dophase(phase.java:101) @ com.sun.faces.lifecycle.lifecycleimpl.render(lifecycleimpl.java:139) @ javax.faces.webapp.facesservlet.service(facesservlet.java:594) @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:305) hibernate: select estado0_.id id3_, estado0_.nome_estado nome2_3_ estado estado0_ @ 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) @ 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.runworker(threadpoolexecutor.java:1110) @ java.util.concurrent.threadpoolexecutor$worker.run(threadpoolexecutor.java:603) @ java.lang.thread.run(thread.java:722) caused by: java.lang.nullpointerexception @ com.catalogor3e.controller.pesquisasistemasadminbean.<init>(pesquisasistemasadminbean.java:51) @ sun.reflect.nativeconstructoraccessorimpl.newinstance0(native method) @ sun.reflect.nativeconstructoraccessorimpl.newinstance(nativeconstructoraccessorimpl.java:57) @ sun.reflect.delegatingconstructoraccessorimpl.newinstance(delegatingconstructoraccessorimpl.java:45) @ java.lang.reflect.constructor.newinstance(constructor.java:525) @ java.lang.class.newinstance0(class.java:372) @ java.lang.class.newinstance(class.java:325) @ com.sun.faces.mgbean.beanbuilder.newbeaninstance(beanbuilder.java:188) ... 58 more here managedbean:
@managedbean(name="pesquisasistemasadminbean") @sessionscoped public class pesquisasistemasadminbean{ @managedproperty(value = "#{filtroetiquetacidadesistemabean}") private filtroetiquetacidadesistemabean filtroetiquetacidadesistemabean; @managedproperty("#{facadeservice}") private facadeservice service; private datamodel<sistema> listasistemas ; //variáveis para filtro private int idcategoriaparafiltro = -1; private list<string> idsdecomponentesparafiltro = new arraylist<string>(); private int idfabricanteparafiltro = -1; public pesquisasistemasadminbean() { this.listasistemas = new listdatamodel<sistema> (this.service.getservicesistemas().filtrarsistemaconstrutivo(null, null, null, null, null)); } //retorna todas categorias(tipos) dos sistemas existentes no banco public list<categoriasistema> getlistadecategorias(){ list<categoriasistema> listadecategorias = this.service.getservicecategoriadesistemas().gettodasascategoriasdesistemas(); return listadecategorias; } public void filtrarsistemaconstrutivo(){ categoriasistema categoriadesistema = null; fabricante fabricante = null; zonabioclimatica zona = null; etiqueta etiqueta = null; list<categoriacamada> listadecategoriasdecomponentes = null; if(this.idcategoriaparafiltro != -1){ categoriadesistema = this.service.getservicecategoriadesistemas().getcategoriapeloid(idcategoriaparafiltro); } if(this.idfabricanteparafiltro != -1){ fabricante = this.service.getservicefabricante().getfabricantepeloid(idcategoriaparafiltro); } if(this.filtroetiquetacidadesistemabean.getzonabioclimaticaparafiltro() != null){ zona = this.filtroetiquetacidadesistemabean.getzonabioclimaticaparafiltro(); } if(this.filtroetiquetacidadesistemabean.getidetiqueta() != -1){ etiqueta = this.service.getservicecidadeestado().getetiquetapeloid(this.filtroetiquetacidadesistemabean.getidetiqueta()); } if(!this.idsdecomponentesparafiltro.isempty()){ listadecategoriasdecomponentes = new arraylist<categoriacamada>(); for(int = 0; < idsdecomponentesparafiltro.size(); i++){ categoriacamada categoriacamada = this.service.getservicecategoriadecomponentesconstrutivos().getcategoriacomponenteconstrutivopeloid(integer.parseint(idsdecomponentesparafiltro.get(i))); listadecategoriasdecomponentes.add(categoriacamada); } } this.listasistemas = new listdatamodel<sistema> (this.service.getservicesistemas().filtrarsistemaconstrutivo(categoriadesistema, listadecategoriasdecomponentes, fabricante, zona, etiqueta)); } //retorna todos os fabricantes existentes no banco public list<fabricante> getlistafabricantes(){ list<fabricante> listadefabricantes = this.service.getservicefabricante().listadetodososfabricantes(); return