Selenium WebDriver 处理table

首先，html table是由 table 元素以及一个或多个 tr、th 或 td 元素组成。

for example:

这是一个简单的html table：

源码如下：

<html>
<head>
<meta http-equiv="Content-Language" content="zh-cn">
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">

<title>for selenium test </title>

</script>
</head>
<body>
<div align="center">
    
    <h4 align="left">               table head:</h4>
    <table border="2" width="90%" id="table138" bordercolorlight="#CCCCCC" cellspacing="0" cellpadding="0" bordercolordark="#CCCCCC" style="border-collapse: collapse">
    <tr align="center">
        <td height="26" width="10%" align="center" bgcolor="#CCEEAA" ><Strong>Test Case ID</Strong></td>
        <td  height="26" width="35%" align="center" bgcolor="#EEEEAA" ><Strong>Steps</Strong></td>
        <td  height="26" width="30%" align="center" bgcolor="#00EEEE" ><Strong>Expect</Strong></td>
        <td  height="26" align="center" bgcolor="#EE00EE" ><Strong>Actual</Strong></td>
        <td  height="26" align="center" bgcolor="#00EE00" ><Strong>PASS/FAIL</Strong></td>
    </tr>    
    <tr align="center">
        <td height="26" align="center" bgcolor="#CCEEAA">ENT#-12345</td>
        <td  height="26" align="left" bgcolor="#EEEEAA" >1.open baidu.com ,wait for the page load</br>2.enter "selenium" in the input box" </br>3.click search button  </td>
        <td  height="26" align="left" bgcolor="#00EEEE" >"Selenium - Web Browser Automation" link be the first of the search result</td>
        <td  height="26" align="left" bgcolor="#EE00EE" >Selenium - Web Browser Automation is appear the page,but is not the first link</td>
        <td  height="26" align="center" bgcolor="#00EE00" >FAIL</td>
    </tr>    
    </tr>    
    <tr align="center">
        <td height="26" align="center" bgcolor="#CCEEAA">ENT#-12346</td>
        <td  height="26" align="left" bgcolor="#EEEEAA" >1.click the "Selenium - Web Browser Automation" link</br>2.wait for page load</td>
        <td  height="26" align="left" bgcolor="#00EEEE" >open the official home page of selenium</td>
        <td  height="26" align="left" bgcolor="#EE00EE" >selenium home page is load </td>
        <td  height="26" align="center" bgcolor="#00EE00" >FAIl</td>
    </tr>
    </tr>    
    <tr align="center">
        <td height="26" align="center" bgcolor="#CCEEAA">ENT#-12347</td>
        <td  height="26" align="left" bgcolor="#EEEEAA" >1.click baidu snapshot of selenium web page </br>2. wait for the page load</td>
        <td  height="26" align="left" bgcolor="#00EEEE" >the snapshot web page can be show up</td>
        <td  height="26" align="left" bgcolor="#EE00EE" >the snapshot web page is show up</td>
        <td  height="26" align="center" bgcolor="#00EE00" >PASS</td>
    </tr>
    </table>
    </div>
    
</body>
</html>

那么问题就来了，我想通过xpath获取这个table的每一个cell的值（比如获取expect的值），该怎么做。

如果这个表格被改变了，增加或删除一些行列该如何处理？

我的solution是获取table的base xpath，这个所谓的base xpath是指这个table的第n行第m列相同的部分，然后通过传入n,m获取返回值

    public static String tableCell(WebDriver driver,int row, int column)
    {
        String text = null;
        //avoid get the head line of the table
        row=row+1;
    
        String xpath="//*[@id='table138']/tbody/tr["+row+"]/td["+column+"]";
        WebElement table=driver.findElement(By.xpath(xpath)); //*[@id="table138"]/tbody/tr[1]/td[1]/strong
        text=table.getText();
        return text;
        
    }