彈簧自動裝配Autowired字段爲null上測試幫助器類

結構..彈簧自動裝配Autowired字段爲null上測試幫助器類

src/test/java 
config 
    TestConfiguration.java 
hooks 
    WebDriverHooks.java 
nicebank 
    RunSteps.java 
    OtherSteps.. 
support 
    ATMUserInterface.java 
    KnowsTheDomain.java

@Autowired在nicebank包放置步驟時被正確地注入KnowsTheDomain。但我無法@AutowiredKnowsTheDomain放入Helper類如WebDriverHooks和ATMUserInterface

自動裝配不同的軟件包時未要求配置註解是什麼時候？我正在運行黃瓜亞軍..

從WebDriverHook.java和ATMUserInterface.java，字段private KnowsTheDomain helper;返回null而不是單例實例。我需要他們返回當我運行nicebank包中的步驟時返回的內容。

任何人都知道爲什麼這個helper字段爲空？

TestConfiguration.java

@Configuration 
@ComponentScan(basePackages = { "support"}) 
public class TestConfiguration { 
    @Bean 
    public static KnowsTheDomain knowsTheDomain() { 
     return new KnowsTheDomain(); 
    } 
}

WebDriverHooks.java

@ContextConfiguration(classes = TestConfiguration.class, loader=AnnotationConfigContextLoader.class) 
@Configurable(autowire = Autowire.BY_TYPE) 
public class WebDriverHooks { 
    @Autowired 
    private KnowsTheDomain helper; 

    @After 
    public void finish(Scenario scenario) { 
     try { 
      byte[] screenshot = 
         helper.getWebDriver().getScreenshotAs(OutputType.BYTES); 
      scenario.embed(screenshot, "image/png"); 
     } catch (WebDriverException somePlatformsDontSupportScreenshots) { 
      System.err.println(somePlatformsDontSupportScreenshots.getMessage()); 
     } 
     finally { 
      helper.getWebDriver().close(); 
     } 
    } 
}

RunSteps.java - 這個運行黃瓜亞軍..

@RunWith(Cucumber.class) 
@CucumberOptions(
     plugin = {"pretty", "html:out"}, 
     snippets = SnippetType.CAMELCASE, 
     features = "classpath:cucumber", 
     dryRun = false) 
@ContextConfiguration(classes = TestConfiguration.class) 
public class RunSteps { 

}

KnowsTheDomain.java

@Component 
public class KnowsTheDomain { 
    private Account myAccount; 
    private CashSlot cashSlot; 
    private Teller teller; 
    private EventFiringWebDriver webDriver; 

    public Account getMyAccount() { 
     if (myAccount == null) { 
      myAccount = new Account(); 
     } 
     return myAccount; 
    } 
    public CashSlot getCashSlot() { 
     if (cashSlot == null) { 
      cashSlot = new CashSlot(); 
     } 
     return cashSlot; 
    } 
    public Teller getTeller() { 
     if (teller == null) { 
      teller = new ATMUserInterface(); 
     } 
     return teller; 
    } 
    public EventFiringWebDriver getWebDriver() { 
     if (webDriver == null) { 
      System.setProperty("webdriver.chrome.driver", "src/test/resources/chromedriver_win32/chromedriver.exe"); 
      webDriver = new EventFiringWebDriver(new ChromeDriver()); 
     } 
     return webDriver; 
    } 
}

ATMUserInterface.java

@ContextConfiguration(classes = TestConfiguration.class, loader=AnnotationConfigContextLoader.class) 
@Configurable(autowire = Autowire.BY_TYPE) 
public class ATMUserInterface implements Teller { 
    @Autowired 
    private KnowsTheDomain helper; 

    @Override 
    public void withdrawFrom(Account account, int dollars) { 
     try { 
      helper.getWebDriver().get("http://localhost:" + ServerHooks.PORT); 
      helper.getWebDriver().findElement(By.id("Amount")) 
         .sendKeys(String.valueOf(dollars)); 
      helper.getWebDriver().findElement(By.id("Withdraw")).click(); 
     } catch (Exception e) { 
      System.err.println("err" + e); 
     } 
    } 
}

來源

2017-01-17 Ryan

'@ Configurable'需要充分AOP是工作，這需要一些設置。最好的選擇幾乎總是切換到構造函數注入。 – chrylis

@Autowired將豆子才起作用。

因此，請確保您在哪裏使用@Autowired註釋。

添加鉤包@ComponentScan如下

@ComponentScan（basePackages = { 「支撐」，「鉤」}）

來源

2017-01-17 07:23:57

彈簧自動裝配Autowired字段爲null上測試幫助器類

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