listadefabricantes; } ///gets e sets está implementado, mas economizei código aqui!!! here 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>com.mycompany</groupid> <artifactid>catalogo</artifactid> <version>1.0-snapshot</version> <packaging>war</packaging> <name>catalogo</name> <properties> <endorsed.dir>${project.build.directory}/endorsed</endorsed.dir> <project.build.sourceencoding>utf-8</project.build.sourceencoding> </properties> <dependencies> <dependency> <groupid>com.sun.faces</groupid> <artifactid>jsf-api</artifactid> <version>2.1.6</version> </dependency> <dependency> <groupid>com.sun.faces</groupid> <artifactid>jsf-impl</artifactid> <version>2.1.10</version> </dependency> <dependency> <groupid>javax.servlet</groupid> <artifactid>jstl</artifactid> <version>1.2</version> </dependency> <dependency> <groupid>javax.persistence</groupid> <artifactid>persistence-api</artifactid> <version>1.0</version> </dependency> <dependency> <groupid>org.springframework</groupid> <artifactid>spring-test</artifactid> <version>3.2.2.release</version> </dependency> <dependency> <groupid>org.springframework</groupid> <artifactid>spring-core</artifactid> <version>3.1.2.release</version> </dependency> <dependency> <groupid>org.springframework</groupid> <artifactid>spring-expression</artifactid> <version>3.1.2.release</version> </dependency> <dependency> <groupid>org.springframework</groupid> <artifactid>spring-beans</artifactid> <version>3.1.2.release</version> </dependency> <dependency> <groupid>org.springframework</groupid> <artifactid>spring-aop</artifactid> <version>3.1.2.release</version> </dependency> <dependency> <groupid>org.springframework</groupid> <artifactid>spring-context</artifactid> <version>3.1.2.release</version> </dependency> <dependency> <groupid>org.springframework</groupid> <artifactid>spring-context-support</artifactid> <version>3.1.2.release</version> </dependency> <dependency> <groupid>org.springframework</groupid> <artifactid>spring-tx</artifactid> <version>3.1.2.release</version> </dependency> <dependency> <groupid>org.springframework</groupid> <artifactid>spring-jdbc</artifactid> <version>3.1.2.release</version> </dependency> <dependency> <groupid>org.springframework</groupid> <artifactid>spring-orm</artifactid> <version>3.1.2.release</version> </dependency> <dependency> <groupid>org.springframework</groupid> <artifactid>spring-web</artifactid> <version>3.1.2.release</version> </dependency> <dependency> <groupid>org.hibernate</groupid> <artifactid>hibernate</artifactid> <version>3.2.6.ga</version> <type>jar</type> </dependency> <dependency> <groupid>org.hibernate</groupid> <artifactid>hibernate-annotations</artifactid> <version>3.3.1.ga</version> <type>jar</type> </dependency> <dependency> <groupid>org.hibernate</groupid> <artifactid>hibernate-entitymanager</artifactid> <version>3.3.2.ga</version> <type>jar</type> </dependency> <dependency> <groupid>mysql</groupid> <artifactid>mysql-connector-java</artifactid> <version>5.1.15</version> </dependency> <dependency> <groupid>org.slf4j</groupid> <artifactid>slf4j-api</artifactid> <version>1.6.1</version> </dependency> <dependency> <groupid>org.slf4j</groupid> <artifactid>slf4j-simple</artifactid> <version>1.6.1</version> </dependency> <dependency> <groupid>commons-collections</groupid> <artifactid>commons-collections</artifactid> <version>3.1</version> </dependency> <dependency> <groupid>junit</groupid> <artifactid>junit</artifactid> <version>4.10</version> <scope>test</scope> </dependency> <dependency> <groupid>org.hibernate</groupid> <artifactid>ejb3-persistence</artifactid> <version>1.0.1.ga</version> </dependency> <dependency> <groupid>javax.sql</groupid> <artifactid>jdbc-stdext</artifactid> <version>2.0</version> </dependency> <dependency> <groupid>javax.transaction</groupid> <artifactid>jta</artifactid> <version>1.0.