CDI Can't inject FirefoxDriver (Selenium) - selenium

Question

I'm trying to use CDI to inject firefox when i need it (Avoiding to always configure the driver). But i'm always getting NullPointer.
I created a producer for the firefox driver
#ApplicationScoped
public class FirefoxDriverProducer {
#Produces #RequestScoped
public FirefoxDriver getDriver() {
// Inicia o Firefox pelo Selenium
String caminhoFirefox = "/usr/bin/firefox";
String profileFirefox = "Selenium";
// Aponta o caminho para o firefox
File pathToBinary = new File(caminhoFirefox);
FirefoxBinary ffBinary = new FirefoxBinary(pathToBinary);
// Profile que precisa ser criado no firefox
ProfilesIni profile = new ProfilesIni();
FirefoxProfile myprofile = profile.getProfile(profileFirefox);
// Proxy
String PROXY = "companyproxy:8080";
org.openqa.selenium.Proxy proxy = new org.openqa.selenium.Proxy();
proxy.setHttpProxy(PROXY).setFtpProxy(PROXY).setSslProxy(PROXY);
DesiredCapabilities cap = new DesiredCapabilities();
cap.setCapability(CapabilityType.PROXY, proxy);
FirefoxDriver driver = new FirefoxDriver(ffBinary, myprofile, cap);
return driver;
}
public void close(#Disposes FirefoxDriver driver) {
driver.quit();
}
}
And when i want to use it i call it like this:
#Inject
private FirefoxDriver driver;
Like any other object i would like to inject.
But i'm always getting NullPointer, when i try to debug the driver it is always null, by placing a breakpoint inside the producer method getDriver() it's not even being called...
On the same project i've already done something similar, with FacesContext and NavigationHandler, they both worked fine.
ps: I'm running Wildfly 8, and beans.xml is on my web-inf.
ps2: The reason why i'm doing this is because i need to access another company site and download some information from time to time, since they don't provide no web service or anything else, only through web browser.
ps3: If i don't use CDI and take all the code from the producer and put it on the class i'm calling it works fine. So i'm assuming that it's not a problem with Selenium
The stack tracer:
16:48:29,632 WARNING [javax.enterprise.resource.webcontainer.jsf.lifecycle] (default task-43) #{testeBean.teste()}: java.lang.NullPointerException: javax.faces.FacesException: #{testeBean.teste()}: java.lang.NullPointerException
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:118) [jsf-impl-2.2.8-jbossorg-1.jar:]
at javax.faces.component.UICommand.broadcast(UICommand.java:315) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8]
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:790) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8]
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1282) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8]
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81) [jsf-impl-2.2.8-jbossorg-1.jar:]
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) [jsf-impl-2.2.8-jbossorg-1.jar:]
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198) [jsf-impl-2.2.8-jbossorg-1.jar:]
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:646) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8]
at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:61) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:56) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:45) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:63) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:58) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:70) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
at io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:76) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:261) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:247) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:76) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:166) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
at io.undertow.server.Connectors.executeRootHandler(Connectors.java:197) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:759) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [rt.jar:1.8.0_25]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [rt.jar:1.8.0_25]
at java.lang.Thread.run(Thread.java:745) [rt.jar:1.8.0_25]
Caused by: javax.faces.el.EvaluationException: java.lang.NullPointerException
at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:101) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8]
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102) [jsf-impl-2.2.8-jbossorg-1.jar:]
... 33 more
Caused by: java.lang.NullPointerException
at br.com.timbrasil.bluemonster.csr.DownloadCsr.<init>(DownloadCsr.java:49) [classes:]
at br.com.timbrasil.bluemonster.csr.TesteBean.teste(TesteBean.java:24) [classes:]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.8.0_25]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) [rt.jar:1.8.0_25]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_25]
at java.lang.reflect.Method.invoke(Method.java:483) [rt.jar:1.8.0_25]
at javax.el.ELUtil.invokeMethod(ELUtil.java:308) [jboss-el-api_3.0_spec-1.0.3.Final.jar:1.0.3.Final]
at javax.el.BeanELResolver.invoke(BeanELResolver.java:537) [jboss-el-api_3.0_spec-1.0.3.Final.jar:1.0.3.Final]
at javax.el.CompositeELResolver.invoke(CompositeELResolver.java:256) [jboss-el-api_3.0_spec-1.0.3.Final.jar:1.0.3.Final]
at com.sun.el.parser.AstValue.invoke(AstValue.java:286) [javax.el-3.0.1-b05.jar:]
at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:304) [javax.el-3.0.1-b05.jar:]
at org.jboss.weld.util.el.ForwardingMethodExpression.invoke(ForwardingMethodExpression.java:40) [weld-core-impl-2.2.6.Final.jar:2014-10-03 10:05]
at org.jboss.weld.el.WeldMethodExpression.invoke(WeldMethodExpression.java:50) [weld-core-impl-2.2.6.Final.jar:2014-10-03 10:05]
at org.jboss.weld.util.el.ForwardingMethodExpression.invoke(ForwardingMethodExpression.java:40) [weld-core-impl-2.2.6.Final.jar:2014-10-03 10:05]
at org.jboss.weld.el.WeldMethodExpression.invoke(WeldMethodExpression.java:50) [weld-core-impl-2.2.6.Final.jar:2014-10-03 10:05]
at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105) [jsf-impl-2.2.8-jbossorg-1.jar:]
at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:87) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8]
... 34 more
16:48:29,642 SEVERE [javax.enterprise.resource.webcontainer.jsf.context] (default task-43) javax.faces.el.EvaluationException: java.lang.NullPointerException
at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:101)
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
at javax.faces.component.UICommand.broadcast(UICommand.java:315)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:790)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1282)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:646)
at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85)
at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:61)
at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131)
at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:56)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:45)
at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:63)
at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:58)
at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:70)
at io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:76)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:261)
at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:247)
at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:76)
at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:166)
at io.undertow.server.Connectors.executeRootHandler(Connectors.java:197)
at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:759)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
at br.com.timbrasil.bluemonster.csr.DownloadCsr.<init>(DownloadCsr.java:49)
at br.com.timbrasil.bluemonster.csr.TesteBean.teste(TesteBean.java:24)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at javax.el.ELUtil.invokeMethod(ELUtil.java:308)
at javax.el.BeanELResolver.invoke(BeanELResolver.java:537)
at javax.el.CompositeELResolver.invoke(CompositeELResolver.java:256)
at com.sun.el.parser.AstValue.invoke(AstValue.java:286)
at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:304)
at org.jboss.weld.util.el.ForwardingMethodExpression.invoke(ForwardingMethodExpression.java:40)
at org.jboss.weld.el.WeldMethodExpression.invoke(WeldMethodExpression.java:50)
at org.jboss.weld.util.el.ForwardingMethodExpression.invoke(ForwardingMethodExpression.java:40)
at org.jboss.weld.el.WeldMethodExpression.invoke(WeldMethodExpression.java:50)
at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:87)
... 34 more
#Edit
My Download class, where i have the FireFoxDriver injected:
public class DownloadCsr {
#Inject
private FirefoxDriver driver;
public DownloadCsr(String usuario, String senha, LocalDateTime dataInicial,
LocalDateTime dataFinal) throws LoginException {
driver.get("https://companysite.net");
// Encontra o elemento para inserir o usuario
WebElement webUsuario = getElementByLocator(By.name("USER"), driver);
// Insere o usuario
webUsuario.sendKeys(usuario);
// Encontra o elemento para inserir a senha
WebElement webSenha = getElementByLocator(By.name("PASSWORD"), driver);
// Insere a senha
webSenha.sendKeys(senha);
// Acha o bot�o de login e clica
WebElement button = getElementByLocator(By.name("IMAGE1"), driver);
button.click();
// Confere se logou na pagina verificando o titulo dela, do contrario
// lança a exceção
if (!driver.getTitle().equals("Business Home")) {
throw new LoginException("Can't reach the loged-in page");
}
}
For testing i'm using the following.
#Named
#RequestScoped
public class TesteBean implements Serializable {
public void teste() {
LocalDateTime dataInicial = LocalDateTime.now().minusDays(1);
LocalDateTime dataFinal = LocalDateTime.now();
try {
new DownloadCsr("login", "password",
dataInicial, dataFinal);
} catch (LoginException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

