转载：selenium的wait.until()

package com.test.elementwait;

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.support.ui.ExpectedCondition;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.WebDriverWait;

public class ExplicitWait {

public static void main(String[] args) {
WebDriver driver = new FirefoxDriver();
driver.get("http://www.baidu.com");
driver.manage().window().maximize();

//标题是不是“百度一下，你就知道”
new WebDriverWait(driver,5).until(ExpectedConditions.titleIs("百度一下，你就知道"));
//标题是不是包含“百度一下”
new WebDriverWait(driver,5).until(ExpectedConditions.titleContains("百度一下"));
//判断该元素是否被加载在DOM中，并不代表该元素一定可见
new WebDriverWait(driver,5).until(ExpectedConditions.presenceOfElementLocated(By.xpath("//*[@id='kw']")));
//判断元素(定位后)是否可见
new WebDriverWait(driver,5).until(ExpectedConditions.visibilityOf(driver.findElement(By.xpath("//*[@id='kw']"))));
//判断元素是否可见（非隐藏，并且元素的宽和高都不等以0）
new WebDriverWait(driver,5).until(ExpectedConditions.visibilityOfElementLocated(By.xpath("//*[@id='kw']")));
//只要存在一个就是true
ExpectedConditions.presenceOfAllElementsLocatedBy(By.xpath("//*[@id='kw']"));
//元素中的text是否包含语气的字符串
ExpectedConditions.textToBePresentInElementLocated(By.xpath("//*[@id='kw']"), "百度一下");
//元素的value属性中是否包含语气的字符串
ExpectedConditions.textToBePresentInElementValue(By.xpath("//*[@id='kw']"), "***");
//判断该表单是否可以切过去，可以就切过去并返回true，否则放回false
ExpectedConditions.frameToBeAvailableAndSwitchToIt(By.id("**"));
//判断某个元素是否不存在于DOM或不可见
ExpectedConditions.invisibilityOfElementLocated(By.xpath("//*[@id='kw']"));
//判断元素是否可以点击
ExpectedConditions.elementToBeClickable(By.xpath("//*[@id='kw']"));
//等到一个元素从DOM中移除
ExpectedConditions.stalenessOf(driver.findElement(By.xpath("//*[@id='kw']")));
//判断某个元素是否被选中，一般用在下拉列表
ExpectedConditions.elementToBeSelected(By.xpath("//*[@id='kw']"));
//判断某个元素的选中状态是否符合预期
ExpectedConditions.elementSelectionStateToBe(By.xpath("//*[@id='kw']"), true);
//判断某个元素(已定位)的选中状态是否符合预期
ExpectedConditions.elementSelectionStateToBe(driver.findElement(By.xpath("//*[@id='kw']")), false);
//判断页面中是否存在alert
new WebDriverWait(driver,5).until(ExpectedConditions.alertIsPresent());
//--------------------自定义判断条件-----------------------------
WebDriverWait wait = new WebDriverWait(driver, 3);
wait.until(new ExpectedCondition<Boolean>() {
public Boolean apply(WebDriver driver) {
return !driver.findElement(By.xpath("//*[@id='kw']")).getAttribute("class").contains("x-form-invalid-field");
}
});

}

}