　　有时候我们会碰到<select></select>标签的下拉框。直接点击下拉框中的选项不一定可行。Selenium专门提供了Select类来处理下拉框。

<select id="status" class="form-control valid" onchange="" name="status">

    <option value=""></option>

    <option value="0">未审核</option>

    <option value="1">初审通过</option>

    <option value="2">复审通过</option>

    <option value="3">审核不通过</option>

</select>

Python

　　先以python为例，查看Selenium代码select.py文件的实现：

　　...\selenium\webdriver\support\select.py

class Select:

    def __init__(self, webelement):

        """

        Constructor. A check is made that the given element is, indeed, a SELECT tag. If it is not,

        then an UnexpectedTagNameException is thrown.

        :Args:

         - webelement - element SELECT element to wrap

        Example:

            from selenium.webdriver.support.ui import Select \n

            Select(driver.find_element_by_tag_name("select")).select_by_index(2)

        """

        if webelement.tag_name.lower() != "select":

            raise UnexpectedTagNameException(

                "Select only works on <select> elements, not on <%s>" %

                webelement.tag_name)

        self._el = webelement

        multi = self._el.get_attribute("multiple")

        self.is_multiple = multi and multi != "false"

　　查看Select类的实现需要一个元素的定位。并且Example中给了例句。

　　Select(driver.find_element_by_tag_name("select")).select_by_index(2)

def select_by_index(self, index):

        """Select the option at the given index. This is done by examing the "index" attribute of an

           element, and not merely by counting.

           :Args:

            - index - The option at this index will be selected

           """

        match = str(index)

        matched = False

        for opt in self.options:

            if opt.get_attribute("index") == match:

                self._setSelected(opt)

                if not self.is_multiple:

                    return

                matched = True

        if not matched:

            raise NoSuchElementException("Could not locate element with index %d" % index)

　　继续查看select_by_index() 方法的使用并符合上面的给出的下拉框的要求，因为它要求下拉框的选项必须要有index属性，例如index=”1”。

def select_by_value(self, value):

        """Select all options that have a value matching the argument. That is, when given "foo" this

           would select an option like:

           <option value="foo">Bar</option>

           :Args:

            - value - The value to match against

           """

        css = "option[value =%s]" % self._escapeString(value)

        opts = self._el.find_elements(By.CSS_SELECTOR, css)

        matched = False

        for opt in opts:

            self._setSelected(opt)

            if not self.is_multiple:

                return

            matched = True

        if not matched:

            raise NoSuchElementException("Cannot locate option with value: %s" % value)

　　继续查看select_by_value() 方法符合我们的需求，它用于选取<option>标签的value值。最终，可以通过下面有实现选择下拉框的选项。

from selenium.webdriver.support.select import Select

……

sel = driver.find_element_by_xpath("//select[@id='status']")

Select(sel).select_by_value('')  #未审核

Select(sel).select_by_value('')  #初审通过

Select(sel).select_by_value('')  #复审通过

Select(sel).select_by_value('')  #审核不通过

Java

　　当然，在java中的用法也类似，唯一不区别在语法层面有。

package com.jase.base;

import org.openqa.selenium.WebDriver;

import org.openqa.selenium.By.ById;

import org.openqa.selenium.chrome.ChromeDriver;

import org.openqa.selenium.support.ui.Select;

public class SelectTest {

    public static void main(String[] args){

        WebDriver driver = new  ChromeDriver();

        driver.get("http://www.you_url.com");

        // ……

        Select sel = new Select(driver.findElement(ById.xpath("//select[@id='status']")));

        sel.selectByValue("0"); //未审核

        sel.selectByValue("1"); //初审通过

        sel.selectByValue("2"); //复审通过

        sel.selectByValue("3"); //审核不通过

    }

}

巴特西

selenium处理select标签的下拉框

Python

Java

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