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escape response from Scrapy to parse json


escape response from Scrapy to parse json

By : Henrietta
Date : November 23 2020, 03:01 PM
around this issue I have a string containing json text. I converted it to raw string by , You should not enclose your string in quote, as in the line below.
code :
json_raw = "%r"%json_all


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How do I parse a response using a global variable in Scrapy?

How do I parse a response using a global variable in Scrapy?


By : Sam Alcoff
Date : March 29 2020, 07:55 AM
To fix the issue you can do One (and probably the easiest) option would be to pass it inside meta:
code :
yield scrapy.Request("http://example.org/test.php?id=" + i, 
                     meta={"index": i},
                     dont_filter=True)
def parse(self, response):
    index = response.meta["index"]
Response not defined in Scrapy parse function

Response not defined in Scrapy parse function


By : Soufian Maaté
Date : March 29 2020, 07:55 AM
hope this fix your issue Check that the line containing TextResponse is indented properly.
For instance, if I have the following code:
code :
import scrapy
from scrapy import signals
from scrapy.http import TextResponse 
from scrapy.xlib.pydispatch import dispatcher

from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC

class EexSpider(scrapy.Spider):
    name = "eex"
    allowed_domain = ["google.com"]
    start_urls = ["http://google.com"]

    def __init__(self):
        self.driver = webdriver.Chrome()
        dispatcher.connect(self.spider_closed, signals.spider_closed)

    def spider_closed(self, spider):
        self.driver.close()

    def parse(self, response):
        self.driver.get(response.url)

    text_response = TextResponse(url=response.url, body=self.driver.page_source, encoding='utf-8')
ValueError: Invalid \escape: When readin json as respons in Scrapy

ValueError: Invalid \escape: When readin json as respons in Scrapy


By : Andrew Z.
Date : March 29 2020, 07:55 AM
I wish this help you First of all, +1 for scraping the mobile API. Much more clever than scraping from HTML!
Indeed there is a issue with the encoding.There are some octal encoded characters ([...] \074br/\076\074br/\076Best Regards,\074br/\076Emily [...]) that breaks the JSON parsing. To get rid of them use:
code :
response.body.decode('unicode-escape')
from HTMLParser import HTMLParser
...
json.loads(HTMLParser().unescape(response.body.decode('unicode-escape'))
...
import html 
...
json.loads(html.unescape(response.body.decode('unicode-escape')))
import re
...
p = re.compile(r'<.*?>')
no_html = p.sub('', str_html))
Check response before parse in Scrapy spider

Check response before parse in Scrapy spider


By : Taye Adebayo
Date : March 29 2020, 07:55 AM
this will help The website I am scraping data from implemented some mechanism such that if it detects that my request is too frequent, then the account is locked and the request will be redirected to a user validation page where it requires the user to slide a bar in order to unlock.
code :
class MySpider(scrapy.Spider):
    name = 'my_spider'

    def start_request(self):
        # read urls from external file
        urls = [...] 
        for url in urls:
            yield scrapy.Request(url)  # the response could be a user validation page

    def parse(self, response):
        # check if it's the user validation page
        # here i assume you know how to judge if it's a user validation page
        if validation page:
            #Selenium goes here
            browser = webdriver.PhantomJS()
            ...
            yield scrapy.Request(browser.current_url)  # send the request again

        # not the validation page
        else:
            #parse the data
        yield item
How to parse json data if it has escape characters in response with dart or flutter?

How to parse json data if it has escape characters in response with dart or flutter?


By : user2508658
Date : March 29 2020, 07:55 AM
Hope that helps That isn't valid json. Single quotes should not be escaped. Either you should get the source to fix it, or you can try to fix the string yourself by wholesale replacing any occurrence of \' with '.
code :
String fixed = badString.replaceAll(r"\'", "'");
json.decode(fixed);
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