Selenium用浏览器爬取数据，感觉很cool啊。趁有空赶紧写了一个hello world！

1 下载浏览器

firefox浏览器
chrome浏览器
需要本地安装过firefox或者chrome

2 动手写java

maven pom.xml中引用Selenium

<dependency>
    <groupId>org.seleniumhq.selenium</groupId>
    <artifactId>selenium-java</artifactId>
    <version>4.0.0-alpha-2</version>
</dependency>

<dependency>
    <groupId>org.seleniumhq.selenium</groupId>
    <artifactId>selenium-server-standalone</artifactId>
    <version>2.53.0</version>
</dependency>

写hellowolrd类

 public static void loginYY( String username,String password){
        System.setProperty("webdriver.chrome.driver", "F://wb//chromedriver.exe");
        ChromeOptions options = new ChromeOptions();
        ChromeDriver webDriver = new ChromeDriver(options);
        String url = "http://www.yy.com/98187265/98187265";
        webDriver.get(url); //
        // 与浏览器同步非常重要，必须等待浏览器加载完毕
        webDriver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);
        
        //找到登陆按钮 并点击
        webDriver.findElement(By.xpath("//a[@class='w-head__main__cnt__right__item__tl__t wHead__login__btn']")).click();

        //找到账号密码登陆 并点击
        webDriver.findElement(By.xpath("//a[@id='back2Commonlogin-btn']")).click();
        
        //找到内部iframe
        WebElement iframe = webDriver.findElement(By.className("udbsdk_frm"));
        webDriver.switchTo().frame(iframe);
        
        //设置账号
        webDriver.findElement(By.xpath("//input[@class='placeholder E_acct']")).sendKeys(username);
        webDriver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);
        //设置密码
        webDriver.findElement(By.xpath("//input[@class='placeholder E_passwd']")).sendKeys(password);
        webDriver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);
        List<WebElement> elements= webDriver.findElements(By.xpath("//div[@class='form_item form_opra']/a[@class='m_button_large E_login']"));
        for(WebElement w:elements){
            if(w.getText().equals("登录")){
                //点击登陆按钮
                w.click();
            }
        }
    }

功能完成 试验效果

image.png