Question

我正在执行一个java selenium项目..

    firefoxProfile.setPreference("browser.download.folderList", 2);
    firefoxProfile.setPreference("browser.download.manager.showWhenStarting", false);
    firefoxProfile.setPreference("browser.download.dir", downloadLoc.getAbsolutePath());
    firefoxProfile.setPreference("browser.helperApps.neverAsk.saveToDisk", "text/csv");
    firefoxProfile.setPreference("network.http.response.timeout", timeLimit);
    // firefoxProfile.setPreference("network.http.pipelining.read-timeout", 1);
    System.out.println("Total number of threads in before driver fn" + Thread.activeCount());
    FirefoxDriver driver1 = new FirefoxDriver(firefoxProfile);
    System.out.println("Total number of threads in after driver fn" + Thread.activeCount());

执行此操作后，它会创建4个线程但我需要只使用一个线程来运行程序。因为在我的程序中我需要同步......它应该一步一步地去。由于这4个线程是不可能的。

在指定的类中，我有一个方法，前面是@Test 所以我试着让方法同步，但它没有用......因为它说移动文件时某些其他进程使用了像资源这样的东西。

所以我需要只使用一个线程来运行程序。请给我一个很好的解决方案.. 如果您需要更多说明，请告诉我

添加完整代码

     public void waitUntilDownloadCompletes(FirefoxDriver driver) {
        waitTime = 0;
        clicked = true;
        System.out.println("Parent" + parentHandle);

        while (true) {
            System.out.println("waiting-----active count:" + Thread.activeCount() + "and time=" + waitTime);;
            try {
                createRowExcel(path, reportName, "Downloading is in progress- " + (waitTime / 60000) + " minutes" + ((waitTime / 1000) % 60) + " seconds", errorMessage, false);
//          //      updateColumn(updateExcelRowNum, updateExcelColNum, (waitTime / 1000) + "s (in progress)");

            } catch (Exception e) {
            }
            System.out.println("wait time" + waitTime + "time limit" + this.timeLimit);
            if (waitTime > timeLimit) {

                try {
                    if (closeTheChildWindow(driver)) {
                        try {

                            System.out.println("HTML" + html);
                            createRowExcel(path, reportName, "Rejected Download after waiting " + (waitTime / 60000) + " minutes " + ((waitTime / 1000) % 60) + " seconds", errorMessage, true);
                            errorMessage = "";
                            //                     //   updateColumn(updateExcelRowNum, updateExcelColNum, "Rejected Downloading after waiting " + (timeLimit / 60000) + " minutes");
                            //                      //  resetCounters();

                        } catch (Exception e) {
                        }
                        break;
                    }

                } catch (Exception e) {
                    driver.switchTo().window(parentHandle);
                }

            }
            System.out.println("Total CSV " + totalNumberOfCSV + "Time in seconds" + (waitTime / 1000));
            totalNumberOfCSV = -1;
            if (totalCSV() > totalNumberOfCSV) {
                System.out.println("Csv greater than existing");
                if (!isPartialFileExist()) {
                    System.out.println("Downloaded successfully" + totalCSV());
                    totalNumberOfCSV = totalCSV();

                    driver.switchTo().window(parentHandle);

                    clicked = false;

                    timeCounter = 0;

                    break;
                }
                System.out.println("Partial file exists" + totalCSV());
            }

            try {

                Thread.sleep(1000);
            } catch (Exception e) {
                // TODO Auto-generated catch block
                // e.printStackTrace();
                driver.switchTo().window(parentHandle);
                System.out.println("Error" + e);
            }
            waitTime += 1000;
        }
        breakWhile = false;
    }

Answer 1

无论如何，浏览器都将与selenium异步。

您必须使用WebDriverWait类使selenium等待加载页面和数据可用。例如，要等到按钮加载并可见：

WebDriverWait wait = new WebDriverWait(driver, 15);
wait.until(ExpectedConditions.visibilityOfElementLocated(By.xpath("//input[@id='button1']")));

如何避免在初始化驱动程序/同步只生成一个线程时生成多个线程

1 个答案: