web-crawler

问题 The following code won't work: using System; using System.IO; using System.Net; using System.Web; namespace Proyecto_Prueba_04 { class Program { /// <summary> /// /// </summary> /// <param name="url"></param> /// <returns></returns> public static string GetWebText(string url) { HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url); request.UserAgent = "A .NET Web Crawler"; WebResponse response = request.GetResponse(); Stream stream = response.GetResponseStream(); StreamReader

问题 I'm trying to crawl movie list with Scrapy (I take only the Director & Movie title fields). Sometimes, there are two directors and Scrapy scape them as different. So the first director will be alon the movie title but for the second there will be no movie title. So I created a condition like this : if director2: item['director'] = map(unicode.strip,titres.xpath("tbody/tr/td/div/div[2]/div[3]/div[2]/div/h2/div/a/text()").extract()) The last div[2] exists only if there are two directors. And I

问题 As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 8 years ago . I have used the following python scripts to crawl google scholar from python: import urllib filehandle = urllib.urlopen('http://www

问题 As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 8 years ago . I have used the following python scripts to crawl google scholar from python: import urllib filehandle = urllib.urlopen('http://www

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 6 years ago . Improve this question I need to find and copy those words that appears over 5 times on a given website using Python 3 code and I'm not sure how to do it. I've looked through the archives here on stack overflow but other solutions rely on python 2 code. Here's the measly code I

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 6 years ago . Improve this question I need to find and copy those words that appears over 5 times on a given website using Python 3 code and I'm not sure how to do it. I've looked through the archives here on stack overflow but other solutions rely on python 2 code. Here's the measly code I

问题 This is the html code from which i want to extract data. But whenever i run i am getting some random values. Please can anyone help me out with this. I want to extract the following: Mumbai, Maharastra, 1958, government, UGC and Indian Institute of Technology, Bombay . HTML: <div class="instituteInfo"> <ul class="clg-info"> <li> <a href="link here" target="_blank">Mumbai</a>, <a href="link here" target="_blank">Maharashtra</a> </li> <li>Estd : <span>1958</span></li> <li>Ownership : <span

问题 I want to iterate and extract table from the link here, then save as excel file. How can I do that? Thank you. My code so far: import pandas as pd import requests from bs4 import BeautifulSoup from tabulate import tabulate url = 'http://zjj.sz.gov.cn/ztfw/gcjs/xmxx/jgysba/' res = requests.get(url) soup = BeautifulSoup(res.content,'lxml') print(soup) New update: from requests import post import json import pandas as pd import numpy as np headers = { "User-Agent": "Mozilla/5.0 (Windows NT 10.0;

问题 I have a Nutch crawl with 4 segments which are fully indexed using the bin/nutch solrindex command. Now I'm all out of storage on the box, so can I delete the 4 segments and retain only the crawldb and continue crawling from where I left it? Since all the segments are merged and indexed to Solr I don't see a problem in deleting the segments, or am I wrong there? 回答1: Thanks to the help on the Nutch mailing list, I found out that I can delete those segments. 来源： https://stackoverflow.com

问题 I am trying to run nutch as a crawler over some local directories using examples taken from both the main tutorial (https://cwiki.apache.org/confluence/display/nutch/FAQ#FAQ-HowdoIindexmylocalfilesystem?) as well as from other sources. Nutch is perfectly able to crawl the web no problem, but for some reason it refuses to scan local directories. My configuration files are as follows: regex-urlfilter: # Each non-comment, non-blank line contains a regular expression # prefixed by '+' or '-'. The