1b</version> </dependency> <dependency> <groupid>org.primefaces</groupid> <artifactid>primefaces</artifactid> <version>3.4.1</version> </dependency> <dependency> <groupid>org.primefaces.themes</groupid> <artifactid>all-themes</artifactid> <version>1.0.9</version> </dependency> <dependency> <groupid>commons-fileupload</groupid> <artifactid>commons-fileupload</artifactid> <version>1.2.3-snapshot</version> </dependency> <dependency> <groupid>commons-io</groupid> <artifactid>commons-io</artifactid> <version>2.5-snapshot</version> </dependency> <dependency> <groupid>rome</groupid> <artifactid>rome</artifactid> <version>1.0</version> </dependency> <dependency> <groupid>org.apache.poi</groupid> <artifactid>poi</artifactid> <version>3.7</version> </dependency> <dependency> <groupid>com.lowagie</groupid> <artifactid>itext</artifactid> <version>2.0.7</version> </dependency> <dependency> <groupid>javax</groupid> <artifactid>javaee-api</artifactid> <version>6.0</version> <type>jar</type> </dependency> <dependency> <groupid>javax</groupid> <artifactid>javaee-web-api</artifactid> <version>6.0</version> <type>jar</type> </dependency> </dependencies> <build> <plugins> <plugin> <groupid>org.apache.maven.plugins</groupid> <artifactid>maven-compiler-plugin</artifactid> <version>2.3.2</version> <configuration> <source>1.6</source> <target>1.6</target> <compilerarguments> <endorseddirs>${endorsed.dir}</endorseddirs> </compilerarguments> </configuration> </plugin> <plugin> <groupid>org.apache.maven.plugins</groupid> <artifactid>maven-war-plugin</artifactid> <version>2.1.1</version> <configuration> <failonmissingwebxml>false</failonmissingwebxml> </configuration> </plugin> <plugin> <groupid>org.apache.maven.plugins</groupid> <artifactid>maven-dependency-plugin</artifactid> <version>2.1</version> <executions> <execution> <phase>validate</phase> <goals> <goal>copy</goal> </goals> <configuration> <outputdirectory>${endorsed.dir}</outputdirectory> <silent>true</silent> <artifactitems> <artifactitem> <groupid>javax</groupid> <artifactid>javaee-endorsed-api</artifactid> <version>6.0</version> <type>jar</type> </artifactitem> </artifactitems> </configuration> </execution> </executions> </plugin> </plugins> </build> <repositories> <repository> <url>http://download.java.net/maven/2/</url> <id>jsf20</id> <layout>default</layout> <name>repository library library[jsf20]</name> </repository> <repository> <url>http://repo1.maven.org/maven2/</url> <id>jstl11</id> <layout>default</layout> <name>repository library library[jstl11]</name> </repository> <repository> <id>prime-repo</id> <name>primefaces maven repository</name> <url>http://repository.primefaces.org</url> <layout>default</layout> </repository> <repository> <releases> <enabled>false</enabled> </releases> <snapshots> <enabled>true</enabled> </snapshots> <id>apache.snapshots</id> <name>apache snapshot repository</name> <url>https://repository.apache.org/content/repositories/snapshots</url> </repository> </repositories> here web.xml
<?xml version="1.0" encoding="utf-8"?> <web-app version="3.0" 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"> <context-param> <param-name>javax.faces.project_stage</param-name> <param-value>development</param-value> </context-param> <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>/faces/*</url-pattern> </servlet-mapping> <session-config> <session-timeout> 30 </session-timeout> </session-config> <welcome-file-list> <welcome-file>faces/index.xhtml</welcome-file> </welcome-file-list> <context-param> <param-name>primefaces.theme</param-name> <param-value>bootstrap</param-value> </context-param> <filter-mapping> <filter-name>primefaces fileupload filter</filter-name> <servlet-name>faces servlet</servlet-name> </filter-mapping> <filter> <filter-name>primefaces fileupload filter</filter-name> <filter-class>org.primefaces.webapp.filter.fileuploadfilter</filter-class> </filter> <context-param> <param-name>contextconfiglocation</param-name> <param-value>/web-inf/applicationcontext.xml</param-value> </context-param> <listener> <listener-class> org.springframework.web.context.request.requestcontextlistener </listener-class> </listener> <listener> <listener-class> org.springframework.web.context.contextloaderlistener </listener-class> </listener> </web-app> here applicationcontext.xml
