元素不再附加到DOM命令duration或timeout:21毫秒，当它退出循环时

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下载new month Oct month data以csv格式下载的Exception线程“main”org.openqa.selenium.staleElementReferenceException：Element不再附加到DOM命令持续时间或超时时间：21毫秒有关此错误的文档，请访问：http://seleniumhq.org/exceptions/stale_element_reference.html构建信息：版本:'2.48.2'，修订:'41BCCDD'，时间:'2015-10-09 19:59:12'系统信息：主机:'treselle'，IP:'192.168.0.123'，OS.name:'Windows 0_60'会话ID:ecbdefce-d119-43cc-b239-124d9961bf7e驱动程序信息:org.openqa.selenium.firefox.FirefoxDriver功能[{platform=windows,acceptslcerts=true,javascriptenabled=true,csssselectorsenabled=true,databaseenabled=true,databaseenabled=true,browsername=firefox,handlesalerts=true,nativeevents=false,在sun.reflect.nativeconstructoraccessorimpl.newinstance（nativeconstructoraccessorimpl.java:57)在sun.reflect.delegingconstructoraccessorimpl.newinstance（delegatingconstructoraccessorimpl.java:45)在java.lang.reflect.constructor.newinstance（structor.java:526)在org.openqa.selenium.remote.errorhandler.createthrowable（remoteWebDriver.execute(remoteWebDriver.java:647)在org.openqa.selenium.remote.remoteWebelement.execute(remoteWebelement.java:326)在org.openqa.selenium.remote.remoteWebelement.gettext(remoteWebelement.java:178)在stack3.main(stack3.java:43)在:org.openqa.selenium.staleElementReferenceException:Element不再附加到DOM。有关此错误的文档.48.2',修订:'41BCCDD',时间:'2015-10-09 19:59:12'系统信息:host:'treselle'，IP:'192.168.0.123',os.name:'Windows 7',os.arch:'amd64',os.version:'6.1',java.version:'1.7.0_60'驱动程序信息:Driver.version:'munknown at.fxdriver.cache.getelementat（资源://fxdriver/modules/web-element-cache.js:9354)at.utils.getelementat（文件1317345WebDriver-profile/extensions/[e-mail]/components/command-processor.js:8978)at.webelement.getelementtext（文件:///c://users/ashik/appdatations/appdata/local/temp/anmonyous7980863778031317345WebDriver-profile/extendations/[e-mail]/components/components/anmonyous:11965)[e-mail]/components/command-processor.js:12534)at.delayedcommand.prototype.executeinternal_(file://c://users/ashik/appdata/local/temp/anonymous7980863778031317345WebDriver-profile/extensions/[e-mail]/components/command-processor.js:12539)at.delayedcommandd.prototype.execute/<（文件:///c://users/ashik/appdata/local/temp/anonymous7980863778031317345WebDriver-profile/extensions/[e-mail]/components/command-processor.js:12481)

driver.get("http://www.depreportingservices.state.pa.us/ReportServer/Pages/ReportViewer.aspx?%2fOil_Gas%2fOil_Gas_Well_Historical_Production_Report");
driver.manage().window().maximize();

WebElement select = driver.findElement(By.id("ReportViewerControl_ctl04_ctl03_ddValue"));
List < WebElement > options = select.findElements(By.tagName("option"));

for (WebElement option: options) {
    if (option.getText().equals("Sep 2015 (Unconventional wells)")) {
        System.out.println("old month");
        break;
    } else {
        if (option.getText().contains("Oct")) {
            System.out.println("Download new month");
            WebElement identifier = driver.findElement(By.xpath(".//*
[@id='ReportViewerControl_ctl04_ctl03_ddValue']"));

            Select select1 = new Select(identifier);
            select1.selectByVisibleText("Oct 2015 (Unconventional wells)");

            Wait(20000);
            driver.findElement(By.xpath(".//*[@id='ReportViewerControl_ctl04_ctl00']")).click();

            Wait(20000);
            driver.findElement(By.xpath(".//*[@id='ReportViewerControl_ctl05_ctl04_ctl00_Button']/tbody/tr/td/*")).click();

            Wait(20000);
            driver.findElement(By.xpath(".//*[@id='ReportViewerControl_ctl05_ctl04_ctl00_Menu']/div[2]/a")).click();

            Wait(10000);
            System.out.println("Oct month data downloaded in csv format");
        }

Answer 1

在循环中最后一次调用后再次初始化。

select = driver.findElement(By.id("ReportViewerControl_ctl04_ctl03_ddValue"));
options = select.findElements(By.tagName("option"));

或者你可以在一排里做

options = driver.findElement(By.id("ReportViewerControl_ctl04_ctl03_ddValue")).findElements(By.tagName("option"));

在您的代码中，它应该如下所示：

driver.get("http://www.depreportingservices.state.pa.us/ReportServer/Pages/ReportViewer.aspx?%2fOil_Gas%2fOil_Gas_Well_Historical_Production_Report");
driver.manage().window().maximize();

WebElement select = driver.findElement(By.id("ReportViewerControl_ctl04_ctl03_ddValue"));
List < WebElement > options = select.findElements(By.tagName("option"));

for (WebElement option: options) {
    if (option.getText().equals("Sep 2015 (Unconventional wells)")) {
        System.out.println("old month");
        break;
    } else {
        if (option.getText().contains("Oct")) {
            System.out.println("Download new month");
            WebElement identifier = driver.findElement(By.xpath(".//*
[@id='ReportViewerControl_ctl04_ctl03_ddValue']"));

            Select select1 = new Select(identifier);
            select1.selectByVisibleText("Oct 2015 (Unconventional wells)");

            Wait(20000);
            driver.findElement(By.xpath(".//*[@id='ReportViewerControl_ctl04_ctl00']")).click();

            Wait(20000);
            driver.findElement(By.xpath(".//*[@id='ReportViewerControl_ctl05_ctl04_ctl00_Button']/tbody/tr/td/*")).click();

            Wait(20000);
            driver.findElement(By.xpath(".//*[@id='ReportViewerControl_ctl05_ctl04_ctl00_Menu']/div[2]/a")).click();

            Wait(10000);
            System.out.println("Oct month data downloaded in csv format");

            options = driver.findElement(By.id("ReportViewerControl_ctl04_ctl03_ddValue")).findElements(By.tagName("option"));
        }
}