Answer 1

Your problem comes from the fact that DownloadCsr is not a bean. It has a constructor with parameters and you instantiate it in your class TesteBean. To get the CDI feature you have to let the CDI container instantiate the beans for you and provide all needed information as other injectable bean. In other word : using new give you an unmanaged an uninjected instance.
It's also a bad practice to put business code in a constructor. Constructor should contains only initialisation code. During constructor none of the field are injected yet so even if your DownloadCsr met requirement to be bean you would have a NPE in your constructor.
What you could do is something like that:
#Named
#RequestScoped
public class TesteBean implements Serializable {
#Inject
private DownloadCsr dcsr;
public void teste() {
LocalDateTime dataInicial = LocalDateTime.now().minusDays(1);
LocalDateTime dataFinal = LocalDateTime.now();
try {
dcsr.crawl("login","password", dataInicial, dataFinal);
} catch (LoginException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
with the following DownloadCsr
public class DownloadCsr {
#Inject
private FirefoxDriver driver;
public void crawl(String usuario, String senha, LocalDateTime dataInicial,
LocalDateTime dataFinal) throws LoginException {
driver.get("https://companysite.net");
// Encontra o elemento para inserir o usuario
WebElement webUsuario = getElementByLocator(By.name("USER"), driver);
// Insere o usuario
webUsuario.sendKeys(usuario);
// Encontra o elemento para inserir a senha
WebElement webSenha = getElementByLocator(By.name("PASSWORD"), driver);
// Insere a senha
webSenha.sendKeys(senha);
// Acha o boto de login e clica
WebElement button = getElementByLocator(By.name("IMAGE1"), driver);
button.click();
// Confere se logou na pagina verificando o titulo dela, do contrario
// lança a exceção
if (!driver.getTitle().equals("Business Home")) {
throw new LoginException("Can't reach the loged-in page");
}
}
}