【java爬虫】使用selenium获取某宝联盟淘口令

上一篇文章我们已经介绍过使用selenium获取优惠券基本信息的方法

(15条消息) 【java爬虫】使用selenium爬取优惠券_haohulala的博客-CSDN博客

本文将在上一篇文章的基础上更进一步,获取每个优惠券的淘口令,毕竟我们只有复制淘口令才能在APP里面获取优惠券嘛

获取淘口令的方法也是非常简单,对于首页的每一张优惠券卡片,都需要点击进入详细信息页面,然后获取淘口令

程序运行起来后的效果如下图所示

先来看一下我们要收集的信息

java 复制代码
@Data
@AllArgsConstructor
@NoArgsConstructor
public class GoodItem {

    // 优惠券标题
    private String title;
    // 图片url
    private String imgUrl;
    // 券前价格
    private Double prePrice;
    // 券后价格
    private Double postPrice;
    // 佣金率
    private Double commissionRate;
    // 佣金
    private Double commission;
    // 口令
    private String recommend;

}

其实相比于上一篇文章,本文的重点就是打开一个新的页面,然后切换到新的页面,然后获取完淘口令后再关闭这个新的页面,不断重复这个动作。关闭新打开的页面的代码如下,其实selenium就是按照句柄去找页面的,句柄就是一串字符串,我们首先切换到新打开的页面,关闭后需要切换回首页

java 复制代码
    // 关闭当前窗口
    public void closeWindow(WebDriver driver) {
        // 获取所有句柄的集合
        List<String> winHandles = new ArrayList<>(driver.getWindowHandles());
        driver.switchTo().window((String) winHandles.get(1));
        driver.close();
        driver.switchTo().window((String) winHandles.get(0));
    }

完整的爬虫代码如下

java 复制代码
@Slf4j
@Service
public class SeleniumPlusServiceImpl implements SeleniumPlusService {


    @Override
    public List<GoodItem> startSpider() {
        // 加载chrome驱动
        System.setProperty("webdriver.chrome.driver", SeleniumUtils.DRIVER_PATH);
        ChromeOptions options = new ChromeOptions();
        options.setExperimentalOption("debuggerAddress", "127.0.0.1:9222");
        // 启动浏览器
        WebDriver driver = new ChromeDriver(options);
        // 设置最长等待时间
        driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);
        // 实例化一个列表存放数据
        List<GoodItem> rstList = new ArrayList<>();
        // 开始遍历卡片数据
        // 遍历100组数据暂停
        for (int i = 0; i < 100; ) {
            WebElement element = driver.findElement(By.className("GoodsList__CardList-sc-84so0w-1"));
            List<WebElement> divList = element.findElements(By.className("union-good-card-wrap"));
            log.info("获取" + divList.size() + "个优惠券卡片");
            for (int j = 0; j < divList.size(); j++) {
                GoodItem item = new GoodItem();
                // 图片url
                item.setImgUrl(divList.get(j).findElement(By.className("union-good-card-good-img-wrap-mediumn"))
                        .findElement(By.tagName("a")).findElement(By.tagName("img")).getDomAttribute("src"));
                // 优惠券标题
                item.setTitle(divList.get(j).findElement(By.className("union-good-card-title"))
                        .findElement(By.tagName("span")).getText());
                // 券前价格
                item.setPrePrice(getPrice(divList.get(j)
                        .findElement(By.className("union-good-card-coupon-reserve-price-mediumn"))));
                // 券后价格
                item.setPostPrice(getPrice(divList.get(j)
                        .findElement(By.className("union-good-card-coupon-final-price"))));
                List<WebElement> commissionList = divList.get(j).findElements(By.className("union-good-card-commision-info-item"));
                // 佣金率
                item.setCommissionRate(getPrice(commissionList.get(0)));
                // 佣金
                item.setCommission(getPrice(commissionList.get(1)));

                // 点击图片产生新的页面
                divList.get(j).findElement(By.tagName("img")).click();

