Question

晚上好，在一个带有巨大脑屁的泡菜中，可以使用一点点帮助。所以我写了这个C＃控制台应用程序，它使用Selenium打开网页，登录，做一些事情，然后提交表单并注销网站。现在我有一个for循环来做100次。现在很少它可能会打嗝并引发异常，因为页面加载速度不够快或其他什么。我认为使用try / catch可能会很好，但是一旦catch捕获异常，我希望它重做它所在的循环数并继续。例如，假如我在迭代66中的100并且它抛出异常导致页面加载不够快或者页面上没有该链接的错误，我需要它来捕获它，记录它，然后重新启动66号再次。下面是我的一些原始代码和我得到的另一部分。

using System;
using System.Collections.Generic;
using System.Text;
using OpenQA.Selenium;
using OpenQA.Selenium.Firefox;
using OpenQA.Selenium.Support.UI;
using System.Threading;
using System.IO;

namespace SeleniumTest
{
class Program
{
    static void Main(string[] args)
    {
            for (Int64 i = 1; i < 100; i++)
            {
                DateTime time;
                time = DateTime.Now;
                StreamWriter tw = new StreamWriter(@"C:\folder\file.txt", true);
                IWebDriver driver = new FirefoxDriver();
                tw.WriteLine("Staring test," + time);
                driver.Navigate().GoToUrl("http://site.com");
                driver.FindElement(By.Name("username")).Clear();
                driver.FindElement(By.Name("username")).SendKeys("username");
                driver.FindElement(By.Name("password")).Clear();
                driver.FindElement(By.Name("password")).SendKeys("password");
                driver.FindElement(By.CssSelector("input.ui-standard-button")).Click();
                driver.FindElement(By.LinkText("page")).Click();
                driver.FindElement(By.LinkText("page")).Click();
                Thread.Sleep(5000);
                //Do awesome stuff
                DateTime time1;
                time1 = DateTime.Now;
                driver.FindElement(By.CssSelector("div.Parameters")).Click();
                driver.FindElement(By.Name("submit")).Click();
                driver.FindElement(By.LinkText("Logoff")).Click();
                driver.Quit();
                tw.WriteLine("Stopping Test Successfully," + time1);
                tw.Flush();
                tw.Close();
                Thread.Sleep(10000);
            }
        }
    }
}


using System;
using System.Collections.Generic;
using System.Text;
using OpenQA.Selenium;
using OpenQA.Selenium.Firefox;
using OpenQA.Selenium.Support.UI;
using System.Threading;
using System.IO;

namespace SeleniumTest
{
class Program
{
    static void Main(string[] args)
    {
         try
           {
            for (Int64 i = 1; i < 100; i++)
            {
                DateTime time;
                time = DateTime.Now;
                StreamWriter tw = new StreamWriter(@"C:\folder\file.txt", true);
                IWebDriver driver = new FirefoxDriver();
                tw.WriteLine("Staring test," + time);
                driver.Navigate().GoToUrl("http://site.com");
                driver.FindElement(By.Name("username")).Clear();
                driver.FindElement(By.Name("username")).SendKeys("username");
                driver.FindElement(By.Name("password")).Clear();
                driver.FindElement(By.Name("password")).SendKeys("password");
                driver.FindElement(By.CssSelector("input.ui-standard-button")).Click();
                driver.FindElement(By.LinkText("page")).Click();
                driver.FindElement(By.LinkText("page")).Click();
                Thread.Sleep(5000);
                //Do awesome stuff
                DateTime time1;
                time1 = DateTime.Now;
                driver.FindElement(By.CssSelector("div.Parameters")).Click();
                driver.FindElement(By.Name("submit")).Click();
                driver.FindElement(By.LinkText("Logoff")).Click();
                driver.Quit();
                tw.WriteLine("Stopping Test Successfully," + time1);
                tw.Flush();
                tw.Close();
                Thread.Sleep(10000);
            }
        }
         catch(Exception e)
        {
            StreamWriter tw = new StreamWriter(@"C:\folder\file.txt", true);
            tw.WriteLine("Problem happened.  Restarting test.  Exception is :" + e);
            //Line of code to restart test at number 66 which I don't know
        }
    }
  }
}

其中//在66号重新开始测试的代码行，我不知道是我知识何时结束，希望是其他人在哪里。您可以提供的任何指导都会很棒并且值得赞赏。

Answer 1

遇到异常时减少计数器应该这样做。

for (Int64 i = 1; i < 100; i++) {
    try {
        //main code here
    } catch (Exception ex) {
        //logging here
        i--;
    }
}

Answer 2

我会试着找出它失败的原因，但是如果那不是一个选项我会把它转换为带有try catch的while循环

    int i = 100;
    while(i > 0)
    {
      try
     {
     //Do your logic here 
       i--
     }
      catch
     {
         //Log failure
      }//Don't decrement in case of failure
    }

Answer 3

for (Int64 i = 1; i < 100; ++i)
{
  for (;;)
  {
     try
     {
       //code here
       break;
     }
     catch (Exception exc)
     {
       //log error
     }
  }
}

将Try和Catch添加到现有程序

3 个答案: