html-parsing

问题 I am trying to extract the price data (high and low) from the 3rd table (corn). The code is return "None": import urllib2 from bs4 import BeautifulSoup import time import re start_urls = 4539 nb_quotes = 10 for urls in range (start_urls, start_urls - nb_quotes, -1): start_time = time.time() # construct the URLs strings url = 'http://markets.iowafarmbureau.com/markets/fixed.php?page=egrains' # Read the HTML page content page = urllib2.urlopen(url) # Create a beautifulsoup object soup =

问题 I am trying to extract the price data (high and low) from the 3rd table (corn). The code is return "None": import urllib2 from bs4 import BeautifulSoup import time import re start_urls = 4539 nb_quotes = 10 for urls in range (start_urls, start_urls - nb_quotes, -1): start_time = time.time() # construct the URLs strings url = 'http://markets.iowafarmbureau.com/markets/fixed.php?page=egrains' # Read the HTML page content page = urllib2.urlopen(url) # Create a beautifulsoup object soup =

问题 I want to remove the content between <script></script> tags. I'm manually checking for the pattern and iterating using while loop. But, I'm getting StringOutOfBoundException at this line: String script = source.substring(startIndex,endIndex-startIndex); Below is the complete method: public static String getHtmlWithoutScript(String source) { String START_PATTERN = "<script>"; String END_PATTERN = " </script>"; while (source.contains(START_PATTERN)) { int startIndex=source.lastIndexOf(START

问题 I want to remove the content between <script></script> tags. I'm manually checking for the pattern and iterating using while loop. But, I'm getting StringOutOfBoundException at this line: String script = source.substring(startIndex,endIndex-startIndex); Below is the complete method: public static String getHtmlWithoutScript(String source) { String START_PATTERN = "<script>"; String END_PATTERN = " </script>"; while (source.contains(START_PATTERN)) { int startIndex=source.lastIndexOf(START

问题 I want to remove the content between <script></script> tags. I'm manually checking for the pattern and iterating using while loop. But, I'm getting StringOutOfBoundException at this line: String script = source.substring(startIndex,endIndex-startIndex); Below is the complete method: public static String getHtmlWithoutScript(String source) { String START_PATTERN = "<script>"; String END_PATTERN = " </script>"; while (source.contains(START_PATTERN)) { int startIndex=source.lastIndexOf(START

问题 On Google Chrome (Canary), it seems no string can make the DOM parser fail. I'm trying to parse some HTML, but if the HTML isn't completely, 100%, valid, I want it to display an error. I've tried the obvious: var newElement = document.createElement('div'); newElement.innerHTML = someMarkup; // Might fail on IE, never on Chrome. I've also tried the method in this question. Doesn't fail for invalid markup, even the most invalid markup I can produce. So, is there some way to parse HTML "strictly

问题 I am currently attempting (or planning to attempt) to write a simple (as possible) program to parse an html document into a tree. After googling I have found many answers saying "don't do it it's been done" (or words to that effect); and references to examples of HTML parsers; and also a rather emphatic article on why one shouldn't use Regular expresions. However I haven't found any guides on the "right" way to write a parser. (This, by the way, is something I'm attempting more as a learning

问题 I am currently attempting (or planning to attempt) to write a simple (as possible) program to parse an html document into a tree. After googling I have found many answers saying "don't do it it's been done" (or words to that effect); and references to examples of HTML parsers; and also a rather emphatic article on why one shouldn't use Regular expresions. However I haven't found any guides on the "right" way to write a parser. (This, by the way, is something I'm attempting more as a learning

问题 I'm trying to parse some websites with Swiftsoup, let's say one of the websites is from Medium. How can I extract the body of the website and load the body to another UIViewController like what Instapaper does? Here is the code I use to extract the title: import SwiftSoup class WebViewController: UIViewController, UIWebViewDelegate { ... override func viewDidLoad() { super.viewDidLoad() let url = URL(string: "https://medium.com/@timjwise/stop-lying-to-yourself-when-you-snub-panhandlers-its

问题 I'm trying to parse some websites with Swiftsoup, let's say one of the websites is from Medium. How can I extract the body of the website and load the body to another UIViewController like what Instapaper does? Here is the code I use to extract the title: import SwiftSoup class WebViewController: UIViewController, UIWebViewDelegate { ... override func viewDidLoad() { super.viewDidLoad() let url = URL(string: "https://medium.com/@timjwise/stop-lying-to-yourself-when-you-snub-panhandlers-its