                // 切换到新的页面
                List<String> handleList = new ArrayList<>(driver.getWindowHandles());
                driver.switchTo().window(handleList.get(1));

                // 获取优惠券文字
                StringBuilder sb = new StringBuilder();
                List<WebElement> divsList = driver.findElement(By.className("ChatText__ChatTextContainer-sc-hl576v-0"))
                        .findElements(By.tagName("div"));
                for(int k=0; k<divsList.size(); k++) {
                    sb.append(divsList.get(k).getText() + "\n");
                }
                item.setRecommend(sb.toString());

                log.info(JSON.toJSONString(item));

                // 关闭页面
                closeWindow(driver);
                rstList.add(item);

                i++;
                if(i == 30) {
                    log.info("30条数据获取完毕");
                    return rstList;
                }
            }
            // 切换到下一页
            driver.findElement(By.className("GoodsList__Pagination-sc-84so0w-2"))
                    .findElement(By.className("mux-pagination-icon-next")).click();
            log.info("进入到下一页");
            try {
                Thread.sleep(5000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        return rstList;
    }

    // 获取券前券后价格
    private Double getPrice(WebElement element) {
        StringBuilder sb = new StringBuilder();
        sb.append(element.findElement(By.className("union-number-format-integer")).getText().replaceAll(",", ""));
        sb.append(element.findElement(By.className("union-number-format-pointer")).getText());
        sb.append(element.findElement(By.className("union-number-format-decimal")).getText());
        Double price = Double.parseDouble(sb.toString());
        return price;
    }

    // 关闭当前窗口
    public void closeWindow(WebDriver driver) {
        // 获取所有句柄的集合
        List<String> winHandles = new ArrayList<>(driver.getWindowHandles());
        driver.switchTo().window((String) winHandles.get(1));
        driver.close();
        driver.switchTo().window((String) winHandles.get(0));
    }


}

我们写一个接口来触发爬虫并且展示最终获取的数据

java 复制代码
@Controller
public class HelloController {

    @Autowired
    private SeleniumPlusService seleniumPlusService;


    @RequestMapping("/start")
    @ResponseBody
    public String startSpider() {
        List<GoodItem> goodItems = seleniumPlusService.startSpider();
        return JSON.toJSONString(goodItems);
    }

}

最后程序会获取30条优惠券数据,通过json格式返回

java 复制代码
[{
	"commission": 0.67,
	"commissionRate": 1.35,
	"imgUrl": "//img.alicdn.com/bao/uploaded/O1CN01oDxvso1iw3dVd7jec_!!6000000004476-0-yinhe.jpg",
	"postPrice": 49.9,
	"prePrice": 84.9,
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	"title": "蒙牛特仑苏纯牛奶250ml*16盒整箱学生早餐奶高端(新旧包装混发)"
}, {
	"commission": 1.6,
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	"imgUrl": "//img.alicdn.com/bao/uploaded/i4/2200828292428/O1CN01zcZrOk1To4VKJIagH_!!0-item_pic.jpg",
	"postPrice": 89.0,
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	"imgUrl": "//img.alicdn.com/bao/uploaded/i1/2204174570383/O1CN01ntyGTr1EhSVquROow_!!0-item_pic.jpg",
	"postPrice": 23.9,
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	"postPrice": 34.9,
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	"imgUrl": "//img.alicdn.com/bao/uploaded/O1CN013l8dxo1Ub4qSj8ie8_!!6000000002535-0-yinhe.jpg",
	"postPrice": 31.9,
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	"recommend": "【罗永浩直播专享】Veet/薇婷净纯脱毛膏温和型200ml娇嫩肌肤使用 94.90元\n近期热门\n速速抢购,手快有,手慢无!\nh:/88¥ CZ0001 JSyndGcWiWS¥\n",
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	"commission": 0.68,
	"commissionRate": 1.5,
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	"postPrice": 99.0,
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