我使用流利的等待，但我不知道爲什麼我得到功能上的錯誤

Question

我想在我的代碼中使用流暢的等待，但我得到Function(Function<Boolean> f = new Function<Boolean>())線錯誤。

FluentWait<WebElement> wait = new FluentWait<WebElement>(verificationtxt); 

wait.withTimeout(600, TimeUnit.SECONDS); 

wait.pollingEvery(5, TimeUnit.SECONDS); 

wait.ignoring(NoSuchElementException.class); 

Function<Boolean> f = new Function<Boolean>() 
     { 
    public Boolean apply(WebElement verificationtxt) 
    { 
     if(verificationtxt.getText().length()>0) 
     { 
      return true; 
     } 
     return false; 
    } 
     }; 
wait.until(f); 

Answer 1

該線路應該是：

Function<WebElement, Boolean> f = new Function<WebElement, Boolean>() 

完整的源代碼：

封裝測試;

import java.util.concurrent.TimeUnit;

import org.openqa.selenium.By; import org.openqa.selenium.NoSuchElementException; import org.openqa.selenium.WebDriver; import org.openqa.selenium.WebElement; import org.openqa.selenium.firefox.FirefoxDriver; import org.openqa.selenium.support.ui.FluentWait;

import com.google.common.base.Function;

公共類FluentWaitTest {

public void fluentWaitDemo() { 
    WebDriver driver = new FirefoxDriver(); 

    WebElement verificationtxt = driver.findElement(By.name("verificationtxt")); 

    FluentWait<WebElement> wait = new FluentWait<WebElement>(verificationtxt); 

    wait.withTimeout(600, TimeUnit.SECONDS); 

    wait.pollingEvery(5, TimeUnit.SECONDS); 

    wait.ignoring(NoSuchElementException.class); 

    Function<WebElement, Boolean> f = new Function<WebElement, Boolean>() { 
     public Boolean apply(WebElement verificationtxt) { 
      if (verificationtxt.getText().length() > 0) { 
       return true; 
      } 
      return false; 
     } 
    }; 
    wait.until(f); 
} 

}