CDI不能注入FirefoxDriver（Selenium）

我想在我需要時使用CDI注入firefox（避免總是配置驅動程序）。但我總是得到NullPointer。CDI不能注入FirefoxDriver（Selenium）

我創建了一個生產用於Firefox的驅動程序

@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(); 
    } 

}

當我想用它，我這樣稱呼它：

@Inject 
private FirefoxDriver driver;

像任何其他對象我想注入。但我一直都想與NullPointer，當我嘗試調試驅動它總是空，通過將生產方法getDriver()它甚至沒有被稱爲中的斷點......

在同一個項目，我已經過做了類似的工作，用FacesContext和NavigationHandler，他們都很好。

ps：我正在運行Wildfly 8，並且beans.xml在我的web-inf上。

ps2：我之所以這樣做是因爲我需要訪問另一家公司網站並隨時下載一些信息，因爲他們不提供任何Web服務或其他任何東西，只能通過網絡瀏覽器。

ps3：如果我不使用CDI並從生產者處獲取所有代碼並將其放在類上，我稱它爲正常工作。所以我假設它不是與硒問題

堆棧追蹤：

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

我Download類，在那裏我有FireFoxDriver注入：

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"); 
     } 

    }

爲了測試我使用以下。

@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(); 
     } 
    } 

}

來源

2015-01-26 prabello

你能給豆注入FirefoxDriver的代碼的一部分。並提供關於如何調用此bean的詳細信息？ – 2015-01-27 18:05:31

@ AntoineSabot-Durand添加了兩個。 – prabello 2015-01-27 18:48:24

你的問題來自於以下事實：不是一個bean。它有一個帶參數的構造函數，你可以在你的類TesteBean中實例化它。要獲得CDI功能，你必須讓CDI容器爲你實例化bean，並提供所有需要的信息作爲其他注入bean。換句話說：使用新的給你一個非託管的未注入的實例。

將業務代碼放入構造函數中也是一種不好的做法。構造函數應該只包含初始化代碼。在構造函數中，沒有任何字段被注入，所以即使你的符合bean的要求，你的構造函數中也會有NPE。

你可以做的是這樣的事情：

@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(); 
    } 
    } 

}

具有以下

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"); 
    } 

    } 
}

來源

2015-01-27 19:47:43

我看到，如果我使DownloadCsr類成爲一個bean，並且不使用JSF來維護這些方法並使注入成爲可能，那麼這將是一種不好的做法嗎？我的目標是安排每天運行的下載方法，但是我也會有其他的方法來使用Firefox驅動程序，使用一個bean是否是一個好習慣？ – prabello 2015-01-27 19:54:53

是的。最好不要從前面觸發批次。您可以使用JavaBatch或使您的bean成爲超時的EJB或使用Deltaspike計劃模塊來管理計劃。 – 2015-01-29 05:15:37

CDI不能注入FirefoxDriver（Selenium）

回答

相關問題