Selenium CDI可以'；t注入FirefoxDriver（硒）

我尝试在需要时使用CDI注入firefox（避免总是配置驱动程序）。但我总是得到

NullPointer

我为firefox驱动程序创建了一个生产者

@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();
    }

}

当我想使用它时，我这样称呼它：

@Inject
private FirefoxDriver driver;

就像我想注入的其他物体一样。 但是我总是得到

NullPointer

，当我尝试调试驱动程序时，它总是空的，在producer方法

getDriver（）

中放置一个断点，它甚至没有被调用

在同一个项目中，我已经做了类似的工作，使用

FacesContext

和

NavigationHandler

，它们都工作得很好

ps：我正在运行Wildfly 8，

beans.xml

在我的web-inf上

ps2：我这样做的原因是因为我需要访问另一家公司的网站，并不时下载一些信息，因为他们不提供任何web服务或其他任何东西，只通过web浏览器

ps3：如果我不使用CDI，从制作人那里获取所有代码，并将其放在我称之为的类中，它就可以正常工作。所以我假设硒没有问题

堆栈跟踪器：

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

为了进行测试，我使用以下方法

@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();
        }
    }

}

---

您的问题源于

下载CSR

不是一个bean。它有一个带参数的构造函数，您可以在类

TesteBean

中实例化它。要获得CDI特性，您必须让CDI容器为您实例化bean，并像其他可注入bean一样提供所有需要的信息。换句话说：使用new将为您提供一个非托管实例和一个非对象实例

将业务代码放入构造函数中也是一种不好的做法。构造函数应该只包含初始化代码。在构造期间，还没有注入任何字段，因此即使您的

下载CSR

满足成为bean的要求，您的构造中也会有一个NPE

你能做的就是这样：

@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();
    }
  }

}

使用以下

下载CSR

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");
    }

  }
}

---

你能给出注入FirefoxDriver的bean的部分代码吗。并给出如何调用这个bean的详细用法？@Antoinesbot Durand同时添加了这两种方法。我明白了，如果我将下载的CSR类作为bean，而不将其与JSF一起使用，只是为了维护这些方法并使注入成为可能，这会是一种不好的做法吗？我的目标是安排下载方法每天运行，但我也会有其他方法使用Firefox驱动程序，使用bean是否是一个好的做法？是的。最好不要从前面触发批次。您可以使用JavaBatch，或者使bean成为具有超时的EJB，或者使用Deltaspike调度模块来管理调度。

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");
    }

  }
}