描述

需要实现的内容如下：

1. 使用playwright加载某宝登录页面
2. 切换到二维码登录模式
3. 将二维码保存为本地图片

实现

import com.microsoft.playwright.*;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.io.FileUtils;
import java.io.File;
import java.nio.file.Path;
import java.nio.file.Paths;
@Slf4j
public class QrcodeDemo {
    public void capture() {
        log.debug("start to test playwright demo");
        try (Playwright playwright = Playwright.create()) {
            BrowserType chromium = playwright.chromium();
            Path userDataDir = Paths.get("d:/my/");
            BrowserContext context = chromium.launchPersistentContext(userDataDir,
                    new BrowserType.LaunchPersistentContextOptions().setHeadless(false).setDevtools(false).setSlowMo(50));
            //正式调用登录页面，进行登录，然后将登录信息保存到browserContext中
            String loginUrl = "https://login.taobao.com";
            log.debug("准备登录，地址为[{}]", loginUrl);
            try(Page page = context.newPage()){
                page.navigate(loginUrl);
                page.waitForLoadState();
                //点击显示二维码
                page.locator("//i[@class='iconfont icon-qrcode']").click();
                //获取二维码, 并写入图片
                byte[] screenshot = page.locator("//div[@class='qrcode-img']//canvas").screenshot();
                FileUtils.writeByteArrayToFile(new File("d://data/qrcode.png"), screenshot);
                log.debug("二维码写入成功");
            }catch (Exception e){
                log.debug("登录失败，url:" + loginUrl);
                return;
            }
            log.debug("over");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    public static void main(String[] args) {
        QrcodeDemo demo = new QrcodeDemo();
        demo.capture();
    }
}