Question

好，所以我有这个数组

import unittest
from selenium import webdriver
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.keys import Keys
import time

class GoogleEveryFirstLink(unittest.TestCase):

    def setUp(self):
        self.driver = webdriver.Chrome(executable_path=r'D:\Test automation\chromedriver.exe')
        self.driver.get("http://www.google.com")

    def test_Hover_Facebook(self):
        driver = self.driver
        self.assertIn("Google",driver.title)
        elem=driver.find_element_by_id("lst-ib")
        elem.clear()
        elem.send_keys("India")
        elem.send_keys(Keys.RETURN)
        page_counter=2
        links_counter=1
        wait = WebDriverWait(driver,20)
        wait.until(EC.element_to_be_clickable((By.XPATH,"(//h3[@class='r']/a)[" + str(links_counter) + "]")))
        pages=driver.find_elements_by_xpath("//*[@id='nav']/tbody/tr/td/a")
        elem1=driver.find_elements_by_xpath("//h3[@class='r']/a")
        print len(elem1)
        print len(pages)
        driver.maximize_window()
        for page in pages:
            for e in elem1:
                my_link = driver.find_element_by_xpath("(//h3[@class='r']/a)[" + str(links_counter) + "]")
                print my_link.text
                my_link.click()
                driver.back()
                links_counter+=1
            my_page = driver.find_element_by_xpath("//a[text() = '" + str(page_counter) + "']")
            my_page.click()
            page_counter+=1

    def tearDown(self):
        self.driver.close()

if __name__=="__main__":
    unittest.main()

到目前为止，这对我来说仍然有效，因为我不必在阵列中走低。

  "status": "ok",
  "totalResults": 20,
  "articles": [
    {
      "source": {
        "id": "techcrunch",
        "name": "TechCrunch"
      },
      "author": "Emma Lee",
      "title": "The incredible rise of Pinduoduo, China's newest force in e-commerce",
      "description": "Editor’s note: This post originally appeared on TechNode, an editorial partner of TechCrunch based in China. From Alibaba to JD, China is not short of e-commerce powerhouses. Although the country’s e-commerce market is highly consolidated, it’s not impossible…",
      "url": "https://techcrunch.com/2018/07/26/the-incredible-rise-of-pinduoduo/",
      "urlToImage": "https://techcrunch.com/wp-content/uploads/2018/07/Pinduoduo.jpeg?w=750",
      "publishedAt": "2018-07-27T03:39:00Z"
    },

但是，如果我尝试这样做

echo $queries['status'];
echo '<br />';
echo "Total Results: ". $queries['totalResults'];

它不起作用。

Answer 1

articles包含一个对象数组，并且作者在文章array of object中。如果要找作者，则应在$ queries上应用循环。

foreach ($queries as $query ) {
    echo $query['articles']->author;
}

或直接将其获取为：

$queries['articles'][0]->author

Answer 2

您的原始查询似乎只返回了一篇文章。您最初发布的代码是尝试访问数组顶部的author键，但是author键实际上嵌套在articles数组下。这是我尝试的方法，仅用于检索活动作者：

echo $queries["articles"][0]["author"];

Answer 3

您正在使用JSON对象，这首先需要转换为PHP对象。无法直接访问JSON对象，因此将您的对象转换为字符串。

$queries = '{
     "status": "ok",
       ..........
    }';

$queries = json_decode($queries);

$articles = $queries->articles;

    foreach ($articles as $articleKey => $articleVal) {
        echo articleVal->author;
    }

Answer 4

foreach ($queries['articles'] as $article) {
    echo $article->author;
}

尝试一下

如何下葬并获得特定对象

4 个答案: