可以使用剧作铬或webkit下载文件

Question

我想下载一些文件，例如 sitemap.xml.gz 。
我只想只用 playwright 1.22 。 我试图用铬浏览器进行此操作，但失败。
另外，它不适用于 webkit 。使用webkit，它将打开页面上的所有文件内容，并给我 timeout 。
它仅适用于 firefox 。
但是我想知道其他浏览器是错误的吗？也许是剧作家中的一些错误。
有人能够直接下载与剧作家的文件吗？

public class PwDownload {
    public static void main(String[] args) {
        try (Playwright playwright = Playwright.create()) {
            final BrowserType chromium = playwright.chromium();
            final Browser browser = chromium.launch(new BrowserType.LaunchOptions().setHeadless(false));
            Page page = browser.newPage();
            Download download = page.waitForDownload(() -> {
                page.navigate("https://www.fnac.es/sitemap-top-post.xml.gz");
            });
            System.out.println(download.path());
            browser.close();
        }
    }
}

铬的错误跟踪：

navigating to "https://www.fnac.es/sitemap-top-post.xml.gz", waiting until "load"
============================================================
    at FrameSession._navigate (/private/var/folders/1n/tnrrsqrs1_7f_k2x84xql3pr0000gn/T/playwright-java-12123589937209992525/package/lib/server/chromium/crPage.js:636:35)
    at runNextTicks (node:internal/process/task_queues:61:5)
    at processImmediate (node:internal/timers:437:9)
    at async /private/var/folders/1n/tnrrsqrs1_7f_k2x84xql3pr0000gn/T/playwright-java-12123589937209992525/package/lib/server/frames.js:648:30
    at async ProgressController.run (/private/var/folders/1n/tnrrsqrs1_7f_k2x84xql3pr0000gn/T/playwright-java-12123589937209992525/package/lib/server/progress.js:101:22)
    at async FrameDispatcher.goto (/private/var/folders/1n/tnrrsqrs1_7f_k2x84xql3pr0000gn/T/playwright-java-12123589937209992525/package/lib/server/dispatchers/frameDispatcher.js:86:59)
    at async DispatcherConnection.dispatch (/private/var/folders/1n/tnrrsqrs1_7f_k2x84xql3pr0000gn/T/playwright-java-12123589937209992525/package/lib/server/dispatchers/dispatcher.js:352:22)
}
    at com.microsoft.playwright.impl.Connection.dispatch(Connection.java:183)
    at com.microsoft.playwright.impl.Connection.processOneMessage(Connection.java:163)
    at com.microsoft.playwright.impl.ChannelOwner.runUntil(ChannelOwner.java:101)
    ... 19 more

Answer 1

为铬和Firefox工作。更改outputDirectory在运行前变量。

import com.microsoft.playwright.*;
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.FilenameUtils;

import java.io.File;
import java.nio.file.Path;
import java.nio.file.Paths;

public class Main {
    public static void main(String[] args) throws Exception {

        try (Playwright playwright = Playwright.create()) {
            String outputDirectory = "d:\\";

            String url = "https://www.johnlewis.com/sitemap/products/products-00.xml.gz";
            String filename = FilenameUtils.getName(url);

            BrowserType browserType = playwright.firefox();
            Browser browser = browserType.launch(new BrowserType.LaunchOptions().setHeadless(false));
            BrowserContext newContext = browser.newContext(new Browser.NewContextOptions().setAcceptDownloads(true));
            Page page = newContext.newPage();

            Download download = page.waitForDownload(() -> {
                page.evaluate("(y) => {location.href = y;}", url);
            });

            Path downloadedFilePath = download.path();
            System.out.println("Downloaded to " + downloadedFilePath);

            Path destinationFilePath = Paths.get(outputDirectory, filename);
            FileUtils.copyFile(new File(downloadedFilePath.toString()), new File(destinationFilePath.toString()));
            System.out.println("Saved to " + destinationFilePath);
        }
    }
}

至于WebKit，我想您不能覆盖某种内置的浏览器功能。您甚至可以尝试使用playwright的Java代码打开webkit，然后手动插入链接并尝试下载 - 它不允许您执行此操作（即使在单独的窗口中，甚至使用JavaScript + <<代码>下载 html属性）

Answer 2

如果您已经有了指向文件的链接，那么为什么不只是通过普通连接下载它？ 使用Java 从https服务器下载文件

playwright下载就像从下载触发的下载一样，页面或用户。仅访问链接不会触发下载事件。