无法将对象转换为硒中的字符串

Question

在文档中这很简单，但是使用 selenium pack 从网站获取变量是有问题的（我现在需要这样做）。问题是 console.log() returns 它作为我想要的没有参数的对象（可以看出，客户端的数量恰好为 string/int （删除 / 后）。

var webdriver = require('selenium-webdriver'),
By = webdriver.By,
until = webdriver.until;

var driver = new webdriver.Builder()
.forBrowser('firefox')
.build();

var number;

driver.get('the website');
number = driver.findElement(By.xpath('/html/body/table/tbody/tr[4]/td[2]/table/tbody/tr/td[1]/table/tbody/tr[15]/td[2]')); //.toString is not working either, valueof too
console.log(number);

HTML 我要查找的页面和字符串

以及我从 console.log

中得到的

[ thenableWebDriverProxy {
    flow_:
     ControlFlow {
       propagateUnhandledRejections_: true,
       activeQueue_: [Object],
       taskQueues_: [Object],
       shutdownTask_: null,
       hold_: [Object] },
    session_:
     ManagedPromise {
       flow_: [Object],
       stack_: null,
       parent_: [Object],
       callbacks_: [Object],
       state_: 'blocked',
       handled_: true,
       value_: undefined,
       queue_: null },
    executor_: Executor { w3c: false, customCommands_: [Object], log_: [Object] },
    fileDetector_: null,
    onQuit_: [Function: onQuit],
    cancel: [Function],
    then: [Function: bound then],
    catch: [Function: bound then] },
  ManagedPromise {
    flow_:
     ControlFlow {
       propagateUnhandledRejections_: true,
       activeQueue_: [Object],
       taskQueues_: [Object],
       shutdownTask_: null,
       hold_: [Object] },
    stack_: null,
    parent_: null,
    callbacks_: null,
    state_: 'fulfilled',
    handled_: false,
    value_: 'unused',
    queue_:
     TaskQueue {
       name_: 'TaskQueue::3',
       flow_: [Object],
       tasks_: [Object],
       interrupts_: null,
       pending_: null,
       subQ_: null,
       state_: 'new',
       unhandledRejections_: Set {} } },
  [Function],
  [Function: bound then],
  [Function: bound catch],
  [Function] ]

使用console.log(number.getText());

后的输出

ManagedPromise {
  flow_:
   ControlFlow {
     propagateUnhandledRejections_: true,
     activeQueue_:
      TaskQueue {
        name_: 'TaskQueue::3',
        flow_: [Circular],
        tasks_: [Object],
        interrupts_: null,
        pending_: null,
        subQ_: null,
        state_: 'new',
        unhandledRejections_: Set {} },
     taskQueues_: Set { [Object] },
     shutdownTask_: null,
     hold_:
      Timeout {
        _called: false,
        _idleTimeout: 2147483647,
        _idlePrev: [Object],
        _idleNext: [Object],
        _idleStart: 431,
        _onTimeout: [Function],
        _timerArgs: undefined,
        _repeat: 2147483647 } },
  stack_:
   { Task: WebElement.getText()
       at thenableWebDriverProxy.schedule (/home/soda/node_modules/selenium-webdriver/lib/webdriver.js:816:17)
       at WebElementPromise.schedule_ (/home/soda/node_modules/selenium-webdriver/lib/webdriver.js:1921:25)
       at WebElementPromise.getText (/home/soda/node_modules/selenium-webdriver/lib/webdriver.js:2185:17)
       at getNumber (/home/soda/main.js:15:24)
       at Object.<anonymous> (/home/soda/main.js:19:1)
       at Module._compile (module.js:573:32)
       at Object.Module._extensions..js (module.js:582:10)
       at Module.load (module.js:490:32)
       at tryModuleLoad (module.js:449:12)
       at Function.Module._load (module.js:441:3) name: 'Task' },
  parent_: null,
  callbacks_: null,
  state_: 'pending',
  handled_: false,
  value_: undefined,
  queue_: null }

Answer 1

number 是 WebElement，当您使用 toString() 时，您得到的是对象字符串，而不是文本。对于文本使用 getText()

number = driver.findElement(By.xpath('/html/body/table/tbody/tr[4]/td[2]/table/tbody/tr/td[1]/table/tbody/tr[15]/td[2]')).getText();
console.log(number);

Answer 2

.getText() returns 一个承诺，因此为了获得文本，您需要使用 .then();

从承诺中提取值

number = driver.findElement(By.xpath('/html/body/table/tbody/tr[4]/td[2]/table/tbody/tr/td[1]/table/tbody/tr[15]/td[2]')); //.toString is not working either, valueof too

number.then(function(text){
 console.log(text); //this will log the actual text.
});

无法将对象转换为硒中的字符串

Can't convert object to string in selenium

javascript

selenium

tostring

node.js

selenium-webdriver