<?xml version="1.0" encoding="utf-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemalocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd"> <!-- seta anotaçoes para serem <context:annotation-config />usadas pelo spring --> <context:annotation-config /> <!-- define o pacote onde o spring vai procurar por beans anotados --> <context:component-scan base-package="com.catalogor3e.dao, com.catalogor3e.service" /> <!-- define que transaçoes irao ser anotadas --> <tx:annotation-driven /> <bean id="datasource" class="org.springframework.jdbc.datasource.drivermanagerdatasource"> <property name="driverclassname" value="com.mysql.jdbc.driver"/> <property name="url" value="jdbc:mysql://localhost:3306/bancodedados"/> <property name="username" value="root"/> <property name="password" value="852456"/> </bean> < bean id="entitymanagerfactory" class="org.springframework.orm.jpa.localcontainerentitymanagerfactorybean"> <property name="persistenceunitname" value="catalogopu" /> <property name="datasource" ref="datasource" /> <property name="jpavendoradapter"> <bean class="org.springframework.orm.jpa.vendor.hibernatejpavendoradapter"> <property name="databaseplatform" value="org.hibernate.dialect.mysqldialect" /> <property name="showsql" value="true" /> </bean> </property> </bean> <!-- configuracao gerente de transacoes spring --> <bean id="transactionmanager" class="org.springframework.orm.jpa.jpatransactionmanager"> <property name="entitymanagerfactory" ref="entitymanagerfactory" /> </bean> </beans> please, can me this, please?
att,
diego sabino
here's root cause of exception, it's bottommost part. that's of relevance:
caused by: java.lang.nullpointerexception @ com.catalogor3e.controller.pesquisasistemasadminbean.<init>(pesquisasistemasadminbean.java:51) so, null inside bean's constructor while code attempting access/invoke it. let's @ constructor:
public pesquisasistemasadminbean() { this.listasistemas = new listdatamodel<sistema> (this.service.getservicesistemas().filtrarsistemaconstrutivo(null, null, null, null, null)); } hey, you're trying access service declared managed property. seem expecting managed property injection works follows:
pesquisasistemasadminbean pesquisasistemasadminbean; // declare bean. pesquisasistemasadminbean.setservice(facadeservice); // set service. pesquisasistemasadminbean = new pesquisasistemasadminbean(); // invoke constructor. but impossible. technically not possible set service instance variable before instance ever constructed. actually, following happens:
pesquisasistemasadminbean pesquisasistemasadminbean; // declare bean. pesquisasistemasadminbean = new pesquisasistemasadminbean(); // invoke constructor. pesquisasistemasadminbean.setservice(facadeservice); // set service. that explains why service still null inside constructor. if intend perform business logic based on injected dependencies directly after bean's construction, should using @postconstruct annotated method.
so, need replace constructor
public pesquisasistemasadminbean() { this.listasistemas = new listdatamodel<sistema> (this.service.getservicesistemas().filtrarsistemaconstrutivo(null, null, null, null, null)); } by @postconstruct method
@postconstruct public void init() { this.listasistemas = new listdatamodel<sistema> (this.service.getservicesistemas().filtrarsistemaconstrutivo(null, null, null, null, null)); } the method name choice, way.
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